text: # Copyright (C) 2001-2010 Python Software Foundation
  # Contact: email-sig@python.org
  # email package unit tests
  
  import re
  import time
  import base64
  import unittest
  import textwrap
  
  from io import StringIO, BytesIO
  from itertools import chain
  
  import email
  import email.policy
  
  from email.charset import Charset
  from email.header import Header, decode_header, make_header
  from email.parser import Parser, HeaderParser
  from email.generator import Generator, DecodedGenerator, BytesGenerator
  from email.message import Message
  from email.mime.application import MIMEApplication
  from email.mime.audio import MIMEAudio
  from email.mime.text import MIMEText
  from email.mime.image import MIMEImage
  from email.mime.base import MIMEBase
  from email.mime.message import MIMEMessage
  from email.mime.multipart import MIMEMultipart
  from email import utils
  from email import errors
  from email import encoders
  from email import iterators
  from email import base64mime
  from email import quoprimime
  
  from test.support import unlink
  from test.test_email import openfile, TestEmailBase
  
  # These imports are documented to work, but we are testing them using a
  # different path, so we import them here just to make sure they are importable.
  from email.parser import FeedParser, BytesFeedParser
  
  NL = '\n'
  EMPTYSTRING = ''
  SPACE = ' '
  
  
  # Test various aspects of the Message class's API
  class TestMessageAPI(TestEmailBase):
      def test_get_all(self):
          eq = self.assertEqual
          msg = self._msgobj('msg_20.txt')
          eq(msg.get_all('cc'), ['ccc@zzz.org', 'ddd@zzz.org', 'eee@zzz.org'])
          eq(msg.get_all('xx', 'n/a'), 'n/a')
  
      def test_getset_charset(self):
          eq = self.assertEqual
          msg = Message()
          eq(msg.get_charset(), None)
          charset = Charset('iso-8859-1')
          msg.set_charset(charset)
          eq(msg['mime-version'], '1.0')
          eq(msg.get_content_type(), 'text/plain')
          eq(msg['content-type'], 'text/plain; charset="iso-8859-1"')
          eq(msg.get_param('charset'), 'iso-8859-1')
          eq(msg['content-transfer-encoding'], 'quoted-printable')
          eq(msg.get_charset().input_charset, 'iso-8859-1')
          # Remove the charset
          msg.set_charset(None)
          eq(msg.get_charset(), None)
          eq(msg['content-type'], 'text/plain')
          # Try adding a charset when there's already MIME headers present
          msg = Message()
          msg['MIME-Version'] = '2.0'
          msg['Content-Type'] = 'text/x-weird'
          msg['Content-Transfer-Encoding'] = 'quinted-puntable'
          msg.set_charset(charset)
          eq(msg['mime-version'], '2.0')
          eq(msg['content-type'], 'text/x-weird; charset="iso-8859-1"')
          eq(msg['content-transfer-encoding'], 'quinted-puntable')
  
      def test_set_charset_from_string(self):
          eq = self.assertEqual
          msg = Message()
          msg.set_charset('us-ascii')
          eq(msg.get_charset().input_charset, 'us-ascii')
          eq(msg['content-type'], 'text/plain; charset="us-ascii"')
  
      def test_set_payload_with_charset(self):
          msg = Message()
          charset = Charset('iso-8859-1')
          msg.set_payload('This is a string payload', charset)
          self.assertEqual(msg.get_charset().input_charset, 'iso-8859-1')
  
      def test_get_charsets(self):
          eq = self.assertEqual
  
          msg = self._msgobj('msg_08.txt')
          charsets = msg.get_charsets()
          eq(charsets, [None, 'us-ascii', 'iso-8859-1', 'iso-8859-2', 'koi8-r'])
  
          msg = self._msgobj('msg_09.txt')
          charsets = msg.get_charsets('dingbat')
          eq(charsets, ['dingbat', 'us-ascii', 'iso-8859-1', 'dingbat',
                        'koi8-r'])
  
          msg = self._msgobj('msg_12.txt')
          charsets = msg.get_charsets()
          eq(charsets, [None, 'us-ascii', 'iso-8859-1', None, 'iso-8859-2',
                        'iso-8859-3', 'us-ascii', 'koi8-r'])
  
      def test_get_filename(self):
          eq = self.assertEqual
  
          msg = self._msgobj('msg_04.txt')
          filenames = [p.get_filename() for p in msg.get_payload()]
          eq(filenames, ['msg.txt', 'msg.txt'])
  
          msg = self._msgobj('msg_07.txt')
          subpart = msg.get_payload(1)
          eq(subpart.get_filename(), 'dingusfish.gif')
  
      def test_get_filename_with_name_parameter(self):
          eq = self.assertEqual
  
          msg = self._msgobj('msg_44.txt')
          filenames = [p.get_filename() for p in msg.get_payload()]
          eq(filenames, ['msg.txt', 'msg.txt'])
  
      def test_get_boundary(self):
          eq = self.assertEqual
          msg = self._msgobj('msg_07.txt')
          # No quotes!
          eq(msg.get_boundary(), 'BOUNDARY')
  
      def test_set_boundary(self):
          eq = self.assertEqual
          # This one has no existing boundary parameter, but the Content-Type:
          # header appears fifth.
          msg = self._msgobj('msg_01.txt')
          msg.set_boundary('BOUNDARY')
          header, value = msg.items()[4]
          eq(header.lower(), 'content-type')
          eq(value, 'text/plain; charset="us-ascii"; boundary="BOUNDARY"')
          # This one has a Content-Type: header, with a boundary, stuck in the
          # middle of its headers.  Make sure the order is preserved; it should
          # be fifth.
          msg = self._msgobj('msg_04.txt')
          msg.set_boundary('BOUNDARY')
          header, value = msg.items()[4]
          eq(header.lower(), 'content-type')
          eq(value, 'multipart/mixed; boundary="BOUNDARY"')
          # And this one has no Content-Type: header at all.
          msg = self._msgobj('msg_03.txt')
          self.assertRaises(errors.HeaderParseError,
                            msg.set_boundary, 'BOUNDARY')
  
      def test_make_boundary(self):
          msg = MIMEMultipart('form-data')
          # Note that when the boundary gets created is an implementation
          # detail and might change.
          self.assertEqual(msg.items()[0][1], 'multipart/form-data')
          # Trigger creation of boundary
          msg.as_string()
          self.assertEqual(msg.items()[0][1][:33],
                          'multipart/form-data; boundary="==')
          # XXX: there ought to be tests of the uniqueness of the boundary, too.
  
      def test_message_rfc822_only(self):
          # Issue 7970: message/rfc822 not in multipart parsed by
          # HeaderParser caused an exception when flattened.
          with openfile('msg_46.txt') as fp:
              msgdata = fp.read()
          parser = HeaderParser()
          msg = parser.parsestr(msgdata)
          out = StringIO()
          gen = Generator(out, True, 0)
          gen.flatten(msg, False)
          self.assertEqual(out.getvalue(), msgdata)
  
      def test_byte_message_rfc822_only(self):
          # Make sure new bytes header parser also passes this.
          with openfile('msg_46.txt') as fp:
              msgdata = fp.read().encode('ascii')
          parser = email.parser.BytesHeaderParser()
          msg = parser.parsebytes(msgdata)
          out = BytesIO()
          gen = email.generator.BytesGenerator(out)
          gen.flatten(msg)
          self.assertEqual(out.getvalue(), msgdata)
  
      def test_get_decoded_payload(self):
          eq = self.assertEqual
          msg = self._msgobj('msg_10.txt')
          # The outer message is a multipart
          eq(msg.get_payload(decode=True), None)
          # Subpart 1 is 7bit encoded
          eq(msg.get_payload(0).get_payload(decode=True),
             b'This is a 7bit encoded message.\n')
          # Subpart 2 is quopri
          eq(msg.get_payload(1).get_payload(decode=True),
             b'\xa1This is a Quoted Printable encoded message!\n')
          # Subpart 3 is base64
          eq(msg.get_payload(2).get_payload(decode=True),
             b'This is a Base64 encoded message.')
          # Subpart 4 is base64 with a trailing newline, which
          # used to be stripped (issue 7143).
          eq(msg.get_payload(3).get_payload(decode=True),
             b'This is a Base64 encoded message.\n')
          # Subpart 5 has no Content-Transfer-Encoding: header.
          eq(msg.get_payload(4).get_payload(decode=True),
             b'This has no Content-Transfer-Encoding: header.\n')
  
      def test_get_decoded_uu_payload(self):
          eq = self.assertEqual
          msg = Message()
          msg.set_payload('begin 666 -\n+:&5L;&\\@=V]R;&0 \n \nend\n')
          for cte in ('x-uuencode', 'uuencode', 'uue', 'x-uue'):
              msg['content-transfer-encoding'] = cte
              eq(msg.get_payload(decode=True), b'hello world')
          # Now try some bogus data
          msg.set_payload('foo')
          eq(msg.get_payload(decode=True), b'foo')
  
      def test_get_payload_n_raises_on_non_multipart(self):
          msg = Message()
          self.assertRaises(TypeError, msg.get_payload, 1)
  
      def test_decoded_generator(self):
          eq = self.assertEqual
          msg = self._msgobj('msg_07.txt')
          with openfile('msg_17.txt') as fp:
              text = fp.read()
          s = StringIO()
          g = DecodedGenerator(s)
          g.flatten(msg)
          eq(s.getvalue(), text)
  
      def test__contains__(self):
          msg = Message()
          msg['From'] = 'Me'
          msg['to'] = 'You'
          # Check for case insensitivity
          self.assertTrue('from' in msg)
          self.assertTrue('From' in msg)
          self.assertTrue('FROM' in msg)
          self.assertTrue('to' in msg)
          self.assertTrue('To' in msg)
          self.assertTrue('TO' in msg)
  
      def test_as_string(self):
          eq = self.ndiffAssertEqual
          msg = self._msgobj('msg_01.txt')
          with openfile('msg_01.txt') as fp:
              text = fp.read()
          eq(text, str(msg))
          fullrepr = msg.as_string(unixfrom=True)
          lines = fullrepr.split('\n')
          self.assertTrue(lines[0].startswith('From '))
          eq(text, NL.join(lines[1:]))
  
      # test_headerregistry.TestContentTypeHeader.bad_params
      def test_bad_param(self):
          msg = email.message_from_string("Content-Type: blarg; baz; boo\n")
          self.assertEqual(msg.get_param('baz'), '')
  
      def test_missing_filename(self):
          msg = email.message_from_string("From: foo\n")
          self.assertEqual(msg.get_filename(), None)
  
      def test_bogus_filename(self):
          msg = email.message_from_string(
          "Content-Disposition: blarg; filename\n")
          self.assertEqual(msg.get_filename(), '')
  
      def test_missing_boundary(self):
          msg = email.message_from_string("From: foo\n")
          self.assertEqual(msg.get_boundary(), None)
  
      def test_get_params(self):
          eq = self.assertEqual
          msg = email.message_from_string(
              'X-Header: foo=one; bar=two; baz=three\n')
          eq(msg.get_params(header='x-header'),
             [('foo', 'one'), ('bar', 'two'), ('baz', 'three')])
          msg = email.message_from_string(
              'X-Header: foo; bar=one; baz=two\n')
          eq(msg.get_params(header='x-header'),
             [('foo', ''), ('bar', 'one'), ('baz', 'two')])
          eq(msg.get_params(), None)
          msg = email.message_from_string(
              'X-Header: foo; bar="one"; baz=two\n')
          eq(msg.get_params(header='x-header'),
             [('foo', ''), ('bar', 'one'), ('baz', 'two')])
  
      # test_headerregistry.TestContentTypeHeader.spaces_around_param_equals
      def test_get_param_liberal(self):
          msg = Message()
          msg['Content-Type'] = 'Content-Type: Multipart/mixed; boundary = "CPIMSSMTPC06p5f3tG"'
          self.assertEqual(msg.get_param('boundary'), 'CPIMSSMTPC06p5f3tG')
  
      def test_get_param(self):
          eq = self.assertEqual
          msg = email.message_from_string(
              "X-Header: foo=one; bar=two; baz=three\n")
          eq(msg.get_param('bar', header='x-header'), 'two')
          eq(msg.get_param('quuz', header='x-header'), None)
          eq(msg.get_param('quuz'), None)
          msg = email.message_from_string(
              'X-Header: foo; bar="one"; baz=two\n')
          eq(msg.get_param('foo', header='x-header'), '')
          eq(msg.get_param('bar', header='x-header'), 'one')
          eq(msg.get_param('baz', header='x-header'), 'two')
          # XXX: We are not RFC-2045 compliant!  We cannot parse:
          # msg["Content-Type"] = 'text/plain; weird="hey; dolly? [you] @ <\\"home\\">?"'
          # msg.get_param("weird")
          # yet.
  
      # test_headerregistry.TestContentTypeHeader.spaces_around_semis
      def test_get_param_funky_continuation_lines(self):
          msg = self._msgobj('msg_22.txt')
          self.assertEqual(msg.get_payload(1).get_param('name'), 'wibble.JPG')
  
      # test_headerregistry.TestContentTypeHeader.semis_inside_quotes
      def test_get_param_with_semis_in_quotes(self):
          msg = email.message_from_string(
              'Content-Type: image/pjpeg; name="Jim&amp;&amp;Jill"\n')
          self.assertEqual(msg.get_param('name'), 'Jim&amp;&amp;Jill')
          self.assertEqual(msg.get_param('name', unquote=False),
                           '"Jim&amp;&amp;Jill"')
  
      # test_headerregistry.TestContentTypeHeader.quotes_inside_rfc2231_value
      def test_get_param_with_quotes(self):
          msg = email.message_from_string(
              'Content-Type: foo; bar*0="baz\\"foobar"; bar*1="\\"baz"')
          self.assertEqual(msg.get_param('bar'), 'baz"foobar"baz')
          msg = email.message_from_string(
              "Content-Type: foo; bar*0=\"baz\\\"foobar\"; bar*1=\"\\\"baz\"")
          self.assertEqual(msg.get_param('bar'), 'baz"foobar"baz')
  
      def test_field_containment(self):
          unless = self.assertTrue
          msg = email.message_from_string('Header: exists')
          unless('header' in msg)
          unless('Header' in msg)
          unless('HEADER' in msg)
          self.assertFalse('headerx' in msg)
  
      def test_set_param(self):
          eq = self.assertEqual
          msg = Message()
          msg.set_param('charset', 'iso-2022-jp')
          eq(msg.get_param('charset'), 'iso-2022-jp')
          msg.set_param('importance', 'high value')
          eq(msg.get_param('importance'), 'high value')
          eq(msg.get_param('importance', unquote=False), '"high value"')
          eq(msg.get_params(), [('text/plain', ''),
                                ('charset', 'iso-2022-jp'),
                                ('importance', 'high value')])
          eq(msg.get_params(unquote=False), [('text/plain', ''),
                                         ('charset', '"iso-2022-jp"'),
                                         ('importance', '"high value"')])
          msg.set_param('charset', 'iso-9999-xx', header='X-Jimmy')
          eq(msg.get_param('charset', header='X-Jimmy'), 'iso-9999-xx')
  
      def test_del_param(self):
          eq = self.assertEqual
          msg = self._msgobj('msg_05.txt')
          eq(msg.get_params(),
             [('multipart/report', ''), ('report-type', 'delivery-status'),
              ('boundary', 'D1690A7AC1.996856090/mail.example.com')])
          old_val = msg.get_param("report-type")
          msg.del_param("report-type")
          eq(msg.get_params(),
             [('multipart/report', ''),
              ('boundary', 'D1690A7AC1.996856090/mail.example.com')])
          msg.set_param("report-type", old_val)
          eq(msg.get_params(),
             [('multipart/report', ''),
              ('boundary', 'D1690A7AC1.996856090/mail.example.com'),
              ('report-type', old_val)])
  
      def test_del_param_on_other_header(self):
          msg = Message()
          msg.add_header('Content-Disposition', 'attachment', filename='bud.gif')
          msg.del_param('filename', 'content-disposition')
          self.assertEqual(msg['content-disposition'], 'attachment')
  
      def test_del_param_on_nonexistent_header(self):
          msg = Message()
          # Deleting param on empty msg should not raise exception.
          msg.del_param('filename', 'content-disposition')
  
      def test_del_nonexistent_param(self):
          msg = Message()
          msg.add_header('Content-Type', 'text/plain', charset='utf-8')
          existing_header = msg['Content-Type']
          msg.del_param('foobar', header='Content-Type')
          self.assertEqual(msg['Content-Type'], existing_header)
  
      def test_set_type(self):
          eq = self.assertEqual
          msg = Message()
          self.assertRaises(ValueError, msg.set_type, 'text')
          msg.set_type('text/plain')
          eq(msg['content-type'], 'text/plain')
          msg.set_param('charset', 'us-ascii')
          eq(msg['content-type'], 'text/plain; charset="us-ascii"')
          msg.set_type('text/html')
          eq(msg['content-type'], 'text/html; charset="us-ascii"')
  
      def test_set_type_on_other_header(self):
          msg = Message()
          msg['X-Content-Type'] = 'text/plain'
          msg.set_type('application/octet-stream', 'X-Content-Type')
          self.assertEqual(msg['x-content-type'], 'application/octet-stream')
  
      def test_get_content_type_missing(self):
          msg = Message()
          self.assertEqual(msg.get_content_type(), 'text/plain')
  
      def test_get_content_type_missing_with_default_type(self):
          msg = Message()
          msg.set_default_type('message/rfc822')
          self.assertEqual(msg.get_content_type(), 'message/rfc822')
  
      def test_get_content_type_from_message_implicit(self):
          msg = self._msgobj('msg_30.txt')
          self.assertEqual(msg.get_payload(0).get_content_type(),
                           'message/rfc822')
  
      def test_get_content_type_from_message_explicit(self):
          msg = self._msgobj('msg_28.txt')
          self.assertEqual(msg.get_payload(0).get_content_type(),
                           'message/rfc822')
  
      def test_get_content_type_from_message_text_plain_implicit(self):
          msg = self._msgobj('msg_03.txt')
          self.assertEqual(msg.get_content_type(), 'text/plain')
  
      def test_get_content_type_from_message_text_plain_explicit(self):
          msg = self._msgobj('msg_01.txt')
          self.assertEqual(msg.get_content_type(), 'text/plain')
  
      def test_get_content_maintype_missing(self):
          msg = Message()
          self.assertEqual(msg.get_content_maintype(), 'text')
  
      def test_get_content_maintype_missing_with_default_type(self):
          msg = Message()
          msg.set_default_type('message/rfc822')
          self.assertEqual(msg.get_content_maintype(), 'message')
  
      def test_get_content_maintype_from_message_implicit(self):
          msg = self._msgobj('msg_30.txt')
          self.assertEqual(msg.get_payload(0).get_content_maintype(), 'message')
  
      def test_get_content_maintype_from_message_explicit(self):
          msg = self._msgobj('msg_28.txt')
          self.assertEqual(msg.get_payload(0).get_content_maintype(), 'message')
  
      def test_get_content_maintype_from_message_text_plain_implicit(self):
          msg = self._msgobj('msg_03.txt')
          self.assertEqual(msg.get_content_maintype(), 'text')
  
      def test_get_content_maintype_from_message_text_plain_explicit(self):
          msg = self._msgobj('msg_01.txt')
          self.assertEqual(msg.get_content_maintype(), 'text')
  
      def test_get_content_subtype_missing(self):
          msg = Message()
          self.assertEqual(msg.get_content_subtype(), 'plain')
  
      def test_get_content_subtype_missing_with_default_type(self):
          msg = Message()
          msg.set_default_type('message/rfc822')
          self.assertEqual(msg.get_content_subtype(), 'rfc822')
  
      def test_get_content_subtype_from_message_implicit(self):
          msg = self._msgobj('msg_30.txt')
          self.assertEqual(msg.get_payload(0).get_content_subtype(), 'rfc822')
  
      def test_get_content_subtype_from_message_explicit(self):
          msg = self._msgobj('msg_28.txt')
          self.assertEqual(msg.get_payload(0).get_content_subtype(), 'rfc822')
  
      def test_get_content_subtype_from_message_text_plain_implicit(self):
          msg = self._msgobj('msg_03.txt')
          self.assertEqual(msg.get_content_subtype(), 'plain')
  
      def test_get_content_subtype_from_message_text_plain_explicit(self):
          msg = self._msgobj('msg_01.txt')
          self.assertEqual(msg.get_content_subtype(), 'plain')
  
      def test_get_content_maintype_error(self):
          msg = Message()
          msg['Content-Type'] = 'no-slash-in-this-string'
          self.assertEqual(msg.get_content_maintype(), 'text')
  
      def test_get_content_subtype_error(self):
          msg = Message()
          msg['Content-Type'] = 'no-slash-in-this-string'
          self.assertEqual(msg.get_content_subtype(), 'plain')
  
      def test_replace_header(self):
          eq = self.assertEqual
          msg = Message()
          msg.add_header('First', 'One')
          msg.add_header('Second', 'Two')
          msg.add_header('Third', 'Three')
          eq(msg.keys(), ['First', 'Second', 'Third'])
          eq(msg.values(), ['One', 'Two', 'Three'])
          msg.replace_header('Second', 'Twenty')
          eq(msg.keys(), ['First', 'Second', 'Third'])
          eq(msg.values(), ['One', 'Twenty', 'Three'])
          msg.add_header('First', 'Eleven')
          msg.replace_header('First', 'One Hundred')
          eq(msg.keys(), ['First', 'Second', 'Third', 'First'])
          eq(msg.values(), ['One Hundred', 'Twenty', 'Three', 'Eleven'])
          self.assertRaises(KeyError, msg.replace_header, 'Fourth', 'Missing')
  
      # test_defect_handling:test_invalid_chars_in_base64_payload
      def test_broken_base64_payload(self):
          x = 'AwDp0P7//y6LwKEAcPa/6Q=9'
          msg = Message()
          msg['content-type'] = 'audio/x-midi'
          msg['content-transfer-encoding'] = 'base64'
          msg.set_payload(x)
          self.assertEqual(msg.get_payload(decode=True),
                           (b'\x03\x00\xe9\xd0\xfe\xff\xff.\x8b\xc0'
                            b'\xa1\x00p\xf6\xbf\xe9\x0f'))
          self.assertIsInstance(msg.defects[0],
                                errors.InvalidBase64CharactersDefect)
  
      def test_broken_unicode_payload(self):
          # This test improves coverage but is not a compliance test.
          # The behavior in this situation is currently undefined by the API.
          x = 'this is a br\xf6ken thing to do'
          msg = Message()
          msg['content-type'] = 'text/plain'
          msg['content-transfer-encoding'] = '8bit'
          msg.set_payload(x)
          self.assertEqual(msg.get_payload(decode=True),
                           bytes(x, 'raw-unicode-escape'))
  
      def test_questionable_bytes_payload(self):
          # This test improves coverage but is not a compliance test,
          # since it involves poking inside the black box.
          x = 'this is a quéstionable thing to do'.encode('utf-8')
          msg = Message()
          msg['content-type'] = 'text/plain; charset="utf-8"'
          msg['content-transfer-encoding'] = '8bit'
          msg._payload = x
          self.assertEqual(msg.get_payload(decode=True), x)
  
      # Issue 1078919
      def test_ascii_add_header(self):
          msg = Message()
          msg.add_header('Content-Disposition', 'attachment',
                         filename='bud.gif')
          self.assertEqual('attachment; filename="bud.gif"',
              msg['Content-Disposition'])
  
      def test_noascii_add_header(self):
          msg = Message()
          msg.add_header('Content-Disposition', 'attachment',
              filename="Fußballer.ppt")
          self.assertEqual(
              'attachment; filename*=utf-8\'\'Fu%C3%9Fballer.ppt',
              msg['Content-Disposition'])
  
      def test_nonascii_add_header_via_triple(self):
          msg = Message()
          msg.add_header('Content-Disposition', 'attachment',
              filename=('iso-8859-1', '', 'Fußballer.ppt'))
          self.assertEqual(
              'attachment; filename*=iso-8859-1\'\'Fu%DFballer.ppt',
              msg['Content-Disposition'])
  
      def test_ascii_add_header_with_tspecial(self):
          msg = Message()
          msg.add_header('Content-Disposition', 'attachment',
              filename="windows [filename].ppt")
          self.assertEqual(
              'attachment; filename="windows [filename].ppt"',
              msg['Content-Disposition'])
  
      def test_nonascii_add_header_with_tspecial(self):
          msg = Message()
          msg.add_header('Content-Disposition', 'attachment',
              filename="Fußballer [filename].ppt")
          self.assertEqual(
              "attachment; filename*=utf-8''Fu%C3%9Fballer%20%5Bfilename%5D.ppt",
              msg['Content-Disposition'])
  
      def test_binary_quopri_payload(self):
          for charset in ('latin-1', 'ascii'):
              msg = Message()
              msg['content-type'] = 'text/plain; charset=%s' % charset
              msg['content-transfer-encoding'] = 'quoted-printable'
              msg.set_payload(b'foo=e6=96=87bar')
              self.assertEqual(
                  msg.get_payload(decode=True),
                  b'foo\xe6\x96\x87bar',
                  'get_payload returns wrong result with charset %s.' % charset)
  
      def test_binary_base64_payload(self):
          for charset in ('latin-1', 'ascii'):
              msg = Message()
              msg['content-type'] = 'text/plain; charset=%s' % charset
              msg['content-transfer-encoding'] = 'base64'
              msg.set_payload(b'Zm9v5paHYmFy')
              self.assertEqual(
                  msg.get_payload(decode=True),
                  b'foo\xe6\x96\x87bar',
                  'get_payload returns wrong result with charset %s.' % charset)
  
      def test_binary_uuencode_payload(self):
          for charset in ('latin-1', 'ascii'):
              for encoding in ('x-uuencode', 'uuencode', 'uue', 'x-uue'):
                  msg = Message()
                  msg['content-type'] = 'text/plain; charset=%s' % charset
                  msg['content-transfer-encoding'] = encoding
                  msg.set_payload(b"begin 666 -\n)9F]OYI:'8F%R\n \nend\n")
                  self.assertEqual(
                      msg.get_payload(decode=True),
                      b'foo\xe6\x96\x87bar',
                      str(('get_payload returns wrong result ',
                           'with charset {0} and encoding {1}.')).\
                          format(charset, encoding))
  
      def test_add_header_with_name_only_param(self):
          msg = Message()
          msg.add_header('Content-Disposition', 'inline', foo_bar=None)
          self.assertEqual("inline; foo-bar", msg['Content-Disposition'])
  
      def test_add_header_with_no_value(self):
          msg = Message()
          msg.add_header('X-Status', None)
          self.assertEqual('', msg['X-Status'])
  
      # Issue 5871: reject an attempt to embed a header inside a header value
      # (header injection attack).
      def test_embeded_header_via_Header_rejected(self):
          msg = Message()
          msg['Dummy'] = Header('dummy\nX-Injected-Header: test')
          self.assertRaises(errors.HeaderParseError, msg.as_string)
  
      def test_embeded_header_via_string_rejected(self):
          msg = Message()
          msg['Dummy'] = 'dummy\nX-Injected-Header: test'
          self.assertRaises(errors.HeaderParseError, msg.as_string)
  
      def test_unicode_header_defaults_to_utf8_encoding(self):
          # Issue 14291
          m = MIMEText('abc\n')
          m['Subject'] = 'É test'
          self.assertEqual(str(m),textwrap.dedent("""\
              Content-Type: text/plain; charset="us-ascii"
              MIME-Version: 1.0
              Content-Transfer-Encoding: 7bit
              Subject: =?utf-8?q?=C3=89_test?=
  
              abc
              """))
  
      def test_unicode_body_defaults_to_utf8_encoding(self):
          # Issue 14291
          m = MIMEText('É testabc\n')
          self.assertEqual(str(m),textwrap.dedent("""\
              Content-Type: text/plain; charset="utf-8"
              MIME-Version: 1.0
              Content-Transfer-Encoding: base64
  
              w4kgdGVzdGFiYwo=
              """))
  
  
  # Test the email.encoders module
  class TestEncoders(unittest.TestCase):
  
      def test_EncodersEncode_base64(self):
          with openfile('PyBanner048.gif', 'rb') as fp:
              bindata = fp.read()
          mimed = email.mime.image.MIMEImage(bindata)
          base64ed = mimed.get_payload()
          # the transfer-encoded body lines should all be <=76 characters
          lines = base64ed.split('\n')
          self.assertLessEqual(max([ len(x) for x in lines ]), 76)
  
      def test_encode_empty_payload(self):
          eq = self.assertEqual
          msg = Message()
          msg.set_charset('us-ascii')
          eq(msg['content-transfer-encoding'], '7bit')
  
      def test_default_cte(self):
          eq = self.assertEqual
          # 7bit data and the default us-ascii _charset
          msg = MIMEText('hello world')
          eq(msg['content-transfer-encoding'], '7bit')
          # Similar, but with 8bit data
          msg = MIMEText('hello \xf8 world')
          eq(msg['content-transfer-encoding'], 'base64')
          # And now with a different charset
          msg = MIMEText('hello \xf8 world', _charset='iso-8859-1')
          eq(msg['content-transfer-encoding'], 'quoted-printable')
  
      def test_encode7or8bit(self):
          # Make sure a charset whose input character set is 8bit but
          # whose output character set is 7bit gets a transfer-encoding
          # of 7bit.
          eq = self.assertEqual
          msg = MIMEText('文', _charset='euc-jp')
          eq(msg['content-transfer-encoding'], '7bit')
  
      def test_qp_encode_latin1(self):
          msg = MIMEText('\xe1\xf6\n', 'text', 'ISO-8859-1')
          self.assertEqual(str(msg), textwrap.dedent("""\
              MIME-Version: 1.0
              Content-Type: text/text; charset="iso-8859-1"
              Content-Transfer-Encoding: quoted-printable
  
              =E1=F6
              """))
  
      def test_qp_encode_non_latin1(self):
          # Issue 16948
          msg = MIMEText('\u017c\n', 'text', 'ISO-8859-2')
          self.assertEqual(str(msg), textwrap.dedent("""\
              MIME-Version: 1.0
              Content-Type: text/text; charset="iso-8859-2"
              Content-Transfer-Encoding: quoted-printable
  
              =BF
              """))
  
  
  # Test long header wrapping
  class TestLongHeaders(TestEmailBase):
  
      maxDiff = None
  
      def test_split_long_continuation(self):
          eq = self.ndiffAssertEqual
          msg = email.message_from_string("""\
  Subject: bug demonstration
  \t12345678911234567892123456789312345678941234567895123456789612345678971234567898112345678911234567892123456789112345678911234567892123456789
  \tmore text
  
  test
  """)
          sfp = StringIO()
          g = Generator(sfp)
          g.flatten(msg)
          eq(sfp.getvalue(), """\
  Subject: bug demonstration
  \t12345678911234567892123456789312345678941234567895123456789612345678971234567898112345678911234567892123456789112345678911234567892123456789
  \tmore text
  
  test
  """)
  
      def test_another_long_almost_unsplittable_header(self):
          eq = self.ndiffAssertEqual
          hstr = """\
  bug demonstration
  \t12345678911234567892123456789312345678941234567895123456789612345678971234567898112345678911234567892123456789112345678911234567892123456789
  \tmore text"""
          h = Header(hstr, continuation_ws='\t')
          eq(h.encode(), """\
  bug demonstration
  \t12345678911234567892123456789312345678941234567895123456789612345678971234567898112345678911234567892123456789112345678911234567892123456789
  \tmore text""")
          h = Header(hstr.replace('\t', ' '))
          eq(h.encode(), """\
  bug demonstration
   12345678911234567892123456789312345678941234567895123456789612345678971234567898112345678911234567892123456789112345678911234567892123456789
   more text""")
  
      def test_long_nonstring(self):
          eq = self.ndiffAssertEqual
          g = Charset("iso-8859-1")
          cz = Charset("iso-8859-2")
          utf8 = Charset("utf-8")
          g_head = (b'Die Mieter treten hier ein werden mit einem Foerderband '
                    b'komfortabel den Korridor entlang, an s\xfcdl\xfcndischen '
                    b'Wandgem\xe4lden vorbei, gegen die rotierenden Klingen '
                    b'bef\xf6rdert. ')
          cz_head = (b'Finan\xe8ni metropole se hroutily pod tlakem jejich '
                     b'd\xf9vtipu.. ')
          utf8_head = ('\u6b63\u78ba\u306b\u8a00\u3046\u3068\u7ffb\u8a33\u306f'
                       '\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u4e00'
                       '\u90e8\u306f\u30c9\u30a4\u30c4\u8a9e\u3067\u3059\u304c'
                       '\u3001\u3042\u3068\u306f\u3067\u305f\u3089\u3081\u3067'
                       '\u3059\u3002\u5b9f\u969b\u306b\u306f\u300cWenn ist das '
                       'Nunstuck git und Slotermeyer? Ja! Beiherhund das Oder '
                       'die Flipperwaldt gersput.\u300d\u3068\u8a00\u3063\u3066'
                       '\u3044\u307e\u3059\u3002')
          h = Header(g_head, g, header_name='Subject')
          h.append(cz_head, cz)
          h.append(utf8_head, utf8)
          msg = Message()
          msg['Subject'] = h
          sfp = StringIO()
          g = Generator(sfp)
          g.flatten(msg)
          eq(sfp.getvalue(), """\
  Subject: =?iso-8859-1?q?Die_Mieter_treten_hier_ein_werden_mit_einem_Foerderb?=
   =?iso-8859-1?q?and_komfortabel_den_Korridor_entlang=2C_an_s=FCdl=FCndischen?=
   =?iso-8859-1?q?_Wandgem=E4lden_vorbei=2C_gegen_die_rotierenden_Klingen_bef?=
   =?iso-8859-1?q?=F6rdert=2E_?= =?iso-8859-2?q?Finan=E8ni_metropole_se_hrouti?=
   =?iso-8859-2?q?ly_pod_tlakem_jejich_d=F9vtipu=2E=2E_?= =?utf-8?b?5q2j56K6?=
   =?utf-8?b?44Gr6KiA44GG44Go57+76Kiz44Gv44GV44KM44Gm44GE44G+44Gb44KT44CC5LiA?=
   =?utf-8?b?6YOo44Gv44OJ44Kk44OE6Kqe44Gn44GZ44GM44CB44GC44Go44Gv44Gn44Gf44KJ?=
   =?utf-8?b?44KB44Gn44GZ44CC5a6f6Zqb44Gr44Gv44CMV2VubiBpc3QgZGFzIE51bnN0dWNr?=
   =?utf-8?b?IGdpdCB1bmQgU2xvdGVybWV5ZXI/IEphISBCZWloZXJodW5kIGRhcyBPZGVyIGRp?=
   =?utf-8?b?ZSBGbGlwcGVyd2FsZHQgZ2Vyc3B1dC7jgI3jgajoqIDjgaPjgabjgYTjgb7jgZk=?=
   =?utf-8?b?44CC?=
  
  """)
          eq(h.encode(maxlinelen=76), """\
  =?iso-8859-1?q?Die_Mieter_treten_hier_ein_werden_mit_einem_Foerde?=
   =?iso-8859-1?q?rband_komfortabel_den_Korridor_entlang=2C_an_s=FCdl=FCndis?=
   =?iso-8859-1?q?chen_Wandgem=E4lden_vorbei=2C_gegen_die_rotierenden_Klinge?=
   =?iso-8859-1?q?n_bef=F6rdert=2E_?= =?iso-8859-2?q?Finan=E8ni_metropole_se?=
   =?iso-8859-2?q?_hroutily_pod_tlakem_jejich_d=F9vtipu=2E=2E_?=
   =?utf-8?b?5q2j56K644Gr6KiA44GG44Go57+76Kiz44Gv44GV44KM44Gm44GE44G+44Gb?=
   =?utf-8?b?44KT44CC5LiA6YOo44Gv44OJ44Kk44OE6Kqe44Gn44GZ44GM44CB44GC44Go?=
   =?utf-8?b?44Gv44Gn44Gf44KJ44KB44Gn44GZ44CC5a6f6Zqb44Gr44Gv44CMV2VubiBp?=
   =?utf-8?b?c3QgZGFzIE51bnN0dWNrIGdpdCB1bmQgU2xvdGVybWV5ZXI/IEphISBCZWlo?=
   =?utf-8?b?ZXJodW5kIGRhcyBPZGVyIGRpZSBGbGlwcGVyd2FsZHQgZ2Vyc3B1dC7jgI0=?=
   =?utf-8?b?44Go6KiA44Gj44Gm44GE44G+44GZ44CC?=""")
  
      def test_long_header_encode(self):
          eq = self.ndiffAssertEqual
          h = Header('wasnipoop; giraffes="very-long-necked-animals"; '
                     'spooge="yummy"; hippos="gargantuan"; marshmallows="gooey"',
                     header_name='X-Foobar-Spoink-Defrobnit')
          eq(h.encode(), '''\
  wasnipoop; giraffes="very-long-necked-animals";
   spooge="yummy"; hippos="gargantuan"; marshmallows="gooey"''')
  
      def test_long_header_encode_with_tab_continuation_is_just_a_hint(self):
          eq = self.ndiffAssertEqual
          h = Header('wasnipoop; giraffes="very-long-necked-animals"; '
                     'spooge="yummy"; hippos="gargantuan"; marshmallows="gooey"',
                     header_name='X-Foobar-Spoink-Defrobnit',
                     continuation_ws='\t')
          eq(h.encode(), '''\
  wasnipoop; giraffes="very-long-necked-animals";
   spooge="yummy"; hippos="gargantuan"; marshmallows="gooey"''')
  
      def test_long_header_encode_with_tab_continuation(self):
          eq = self.ndiffAssertEqual
          h = Header('wasnipoop; giraffes="very-long-necked-animals";\t'
                     'spooge="yummy"; hippos="gargantuan"; marshmallows="gooey"',
                     header_name='X-Foobar-Spoink-Defrobnit',
                     continuation_ws='\t')
          eq(h.encode(), '''\
  wasnipoop; giraffes="very-long-necked-animals";
  \tspooge="yummy"; hippos="gargantuan"; marshmallows="gooey"''')
  
      def test_header_encode_with_different_output_charset(self):
          h = Header('文', 'euc-jp')
          self.assertEqual(h.encode(), "=?iso-2022-jp?b?GyRCSjgbKEI=?=")
  
      def test_long_header_encode_with_different_output_charset(self):
          h = Header(b'test-ja \xa4\xd8\xc5\xea\xb9\xc6\xa4\xb5\xa4\xec\xa4'
              b'\xbf\xa5\xe1\xa1\xbc\xa5\xeb\xa4\xcf\xbb\xca\xb2\xf1\xbc\xd4'
              b'\xa4\xce\xbe\xb5\xc7\xa7\xa4\xf2\xc2\xd4\xa4\xc3\xa4\xc6\xa4'
              b'\xa4\xa4\xde\xa4\xb9'.decode('euc-jp'), 'euc-jp')
          res = """\
  =?iso-2022-jp?b?dGVzdC1qYSAbJEIkWEVqOUYkNSRsJD8lYSE8JWskTztKMnE8VCROPjUbKEI=?=
   =?iso-2022-jp?b?GyRCRyckckJUJEMkRiQkJF4kORsoQg==?="""
          self.assertEqual(h.encode(), res)
  
      def test_header_splitter(self):
          eq = self.ndiffAssertEqual
          msg = MIMEText('')
          # It'd be great if we could use add_header() here, but that doesn't
          # guarantee an order of the parameters.
          msg['X-Foobar-Spoink-Defrobnit'] = (
              'wasnipoop; giraffes="very-long-necked-animals"; '
              'spooge="yummy"; hippos="gargantuan"; marshmallows="gooey"')
          sfp = StringIO()
          g = Generator(sfp)
          g.flatten(msg)
          eq(sfp.getvalue(), '''\
  Content-Type: text/plain; charset="us-ascii"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  X-Foobar-Spoink-Defrobnit: wasnipoop; giraffes="very-long-necked-animals";
   spooge="yummy"; hippos="gargantuan"; marshmallows="gooey"
  
  ''')
  
      def test_no_semis_header_splitter(self):
          eq = self.ndiffAssertEqual
          msg = Message()
          msg['From'] = 'test@dom.ain'
          msg['References'] = SPACE.join('<%d@dom.ain>' % i for i in range(10))
          msg.set_payload('Test')
          sfp = StringIO()
          g = Generator(sfp)
          g.flatten(msg)
          eq(sfp.getvalue(), """\
  From: test@dom.ain
  References: <0@dom.ain> <1@dom.ain> <2@dom.ain> <3@dom.ain> <4@dom.ain>
   <5@dom.ain> <6@dom.ain> <7@dom.ain> <8@dom.ain> <9@dom.ain>
  
  Test""")
  
      def test_last_split_chunk_does_not_fit(self):
          eq = self.ndiffAssertEqual
          h = Header('Subject: the first part of this is short, but_the_second'
              '_part_does_not_fit_within_maxlinelen_and_thus_should_be_on_a_line'
              '_all_by_itself')
          eq(h.encode(), """\
  Subject: the first part of this is short,
   but_the_second_part_does_not_fit_within_maxlinelen_and_thus_should_be_on_a_line_all_by_itself""")
  
      def test_splittable_leading_char_followed_by_overlong_unsplitable(self):
          eq = self.ndiffAssertEqual
          h = Header(', but_the_second'
              '_part_does_not_fit_within_maxlinelen_and_thus_should_be_on_a_line'
              '_all_by_itself')
          eq(h.encode(), """\
  ,
   but_the_second_part_does_not_fit_within_maxlinelen_and_thus_should_be_on_a_line_all_by_itself""")
  
      def test_multiple_splittable_leading_char_followed_by_overlong_unsplitable(self):
          eq = self.ndiffAssertEqual
          h = Header(', , but_the_second'
              '_part_does_not_fit_within_maxlinelen_and_thus_should_be_on_a_line'
              '_all_by_itself')
          eq(h.encode(), """\
  , ,
   but_the_second_part_does_not_fit_within_maxlinelen_and_thus_should_be_on_a_line_all_by_itself""")
  
      def test_trailing_splitable_on_overlong_unsplitable(self):
          eq = self.ndiffAssertEqual
          h = Header('this_part_does_not_fit_within_maxlinelen_and_thus_should_'
              'be_on_a_line_all_by_itself;')
          eq(h.encode(), "this_part_does_not_fit_within_maxlinelen_and_thus_should_"
              "be_on_a_line_all_by_itself;")
  
      def test_trailing_splitable_on_overlong_unsplitable_with_leading_splitable(self):
          eq = self.ndiffAssertEqual
          h = Header('; '
              'this_part_does_not_fit_within_maxlinelen_and_thus_should_'
              'be_on_a_line_all_by_itself; ')
          eq(h.encode(), """\
  ;
   this_part_does_not_fit_within_maxlinelen_and_thus_should_be_on_a_line_all_by_itself; """)
  
      def test_long_header_with_multiple_sequential_split_chars(self):
          eq = self.ndiffAssertEqual
          h = Header('This is a long line that has two whitespaces  in a row.  '
              'This used to cause truncation of the header when folded')
          eq(h.encode(), """\
  This is a long line that has two whitespaces  in a row.  This used to cause
   truncation of the header when folded""")
  
      def test_splitter_split_on_punctuation_only_if_fws_with_header(self):
          eq = self.ndiffAssertEqual
          h = Header('thisverylongheaderhas;semicolons;and,commas,but'
              'they;arenotlegal;fold,points')
          eq(h.encode(), "thisverylongheaderhas;semicolons;and,commas,butthey;"
                          "arenotlegal;fold,points")
  
      def test_leading_splittable_in_the_middle_just_before_overlong_last_part(self):
          eq = self.ndiffAssertEqual
          h = Header('this is a  test where we need to have more than one line '
              'before; our final line that is just too big to fit;; '
              'this_part_does_not_fit_within_maxlinelen_and_thus_should_'
              'be_on_a_line_all_by_itself;')
          eq(h.encode(), """\
  this is a  test where we need to have more than one line before;
   our final line that is just too big to fit;;
   this_part_does_not_fit_within_maxlinelen_and_thus_should_be_on_a_line_all_by_itself;""")
  
      def test_overlong_last_part_followed_by_split_point(self):
          eq = self.ndiffAssertEqual
          h = Header('this_part_does_not_fit_within_maxlinelen_and_thus_should_'
              'be_on_a_line_all_by_itself ')
          eq(h.encode(), "this_part_does_not_fit_within_maxlinelen_and_thus_"
                          "should_be_on_a_line_all_by_itself ")
  
      def test_multiline_with_overlong_parts_separated_by_two_split_points(self):
          eq = self.ndiffAssertEqual
          h = Header('this_is_a__test_where_we_need_to_have_more_than_one_line_'
              'before_our_final_line_; ; '
              'this_part_does_not_fit_within_maxlinelen_and_thus_should_'
              'be_on_a_line_all_by_itself; ')
          eq(h.encode(), """\
  this_is_a__test_where_we_need_to_have_more_than_one_line_before_our_final_line_;
   ;
   this_part_does_not_fit_within_maxlinelen_and_thus_should_be_on_a_line_all_by_itself; """)
  
      def test_multiline_with_overlong_last_part_followed_by_split_point(self):
          eq = self.ndiffAssertEqual
          h = Header('this is a test where we need to have more than one line '
              'before our final line; ; '
              'this_part_does_not_fit_within_maxlinelen_and_thus_should_'
              'be_on_a_line_all_by_itself; ')
          eq(h.encode(), """\
  this is a test where we need to have more than one line before our final line;
   ;
   this_part_does_not_fit_within_maxlinelen_and_thus_should_be_on_a_line_all_by_itself; """)
  
      def test_long_header_with_whitespace_runs(self):
          eq = self.ndiffAssertEqual
          msg = Message()
          msg['From'] = 'test@dom.ain'
          msg['References'] = SPACE.join(['<foo@dom.ain>  '] * 10)
          msg.set_payload('Test')
          sfp = StringIO()
          g = Generator(sfp)
          g.flatten(msg)
          eq(sfp.getvalue(), """\
  From: test@dom.ain
  References: <foo@dom.ain>   <foo@dom.ain>   <foo@dom.ain>   <foo@dom.ain>
     <foo@dom.ain>   <foo@dom.ain>   <foo@dom.ain>   <foo@dom.ain>
     <foo@dom.ain>   <foo@dom.ain>\x20\x20
  
  Test""")
  
      def test_long_run_with_semi_header_splitter(self):
          eq = self.ndiffAssertEqual
          msg = Message()
          msg['From'] = 'test@dom.ain'
          msg['References'] = SPACE.join(['<foo@dom.ain>'] * 10) + '; abc'
          msg.set_payload('Test')
          sfp = StringIO()
          g = Generator(sfp)
          g.flatten(msg)
          eq(sfp.getvalue(), """\
  From: test@dom.ain
  References: <foo@dom.ain> <foo@dom.ain> <foo@dom.ain> <foo@dom.ain>
   <foo@dom.ain> <foo@dom.ain> <foo@dom.ain> <foo@dom.ain> <foo@dom.ain>
   <foo@dom.ain>; abc
  
  Test""")
  
      def test_splitter_split_on_punctuation_only_if_fws(self):
          eq = self.ndiffAssertEqual
          msg = Message()
          msg['From'] = 'test@dom.ain'
          msg['References'] = ('thisverylongheaderhas;semicolons;and,commas,but'
              'they;arenotlegal;fold,points')
          msg.set_payload('Test')
          sfp = StringIO()
          g = Generator(sfp)
          g.flatten(msg)
          # XXX the space after the header should not be there.
          eq(sfp.getvalue(), """\
  From: test@dom.ain
  References:\x20
   thisverylongheaderhas;semicolons;and,commas,butthey;arenotlegal;fold,points
  
  Test""")
  
      def test_no_split_long_header(self):
          eq = self.ndiffAssertEqual
          hstr = 'References: ' + 'x' * 80
          h = Header(hstr)
          # These come on two lines because Headers are really field value
          # classes and don't really know about their field names.
          eq(h.encode(), """\
  References:
   xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx""")
          h = Header('x' * 80)
          eq(h.encode(), 'xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx')
  
      def test_splitting_multiple_long_lines(self):
          eq = self.ndiffAssertEqual
          hstr = """\
  from babylon.socal-raves.org (localhost [127.0.0.1]); by babylon.socal-raves.org (Postfix) with ESMTP id B570E51B81; for <mailman-admin@babylon.socal-raves.org>; Sat, 2 Feb 2002 17:00:06 -0800 (PST)
  \tfrom babylon.socal-raves.org (localhost [127.0.0.1]); by babylon.socal-raves.org (Postfix) with ESMTP id B570E51B81; for <mailman-admin@babylon.socal-raves.org>; Sat, 2 Feb 2002 17:00:06 -0800 (PST)
  \tfrom babylon.socal-raves.org (localhost [127.0.0.1]); by babylon.socal-raves.org (Postfix) with ESMTP id B570E51B81; for <mailman-admin@babylon.socal-raves.org>; Sat, 2 Feb 2002 17:00:06 -0800 (PST)
  """
          h = Header(hstr, continuation_ws='\t')
          eq(h.encode(), """\
  from babylon.socal-raves.org (localhost [127.0.0.1]);
   by babylon.socal-raves.org (Postfix) with ESMTP id B570E51B81;
   for <mailman-admin@babylon.socal-raves.org>;
   Sat, 2 Feb 2002 17:00:06 -0800 (PST)
  \tfrom babylon.socal-raves.org (localhost [127.0.0.1]);
   by babylon.socal-raves.org (Postfix) with ESMTP id B570E51B81;
   for <mailman-admin@babylon.socal-raves.org>;
   Sat, 2 Feb 2002 17:00:06 -0800 (PST)
  \tfrom babylon.socal-raves.org (localhost [127.0.0.1]);
   by babylon.socal-raves.org (Postfix) with ESMTP id B570E51B81;
   for <mailman-admin@babylon.socal-raves.org>;
   Sat, 2 Feb 2002 17:00:06 -0800 (PST)""")
  
      def test_splitting_first_line_only_is_long(self):
          eq = self.ndiffAssertEqual
          hstr = """\
  from modemcable093.139-201-24.que.mc.videotron.ca ([24.201.139.93] helo=cthulhu.gerg.ca)
  \tby kronos.mems-exchange.org with esmtp (Exim 4.05)
  \tid 17k4h5-00034i-00
  \tfor test@mems-exchange.org; Wed, 28 Aug 2002 11:25:20 -0400"""
          h = Header(hstr, maxlinelen=78, header_name='Received',
                     continuation_ws='\t')
          eq(h.encode(), """\
  from modemcable093.139-201-24.que.mc.videotron.ca ([24.201.139.93]
   helo=cthulhu.gerg.ca)
  \tby kronos.mems-exchange.org with esmtp (Exim 4.05)
  \tid 17k4h5-00034i-00
  \tfor test@mems-exchange.org; Wed, 28 Aug 2002 11:25:20 -0400""")
  
      def test_long_8bit_header(self):
          eq = self.ndiffAssertEqual
          msg = Message()
          h = Header('Britische Regierung gibt', 'iso-8859-1',
                      header_name='Subject')
          h.append('gr\xfcnes Licht f\xfcr Offshore-Windkraftprojekte')
          eq(h.encode(maxlinelen=76), """\
  =?iso-8859-1?q?Britische_Regierung_gibt_gr=FCnes_Licht_f=FCr_Offs?=
   =?iso-8859-1?q?hore-Windkraftprojekte?=""")
          msg['Subject'] = h
          eq(msg.as_string(maxheaderlen=76), """\
  Subject: =?iso-8859-1?q?Britische_Regierung_gibt_gr=FCnes_Licht_f=FCr_Offs?=
   =?iso-8859-1?q?hore-Windkraftprojekte?=
  
  """)
          eq(msg.as_string(maxheaderlen=0), """\
  Subject: =?iso-8859-1?q?Britische_Regierung_gibt_gr=FCnes_Licht_f=FCr_Offshore-Windkraftprojekte?=
  
  """)
  
      def test_long_8bit_header_no_charset(self):
          eq = self.ndiffAssertEqual
          msg = Message()
          header_string = ('Britische Regierung gibt gr\xfcnes Licht '
                           'f\xfcr Offshore-Windkraftprojekte '
                           '<a-very-long-address@example.com>')
          msg['Reply-To'] = header_string
          eq(msg.as_string(maxheaderlen=78), """\
  Reply-To: =?utf-8?q?Britische_Regierung_gibt_gr=C3=BCnes_Licht_f=C3=BCr_Offs?=
   =?utf-8?q?hore-Windkraftprojekte_=3Ca-very-long-address=40example=2Ecom=3E?=
  
  """)
          msg = Message()
          msg['Reply-To'] = Header(header_string,
                                   header_name='Reply-To')
          eq(msg.as_string(maxheaderlen=78), """\
  Reply-To: =?utf-8?q?Britische_Regierung_gibt_gr=C3=BCnes_Licht_f=C3=BCr_Offs?=
   =?utf-8?q?hore-Windkraftprojekte_=3Ca-very-long-address=40example=2Ecom=3E?=
  
  """)
  
      def test_long_to_header(self):
          eq = self.ndiffAssertEqual
          to = ('"Someone Test #A" <someone@eecs.umich.edu>,'
                '<someone@eecs.umich.edu>, '
                '"Someone Test #B" <someone@umich.edu>, '
                '"Someone Test #C" <someone@eecs.umich.edu>, '
                '"Someone Test #D" <someone@eecs.umich.edu>')
          msg = Message()
          msg['To'] = to
          eq(msg.as_string(maxheaderlen=78), '''\
  To: "Someone Test #A" <someone@eecs.umich.edu>,<someone@eecs.umich.edu>,
   "Someone Test #B" <someone@umich.edu>,
   "Someone Test #C" <someone@eecs.umich.edu>,
   "Someone Test #D" <someone@eecs.umich.edu>
  
  ''')
  
      def test_long_line_after_append(self):
          eq = self.ndiffAssertEqual
          s = 'This is an example of string which has almost the limit of header length.'
          h = Header(s)
          h.append('Add another line.')
          eq(h.encode(maxlinelen=76), """\
  This is an example of string which has almost the limit of header length.
   Add another line.""")
  
      def test_shorter_line_with_append(self):
          eq = self.ndiffAssertEqual
          s = 'This is a shorter line.'
          h = Header(s)
          h.append('Add another sentence. (Surprise?)')
          eq(h.encode(),
             'This is a shorter line. Add another sentence. (Surprise?)')
  
      def test_long_field_name(self):
          eq = self.ndiffAssertEqual
          fn = 'X-Very-Very-Very-Long-Header-Name'
          gs = ('Die Mieter treten hier ein werden mit einem Foerderband '
                'komfortabel den Korridor entlang, an s\xfcdl\xfcndischen '
                'Wandgem\xe4lden vorbei, gegen die rotierenden Klingen '
                'bef\xf6rdert. ')
          h = Header(gs, 'iso-8859-1', header_name=fn)
          # BAW: this seems broken because the first line is too long
          eq(h.encode(maxlinelen=76), """\
  =?iso-8859-1?q?Die_Mieter_treten_hier_e?=
   =?iso-8859-1?q?in_werden_mit_einem_Foerderband_komfortabel_den_Korridor_e?=
   =?iso-8859-1?q?ntlang=2C_an_s=FCdl=FCndischen_Wandgem=E4lden_vorbei=2C_ge?=
   =?iso-8859-1?q?gen_die_rotierenden_Klingen_bef=F6rdert=2E_?=""")
  
      def test_long_received_header(self):
          h = ('from FOO.TLD (vizworld.acl.foo.tld [123.452.678.9]) '
               'by hrothgar.la.mastaler.com (tmda-ofmipd) with ESMTP; '
               'Wed, 05 Mar 2003 18:10:18 -0700')
          msg = Message()
          msg['Received-1'] = Header(h, continuation_ws='\t')
          msg['Received-2'] = h
          # This should be splitting on spaces not semicolons.
          self.ndiffAssertEqual(msg.as_string(maxheaderlen=78), """\
  Received-1: from FOO.TLD (vizworld.acl.foo.tld [123.452.678.9]) by
   hrothgar.la.mastaler.com (tmda-ofmipd) with ESMTP;
   Wed, 05 Mar 2003 18:10:18 -0700
  Received-2: from FOO.TLD (vizworld.acl.foo.tld [123.452.678.9]) by
   hrothgar.la.mastaler.com (tmda-ofmipd) with ESMTP;
   Wed, 05 Mar 2003 18:10:18 -0700
  
  """)
  
      def test_string_headerinst_eq(self):
          h = ('<15975.17901.207240.414604@sgigritzmann1.mathematik.'
               'tu-muenchen.de> (David Bremner\'s message of '
               '"Thu, 6 Mar 2003 13:58:21 +0100")')
          msg = Message()
          msg['Received-1'] = Header(h, header_name='Received-1',
                                     continuation_ws='\t')
          msg['Received-2'] = h
          # XXX The space after the ':' should not be there.
          self.ndiffAssertEqual(msg.as_string(maxheaderlen=78), """\
  Received-1:\x20
   <15975.17901.207240.414604@sgigritzmann1.mathematik.tu-muenchen.de> (David
   Bremner's message of \"Thu, 6 Mar 2003 13:58:21 +0100\")
  Received-2:\x20
   <15975.17901.207240.414604@sgigritzmann1.mathematik.tu-muenchen.de> (David
   Bremner's message of \"Thu, 6 Mar 2003 13:58:21 +0100\")
  
  """)
  
      def test_long_unbreakable_lines_with_continuation(self):
          eq = self.ndiffAssertEqual
          msg = Message()
          t = """\
  iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAAGFBMVEUAAAAkHiJeRUIcGBi9
   locQDQ4zJykFBAXJfWDjAAACYUlEQVR4nF2TQY/jIAyFc6lydlG5x8Nyp1Y69wj1PN2I5gzp"""
          msg['Face-1'] = t
          msg['Face-2'] = Header(t, header_name='Face-2')
          msg['Face-3'] = ' ' + t
          # XXX This splitting is all wrong.  It the first value line should be
          # snug against the field name or the space after the header not there.
          eq(msg.as_string(maxheaderlen=78), """\
  Face-1:\x20
   iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAAGFBMVEUAAAAkHiJeRUIcGBi9
   locQDQ4zJykFBAXJfWDjAAACYUlEQVR4nF2TQY/jIAyFc6lydlG5x8Nyp1Y69wj1PN2I5gzp
  Face-2:\x20
   iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAAGFBMVEUAAAAkHiJeRUIcGBi9
   locQDQ4zJykFBAXJfWDjAAACYUlEQVR4nF2TQY/jIAyFc6lydlG5x8Nyp1Y69wj1PN2I5gzp
  Face-3:\x20
   iVBORw0KGgoAAAANSUhEUgAAADAAAAAwBAMAAAClLOS0AAAAGFBMVEUAAAAkHiJeRUIcGBi9
   locQDQ4zJykFBAXJfWDjAAACYUlEQVR4nF2TQY/jIAyFc6lydlG5x8Nyp1Y69wj1PN2I5gzp
  
  """)
  
      def test_another_long_multiline_header(self):
          eq = self.ndiffAssertEqual
          m = ('Received: from siimage.com '
               '([172.25.1.3]) by zima.siliconimage.com with '
               'Microsoft SMTPSVC(5.0.2195.4905); '
               'Wed, 16 Oct 2002 07:41:11 -0700')
          msg = email.message_from_string(m)
          eq(msg.as_string(maxheaderlen=78), '''\
  Received: from siimage.com ([172.25.1.3]) by zima.siliconimage.com with
   Microsoft SMTPSVC(5.0.2195.4905); Wed, 16 Oct 2002 07:41:11 -0700
  
  ''')
  
      def test_long_lines_with_different_header(self):
          eq = self.ndiffAssertEqual
          h = ('List-Unsubscribe: '
               '<http://lists.sourceforge.net/lists/listinfo/spamassassin-talk>,'
               '        <mailto:spamassassin-talk-request@lists.sourceforge.net'
               '?subject=unsubscribe>')
          msg = Message()
          msg['List'] = h
          msg['List'] = Header(h, header_name='List')
          eq(msg.as_string(maxheaderlen=78), """\
  List: List-Unsubscribe:
   <http://lists.sourceforge.net/lists/listinfo/spamassassin-talk>,
          <mailto:spamassassin-talk-request@lists.sourceforge.net?subject=unsubscribe>
  List: List-Unsubscribe:
   <http://lists.sourceforge.net/lists/listinfo/spamassassin-talk>,
          <mailto:spamassassin-talk-request@lists.sourceforge.net?subject=unsubscribe>
  
  """)
  
      def test_long_rfc2047_header_with_embedded_fws(self):
          h = Header(textwrap.dedent("""\
              We're going to pretend this header is in a non-ascii character set
              \tto see if line wrapping with encoded words and embedded
                 folding white space works"""),
                     charset='utf-8',
                     header_name='Test')
          self.assertEqual(h.encode()+'\n', textwrap.dedent("""\
              =?utf-8?q?We=27re_going_to_pretend_this_header_is_in_a_non-ascii_chara?=
               =?utf-8?q?cter_set?=
               =?utf-8?q?_to_see_if_line_wrapping_with_encoded_words_and_embedded?=
               =?utf-8?q?_folding_white_space_works?=""")+'\n')
  
  
  
  # Test mangling of "From " lines in the body of a message
  class TestFromMangling(unittest.TestCase):
      def setUp(self):
          self.msg = Message()
          self.msg['From'] = 'aaa@bbb.org'
          self.msg.set_payload("""\
  From the desk of A.A.A.:
  Blah blah blah
  """)
  
      def test_mangled_from(self):
          s = StringIO()
          g = Generator(s, mangle_from_=True)
          g.flatten(self.msg)
          self.assertEqual(s.getvalue(), """\
  From: aaa@bbb.org
  
  >From the desk of A.A.A.:
  Blah blah blah
  """)
  
      def test_dont_mangle_from(self):
          s = StringIO()
          g = Generator(s, mangle_from_=False)
          g.flatten(self.msg)
          self.assertEqual(s.getvalue(), """\
  From: aaa@bbb.org
  
  From the desk of A.A.A.:
  Blah blah blah
  """)
  
      def test_mangle_from_in_preamble_and_epilog(self):
          s = StringIO()
          g = Generator(s, mangle_from_=True)
          msg = email.message_from_string(textwrap.dedent("""\
              From: foo@bar.com
              Mime-Version: 1.0
              Content-Type: multipart/mixed; boundary=XXX
  
              From somewhere unknown
  
              --XXX
              Content-Type: text/plain
  
              foo
  
              --XXX--
  
              From somewhere unknowable
              """))
          g.flatten(msg)
          self.assertEqual(len([1 for x in s.getvalue().split('\n')
                                    if x.startswith('>From ')]), 2)
  
      def test_mangled_from_with_bad_bytes(self):
          source = textwrap.dedent("""\
              Content-Type: text/plain; charset="utf-8"
              MIME-Version: 1.0
              Content-Transfer-Encoding: 8bit
              From: aaa@bbb.org
  
          """).encode('utf-8')
          msg = email.message_from_bytes(source + b'From R\xc3\xb6lli\n')
          b = BytesIO()
          g = BytesGenerator(b, mangle_from_=True)
          g.flatten(msg)
          self.assertEqual(b.getvalue(), source + b'>From R\xc3\xb6lli\n')
  
  
  # Test the basic MIMEAudio class
  class TestMIMEAudio(unittest.TestCase):
      def setUp(self):
          with openfile('audiotest.au', 'rb') as fp:
              self._audiodata = fp.read()
          self._au = MIMEAudio(self._audiodata)
  
      def test_guess_minor_type(self):
          self.assertEqual(self._au.get_content_type(), 'audio/basic')
  
      def test_encoding(self):
          payload = self._au.get_payload()
          self.assertEqual(base64.decodebytes(bytes(payload, 'ascii')),
                  self._audiodata)
  
      def test_checkSetMinor(self):
          au = MIMEAudio(self._audiodata, 'fish')
          self.assertEqual(au.get_content_type(), 'audio/fish')
  
      def test_add_header(self):
          eq = self.assertEqual
          unless = self.assertTrue
          self._au.add_header('Content-Disposition', 'attachment',
                              filename='audiotest.au')
          eq(self._au['content-disposition'],
             'attachment; filename="audiotest.au"')
          eq(self._au.get_params(header='content-disposition'),
             [('attachment', ''), ('filename', 'audiotest.au')])
          eq(self._au.get_param('filename', header='content-disposition'),
             'audiotest.au')
          missing = []
          eq(self._au.get_param('attachment', header='content-disposition'), '')
          unless(self._au.get_param('foo', failobj=missing,
                                    header='content-disposition') is missing)
          # Try some missing stuff
          unless(self._au.get_param('foobar', missing) is missing)
          unless(self._au.get_param('attachment', missing,
                                    header='foobar') is missing)
  
  
  
  # Test the basic MIMEImage class
  class TestMIMEImage(unittest.TestCase):
      def setUp(self):
          with openfile('PyBanner048.gif', 'rb') as fp:
              self._imgdata = fp.read()
          self._im = MIMEImage(self._imgdata)
  
      def test_guess_minor_type(self):
          self.assertEqual(self._im.get_content_type(), 'image/gif')
  
      def test_encoding(self):
          payload = self._im.get_payload()
          self.assertEqual(base64.decodebytes(bytes(payload, 'ascii')),
                  self._imgdata)
  
      def test_checkSetMinor(self):
          im = MIMEImage(self._imgdata, 'fish')
          self.assertEqual(im.get_content_type(), 'image/fish')
  
      def test_add_header(self):
          eq = self.assertEqual
          unless = self.assertTrue
          self._im.add_header('Content-Disposition', 'attachment',
                              filename='dingusfish.gif')
          eq(self._im['content-disposition'],
             'attachment; filename="dingusfish.gif"')
          eq(self._im.get_params(header='content-disposition'),
             [('attachment', ''), ('filename', 'dingusfish.gif')])
          eq(self._im.get_param('filename', header='content-disposition'),
             'dingusfish.gif')
          missing = []
          eq(self._im.get_param('attachment', header='content-disposition'), '')
          unless(self._im.get_param('foo', failobj=missing,
                                    header='content-disposition') is missing)
          # Try some missing stuff
          unless(self._im.get_param('foobar', missing) is missing)
          unless(self._im.get_param('attachment', missing,
                                    header='foobar') is missing)
  
  
  
  # Test the basic MIMEApplication class
  class TestMIMEApplication(unittest.TestCase):
      def test_headers(self):
          eq = self.assertEqual
          msg = MIMEApplication(b'\xfa\xfb\xfc\xfd\xfe\xff')
          eq(msg.get_content_type(), 'application/octet-stream')
          eq(msg['content-transfer-encoding'], 'base64')
  
      def test_body(self):
          eq = self.assertEqual
          bytesdata = b'\xfa\xfb\xfc\xfd\xfe\xff'
          msg = MIMEApplication(bytesdata)
          # whitespace in the cte encoded block is RFC-irrelevant.
          eq(msg.get_payload().strip(), '+vv8/f7/')
          eq(msg.get_payload(decode=True), bytesdata)
  
      def test_binary_body_with_encode_7or8bit(self):
          # Issue 17171.
          bytesdata = b'\xfa\xfb\xfc\xfd\xfe\xff'
          msg = MIMEApplication(bytesdata, _encoder=encoders.encode_7or8bit)
          # Treated as a string, this will be invalid code points.
          self.assertEqual(msg.get_payload(), '\uFFFD' * len(bytesdata))
          self.assertEqual(msg.get_payload(decode=True), bytesdata)
          self.assertEqual(msg['Content-Transfer-Encoding'], '8bit')
          s = BytesIO()
          g = BytesGenerator(s)
          g.flatten(msg)
          wireform = s.getvalue()
          msg2 = email.message_from_bytes(wireform)
          self.assertEqual(msg.get_payload(), '\uFFFD' * len(bytesdata))
          self.assertEqual(msg2.get_payload(decode=True), bytesdata)
          self.assertEqual(msg2['Content-Transfer-Encoding'], '8bit')
  
      def test_binary_body_with_encode_noop(self):
          # Issue 16564: This does not produce an RFC valid message, since to be
          # valid it should have a CTE of binary.  But the below works in
          # Python2, and is documented as working this way.
          bytesdata = b'\xfa\xfb\xfc\xfd\xfe\xff'
          msg = MIMEApplication(bytesdata, _encoder=encoders.encode_noop)
          # Treated as a string, this will be invalid code points.
          self.assertEqual(msg.get_payload(), '\uFFFD' * len(bytesdata))
          self.assertEqual(msg.get_payload(decode=True), bytesdata)
          s = BytesIO()
          g = BytesGenerator(s)
          g.flatten(msg)
          wireform = s.getvalue()
          msg2 = email.message_from_bytes(wireform)
          self.assertEqual(msg.get_payload(), '\uFFFD' * len(bytesdata))
          self.assertEqual(msg2.get_payload(decode=True), bytesdata)
  
      def test_binary_body_with_encode_quopri(self):
          # Issue 14360.
          bytesdata = b'\xfa\xfb\xfc\xfd\xfe\xff '
          msg = MIMEApplication(bytesdata, _encoder=encoders.encode_quopri)
          self.assertEqual(msg.get_payload(), '=FA=FB=FC=FD=FE=FF=20')
          self.assertEqual(msg.get_payload(decode=True), bytesdata)
          self.assertEqual(msg['Content-Transfer-Encoding'], 'quoted-printable')
          s = BytesIO()
          g = BytesGenerator(s)
          g.flatten(msg)
          wireform = s.getvalue()
          msg2 = email.message_from_bytes(wireform)
          self.assertEqual(msg.get_payload(), '=FA=FB=FC=FD=FE=FF=20')
          self.assertEqual(msg2.get_payload(decode=True), bytesdata)
          self.assertEqual(msg2['Content-Transfer-Encoding'], 'quoted-printable')
  
      def test_binary_body_with_encode_base64(self):
          bytesdata = b'\xfa\xfb\xfc\xfd\xfe\xff'
          msg = MIMEApplication(bytesdata, _encoder=encoders.encode_base64)
          self.assertEqual(msg.get_payload(), '+vv8/f7/\n')
          self.assertEqual(msg.get_payload(decode=True), bytesdata)
          s = BytesIO()
          g = BytesGenerator(s)
          g.flatten(msg)
          wireform = s.getvalue()
          msg2 = email.message_from_bytes(wireform)
          self.assertEqual(msg.get_payload(), '+vv8/f7/\n')
          self.assertEqual(msg2.get_payload(decode=True), bytesdata)
  
  
  # Test the basic MIMEText class
  class TestMIMEText(unittest.TestCase):
      def setUp(self):
          self._msg = MIMEText('hello there')
  
      def test_types(self):
          eq = self.assertEqual
          unless = self.assertTrue
          eq(self._msg.get_content_type(), 'text/plain')
          eq(self._msg.get_param('charset'), 'us-ascii')
          missing = []
          unless(self._msg.get_param('foobar', missing) is missing)
          unless(self._msg.get_param('charset', missing, header='foobar')
                 is missing)
  
      def test_payload(self):
          self.assertEqual(self._msg.get_payload(), 'hello there')
          self.assertTrue(not self._msg.is_multipart())
  
      def test_charset(self):
          eq = self.assertEqual
          msg = MIMEText('hello there', _charset='us-ascii')
          eq(msg.get_charset().input_charset, 'us-ascii')
          eq(msg['content-type'], 'text/plain; charset="us-ascii"')
  
      def test_7bit_input(self):
          eq = self.assertEqual
          msg = MIMEText('hello there', _charset='us-ascii')
          eq(msg.get_charset().input_charset, 'us-ascii')
          eq(msg['content-type'], 'text/plain; charset="us-ascii"')
  
      def test_7bit_input_no_charset(self):
          eq = self.assertEqual
          msg = MIMEText('hello there')
          eq(msg.get_charset(), 'us-ascii')
          eq(msg['content-type'], 'text/plain; charset="us-ascii"')
          self.assertTrue('hello there' in msg.as_string())
  
      def test_utf8_input(self):
          teststr = '\u043a\u0438\u0440\u0438\u043b\u0438\u0446\u0430'
          eq = self.assertEqual
          msg = MIMEText(teststr, _charset='utf-8')
          eq(msg.get_charset().output_charset, 'utf-8')
          eq(msg['content-type'], 'text/plain; charset="utf-8"')
          eq(msg.get_payload(decode=True), teststr.encode('utf-8'))
  
      @unittest.skip("can't fix because of backward compat in email5, "
          "will fix in email6")
      def test_utf8_input_no_charset(self):
          teststr = '\u043a\u0438\u0440\u0438\u043b\u0438\u0446\u0430'
          self.assertRaises(UnicodeEncodeError, MIMEText, teststr)
  
  
  
  # Test complicated multipart/* messages
  class TestMultipart(TestEmailBase):
      def setUp(self):
          with openfile('PyBanner048.gif', 'rb') as fp:
              data = fp.read()
          container = MIMEBase('multipart', 'mixed', boundary='BOUNDARY')
          image = MIMEImage(data, name='dingusfish.gif')
          image.add_header('content-disposition', 'attachment',
                           filename='dingusfish.gif')
          intro = MIMEText('''\
  Hi there,
  
  This is the dingus fish.
  ''')
          container.attach(intro)
          container.attach(image)
          container['From'] = 'Barry <barry@digicool.com>'
          container['To'] = 'Dingus Lovers <cravindogs@cravindogs.com>'
          container['Subject'] = 'Here is your dingus fish'
  
          now = 987809702.54848599
          timetuple = time.localtime(now)
          if timetuple[-1] == 0:
              tzsecs = time.timezone
          else:
              tzsecs = time.altzone
          if tzsecs > 0:
              sign = '-'
          else:
              sign = '+'
          tzoffset = ' %s%04d' % (sign, tzsecs / 36)
          container['Date'] = time.strftime(
              '%a, %d %b %Y %H:%M:%S',
              time.localtime(now)) + tzoffset
          self._msg = container
          self._im = image
          self._txt = intro
  
      def test_hierarchy(self):
          # convenience
          eq = self.assertEqual
          unless = self.assertTrue
          raises = self.assertRaises
          # tests
          m = self._msg
          unless(m.is_multipart())
          eq(m.get_content_type(), 'multipart/mixed')
          eq(len(m.get_payload()), 2)
          raises(IndexError, m.get_payload, 2)
          m0 = m.get_payload(0)
          m1 = m.get_payload(1)
          unless(m0 is self._txt)
          unless(m1 is self._im)
          eq(m.get_payload(), [m0, m1])
          unless(not m0.is_multipart())
          unless(not m1.is_multipart())
  
      def test_empty_multipart_idempotent(self):
          text = """\
  Content-Type: multipart/mixed; boundary="BOUNDARY"
  MIME-Version: 1.0
  Subject: A subject
  To: aperson@dom.ain
  From: bperson@dom.ain
  
  
  --BOUNDARY
  
  
  --BOUNDARY--
  """
          msg = Parser().parsestr(text)
          self.ndiffAssertEqual(text, msg.as_string())
  
      def test_no_parts_in_a_multipart_with_none_epilogue(self):
          outer = MIMEBase('multipart', 'mixed')
          outer['Subject'] = 'A subject'
          outer['To'] = 'aperson@dom.ain'
          outer['From'] = 'bperson@dom.ain'
          outer.set_boundary('BOUNDARY')
          self.ndiffAssertEqual(outer.as_string(), '''\
  Content-Type: multipart/mixed; boundary="BOUNDARY"
  MIME-Version: 1.0
  Subject: A subject
  To: aperson@dom.ain
  From: bperson@dom.ain
  
  --BOUNDARY
  
  --BOUNDARY--''')
  
      def test_no_parts_in_a_multipart_with_empty_epilogue(self):
          outer = MIMEBase('multipart', 'mixed')
          outer['Subject'] = 'A subject'
          outer['To'] = 'aperson@dom.ain'
          outer['From'] = 'bperson@dom.ain'
          outer.preamble = ''
          outer.epilogue = ''
          outer.set_boundary('BOUNDARY')
          self.ndiffAssertEqual(outer.as_string(), '''\
  Content-Type: multipart/mixed; boundary="BOUNDARY"
  MIME-Version: 1.0
  Subject: A subject
  To: aperson@dom.ain
  From: bperson@dom.ain
  
  
  --BOUNDARY
  
  --BOUNDARY--
  ''')
  
      def test_one_part_in_a_multipart(self):
          eq = self.ndiffAssertEqual
          outer = MIMEBase('multipart', 'mixed')
          outer['Subject'] = 'A subject'
          outer['To'] = 'aperson@dom.ain'
          outer['From'] = 'bperson@dom.ain'
          outer.set_boundary('BOUNDARY')
          msg = MIMEText('hello world')
          outer.attach(msg)
          eq(outer.as_string(), '''\
  Content-Type: multipart/mixed; boundary="BOUNDARY"
  MIME-Version: 1.0
  Subject: A subject
  To: aperson@dom.ain
  From: bperson@dom.ain
  
  --BOUNDARY
  Content-Type: text/plain; charset="us-ascii"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  
  hello world
  --BOUNDARY--''')
  
      def test_seq_parts_in_a_multipart_with_empty_preamble(self):
          eq = self.ndiffAssertEqual
          outer = MIMEBase('multipart', 'mixed')
          outer['Subject'] = 'A subject'
          outer['To'] = 'aperson@dom.ain'
          outer['From'] = 'bperson@dom.ain'
          outer.preamble = ''
          msg = MIMEText('hello world')
          outer.attach(msg)
          outer.set_boundary('BOUNDARY')
          eq(outer.as_string(), '''\
  Content-Type: multipart/mixed; boundary="BOUNDARY"
  MIME-Version: 1.0
  Subject: A subject
  To: aperson@dom.ain
  From: bperson@dom.ain
  
  
  --BOUNDARY
  Content-Type: text/plain; charset="us-ascii"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  
  hello world
  --BOUNDARY--''')
  
  
      def test_seq_parts_in_a_multipart_with_none_preamble(self):
          eq = self.ndiffAssertEqual
          outer = MIMEBase('multipart', 'mixed')
          outer['Subject'] = 'A subject'
          outer['To'] = 'aperson@dom.ain'
          outer['From'] = 'bperson@dom.ain'
          outer.preamble = None
          msg = MIMEText('hello world')
          outer.attach(msg)
          outer.set_boundary('BOUNDARY')
          eq(outer.as_string(), '''\
  Content-Type: multipart/mixed; boundary="BOUNDARY"
  MIME-Version: 1.0
  Subject: A subject
  To: aperson@dom.ain
  From: bperson@dom.ain
  
  --BOUNDARY
  Content-Type: text/plain; charset="us-ascii"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  
  hello world
  --BOUNDARY--''')
  
  
      def test_seq_parts_in_a_multipart_with_none_epilogue(self):
          eq = self.ndiffAssertEqual
          outer = MIMEBase('multipart', 'mixed')
          outer['Subject'] = 'A subject'
          outer['To'] = 'aperson@dom.ain'
          outer['From'] = 'bperson@dom.ain'
          outer.epilogue = None
          msg = MIMEText('hello world')
          outer.attach(msg)
          outer.set_boundary('BOUNDARY')
          eq(outer.as_string(), '''\
  Content-Type: multipart/mixed; boundary="BOUNDARY"
  MIME-Version: 1.0
  Subject: A subject
  To: aperson@dom.ain
  From: bperson@dom.ain
  
  --BOUNDARY
  Content-Type: text/plain; charset="us-ascii"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  
  hello world
  --BOUNDARY--''')
  
  
      def test_seq_parts_in_a_multipart_with_empty_epilogue(self):
          eq = self.ndiffAssertEqual
          outer = MIMEBase('multipart', 'mixed')
          outer['Subject'] = 'A subject'
          outer['To'] = 'aperson@dom.ain'
          outer['From'] = 'bperson@dom.ain'
          outer.epilogue = ''
          msg = MIMEText('hello world')
          outer.attach(msg)
          outer.set_boundary('BOUNDARY')
          eq(outer.as_string(), '''\
  Content-Type: multipart/mixed; boundary="BOUNDARY"
  MIME-Version: 1.0
  Subject: A subject
  To: aperson@dom.ain
  From: bperson@dom.ain
  
  --BOUNDARY
  Content-Type: text/plain; charset="us-ascii"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  
  hello world
  --BOUNDARY--
  ''')
  
  
      def test_seq_parts_in_a_multipart_with_nl_epilogue(self):
          eq = self.ndiffAssertEqual
          outer = MIMEBase('multipart', 'mixed')
          outer['Subject'] = 'A subject'
          outer['To'] = 'aperson@dom.ain'
          outer['From'] = 'bperson@dom.ain'
          outer.epilogue = '\n'
          msg = MIMEText('hello world')
          outer.attach(msg)
          outer.set_boundary('BOUNDARY')
          eq(outer.as_string(), '''\
  Content-Type: multipart/mixed; boundary="BOUNDARY"
  MIME-Version: 1.0
  Subject: A subject
  To: aperson@dom.ain
  From: bperson@dom.ain
  
  --BOUNDARY
  Content-Type: text/plain; charset="us-ascii"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  
  hello world
  --BOUNDARY--
  
  ''')
  
      def test_message_external_body(self):
          eq = self.assertEqual
          msg = self._msgobj('msg_36.txt')
          eq(len(msg.get_payload()), 2)
          msg1 = msg.get_payload(1)
          eq(msg1.get_content_type(), 'multipart/alternative')
          eq(len(msg1.get_payload()), 2)
          for subpart in msg1.get_payload():
              eq(subpart.get_content_type(), 'message/external-body')
              eq(len(subpart.get_payload()), 1)
              subsubpart = subpart.get_payload(0)
              eq(subsubpart.get_content_type(), 'text/plain')
  
      def test_double_boundary(self):
          # msg_37.txt is a multipart that contains two dash-boundary's in a
          # row.  Our interpretation of RFC 2046 calls for ignoring the second
          # and subsequent boundaries.
          msg = self._msgobj('msg_37.txt')
          self.assertEqual(len(msg.get_payload()), 3)
  
      def test_nested_inner_contains_outer_boundary(self):
          eq = self.ndiffAssertEqual
          # msg_38.txt has an inner part that contains outer boundaries.  My
          # interpretation of RFC 2046 (based on sections 5.1 and 5.1.2) say
          # these are illegal and should be interpreted as unterminated inner
          # parts.
          msg = self._msgobj('msg_38.txt')
          sfp = StringIO()
          iterators._structure(msg, sfp)
          eq(sfp.getvalue(), """\
  multipart/mixed
      multipart/mixed
          multipart/alternative
              text/plain
          text/plain
      text/plain
      text/plain
  """)
  
      def test_nested_with_same_boundary(self):
          eq = self.ndiffAssertEqual
          # msg 39.txt is similarly evil in that it's got inner parts that use
          # the same boundary as outer parts.  Again, I believe the way this is
          # parsed is closest to the spirit of RFC 2046
          msg = self._msgobj('msg_39.txt')
          sfp = StringIO()
          iterators._structure(msg, sfp)
          eq(sfp.getvalue(), """\
  multipart/mixed
      multipart/mixed
          multipart/alternative
          application/octet-stream
          application/octet-stream
      text/plain
  """)
  
      def test_boundary_in_non_multipart(self):
          msg = self._msgobj('msg_40.txt')
          self.assertEqual(msg.as_string(), '''\
  MIME-Version: 1.0
  Content-Type: text/html; boundary="--961284236552522269"
  
  ----961284236552522269
  Content-Type: text/html;
  Content-Transfer-Encoding: 7Bit
  
  <html></html>
  
  ----961284236552522269--
  ''')
  
      def test_boundary_with_leading_space(self):
          eq = self.assertEqual
          msg = email.message_from_string('''\
  MIME-Version: 1.0
  Content-Type: multipart/mixed; boundary="    XXXX"
  
  --    XXXX
  Content-Type: text/plain
  
  
  --    XXXX
  Content-Type: text/plain
  
  --    XXXX--
  ''')
          self.assertTrue(msg.is_multipart())
          eq(msg.get_boundary(), '    XXXX')
          eq(len(msg.get_payload()), 2)
  
      def test_boundary_without_trailing_newline(self):
          m = Parser().parsestr("""\
  Content-Type: multipart/mixed; boundary="===============0012394164=="
  MIME-Version: 1.0
  
  --===============0012394164==
  Content-Type: image/file1.jpg
  MIME-Version: 1.0
  Content-Transfer-Encoding: base64
  
  YXNkZg==
  --===============0012394164==--""")
          self.assertEqual(m.get_payload(0).get_payload(), 'YXNkZg==')
  
  
  
  # Test some badly formatted messages
  class TestNonConformant(TestEmailBase):
  
      def test_parse_missing_minor_type(self):
          eq = self.assertEqual
          msg = self._msgobj('msg_14.txt')
          eq(msg.get_content_type(), 'text/plain')
          eq(msg.get_content_maintype(), 'text')
          eq(msg.get_content_subtype(), 'plain')
  
      # test_defect_handling
      def test_same_boundary_inner_outer(self):
          unless = self.assertTrue
          msg = self._msgobj('msg_15.txt')
          # XXX We can probably eventually do better
          inner = msg.get_payload(0)
          unless(hasattr(inner, 'defects'))
          self.assertEqual(len(inner.defects), 1)
          unless(isinstance(inner.defects[0],
                            errors.StartBoundaryNotFoundDefect))
  
      # test_defect_handling
      def test_multipart_no_boundary(self):
          unless = self.assertTrue
          msg = self._msgobj('msg_25.txt')
          unless(isinstance(msg.get_payload(), str))
          self.assertEqual(len(msg.defects), 2)
          unless(isinstance(msg.defects[0],
                            errors.NoBoundaryInMultipartDefect))
          unless(isinstance(msg.defects[1],
                            errors.MultipartInvariantViolationDefect))
  
      multipart_msg = textwrap.dedent("""\
          Date: Wed, 14 Nov 2007 12:56:23 GMT
          From: foo@bar.invalid
          To: foo@bar.invalid
          Subject: Content-Transfer-Encoding: base64 and multipart
          MIME-Version: 1.0
          Content-Type: multipart/mixed;
              boundary="===============3344438784458119861=="{}
  
          --===============3344438784458119861==
          Content-Type: text/plain
  
          Test message
  
          --===============3344438784458119861==
          Content-Type: application/octet-stream
          Content-Transfer-Encoding: base64
  
          YWJj
  
          --===============3344438784458119861==--
          """)
  
      # test_defect_handling
      def test_multipart_invalid_cte(self):
          msg = self._str_msg(
              self.multipart_msg.format("\nContent-Transfer-Encoding: base64"))
          self.assertEqual(len(msg.defects), 1)
          self.assertIsInstance(msg.defects[0],
              errors.InvalidMultipartContentTransferEncodingDefect)
  
      # test_defect_handling
      def test_multipart_no_cte_no_defect(self):
          msg = self._str_msg(self.multipart_msg.format(''))
          self.assertEqual(len(msg.defects), 0)
  
      # test_defect_handling
      def test_multipart_valid_cte_no_defect(self):
          for cte in ('7bit', '8bit', 'BINary'):
              msg = self._str_msg(
                  self.multipart_msg.format(
                      "\nContent-Transfer-Encoding: {}".format(cte)))
              self.assertEqual(len(msg.defects), 0)
  
      # test_headerregistry.TestContentTyopeHeader invalid_1 and invalid_2.
      def test_invalid_content_type(self):
          eq = self.assertEqual
          neq = self.ndiffAssertEqual
          msg = Message()
          # RFC 2045, $5.2 says invalid yields text/plain
          msg['Content-Type'] = 'text'
          eq(msg.get_content_maintype(), 'text')
          eq(msg.get_content_subtype(), 'plain')
          eq(msg.get_content_type(), 'text/plain')
          # Clear the old value and try something /really/ invalid
          del msg['content-type']
          msg['Content-Type'] = 'foo'
          eq(msg.get_content_maintype(), 'text')
          eq(msg.get_content_subtype(), 'plain')
          eq(msg.get_content_type(), 'text/plain')
          # Still, make sure that the message is idempotently generated
          s = StringIO()
          g = Generator(s)
          g.flatten(msg)
          neq(s.getvalue(), 'Content-Type: foo\n\n')
  
      def test_no_start_boundary(self):
          eq = self.ndiffAssertEqual
          msg = self._msgobj('msg_31.txt')
          eq(msg.get_payload(), """\
  --BOUNDARY
  Content-Type: text/plain
  
  message 1
  
  --BOUNDARY
  Content-Type: text/plain
  
  message 2
  
  --BOUNDARY--
  """)
  
      def test_no_separating_blank_line(self):
          eq = self.ndiffAssertEqual
          msg = self._msgobj('msg_35.txt')
          eq(msg.as_string(), """\
  From: aperson@dom.ain
  To: bperson@dom.ain
  Subject: here's something interesting
  
  counter to RFC 2822, there's no separating newline here
  """)
  
      # test_defect_handling
      def test_lying_multipart(self):
          unless = self.assertTrue
          msg = self._msgobj('msg_41.txt')
          unless(hasattr(msg, 'defects'))
          self.assertEqual(len(msg.defects), 2)
          unless(isinstance(msg.defects[0],
                            errors.NoBoundaryInMultipartDefect))
          unless(isinstance(msg.defects[1],
                            errors.MultipartInvariantViolationDefect))
  
      # test_defect_handling
      def test_missing_start_boundary(self):
          outer = self._msgobj('msg_42.txt')
          # The message structure is:
          #
          # multipart/mixed
          #    text/plain
          #    message/rfc822
          #        multipart/mixed [*]
          #
          # [*] This message is missing its start boundary
          bad = outer.get_payload(1).get_payload(0)
          self.assertEqual(len(bad.defects), 1)
          self.assertTrue(isinstance(bad.defects[0],
                                     errors.StartBoundaryNotFoundDefect))
  
      # test_defect_handling
      def test_first_line_is_continuation_header(self):
          eq = self.assertEqual
          m = ' Line 1\nSubject: test\n\nbody'
          msg = email.message_from_string(m)
          eq(msg.keys(), ['Subject'])
          eq(msg.get_payload(), 'body')
          eq(len(msg.defects), 1)
          self.assertDefectsEqual(msg.defects,
                                   [errors.FirstHeaderLineIsContinuationDefect])
          eq(msg.defects[0].line, ' Line 1\n')
  
      # test_defect_handling
      def test_missing_header_body_separator(self):
          # Our heuristic if we see a line that doesn't look like a header (no
          # leading whitespace but no ':') is to assume that the blank line that
          # separates the header from the body is missing, and to stop parsing
          # headers and start parsing the body.
          msg = self._str_msg('Subject: test\nnot a header\nTo: abc\n\nb\n')
          self.assertEqual(msg.keys(), ['Subject'])
          self.assertEqual(msg.get_payload(), 'not a header\nTo: abc\n\nb\n')
          self.assertDefectsEqual(msg.defects,
                                  [errors.MissingHeaderBodySeparatorDefect])
  
  
  # Test RFC 2047 header encoding and decoding
  class TestRFC2047(TestEmailBase):
      def test_rfc2047_multiline(self):
          eq = self.assertEqual
          s = """Re: =?mac-iceland?q?r=8Aksm=9Arg=8Cs?= baz
   foo bar =?mac-iceland?q?r=8Aksm=9Arg=8Cs?="""
          dh = decode_header(s)
          eq(dh, [
              (b'Re: ', None),
              (b'r\x8aksm\x9arg\x8cs', 'mac-iceland'),
              (b' baz foo bar ', None),
              (b'r\x8aksm\x9arg\x8cs', 'mac-iceland')])
          header = make_header(dh)
          eq(str(header),
             'Re: r\xe4ksm\xf6rg\xe5s baz foo bar r\xe4ksm\xf6rg\xe5s')
          self.ndiffAssertEqual(header.encode(maxlinelen=76), """\
  Re: =?mac-iceland?q?r=8Aksm=9Arg=8Cs?= baz foo bar =?mac-iceland?q?r=8Aksm?=
   =?mac-iceland?q?=9Arg=8Cs?=""")
  
      def test_whitespace_keeper_unicode(self):
          eq = self.assertEqual
          s = '=?ISO-8859-1?Q?Andr=E9?= Pirard <pirard@dom.ain>'
          dh = decode_header(s)
          eq(dh, [(b'Andr\xe9', 'iso-8859-1'),
                  (b' Pirard <pirard@dom.ain>', None)])
          header = str(make_header(dh))
          eq(header, 'Andr\xe9 Pirard <pirard@dom.ain>')
  
      def test_whitespace_keeper_unicode_2(self):
          eq = self.assertEqual
          s = 'The =?iso-8859-1?b?cXVpY2sgYnJvd24gZm94?= jumped over the =?iso-8859-1?b?bGF6eSBkb2c=?='
          dh = decode_header(s)
          eq(dh, [(b'The ', None), (b'quick brown fox', 'iso-8859-1'),
                  (b' jumped over the ', None), (b'lazy dog', 'iso-8859-1')])
          hu = str(make_header(dh))
          eq(hu, 'The quick brown fox jumped over the lazy dog')
  
      def test_rfc2047_missing_whitespace(self):
          s = 'Sm=?ISO-8859-1?B?9g==?=rg=?ISO-8859-1?B?5Q==?=sbord'
          dh = decode_header(s)
          self.assertEqual(dh, [(b'Sm', None), (b'\xf6', 'iso-8859-1'),
                                (b'rg', None), (b'\xe5', 'iso-8859-1'),
                                (b'sbord', None)])
  
      def test_rfc2047_with_whitespace(self):
          s = 'Sm =?ISO-8859-1?B?9g==?= rg =?ISO-8859-1?B?5Q==?= sbord'
          dh = decode_header(s)
          self.assertEqual(dh, [(b'Sm ', None), (b'\xf6', 'iso-8859-1'),
                                (b' rg ', None), (b'\xe5', 'iso-8859-1'),
                                (b' sbord', None)])
  
      def test_rfc2047_B_bad_padding(self):
          s = '=?iso-8859-1?B?%s?='
          data = [                                # only test complete bytes
              ('dm==', b'v'), ('dm=', b'v'), ('dm', b'v'),
              ('dmk=', b'vi'), ('dmk', b'vi')
            ]
          for q, a in data:
              dh = decode_header(s % q)
              self.assertEqual(dh, [(a, 'iso-8859-1')])
  
      def test_rfc2047_Q_invalid_digits(self):
          # issue 10004.
          s = '=?iso-8659-1?Q?andr=e9=zz?='
          self.assertEqual(decode_header(s),
                          [(b'andr\xe9=zz', 'iso-8659-1')])
  
      def test_rfc2047_rfc2047_1(self):
          # 1st testcase at end of rfc2047
          s = '(=?ISO-8859-1?Q?a?=)'
          self.assertEqual(decode_header(s),
              [(b'(', None), (b'a', 'iso-8859-1'), (b')', None)])
  
      def test_rfc2047_rfc2047_2(self):
          # 2nd testcase at end of rfc2047
          s = '(=?ISO-8859-1?Q?a?= b)'
          self.assertEqual(decode_header(s),
              [(b'(', None), (b'a', 'iso-8859-1'), (b' b)', None)])
  
      def test_rfc2047_rfc2047_3(self):
          # 3rd testcase at end of rfc2047
          s = '(=?ISO-8859-1?Q?a?= =?ISO-8859-1?Q?b?=)'
          self.assertEqual(decode_header(s),
              [(b'(', None), (b'ab', 'iso-8859-1'), (b')', None)])
  
      def test_rfc2047_rfc2047_4(self):
          # 4th testcase at end of rfc2047
          s = '(=?ISO-8859-1?Q?a?=  =?ISO-8859-1?Q?b?=)'
          self.assertEqual(decode_header(s),
              [(b'(', None), (b'ab', 'iso-8859-1'), (b')', None)])
  
      def test_rfc2047_rfc2047_5a(self):
          # 5th testcase at end of rfc2047 newline is \r\n
          s = '(=?ISO-8859-1?Q?a?=\r\n    =?ISO-8859-1?Q?b?=)'
          self.assertEqual(decode_header(s),
              [(b'(', None), (b'ab', 'iso-8859-1'), (b')', None)])
  
      def test_rfc2047_rfc2047_5b(self):
          # 5th testcase at end of rfc2047 newline is \n
          s = '(=?ISO-8859-1?Q?a?=\n    =?ISO-8859-1?Q?b?=)'
          self.assertEqual(decode_header(s),
              [(b'(', None), (b'ab', 'iso-8859-1'), (b')', None)])
  
      def test_rfc2047_rfc2047_6(self):
          # 6th testcase at end of rfc2047
          s = '(=?ISO-8859-1?Q?a_b?=)'
          self.assertEqual(decode_header(s),
              [(b'(', None), (b'a b', 'iso-8859-1'), (b')', None)])
  
      def test_rfc2047_rfc2047_7(self):
          # 7th testcase at end of rfc2047
          s = '(=?ISO-8859-1?Q?a?= =?ISO-8859-2?Q?_b?=)'
          self.assertEqual(decode_header(s),
              [(b'(', None), (b'a', 'iso-8859-1'), (b' b', 'iso-8859-2'),
               (b')', None)])
          self.assertEqual(make_header(decode_header(s)).encode(), s.lower())
          self.assertEqual(str(make_header(decode_header(s))), '(a b)')
  
      def test_multiline_header(self):
          s = '=?windows-1252?q?=22M=FCller_T=22?=\r\n <T.Mueller@xxx.com>'
          self.assertEqual(decode_header(s),
              [(b'"M\xfcller T"', 'windows-1252'),
               (b'<T.Mueller@xxx.com>', None)])
          self.assertEqual(make_header(decode_header(s)).encode(),
                           ''.join(s.splitlines()))
          self.assertEqual(str(make_header(decode_header(s))),
                           '"Müller T" <T.Mueller@xxx.com>')
  
  
  # Test the MIMEMessage class
  class TestMIMEMessage(TestEmailBase):
      def setUp(self):
          with openfile('msg_11.txt') as fp:
              self._text = fp.read()
  
      def test_type_error(self):
          self.assertRaises(TypeError, MIMEMessage, 'a plain string')
  
      def test_valid_argument(self):
          eq = self.assertEqual
          unless = self.assertTrue
          subject = 'A sub-message'
          m = Message()
          m['Subject'] = subject
          r = MIMEMessage(m)
          eq(r.get_content_type(), 'message/rfc822')
          payload = r.get_payload()
          unless(isinstance(payload, list))
          eq(len(payload), 1)
          subpart = payload[0]
          unless(subpart is m)
          eq(subpart['subject'], subject)
  
      def test_bad_multipart(self):
          msg1 = Message()
          msg1['Subject'] = 'subpart 1'
          msg2 = Message()
          msg2['Subject'] = 'subpart 2'
          r = MIMEMessage(msg1)
          self.assertRaises(errors.MultipartConversionError, r.attach, msg2)
  
      def test_generate(self):
          # First craft the message to be encapsulated
          m = Message()
          m['Subject'] = 'An enclosed message'
          m.set_payload('Here is the body of the message.\n')
          r = MIMEMessage(m)
          r['Subject'] = 'The enclosing message'
          s = StringIO()
          g = Generator(s)
          g.flatten(r)
          self.assertEqual(s.getvalue(), """\
  Content-Type: message/rfc822
  MIME-Version: 1.0
  Subject: The enclosing message
  
  Subject: An enclosed message
  
  Here is the body of the message.
  """)
  
      def test_parse_message_rfc822(self):
          eq = self.assertEqual
          unless = self.assertTrue
          msg = self._msgobj('msg_11.txt')
          eq(msg.get_content_type(), 'message/rfc822')
          payload = msg.get_payload()
          unless(isinstance(payload, list))
          eq(len(payload), 1)
          submsg = payload[0]
          self.assertTrue(isinstance(submsg, Message))
          eq(submsg['subject'], 'An enclosed message')
          eq(submsg.get_payload(), 'Here is the body of the message.\n')
  
      def test_dsn(self):
          eq = self.assertEqual
          unless = self.assertTrue
          # msg 16 is a Delivery Status Notification, see RFC 1894
          msg = self._msgobj('msg_16.txt')
          eq(msg.get_content_type(), 'multipart/report')
          unless(msg.is_multipart())
          eq(len(msg.get_payload()), 3)
          # Subpart 1 is a text/plain, human readable section
          subpart = msg.get_payload(0)
          eq(subpart.get_content_type(), 'text/plain')
          eq(subpart.get_payload(), """\
  This report relates to a message you sent with the following header fields:
  
    Message-id: <002001c144a6$8752e060$56104586@oxy.edu>
    Date: Sun, 23 Sep 2001 20:10:55 -0700
    From: "Ian T. Henry" <henryi@oxy.edu>
    To: SoCal Raves <scr@socal-raves.org>
    Subject: [scr] yeah for Ians!!
  
  Your message cannot be delivered to the following recipients:
  
    Recipient address: jangel1@cougar.noc.ucla.edu
    Reason: recipient reached disk quota
  
  """)
          # Subpart 2 contains the machine parsable DSN information.  It
          # consists of two blocks of headers, represented by two nested Message
          # objects.
          subpart = msg.get_payload(1)
          eq(subpart.get_content_type(), 'message/delivery-status')
          eq(len(subpart.get_payload()), 2)
          # message/delivery-status should treat each block as a bunch of
          # headers, i.e. a bunch of Message objects.
          dsn1 = subpart.get_payload(0)
          unless(isinstance(dsn1, Message))
          eq(dsn1['original-envelope-id'], '0GK500B4HD0888@cougar.noc.ucla.edu')
          eq(dsn1.get_param('dns', header='reporting-mta'), '')
          # Try a missing one <wink>
          eq(dsn1.get_param('nsd', header='reporting-mta'), None)
          dsn2 = subpart.get_payload(1)
          unless(isinstance(dsn2, Message))
          eq(dsn2['action'], 'failed')
          eq(dsn2.get_params(header='original-recipient'),
             [('rfc822', ''), ('jangel1@cougar.noc.ucla.edu', '')])
          eq(dsn2.get_param('rfc822', header='final-recipient'), '')
          # Subpart 3 is the original message
          subpart = msg.get_payload(2)
          eq(subpart.get_content_type(), 'message/rfc822')
          payload = subpart.get_payload()
          unless(isinstance(payload, list))
          eq(len(payload), 1)
          subsubpart = payload[0]
          unless(isinstance(subsubpart, Message))
          eq(subsubpart.get_content_type(), 'text/plain')
          eq(subsubpart['message-id'],
             '<002001c144a6$8752e060$56104586@oxy.edu>')
  
      def test_epilogue(self):
          eq = self.ndiffAssertEqual
          with openfile('msg_21.txt') as fp:
              text = fp.read()
          msg = Message()
          msg['From'] = 'aperson@dom.ain'
          msg['To'] = 'bperson@dom.ain'
          msg['Subject'] = 'Test'
          msg.preamble = 'MIME message'
          msg.epilogue = 'End of MIME message\n'
          msg1 = MIMEText('One')
          msg2 = MIMEText('Two')
          msg.add_header('Content-Type', 'multipart/mixed', boundary='BOUNDARY')
          msg.attach(msg1)
          msg.attach(msg2)
          sfp = StringIO()
          g = Generator(sfp)
          g.flatten(msg)
          eq(sfp.getvalue(), text)
  
      def test_no_nl_preamble(self):
          eq = self.ndiffAssertEqual
          msg = Message()
          msg['From'] = 'aperson@dom.ain'
          msg['To'] = 'bperson@dom.ain'
          msg['Subject'] = 'Test'
          msg.preamble = 'MIME message'
          msg.epilogue = ''
          msg1 = MIMEText('One')
          msg2 = MIMEText('Two')
          msg.add_header('Content-Type', 'multipart/mixed', boundary='BOUNDARY')
          msg.attach(msg1)
          msg.attach(msg2)
          eq(msg.as_string(), """\
  From: aperson@dom.ain
  To: bperson@dom.ain
  Subject: Test
  Content-Type: multipart/mixed; boundary="BOUNDARY"
  
  MIME message
  --BOUNDARY
  Content-Type: text/plain; charset="us-ascii"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  
  One
  --BOUNDARY
  Content-Type: text/plain; charset="us-ascii"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  
  Two
  --BOUNDARY--
  """)
  
      def test_default_type(self):
          eq = self.assertEqual
          with openfile('msg_30.txt') as fp:
              msg = email.message_from_file(fp)
          container1 = msg.get_payload(0)
          eq(container1.get_default_type(), 'message/rfc822')
          eq(container1.get_content_type(), 'message/rfc822')
          container2 = msg.get_payload(1)
          eq(container2.get_default_type(), 'message/rfc822')
          eq(container2.get_content_type(), 'message/rfc822')
          container1a = container1.get_payload(0)
          eq(container1a.get_default_type(), 'text/plain')
          eq(container1a.get_content_type(), 'text/plain')
          container2a = container2.get_payload(0)
          eq(container2a.get_default_type(), 'text/plain')
          eq(container2a.get_content_type(), 'text/plain')
  
      def test_default_type_with_explicit_container_type(self):
          eq = self.assertEqual
          with openfile('msg_28.txt') as fp:
              msg = email.message_from_file(fp)
          container1 = msg.get_payload(0)
          eq(container1.get_default_type(), 'message/rfc822')
          eq(container1.get_content_type(), 'message/rfc822')
          container2 = msg.get_payload(1)
          eq(container2.get_default_type(), 'message/rfc822')
          eq(container2.get_content_type(), 'message/rfc822')
          container1a = container1.get_payload(0)
          eq(container1a.get_default_type(), 'text/plain')
          eq(container1a.get_content_type(), 'text/plain')
          container2a = container2.get_payload(0)
          eq(container2a.get_default_type(), 'text/plain')
          eq(container2a.get_content_type(), 'text/plain')
  
      def test_default_type_non_parsed(self):
          eq = self.assertEqual
          neq = self.ndiffAssertEqual
          # Set up container
          container = MIMEMultipart('digest', 'BOUNDARY')
          container.epilogue = ''
          # Set up subparts
          subpart1a = MIMEText('message 1\n')
          subpart2a = MIMEText('message 2\n')
          subpart1 = MIMEMessage(subpart1a)
          subpart2 = MIMEMessage(subpart2a)
          container.attach(subpart1)
          container.attach(subpart2)
          eq(subpart1.get_content_type(), 'message/rfc822')
          eq(subpart1.get_default_type(), 'message/rfc822')
          eq(subpart2.get_content_type(), 'message/rfc822')
          eq(subpart2.get_default_type(), 'message/rfc822')
          neq(container.as_string(0), '''\
  Content-Type: multipart/digest; boundary="BOUNDARY"
  MIME-Version: 1.0
  
  --BOUNDARY
  Content-Type: message/rfc822
  MIME-Version: 1.0
  
  Content-Type: text/plain; charset="us-ascii"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  
  message 1
  
  --BOUNDARY
  Content-Type: message/rfc822
  MIME-Version: 1.0
  
  Content-Type: text/plain; charset="us-ascii"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  
  message 2
  
  --BOUNDARY--
  ''')
          del subpart1['content-type']
          del subpart1['mime-version']
          del subpart2['content-type']
          del subpart2['mime-version']
          eq(subpart1.get_content_type(), 'message/rfc822')
          eq(subpart1.get_default_type(), 'message/rfc822')
          eq(subpart2.get_content_type(), 'message/rfc822')
          eq(subpart2.get_default_type(), 'message/rfc822')
          neq(container.as_string(0), '''\
  Content-Type: multipart/digest; boundary="BOUNDARY"
  MIME-Version: 1.0
  
  --BOUNDARY
  
  Content-Type: text/plain; charset="us-ascii"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  
  message 1
  
  --BOUNDARY
  
  Content-Type: text/plain; charset="us-ascii"
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  
  message 2
  
  --BOUNDARY--
  ''')
  
      def test_mime_attachments_in_constructor(self):
          eq = self.assertEqual
          text1 = MIMEText('')
          text2 = MIMEText('')
          msg = MIMEMultipart(_subparts=(text1, text2))
          eq(len(msg.get_payload()), 2)
          eq(msg.get_payload(0), text1)
          eq(msg.get_payload(1), text2)
  
      def test_default_multipart_constructor(self):
          msg = MIMEMultipart()
          self.assertTrue(msg.is_multipart())
  
  
  # A general test of parser->model->generator idempotency.  IOW, read a message
  # in, parse it into a message object tree, then without touching the tree,
  # regenerate the plain text.  The original text and the transformed text
  # should be identical.  Note: that we ignore the Unix-From since that may
  # contain a changed date.
  class TestIdempotent(TestEmailBase):
  
      linesep = '\n'
  
      def _msgobj(self, filename):
          with openfile(filename) as fp:
              data = fp.read()
          msg = email.message_from_string(data)
          return msg, data
  
      def _idempotent(self, msg, text, unixfrom=False):
          eq = self.ndiffAssertEqual
          s = StringIO()
          g = Generator(s, maxheaderlen=0)
          g.flatten(msg, unixfrom=unixfrom)
          eq(text, s.getvalue())
  
      def test_parse_text_message(self):
          eq = self.assertEqual
          msg, text = self._msgobj('msg_01.txt')
          eq(msg.get_content_type(), 'text/plain')
          eq(msg.get_content_maintype(), 'text')
          eq(msg.get_content_subtype(), 'plain')
          eq(msg.get_params()[1], ('charset', 'us-ascii'))
          eq(msg.get_param('charset'), 'us-ascii')
          eq(msg.preamble, None)
          eq(msg.epilogue, None)
          self._idempotent(msg, text)
  
      def test_parse_untyped_message(self):
          eq = self.assertEqual
          msg, text = self._msgobj('msg_03.txt')
          eq(msg.get_content_type(), 'text/plain')
          eq(msg.get_params(), None)
          eq(msg.get_param('charset'), None)
          self._idempotent(msg, text)
  
      def test_simple_multipart(self):
          msg, text = self._msgobj('msg_04.txt')
          self._idempotent(msg, text)
  
      def test_MIME_digest(self):
          msg, text = self._msgobj('msg_02.txt')
          self._idempotent(msg, text)
  
      def test_long_header(self):
          msg, text = self._msgobj('msg_27.txt')
          self._idempotent(msg, text)
  
      def test_MIME_digest_with_part_headers(self):
          msg, text = self._msgobj('msg_28.txt')
          self._idempotent(msg, text)
  
      def test_mixed_with_image(self):
          msg, text = self._msgobj('msg_06.txt')
          self._idempotent(msg, text)
  
      def test_multipart_report(self):
          msg, text = self._msgobj('msg_05.txt')
          self._idempotent(msg, text)
  
      def test_dsn(self):
          msg, text = self._msgobj('msg_16.txt')
          self._idempotent(msg, text)
  
      def test_preamble_epilogue(self):
          msg, text = self._msgobj('msg_21.txt')
          self._idempotent(msg, text)
  
      def test_multipart_one_part(self):
          msg, text = self._msgobj('msg_23.txt')
          self._idempotent(msg, text)
  
      def test_multipart_no_parts(self):
          msg, text = self._msgobj('msg_24.txt')
          self._idempotent(msg, text)
  
      def test_no_start_boundary(self):
          msg, text = self._msgobj('msg_31.txt')
          self._idempotent(msg, text)
  
      def test_rfc2231_charset(self):
          msg, text = self._msgobj('msg_32.txt')
          self._idempotent(msg, text)
  
      def test_more_rfc2231_parameters(self):
          msg, text = self._msgobj('msg_33.txt')
          self._idempotent(msg, text)
  
      def test_text_plain_in_a_multipart_digest(self):
          msg, text = self._msgobj('msg_34.txt')
          self._idempotent(msg, text)
  
      def test_nested_multipart_mixeds(self):
          msg, text = self._msgobj('msg_12a.txt')
          self._idempotent(msg, text)
  
      def test_message_external_body_idempotent(self):
          msg, text = self._msgobj('msg_36.txt')
          self._idempotent(msg, text)
  
      def test_message_delivery_status(self):
          msg, text = self._msgobj('msg_43.txt')
          self._idempotent(msg, text, unixfrom=True)
  
      def test_message_signed_idempotent(self):
          msg, text = self._msgobj('msg_45.txt')
          self._idempotent(msg, text)
  
      def test_content_type(self):
          eq = self.assertEqual
          unless = self.assertTrue
          # Get a message object and reset the seek pointer for other tests
          msg, text = self._msgobj('msg_05.txt')
          eq(msg.get_content_type(), 'multipart/report')
          # Test the Content-Type: parameters
          params = {}
          for pk, pv in msg.get_params():
              params[pk] = pv
          eq(params['report-type'], 'delivery-status')
          eq(params['boundary'], 'D1690A7AC1.996856090/mail.example.com')
          eq(msg.preamble, 'This is a MIME-encapsulated message.' + self.linesep)
          eq(msg.epilogue, self.linesep)
          eq(len(msg.get_payload()), 3)
          # Make sure the subparts are what we expect
          msg1 = msg.get_payload(0)
          eq(msg1.get_content_type(), 'text/plain')
          eq(msg1.get_payload(), 'Yadda yadda yadda' + self.linesep)
          msg2 = msg.get_payload(1)
          eq(msg2.get_content_type(), 'text/plain')
          eq(msg2.get_payload(), 'Yadda yadda yadda' + self.linesep)
          msg3 = msg.get_payload(2)
          eq(msg3.get_content_type(), 'message/rfc822')
          self.assertTrue(isinstance(msg3, Message))
          payload = msg3.get_payload()
          unless(isinstance(payload, list))
          eq(len(payload), 1)
          msg4 = payload[0]
          unless(isinstance(msg4, Message))
          eq(msg4.get_payload(), 'Yadda yadda yadda' + self.linesep)
  
      def test_parser(self):
          eq = self.assertEqual
          unless = self.assertTrue
          msg, text = self._msgobj('msg_06.txt')
          # Check some of the outer headers
          eq(msg.get_content_type(), 'message/rfc822')
          # Make sure the payload is a list of exactly one sub-Message, and that
          # that submessage has a type of text/plain
          payload = msg.get_payload()
          unless(isinstance(payload, list))
          eq(len(payload), 1)
          msg1 = payload[0]
          self.assertTrue(isinstance(msg1, Message))
          eq(msg1.get_content_type(), 'text/plain')
          self.assertTrue(isinstance(msg1.get_payload(), str))
          eq(msg1.get_payload(), self.linesep)
  
  
  
  # Test various other bits of the package's functionality
  class TestMiscellaneous(TestEmailBase):
      def test_message_from_string(self):
          with openfile('msg_01.txt') as fp:
              text = fp.read()
          msg = email.message_from_string(text)
          s = StringIO()
          # Don't wrap/continue long headers since we're trying to test
          # idempotency.
          g = Generator(s, maxheaderlen=0)
          g.flatten(msg)
          self.assertEqual(text, s.getvalue())
  
      def test_message_from_file(self):
          with openfile('msg_01.txt') as fp:
              text = fp.read()
              fp.seek(0)
              msg = email.message_from_file(fp)
              s = StringIO()
              # Don't wrap/continue long headers since we're trying to test
              # idempotency.
              g = Generator(s, maxheaderlen=0)
              g.flatten(msg)
              self.assertEqual(text, s.getvalue())
  
      def test_message_from_string_with_class(self):
          unless = self.assertTrue
          with openfile('msg_01.txt') as fp:
              text = fp.read()
  
          # Create a subclass
          class MyMessage(Message):
              pass
  
          msg = email.message_from_string(text, MyMessage)
          unless(isinstance(msg, MyMessage))
          # Try something more complicated
          with openfile('msg_02.txt') as fp:
              text = fp.read()
          msg = email.message_from_string(text, MyMessage)
          for subpart in msg.walk():
              unless(isinstance(subpart, MyMessage))
  
      def test_message_from_file_with_class(self):
          unless = self.assertTrue
          # Create a subclass
          class MyMessage(Message):
              pass
  
          with openfile('msg_01.txt') as fp:
              msg = email.message_from_file(fp, MyMessage)
          unless(isinstance(msg, MyMessage))
          # Try something more complicated
          with openfile('msg_02.txt') as fp:
              msg = email.message_from_file(fp, MyMessage)
          for subpart in msg.walk():
              unless(isinstance(subpart, MyMessage))
  
      def test_custom_message_does_not_require_arguments(self):
          class MyMessage(Message):
              def __init__(self):
                  super().__init__()
          msg = self._str_msg("Subject: test\n\ntest", MyMessage)
          self.assertTrue(isinstance(msg, MyMessage))
  
      def test__all__(self):
          module = __import__('email')
          self.assertEqual(sorted(module.__all__), [
              'base64mime', 'charset', 'encoders', 'errors', 'feedparser',
              'generator', 'header', 'iterators', 'message',
              'message_from_binary_file', 'message_from_bytes',
              'message_from_file', 'message_from_string', 'mime', 'parser',
              'quoprimime', 'utils',
              ])
  
      def test_formatdate(self):
          now = time.time()
          self.assertEqual(utils.parsedate(utils.formatdate(now))[:6],
                           time.gmtime(now)[:6])
  
      def test_formatdate_localtime(self):
          now = time.time()
          self.assertEqual(
              utils.parsedate(utils.formatdate(now, localtime=True))[:6],
              time.localtime(now)[:6])
  
      def test_formatdate_usegmt(self):
          now = time.time()
          self.assertEqual(
              utils.formatdate(now, localtime=False),
              time.strftime('%a, %d %b %Y %H:%M:%S -0000', time.gmtime(now)))
          self.assertEqual(
              utils.formatdate(now, localtime=False, usegmt=True),
              time.strftime('%a, %d %b %Y %H:%M:%S GMT', time.gmtime(now)))
  
      # parsedate and parsedate_tz will become deprecated interfaces someday
      def test_parsedate_returns_None_for_invalid_strings(self):
          self.assertIsNone(utils.parsedate(''))
          self.assertIsNone(utils.parsedate_tz(''))
          self.assertIsNone(utils.parsedate('0'))
          self.assertIsNone(utils.parsedate_tz('0'))
          self.assertIsNone(utils.parsedate('A Complete Waste of Time'))
          self.assertIsNone(utils.parsedate_tz('A Complete Waste of Time'))
          # Not a part of the spec but, but this has historically worked:
          self.assertIsNone(utils.parsedate(None))
          self.assertIsNone(utils.parsedate_tz(None))
  
      def test_parsedate_compact(self):
          # The FWS after the comma is optional
          self.assertEqual(utils.parsedate('Wed,3 Apr 2002 14:58:26 +0800'),
                           utils.parsedate('Wed, 3 Apr 2002 14:58:26 +0800'))
  
      def test_parsedate_no_dayofweek(self):
          eq = self.assertEqual
          eq(utils.parsedate_tz('25 Feb 2003 13:47:26 -0800'),
             (2003, 2, 25, 13, 47, 26, 0, 1, -1, -28800))
  
      def test_parsedate_compact_no_dayofweek(self):
          eq = self.assertEqual
          eq(utils.parsedate_tz('5 Feb 2003 13:47:26 -0800'),
             (2003, 2, 5, 13, 47, 26, 0, 1, -1, -28800))
  
      def test_parsedate_no_space_before_positive_offset(self):
          self.assertEqual(utils.parsedate_tz('Wed, 3 Apr 2002 14:58:26+0800'),
             (2002, 4, 3, 14, 58, 26, 0, 1, -1, 28800))
  
      def test_parsedate_no_space_before_negative_offset(self):
          # Issue 1155362: we already handled '+' for this case.
          self.assertEqual(utils.parsedate_tz('Wed, 3 Apr 2002 14:58:26-0800'),
             (2002, 4, 3, 14, 58, 26, 0, 1, -1, -28800))
  
  
      def test_parsedate_accepts_time_with_dots(self):
          eq = self.assertEqual
          eq(utils.parsedate_tz('5 Feb 2003 13.47.26 -0800'),
             (2003, 2, 5, 13, 47, 26, 0, 1, -1, -28800))
          eq(utils.parsedate_tz('5 Feb 2003 13.47 -0800'),
             (2003, 2, 5, 13, 47, 0, 0, 1, -1, -28800))
  
      def test_parsedate_acceptable_to_time_functions(self):
          eq = self.assertEqual
          timetup = utils.parsedate('5 Feb 2003 13:47:26 -0800')
          t = int(time.mktime(timetup))
          eq(time.localtime(t)[:6], timetup[:6])
          eq(int(time.strftime('%Y', timetup)), 2003)
          timetup = utils.parsedate_tz('5 Feb 2003 13:47:26 -0800')
          t = int(time.mktime(timetup[:9]))
          eq(time.localtime(t)[:6], timetup[:6])
          eq(int(time.strftime('%Y', timetup[:9])), 2003)
  
      def test_mktime_tz(self):
          self.assertEqual(utils.mktime_tz((1970, 1, 1, 0, 0, 0,
                                            -1, -1, -1, 0)), 0)
          self.assertEqual(utils.mktime_tz((1970, 1, 1, 0, 0, 0,
                                            -1, -1, -1, 1234)), -1234)
  
      def test_parsedate_y2k(self):
          """Test for parsing a date with a two-digit year.
  
          Parsing a date with a two-digit year should return the correct
          four-digit year. RFC822 allows two-digit years, but RFC2822 (which
          obsoletes RFC822) requires four-digit years.
  
          """
          self.assertEqual(utils.parsedate_tz('25 Feb 03 13:47:26 -0800'),
                           utils.parsedate_tz('25 Feb 2003 13:47:26 -0800'))
          self.assertEqual(utils.parsedate_tz('25 Feb 71 13:47:26 -0800'),
                           utils.parsedate_tz('25 Feb 1971 13:47:26 -0800'))
  
      def test_parseaddr_empty(self):
          self.assertEqual(utils.parseaddr('<>'), ('', ''))
          self.assertEqual(utils.formataddr(utils.parseaddr('<>')), '')
  
      def test_noquote_dump(self):
          self.assertEqual(
              utils.formataddr(('A Silly Person', 'person@dom.ain')),
              'A Silly Person <person@dom.ain>')
  
      def test_escape_dump(self):
          self.assertEqual(
              utils.formataddr(('A (Very) Silly Person', 'person@dom.ain')),
              r'"A (Very) Silly Person" <person@dom.ain>')
          self.assertEqual(
              utils.parseaddr(r'"A \(Very\) Silly Person" <person@dom.ain>'),
              ('A (Very) Silly Person', 'person@dom.ain'))
          a = r'A \(Special\) Person'
          b = 'person@dom.ain'
          self.assertEqual(utils.parseaddr(utils.formataddr((a, b))), (a, b))
  
      def test_escape_backslashes(self):
          self.assertEqual(
              utils.formataddr(('Arthur \Backslash\ Foobar', 'person@dom.ain')),
              r'"Arthur \\Backslash\\ Foobar" <person@dom.ain>')
          a = r'Arthur \Backslash\ Foobar'
          b = 'person@dom.ain'
          self.assertEqual(utils.parseaddr(utils.formataddr((a, b))), (a, b))
  
      def test_quotes_unicode_names(self):
          # issue 1690608.  email.utils.formataddr() should be rfc2047 aware.
          name = "H\u00e4ns W\u00fcrst"
          addr = 'person@dom.ain'
          utf8_base64 = "=?utf-8?b?SMOkbnMgV8O8cnN0?= <person@dom.ain>"
          latin1_quopri = "=?iso-8859-1?q?H=E4ns_W=FCrst?= <person@dom.ain>"
          self.assertEqual(utils.formataddr((name, addr)), utf8_base64)
          self.assertEqual(utils.formataddr((name, addr), 'iso-8859-1'),
              latin1_quopri)
  
      def test_accepts_any_charset_like_object(self):
          # issue 1690608.  email.utils.formataddr() should be rfc2047 aware.
          name = "H\u00e4ns W\u00fcrst"
          addr = 'person@dom.ain'
          utf8_base64 = "=?utf-8?b?SMOkbnMgV8O8cnN0?= <person@dom.ain>"
          foobar = "FOOBAR"
          class CharsetMock:
              def header_encode(self, string):
                  return foobar
          mock = CharsetMock()
          mock_expected = "%s <%s>" % (foobar, addr)
          self.assertEqual(utils.formataddr((name, addr), mock), mock_expected)
          self.assertEqual(utils.formataddr((name, addr), Charset('utf-8')),
              utf8_base64)
  
      def test_invalid_charset_like_object_raises_error(self):
          # issue 1690608.  email.utils.formataddr() should be rfc2047 aware.
          name = "H\u00e4ns W\u00fcrst"
          addr = 'person@dom.ain'
          # A object without a header_encode method:
          bad_charset = object()
          self.assertRaises(AttributeError, utils.formataddr, (name, addr),
              bad_charset)
  
      def test_unicode_address_raises_error(self):
          # issue 1690608.  email.utils.formataddr() should be rfc2047 aware.
          addr = 'pers\u00f6n@dom.in'
          self.assertRaises(UnicodeError, utils.formataddr, (None, addr))
          self.assertRaises(UnicodeError, utils.formataddr, ("Name", addr))
  
      def test_name_with_dot(self):
          x = 'John X. Doe <jxd@example.com>'
          y = '"John X. Doe" <jxd@example.com>'
          a, b = ('John X. Doe', 'jxd@example.com')
          self.assertEqual(utils.parseaddr(x), (a, b))
          self.assertEqual(utils.parseaddr(y), (a, b))
          # formataddr() quotes the name if there's a dot in it
          self.assertEqual(utils.formataddr((a, b)), y)
  
      def test_parseaddr_preserves_quoted_pairs_in_addresses(self):
          # issue 10005.  Note that in the third test the second pair of
          # backslashes is not actually a quoted pair because it is not inside a
          # comment or quoted string: the address being parsed has a quoted
          # string containing a quoted backslash, followed by 'example' and two
          # backslashes, followed by another quoted string containing a space and
          # the word 'example'.  parseaddr copies those two backslashes
          # literally.  Per rfc5322 this is not technically correct since a \ may
          # not appear in an address outside of a quoted string.  It is probably
          # a sensible Postel interpretation, though.
          eq = self.assertEqual
          eq(utils.parseaddr('""example" example"@example.com'),
            ('', '""example" example"@example.com'))
          eq(utils.parseaddr('"\\"example\\" example"@example.com'),
            ('', '"\\"example\\" example"@example.com'))
          eq(utils.parseaddr('"\\\\"example\\\\" example"@example.com'),
            ('', '"\\\\"example\\\\" example"@example.com'))
  
      def test_parseaddr_preserves_spaces_in_local_part(self):
          # issue 9286.  A normal RFC5322 local part should not contain any
          # folding white space, but legacy local parts can (they are a sequence
          # of atoms, not dotatoms).  On the other hand we strip whitespace from
          # before the @ and around dots, on the assumption that the whitespace
          # around the punctuation is a mistake in what would otherwise be
          # an RFC5322 local part.  Leading whitespace is, usual, stripped as well.
          self.assertEqual(('', "merwok wok@xample.com"),
              utils.parseaddr("merwok wok@xample.com"))
          self.assertEqual(('', "merwok  wok@xample.com"),
              utils.parseaddr("merwok  wok@xample.com"))
          self.assertEqual(('', "merwok  wok@xample.com"),
              utils.parseaddr(" merwok  wok  @xample.com"))
          self.assertEqual(('', 'merwok"wok"  wok@xample.com'),
              utils.parseaddr('merwok"wok"  wok@xample.com'))
          self.assertEqual(('', 'merwok.wok.wok@xample.com'),
              utils.parseaddr('merwok. wok .  wok@xample.com'))
  
      def test_formataddr_does_not_quote_parens_in_quoted_string(self):
          addr = ("'foo@example.com' (foo@example.com)",
                  'foo@example.com')
          addrstr = ('"\'foo@example.com\' '
                              '(foo@example.com)" <foo@example.com>')
          self.assertEqual(utils.parseaddr(addrstr), addr)
          self.assertEqual(utils.formataddr(addr), addrstr)
  
  
      def test_multiline_from_comment(self):
          x = """\
  Foo
  \tBar <foo@example.com>"""
          self.assertEqual(utils.parseaddr(x), ('Foo Bar', 'foo@example.com'))
  
      def test_quote_dump(self):
          self.assertEqual(
              utils.formataddr(('A Silly; Person', 'person@dom.ain')),
              r'"A Silly; Person" <person@dom.ain>')
  
      def test_charset_richcomparisons(self):
          eq = self.assertEqual
          ne = self.assertNotEqual
          cset1 = Charset()
          cset2 = Charset()
          eq(cset1, 'us-ascii')
          eq(cset1, 'US-ASCII')
          eq(cset1, 'Us-AsCiI')
          eq('us-ascii', cset1)
          eq('US-ASCII', cset1)
          eq('Us-AsCiI', cset1)
          ne(cset1, 'usascii')
          ne(cset1, 'USASCII')
          ne(cset1, 'UsAsCiI')
          ne('usascii', cset1)
          ne('USASCII', cset1)
          ne('UsAsCiI', cset1)
          eq(cset1, cset2)
          eq(cset2, cset1)
  
      def test_getaddresses(self):
          eq = self.assertEqual
          eq(utils.getaddresses(['aperson@dom.ain (Al Person)',
                                 'Bud Person <bperson@dom.ain>']),
             [('Al Person', 'aperson@dom.ain'),
              ('Bud Person', 'bperson@dom.ain')])
  
      def test_getaddresses_nasty(self):
          eq = self.assertEqual
          eq(utils.getaddresses(['foo: ;']), [('', '')])
          eq(utils.getaddresses(
             ['[]*-- =~$']),
             [('', ''), ('', ''), ('', '*--')])
          eq(utils.getaddresses(
             ['foo: ;', '"Jason R. Mastaler" <jason@dom.ain>']),
             [('', ''), ('Jason R. Mastaler', 'jason@dom.ain')])
  
      def test_getaddresses_embedded_comment(self):
          """Test proper handling of a nested comment"""
          eq = self.assertEqual
          addrs = utils.getaddresses(['User ((nested comment)) <foo@bar.com>'])
          eq(addrs[0][1], 'foo@bar.com')
  
      def test_utils_quote_unquote(self):
          eq = self.assertEqual
          msg = Message()
          msg.add_header('content-disposition', 'attachment',
                         filename='foo\\wacky"name')
          eq(msg.get_filename(), 'foo\\wacky"name')
  
      def test_get_body_encoding_with_bogus_charset(self):
          charset = Charset('not a charset')
          self.assertEqual(charset.get_body_encoding(), 'base64')
  
      def test_get_body_encoding_with_uppercase_charset(self):
          eq = self.assertEqual
          msg = Message()
          msg['Content-Type'] = 'text/plain; charset=UTF-8'
          eq(msg['content-type'], 'text/plain; charset=UTF-8')
          charsets = msg.get_charsets()
          eq(len(charsets), 1)
          eq(charsets[0], 'utf-8')
          charset = Charset(charsets[0])
          eq(charset.get_body_encoding(), 'base64')
          msg.set_payload(b'hello world', charset=charset)
          eq(msg.get_payload(), 'aGVsbG8gd29ybGQ=\n')
          eq(msg.get_payload(decode=True), b'hello world')
          eq(msg['content-transfer-encoding'], 'base64')
          # Try another one
          msg = Message()
          msg['Content-Type'] = 'text/plain; charset="US-ASCII"'
          charsets = msg.get_charsets()
          eq(len(charsets), 1)
          eq(charsets[0], 'us-ascii')
          charset = Charset(charsets[0])
          eq(charset.get_body_encoding(), encoders.encode_7or8bit)
          msg.set_payload('hello world', charset=charset)
          eq(msg.get_payload(), 'hello world')
          eq(msg['content-transfer-encoding'], '7bit')
  
      def test_charsets_case_insensitive(self):
          lc = Charset('us-ascii')
          uc = Charset('US-ASCII')
          self.assertEqual(lc.get_body_encoding(), uc.get_body_encoding())
  
      def test_partial_falls_inside_message_delivery_status(self):
          eq = self.ndiffAssertEqual
          # The Parser interface provides chunks of data to FeedParser in 8192
          # byte gulps.  SF bug #1076485 found one of those chunks inside
          # message/delivery-status header block, which triggered an
          # unreadline() of NeedMoreData.
          msg = self._msgobj('msg_43.txt')
          sfp = StringIO()
          iterators._structure(msg, sfp)
          eq(sfp.getvalue(), """\
  multipart/report
      text/plain
      message/delivery-status
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
          text/plain
      text/rfc822-headers
  """)
  
      def test_make_msgid_domain(self):
          self.assertEqual(
              email.utils.make_msgid(domain='testdomain-string')[-19:],
              '@testdomain-string>')
  
      def test_Generator_linend(self):
          # Issue 14645.
          with openfile('msg_26.txt', newline='\n') as f:
              msgtxt = f.read()
          msgtxt_nl = msgtxt.replace('\r\n', '\n')
          msg = email.message_from_string(msgtxt)
          s = StringIO()
          g = email.generator.Generator(s)
          g.flatten(msg)
          self.assertEqual(s.getvalue(), msgtxt_nl)
  
      def test_BytesGenerator_linend(self):
          # Issue 14645.
          with openfile('msg_26.txt', newline='\n') as f:
              msgtxt = f.read()
          msgtxt_nl = msgtxt.replace('\r\n', '\n')
          msg = email.message_from_string(msgtxt_nl)
          s = BytesIO()
          g = email.generator.BytesGenerator(s)
          g.flatten(msg, linesep='\r\n')
          self.assertEqual(s.getvalue().decode('ascii'), msgtxt)
  
      def test_BytesGenerator_linend_with_non_ascii(self):
          # Issue 14645.
          with openfile('msg_26.txt', 'rb') as f:
              msgtxt = f.read()
          msgtxt = msgtxt.replace(b'with attachment', b'fo\xf6')
          msgtxt_nl = msgtxt.replace(b'\r\n', b'\n')
          msg = email.message_from_bytes(msgtxt_nl)
          s = BytesIO()
          g = email.generator.BytesGenerator(s)
          g.flatten(msg, linesep='\r\n')
          self.assertEqual(s.getvalue(), msgtxt)
  
  
  # Test the iterator/generators
  class TestIterators(TestEmailBase):
      def test_body_line_iterator(self):
          eq = self.assertEqual
          neq = self.ndiffAssertEqual
          # First a simple non-multipart message
          msg = self._msgobj('msg_01.txt')
          it = iterators.body_line_iterator(msg)
          lines = list(it)
          eq(len(lines), 6)
          neq(EMPTYSTRING.join(lines), msg.get_payload())
          # Now a more complicated multipart
          msg = self._msgobj('msg_02.txt')
          it = iterators.body_line_iterator(msg)
          lines = list(it)
          eq(len(lines), 43)
          with openfile('msg_19.txt') as fp:
              neq(EMPTYSTRING.join(lines), fp.read())
  
      def test_typed_subpart_iterator(self):
          eq = self.assertEqual
          msg = self._msgobj('msg_04.txt')
          it = iterators.typed_subpart_iterator(msg, 'text')
          lines = []
          subparts = 0
          for subpart in it:
              subparts += 1
              lines.append(subpart.get_payload())
          eq(subparts, 2)
          eq(EMPTYSTRING.join(lines), """\
  a simple kind of mirror
  to reflect upon our own
  a simple kind of mirror
  to reflect upon our own
  """)
  
      def test_typed_subpart_iterator_default_type(self):
          eq = self.assertEqual
          msg = self._msgobj('msg_03.txt')
          it = iterators.typed_subpart_iterator(msg, 'text', 'plain')
          lines = []
          subparts = 0
          for subpart in it:
              subparts += 1
              lines.append(subpart.get_payload())
          eq(subparts, 1)
          eq(EMPTYSTRING.join(lines), """\
  
  Hi,
  
  Do you like this message?
  
  -Me
  """)
  
      def test_pushCR_LF(self):
          '''FeedParser BufferedSubFile.push() assumed it received complete
             line endings.  A CR ending one push() followed by a LF starting
             the next push() added an empty line.
          '''
          imt = [
              ("a\r \n",  2),
              ("b",       0),
              ("c\n",     1),
              ("",        0),
              ("d\r\n",   1),
              ("e\r",     0),
              ("\nf",     1),
              ("\r\n",    1),
            ]
          from email.feedparser import BufferedSubFile, NeedMoreData
          bsf = BufferedSubFile()
          om = []
          nt = 0
          for il, n in imt:
              bsf.push(il)
              nt += n
              n1 = 0
              while True:
                  ol = bsf.readline()
                  if ol == NeedMoreData:
                      break
                  om.append(ol)
                  n1 += 1
              self.assertTrue(n == n1)
          self.assertTrue(len(om) == nt)
          self.assertTrue(''.join([il for il, n in imt]) == ''.join(om))
  
  
  
  class TestParsers(TestEmailBase):
  
      def test_header_parser(self):
          eq = self.assertEqual
          # Parse only the headers of a complex multipart MIME document
          with openfile('msg_02.txt') as fp:
              msg = HeaderParser().parse(fp)
          eq(msg['from'], 'ppp-request@zzz.org')
          eq(msg['to'], 'ppp@zzz.org')
          eq(msg.get_content_type(), 'multipart/mixed')
          self.assertFalse(msg.is_multipart())
          self.assertTrue(isinstance(msg.get_payload(), str))
  
      def test_bytes_header_parser(self):
          eq = self.assertEqual
          # Parse only the headers of a complex multipart MIME document
          with openfile('msg_02.txt', 'rb') as fp:
              msg = email.parser.BytesHeaderParser().parse(fp)
          eq(msg['from'], 'ppp-request@zzz.org')
          eq(msg['to'], 'ppp@zzz.org')
          eq(msg.get_content_type(), 'multipart/mixed')
          self.assertFalse(msg.is_multipart())
          self.assertTrue(isinstance(msg.get_payload(), str))
          self.assertTrue(isinstance(msg.get_payload(decode=True), bytes))
  
      def test_whitespace_continuation(self):
          eq = self.assertEqual
          # This message contains a line after the Subject: header that has only
          # whitespace, but it is not empty!
          msg = email.message_from_string("""\
  From: aperson@dom.ain
  To: bperson@dom.ain
  Subject: the next line has a space on it
  \x20
  Date: Mon, 8 Apr 2002 15:09:19 -0400
  Message-ID: spam
  
  Here's the message body
  """)
          eq(msg['subject'], 'the next line has a space on it\n ')
          eq(msg['message-id'], 'spam')
          eq(msg.get_payload(), "Here's the message body\n")
  
      def test_whitespace_continuation_last_header(self):
          eq = self.assertEqual
          # Like the previous test, but the subject line is the last
          # header.
          msg = email.message_from_string("""\
  From: aperson@dom.ain
  To: bperson@dom.ain
  Date: Mon, 8 Apr 2002 15:09:19 -0400
  Message-ID: spam
  Subject: the next line has a space on it
  \x20
  
  Here's the message body
  """)
          eq(msg['subject'], 'the next line has a space on it\n ')
          eq(msg['message-id'], 'spam')
          eq(msg.get_payload(), "Here's the message body\n")
  
      def test_crlf_separation(self):
          eq = self.assertEqual
          with openfile('msg_26.txt', newline='\n') as fp:
              msg = Parser().parse(fp)
          eq(len(msg.get_payload()), 2)
          part1 = msg.get_payload(0)
          eq(part1.get_content_type(), 'text/plain')
          eq(part1.get_payload(), 'Simple email with attachment.\r\n\r\n')
          part2 = msg.get_payload(1)
          eq(part2.get_content_type(), 'application/riscos')
  
      def test_crlf_flatten(self):
          # Using newline='\n' preserves the crlfs in this input file.
          with openfile('msg_26.txt', newline='\n') as fp:
              text = fp.read()
          msg = email.message_from_string(text)
          s = StringIO()
          g = Generator(s)
          g.flatten(msg, linesep='\r\n')
          self.assertEqual(s.getvalue(), text)
  
      maxDiff = None
  
      def test_multipart_digest_with_extra_mime_headers(self):
          eq = self.assertEqual
          neq = self.ndiffAssertEqual
          with openfile('msg_28.txt') as fp:
              msg = email.message_from_file(fp)
          # Structure is:
          # multipart/digest
          #   message/rfc822
          #     text/plain
          #   message/rfc822
          #     text/plain
          eq(msg.is_multipart(), 1)
          eq(len(msg.get_payload()), 2)
          part1 = msg.get_payload(0)
          eq(part1.get_content_type(), 'message/rfc822')
          eq(part1.is_multipart(), 1)
          eq(len(part1.get_payload()), 1)
          part1a = part1.get_payload(0)
          eq(part1a.is_multipart(), 0)
          eq(part1a.get_content_type(), 'text/plain')
          neq(part1a.get_payload(), 'message 1\n')
          # next message/rfc822
          part2 = msg.get_payload(1)
          eq(part2.get_content_type(), 'message/rfc822')
          eq(part2.is_multipart(), 1)
          eq(len(part2.get_payload()), 1)
          part2a = part2.get_payload(0)
          eq(part2a.is_multipart(), 0)
          eq(part2a.get_content_type(), 'text/plain')
          neq(part2a.get_payload(), 'message 2\n')
  
      def test_three_lines(self):
          # A bug report by Andrew McNamara
          lines = ['From: Andrew Person <aperson@dom.ain',
                   'Subject: Test',
                   'Date: Tue, 20 Aug 2002 16:43:45 +1000']
          msg = email.message_from_string(NL.join(lines))
          self.assertEqual(msg['date'], 'Tue, 20 Aug 2002 16:43:45 +1000')
  
      def test_strip_line_feed_and_carriage_return_in_headers(self):
          eq = self.assertEqual
          # For [ 1002475 ] email message parser doesn't handle \r\n correctly
          value1 = 'text'
          value2 = 'more text'
          m = 'Header: %s\r\nNext-Header: %s\r\n\r\nBody\r\n\r\n' % (
              value1, value2)
          msg = email.message_from_string(m)
          eq(msg.get('Header'), value1)
          eq(msg.get('Next-Header'), value2)
  
      def test_rfc2822_header_syntax(self):
          eq = self.assertEqual
          m = '>From: foo\nFrom: bar\n!"#QUX;~: zoo\n\nbody'
          msg = email.message_from_string(m)
          eq(len(msg), 3)
          eq(sorted(field for field in msg), ['!"#QUX;~', '>From', 'From'])
          eq(msg.get_payload(), 'body')
  
      def test_rfc2822_space_not_allowed_in_header(self):
          eq = self.assertEqual
          m = '>From foo@example.com 11:25:53\nFrom: bar\n!"#QUX;~: zoo\n\nbody'
          msg = email.message_from_string(m)
          eq(len(msg.keys()), 0)
  
      def test_rfc2822_one_character_header(self):
          eq = self.assertEqual
          m = 'A: first header\nB: second header\nCC: third header\n\nbody'
          msg = email.message_from_string(m)
          headers = msg.keys()
          headers.sort()
          eq(headers, ['A', 'B', 'CC'])
          eq(msg.get_payload(), 'body')
  
      def test_CRLFLF_at_end_of_part(self):
          # issue 5610: feedparser should not eat two chars from body part ending
          # with "\r\n\n".
          m = (
              "From: foo@bar.com\n"
              "To: baz\n"
              "Mime-Version: 1.0\n"
              "Content-Type: multipart/mixed; boundary=BOUNDARY\n"
              "\n"
              "--BOUNDARY\n"
              "Content-Type: text/plain\n"
              "\n"
              "body ending with CRLF newline\r\n"
              "\n"
              "--BOUNDARY--\n"
            )
          msg = email.message_from_string(m)
          self.assertTrue(msg.get_payload(0).get_payload().endswith('\r\n'))
  
  
  class Test8BitBytesHandling(unittest.TestCase):
      # In Python3 all input is string, but that doesn't work if the actual input
      # uses an 8bit transfer encoding.  To hack around that, in email 5.1 we
      # decode byte streams using the surrogateescape error handler, and
      # reconvert to binary at appropriate places if we detect surrogates.  This
      # doesn't allow us to transform headers with 8bit bytes (they get munged),
      # but it does allow us to parse and preserve them, and to decode body
      # parts that use an 8bit CTE.
  
      bodytest_msg = textwrap.dedent("""\
          From: foo@bar.com
          To: baz
          Mime-Version: 1.0
          Content-Type: text/plain; charset={charset}
          Content-Transfer-Encoding: {cte}
  
          {bodyline}
          """)
  
      def test_known_8bit_CTE(self):
          m = self.bodytest_msg.format(charset='utf-8',
                                       cte='8bit',
                                       bodyline='pöstal').encode('utf-8')
          msg = email.message_from_bytes(m)
          self.assertEqual(msg.get_payload(), "pöstal\n")
          self.assertEqual(msg.get_payload(decode=True),
                           "pöstal\n".encode('utf-8'))
  
      def test_unknown_8bit_CTE(self):
          m = self.bodytest_msg.format(charset='notavalidcharset',
                                       cte='8bit',
                                       bodyline='pöstal').encode('utf-8')
          msg = email.message_from_bytes(m)
          self.assertEqual(msg.get_payload(), "p\uFFFD\uFFFDstal\n")
          self.assertEqual(msg.get_payload(decode=True),
                           "pöstal\n".encode('utf-8'))
  
      def test_8bit_in_quopri_body(self):
          # This is non-RFC compliant data...without 'decode' the library code
          # decodes the body using the charset from the headers, and because the
          # source byte really is utf-8 this works.  This is likely to fail
          # against real dirty data (ie: produce mojibake), but the data is
          # invalid anyway so it is as good a guess as any.  But this means that
          # this test just confirms the current behavior; that behavior is not
          # necessarily the best possible behavior.  With 'decode' it is
          # returning the raw bytes, so that test should be of correct behavior,
          # or at least produce the same result that email4 did.
          m = self.bodytest_msg.format(charset='utf-8',
                                       cte='quoted-printable',
                                       bodyline='p=C3=B6stál').encode('utf-8')
          msg = email.message_from_bytes(m)
          self.assertEqual(msg.get_payload(), 'p=C3=B6stál\n')
          self.assertEqual(msg.get_payload(decode=True),
                           'pöstál\n'.encode('utf-8'))
  
      def test_invalid_8bit_in_non_8bit_cte_uses_replace(self):
          # This is similar to the previous test, but proves that if the 8bit
          # byte is undecodeable in the specified charset, it gets replaced
          # by the unicode 'unknown' character.  Again, this may or may not
          # be the ideal behavior.  Note that if decode=False none of the
          # decoders will get involved, so this is the only test we need
          # for this behavior.
          m = self.bodytest_msg.format(charset='ascii',
                                       cte='quoted-printable',
                                       bodyline='p=C3=B6stál').encode('utf-8')
          msg = email.message_from_bytes(m)
          self.assertEqual(msg.get_payload(), 'p=C3=B6st\uFFFD\uFFFDl\n')
          self.assertEqual(msg.get_payload(decode=True),
                          'pöstál\n'.encode('utf-8'))
  
      # test_defect_handling:test_invalid_chars_in_base64_payload
      def test_8bit_in_base64_body(self):
          # If we get 8bit bytes in a base64 body, we can just ignore them
          # as being outside the base64 alphabet and decode anyway.  But
          # we register a defect.
          m = self.bodytest_msg.format(charset='utf-8',
                                       cte='base64',
                                       bodyline='cMO2c3RhbAá=').encode('utf-8')
          msg = email.message_from_bytes(m)
          self.assertEqual(msg.get_payload(decode=True),
                           'pöstal'.encode('utf-8'))
          self.assertIsInstance(msg.defects[0],
                                errors.InvalidBase64CharactersDefect)
  
      def test_8bit_in_uuencode_body(self):
          # Sticking an 8bit byte in a uuencode block makes it undecodable by
          # normal means, so the block is returned undecoded, but as bytes.
          m = self.bodytest_msg.format(charset='utf-8',
                                       cte='uuencode',
                                       bodyline='<,.V<W1A; á ').encode('utf-8')
          msg = email.message_from_bytes(m)
          self.assertEqual(msg.get_payload(decode=True),
                           '<,.V<W1A; á \n'.encode('utf-8'))
  
  
      headertest_headers = (
          ('From: foo@bar.com', ('From', 'foo@bar.com')),
          ('To: báz', ('To', '=?unknown-8bit?q?b=C3=A1z?=')),
          ('Subject: Maintenant je vous présente mon collègue, le pouf célèbre\n'
              '\tJean de Baddie',
              ('Subject', '=?unknown-8bit?q?Maintenant_je_vous_pr=C3=A9sente_mon_'
                  'coll=C3=A8gue=2C_le_pouf_c=C3=A9l=C3=A8bre?=\n'
                  ' =?unknown-8bit?q?_Jean_de_Baddie?=')),
          ('From: göst', ('From', '=?unknown-8bit?b?Z8O2c3Q=?=')),
          )
      headertest_msg = ('\n'.join([src for (src, _) in headertest_headers]) +
          '\nYes, they are flying.\n').encode('utf-8')
  
      def test_get_8bit_header(self):
          msg = email.message_from_bytes(self.headertest_msg)
          self.assertEqual(str(msg.get('to')), 'b\uFFFD\uFFFDz')
          self.assertEqual(str(msg['to']), 'b\uFFFD\uFFFDz')
  
      def test_print_8bit_headers(self):
          msg = email.message_from_bytes(self.headertest_msg)
          self.assertEqual(str(msg),
                           textwrap.dedent("""\
                              From: {}
                              To: {}
                              Subject: {}
                              From: {}
  
                              Yes, they are flying.
                              """).format(*[expected[1] for (_, expected) in
                                          self.headertest_headers]))
  
      def test_values_with_8bit_headers(self):
          msg = email.message_from_bytes(self.headertest_msg)
          self.assertListEqual([str(x) for x in msg.values()],
                                ['foo@bar.com',
                                 'b\uFFFD\uFFFDz',
                                 'Maintenant je vous pr\uFFFD\uFFFDsente mon '
                                     'coll\uFFFD\uFFFDgue, le pouf '
                                     'c\uFFFD\uFFFDl\uFFFD\uFFFDbre\n'
                                     '\tJean de Baddie',
                                 "g\uFFFD\uFFFDst"])
  
      def test_items_with_8bit_headers(self):
          msg = email.message_from_bytes(self.headertest_msg)
          self.assertListEqual([(str(x), str(y)) for (x, y) in msg.items()],
                                [('From', 'foo@bar.com'),
                                 ('To', 'b\uFFFD\uFFFDz'),
                                 ('Subject', 'Maintenant je vous '
                                    'pr\uFFFD\uFFFDsente '
                                    'mon coll\uFFFD\uFFFDgue, le pouf '
                                    'c\uFFFD\uFFFDl\uFFFD\uFFFDbre\n'
                                    '\tJean de Baddie'),
                                 ('From', 'g\uFFFD\uFFFDst')])
  
      def test_get_all_with_8bit_headers(self):
          msg = email.message_from_bytes(self.headertest_msg)
          self.assertListEqual([str(x) for x in msg.get_all('from')],
                                ['foo@bar.com',
                                 'g\uFFFD\uFFFDst'])
  
      def test_get_content_type_with_8bit(self):
          msg = email.message_from_bytes(textwrap.dedent("""\
              Content-Type: text/pl\xA7in; charset=utf-8
              """).encode('latin-1'))
          self.assertEqual(msg.get_content_type(), "text/pl\uFFFDin")
          self.assertEqual(msg.get_content_maintype(), "text")
          self.assertEqual(msg.get_content_subtype(), "pl\uFFFDin")
  
      # test_headerregistry.TestContentTypeHeader.non_ascii_in_params
      def test_get_params_with_8bit(self):
          msg = email.message_from_bytes(
              'X-Header: foo=\xa7ne; b\xa7r=two; baz=three\n'.encode('latin-1'))
          self.assertEqual(msg.get_params(header='x-header'),
             [('foo', '\uFFFDne'), ('b\uFFFDr', 'two'), ('baz', 'three')])
          self.assertEqual(msg.get_param('Foo', header='x-header'), '\uFFFdne')
          # XXX: someday you might be able to get 'b\xa7r', for now you can't.
          self.assertEqual(msg.get_param('b\xa7r', header='x-header'), None)
  
      # test_headerregistry.TestContentTypeHeader.non_ascii_in_rfc2231_value
      def test_get_rfc2231_params_with_8bit(self):
          msg = email.message_from_bytes(textwrap.dedent("""\
              Content-Type: text/plain; charset=us-ascii;
               title*=us-ascii'en'This%20is%20not%20f\xa7n"""
               ).encode('latin-1'))
          self.assertEqual(msg.get_param('title'),
              ('us-ascii', 'en', 'This is not f\uFFFDn'))
  
      def test_set_rfc2231_params_with_8bit(self):
          msg = email.message_from_bytes(textwrap.dedent("""\
              Content-Type: text/plain; charset=us-ascii;
               title*=us-ascii'en'This%20is%20not%20f\xa7n"""
               ).encode('latin-1'))
          msg.set_param('title', 'test')
          self.assertEqual(msg.get_param('title'), 'test')
  
      def test_del_rfc2231_params_with_8bit(self):
          msg = email.message_from_bytes(textwrap.dedent("""\
              Content-Type: text/plain; charset=us-ascii;
               title*=us-ascii'en'This%20is%20not%20f\xa7n"""
               ).encode('latin-1'))
          msg.del_param('title')
          self.assertEqual(msg.get_param('title'), None)
          self.assertEqual(msg.get_content_maintype(), 'text')
  
      def test_get_payload_with_8bit_cte_header(self):
          msg = email.message_from_bytes(textwrap.dedent("""\
              Content-Transfer-Encoding: b\xa7se64
              Content-Type: text/plain; charset=latin-1
  
              payload
              """).encode('latin-1'))
          self.assertEqual(msg.get_payload(), 'payload\n')
          self.assertEqual(msg.get_payload(decode=True), b'payload\n')
  
      non_latin_bin_msg = textwrap.dedent("""\
          From: foo@bar.com
          To: báz
          Subject: Maintenant je vous présente mon collègue, le pouf célèbre
          \tJean de Baddie
          Mime-Version: 1.0
          Content-Type: text/plain; charset="utf-8"
          Content-Transfer-Encoding: 8bit
  
          Да, они летят.
          """).encode('utf-8')
  
      def test_bytes_generator(self):
          msg = email.message_from_bytes(self.non_latin_bin_msg)
          out = BytesIO()
          email.generator.BytesGenerator(out).flatten(msg)
          self.assertEqual(out.getvalue(), self.non_latin_bin_msg)
  
      def test_bytes_generator_handles_None_body(self):
          #Issue 11019
          msg = email.message.Message()
          out = BytesIO()
          email.generator.BytesGenerator(out).flatten(msg)
          self.assertEqual(out.getvalue(), b"\n")
  
      non_latin_bin_msg_as7bit_wrapped = textwrap.dedent("""\
          From: foo@bar.com
          To: =?unknown-8bit?q?b=C3=A1z?=
          Subject: =?unknown-8bit?q?Maintenant_je_vous_pr=C3=A9sente_mon_coll=C3=A8gue?=
           =?unknown-8bit?q?=2C_le_pouf_c=C3=A9l=C3=A8bre?=
           =?unknown-8bit?q?_Jean_de_Baddie?=
          Mime-Version: 1.0
          Content-Type: text/plain; charset="utf-8"
          Content-Transfer-Encoding: base64
  
          0JTQsCwg0L7QvdC4INC70LXRgtGP0YIuCg==
          """)
  
      def test_generator_handles_8bit(self):
          msg = email.message_from_bytes(self.non_latin_bin_msg)
          out = StringIO()
          email.generator.Generator(out).flatten(msg)
          self.assertEqual(out.getvalue(), self.non_latin_bin_msg_as7bit_wrapped)
  
      def test_bytes_generator_with_unix_from(self):
          # The unixfrom contains a current date, so we can't check it
          # literally.  Just make sure the first word is 'From' and the
          # rest of the message matches the input.
          msg = email.message_from_bytes(self.non_latin_bin_msg)
          out = BytesIO()
          email.generator.BytesGenerator(out).flatten(msg, unixfrom=True)
          lines = out.getvalue().split(b'\n')
          self.assertEqual(lines[0].split()[0], b'From')
          self.assertEqual(b'\n'.join(lines[1:]), self.non_latin_bin_msg)
  
      non_latin_bin_msg_as7bit = non_latin_bin_msg_as7bit_wrapped.split('\n')
      non_latin_bin_msg_as7bit[2:4] = [
          'Subject: =?unknown-8bit?q?Maintenant_je_vous_pr=C3=A9sente_mon_'
           'coll=C3=A8gue=2C_le_pouf_c=C3=A9l=C3=A8bre?=']
      non_latin_bin_msg_as7bit = '\n'.join(non_latin_bin_msg_as7bit)
  
      def test_message_from_binary_file(self):
          fn = 'test.msg'
          self.addCleanup(unlink, fn)
          with open(fn, 'wb') as testfile:
              testfile.write(self.non_latin_bin_msg)
          with open(fn, 'rb') as testfile:
              m = email.parser.BytesParser().parse(testfile)
          self.assertEqual(str(m), self.non_latin_bin_msg_as7bit)
  
      latin_bin_msg = textwrap.dedent("""\
          From: foo@bar.com
          To: Dinsdale
          Subject: Nudge nudge, wink, wink
          Mime-Version: 1.0
          Content-Type: text/plain; charset="latin-1"
          Content-Transfer-Encoding: 8bit
  
          oh là là, know what I mean, know what I mean?
          """).encode('latin-1')
  
      latin_bin_msg_as7bit = textwrap.dedent("""\
          From: foo@bar.com
          To: Dinsdale
          Subject: Nudge nudge, wink, wink
          Mime-Version: 1.0
          Content-Type: text/plain; charset="iso-8859-1"
          Content-Transfer-Encoding: quoted-printable
  
          oh l=E0 l=E0, know what I mean, know what I mean?
          """)
  
      def test_string_generator_reencodes_to_quopri_when_appropriate(self):
          m = email.message_from_bytes(self.latin_bin_msg)
          self.assertEqual(str(m), self.latin_bin_msg_as7bit)
  
      def test_decoded_generator_emits_unicode_body(self):
          m = email.message_from_bytes(self.latin_bin_msg)
          out = StringIO()
          email.generator.DecodedGenerator(out).flatten(m)
          #DecodedHeader output contains an extra blank line compared
          #to the input message.  RDM: not sure if this is a bug or not,
          #but it is not specific to the 8bit->7bit conversion.
          self.assertEqual(out.getvalue(),
              self.latin_bin_msg.decode('latin-1')+'\n')
  
      def test_bytes_feedparser(self):
          bfp = email.feedparser.BytesFeedParser()
          for i in range(0, len(self.latin_bin_msg), 10):
              bfp.feed(self.latin_bin_msg[i:i+10])
          m = bfp.close()
          self.assertEqual(str(m), self.latin_bin_msg_as7bit)
  
      def test_crlf_flatten(self):
          with openfile('msg_26.txt', 'rb') as fp:
              text = fp.read()
          msg = email.message_from_bytes(text)
          s = BytesIO()
          g = email.generator.BytesGenerator(s)
          g.flatten(msg, linesep='\r\n')
          self.assertEqual(s.getvalue(), text)
  
      def test_8bit_multipart(self):
          # Issue 11605
          source = textwrap.dedent("""\
              Date: Fri, 18 Mar 2011 17:15:43 +0100
              To: foo@example.com
              From: foodwatch-Newsletter <bar@example.com>
              Subject: Aktuelles zu Japan, Klonfleisch und Smiley-System
              Message-ID: <76a486bee62b0d200f33dc2ca08220ad@localhost.localdomain>
              MIME-Version: 1.0
              Content-Type: multipart/alternative;
                      boundary="b1_76a486bee62b0d200f33dc2ca08220ad"
  
              --b1_76a486bee62b0d200f33dc2ca08220ad
              Content-Type: text/plain; charset="utf-8"
              Content-Transfer-Encoding: 8bit
  
              Guten Tag, ,
  
              mit großer Betroffenheit verfolgen auch wir im foodwatch-Team die
              Nachrichten aus Japan.
  
  
              --b1_76a486bee62b0d200f33dc2ca08220ad
              Content-Type: text/html; charset="utf-8"
              Content-Transfer-Encoding: 8bit
  
              <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
                  "http://www.w3.org/TR/html4/loose.dtd">
              <html lang="de">
              <head>
                      <title>foodwatch - Newsletter</title>
              </head>
              <body>
                <p>mit gro&szlig;er Betroffenheit verfolgen auch wir im foodwatch-Team
                   die Nachrichten aus Japan.</p>
              </body>
              </html>
              --b1_76a486bee62b0d200f33dc2ca08220ad--
  
              """).encode('utf-8')
          msg = email.message_from_bytes(source)
          s = BytesIO()
          g = email.generator.BytesGenerator(s)
          g.flatten(msg)
          self.assertEqual(s.getvalue(), source)
  
      def test_bytes_generator_b_encoding_linesep(self):
          # Issue 14062: b encoding was tacking on an extra \n.
          m = Message()
          # This has enough non-ascii that it should always end up b encoded.
          m['Subject'] = Header('žluťoučký kůň')
          s = BytesIO()
          g = email.generator.BytesGenerator(s)
          g.flatten(m, linesep='\r\n')
          self.assertEqual(
              s.getvalue(),
              b'Subject: =?utf-8?b?xb5sdcWlb3XEjWvDvSBrxa/FiA==?=\r\n\r\n')
  
      def test_generator_b_encoding_linesep(self):
          # Since this broke in ByteGenerator, test Generator for completeness.
          m = Message()
          # This has enough non-ascii that it should always end up b encoded.
          m['Subject'] = Header('žluťoučký kůň')
          s = StringIO()
          g = email.generator.Generator(s)
          g.flatten(m, linesep='\r\n')
          self.assertEqual(
              s.getvalue(),
              'Subject: =?utf-8?b?xb5sdcWlb3XEjWvDvSBrxa/FiA==?=\r\n\r\n')
  
      maxDiff = None
  
  
  class BaseTestBytesGeneratorIdempotent:
  
      maxDiff = None
  
      def _msgobj(self, filename):
          with openfile(filename, 'rb') as fp:
              data = fp.read()
          data = self.normalize_linesep_regex.sub(self.blinesep, data)
          msg = email.message_from_bytes(data)
          return msg, data
  
      def _idempotent(self, msg, data, unixfrom=False):
          b = BytesIO()
          g = email.generator.BytesGenerator(b, maxheaderlen=0)
          g.flatten(msg, unixfrom=unixfrom, linesep=self.linesep)
          self.assertEqual(data, b.getvalue())
  
  
  class TestBytesGeneratorIdempotentNL(BaseTestBytesGeneratorIdempotent,
                                      TestIdempotent):
      linesep = '\n'
      blinesep = b'\n'
      normalize_linesep_regex = re.compile(br'\r\n')
  
  
  class TestBytesGeneratorIdempotentCRLF(BaseTestBytesGeneratorIdempotent,
                                         TestIdempotent):
      linesep = '\r\n'
      blinesep = b'\r\n'
      normalize_linesep_regex = re.compile(br'(?<!\r)\n')
  
  
  class TestBase64(unittest.TestCase):
      def test_len(self):
          eq = self.assertEqual
          eq(base64mime.header_length('hello'),
             len(base64mime.body_encode(b'hello', eol='')))
          for size in range(15):
              if   size == 0 : bsize = 0
              elif size <= 3 : bsize = 4
              elif size <= 6 : bsize = 8
              elif size <= 9 : bsize = 12
              elif size <= 12: bsize = 16
              else           : bsize = 20
              eq(base64mime.header_length('x' * size), bsize)
  
      def test_decode(self):
          eq = self.assertEqual
          eq(base64mime.decode(''), b'')
          eq(base64mime.decode('aGVsbG8='), b'hello')
  
      def test_encode(self):
          eq = self.assertEqual
          eq(base64mime.body_encode(b''), b'')
          eq(base64mime.body_encode(b'hello'), 'aGVsbG8=\n')
          # Test the binary flag
          eq(base64mime.body_encode(b'hello\n'), 'aGVsbG8K\n')
          # Test the maxlinelen arg
          eq(base64mime.body_encode(b'xxxx ' * 20, maxlinelen=40), """\
  eHh4eCB4eHh4IHh4eHggeHh4eCB4eHh4IHh4eHgg
  eHh4eCB4eHh4IHh4eHggeHh4eCB4eHh4IHh4eHgg
  eHh4eCB4eHh4IHh4eHggeHh4eCB4eHh4IHh4eHgg
  eHh4eCB4eHh4IA==
  """)
          # Test the eol argument
          eq(base64mime.body_encode(b'xxxx ' * 20, maxlinelen=40, eol='\r\n'),
             """\
  eHh4eCB4eHh4IHh4eHggeHh4eCB4eHh4IHh4eHgg\r
  eHh4eCB4eHh4IHh4eHggeHh4eCB4eHh4IHh4eHgg\r
  eHh4eCB4eHh4IHh4eHggeHh4eCB4eHh4IHh4eHgg\r
  eHh4eCB4eHh4IA==\r
  """)
  
      def test_header_encode(self):
          eq = self.assertEqual
          he = base64mime.header_encode
          eq(he('hello'), '=?iso-8859-1?b?aGVsbG8=?=')
          eq(he('hello\r\nworld'), '=?iso-8859-1?b?aGVsbG8NCndvcmxk?=')
          eq(he('hello\nworld'), '=?iso-8859-1?b?aGVsbG8Kd29ybGQ=?=')
          # Test the charset option
          eq(he('hello', charset='iso-8859-2'), '=?iso-8859-2?b?aGVsbG8=?=')
          eq(he('hello\nworld'), '=?iso-8859-1?b?aGVsbG8Kd29ybGQ=?=')
  
  
  
  class TestQuopri(unittest.TestCase):
      def setUp(self):
          # Set of characters (as byte integers) that don't need to be encoded
          # in headers.
          self.hlit = list(chain(
              range(ord('a'), ord('z') + 1),
              range(ord('A'), ord('Z') + 1),
              range(ord('0'), ord('9') + 1),
              (c for c in b'!*+-/')))
          # Set of characters (as byte integers) that do need to be encoded in
          # headers.
          self.hnon = [c for c in range(256) if c not in self.hlit]
          assert len(self.hlit) + len(self.hnon) == 256
          # Set of characters (as byte integers) that don't need to be encoded
          # in bodies.
          self.blit = list(range(ord(' '), ord('~') + 1))
          self.blit.append(ord('\t'))
          self.blit.remove(ord('='))
          # Set of characters (as byte integers) that do need to be encoded in
          # bodies.
          self.bnon = [c for c in range(256) if c not in self.blit]
          assert len(self.blit) + len(self.bnon) == 256
  
      def test_quopri_header_check(self):
          for c in self.hlit:
              self.assertFalse(quoprimime.header_check(c),
                          'Should not be header quopri encoded: %s' % chr(c))
          for c in self.hnon:
              self.assertTrue(quoprimime.header_check(c),
                              'Should be header quopri encoded: %s' % chr(c))
  
      def test_quopri_body_check(self):
          for c in self.blit:
              self.assertFalse(quoprimime.body_check(c),
                          'Should not be body quopri encoded: %s' % chr(c))
          for c in self.bnon:
              self.assertTrue(quoprimime.body_check(c),
                              'Should be body quopri encoded: %s' % chr(c))
  
      def test_header_quopri_len(self):
          eq = self.assertEqual
          eq(quoprimime.header_length(b'hello'), 5)
          # RFC 2047 chrome is not included in header_length().
          eq(len(quoprimime.header_encode(b'hello', charset='xxx')),
             quoprimime.header_length(b'hello') +
             # =?xxx?q?...?= means 10 extra characters
             10)
          eq(quoprimime.header_length(b'h@e@l@l@o@'), 20)
          # RFC 2047 chrome is not included in header_length().
          eq(len(quoprimime.header_encode(b'h@e@l@l@o@', charset='xxx')),
             quoprimime.header_length(b'h@e@l@l@o@') +
             # =?xxx?q?...?= means 10 extra characters
             10)
          for c in self.hlit:
              eq(quoprimime.header_length(bytes([c])), 1,
                 'expected length 1 for %r' % chr(c))
          for c in self.hnon:
              # Space is special; it's encoded to _
              if c == ord(' '):
                  continue
              eq(quoprimime.header_length(bytes([c])), 3,
                 'expected length 3 for %r' % chr(c))
          eq(quoprimime.header_length(b' '), 1)
  
      def test_body_quopri_len(self):
          eq = self.assertEqual
          for c in self.blit:
              eq(quoprimime.body_length(bytes([c])), 1)
          for c in self.bnon:
              eq(quoprimime.body_length(bytes([c])), 3)
  
      def test_quote_unquote_idempotent(self):
          for x in range(256):
              c = chr(x)
              self.assertEqual(quoprimime.unquote(quoprimime.quote(c)), c)
  
      def _test_header_encode(self, header, expected_encoded_header, charset=None):
          if charset is None:
              encoded_header = quoprimime.header_encode(header)
          else:
              encoded_header = quoprimime.header_encode(header, charset)
          self.assertEqual(encoded_header, expected_encoded_header)
  
      def test_header_encode_null(self):
          self._test_header_encode(b'', '')
  
      def test_header_encode_one_word(self):
          self._test_header_encode(b'hello', '=?iso-8859-1?q?hello?=')
  
      def test_header_encode_two_lines(self):
          self._test_header_encode(b'hello\nworld',
                                  '=?iso-8859-1?q?hello=0Aworld?=')
  
      def test_header_encode_non_ascii(self):
          self._test_header_encode(b'hello\xc7there',
                                  '=?iso-8859-1?q?hello=C7there?=')
  
      def test_header_encode_alt_charset(self):
          self._test_header_encode(b'hello', '=?iso-8859-2?q?hello?=',
                  charset='iso-8859-2')
  
      def _test_header_decode(self, encoded_header, expected_decoded_header):
          decoded_header = quoprimime.header_decode(encoded_header)
          self.assertEqual(decoded_header, expected_decoded_header)
  
      def test_header_decode_null(self):
          self._test_header_decode('', '')
  
      def test_header_decode_one_word(self):
          self._test_header_decode('hello', 'hello')
  
      def test_header_decode_two_lines(self):
          self._test_header_decode('hello=0Aworld', 'hello\nworld')
  
      def test_header_decode_non_ascii(self):
          self._test_header_decode('hello=C7there', 'hello\xc7there')
  
      def test_header_decode_re_bug_18380(self):
          # Issue 18380: Call re.sub with a positional argument for flags in the wrong position
          self.assertEqual(quoprimime.header_decode('=30' * 257), '0' * 257)
  
      def _test_decode(self, encoded, expected_decoded, eol=None):
          if eol is None:
              decoded = quoprimime.decode(encoded)
          else:
              decoded = quoprimime.decode(encoded, eol=eol)
          self.assertEqual(decoded, expected_decoded)
  
      def test_decode_null_word(self):
          self._test_decode('', '')
  
      def test_decode_null_line_null_word(self):
          self._test_decode('\r\n', '\n')
  
      def test_decode_one_word(self):
          self._test_decode('hello', 'hello')
  
      def test_decode_one_word_eol(self):
          self._test_decode('hello', 'hello', eol='X')
  
      def test_decode_one_line(self):
          self._test_decode('hello\r\n', 'hello\n')
  
      def test_decode_one_line_lf(self):
          self._test_decode('hello\n', 'hello\n')
  
      def test_decode_one_line_cr(self):
          self._test_decode('hello\r', 'hello\n')
  
      def test_decode_one_line_nl(self):
          self._test_decode('hello\n', 'helloX', eol='X')
  
      def test_decode_one_line_crnl(self):
          self._test_decode('hello\r\n', 'helloX', eol='X')
  
      def test_decode_one_line_one_word(self):
          self._test_decode('hello\r\nworld', 'hello\nworld')
  
      def test_decode_one_line_one_word_eol(self):
          self._test_decode('hello\r\nworld', 'helloXworld', eol='X')
  
      def test_decode_two_lines(self):
          self._test_decode('hello\r\nworld\r\n', 'hello\nworld\n')
  
      def test_decode_two_lines_eol(self):
          self._test_decode('hello\r\nworld\r\n', 'helloXworldX', eol='X')
  
      def test_decode_one_long_line(self):
          self._test_decode('Spam' * 250, 'Spam' * 250)
  
      def test_decode_one_space(self):
          self._test_decode(' ', '')
  
      def test_decode_multiple_spaces(self):
          self._test_decode(' ' * 5, '')
  
      def test_decode_one_line_trailing_spaces(self):
          self._test_decode('hello    \r\n', 'hello\n')
  
      def test_decode_two_lines_trailing_spaces(self):
          self._test_decode('hello    \r\nworld   \r\n', 'hello\nworld\n')
  
      def test_decode_quoted_word(self):
          self._test_decode('=22quoted=20words=22', '"quoted words"')
  
      def test_decode_uppercase_quoting(self):
          self._test_decode('ab=CD=EF', 'ab\xcd\xef')
  
      def test_decode_lowercase_quoting(self):
          self._test_decode('ab=cd=ef', 'ab\xcd\xef')
  
      def test_decode_soft_line_break(self):
          self._test_decode('soft line=\r\nbreak', 'soft linebreak')
  
      def test_decode_false_quoting(self):
          self._test_decode('A=1,B=A ==> A+B==2', 'A=1,B=A ==> A+B==2')
  
      def _test_encode(self, body, expected_encoded_body, maxlinelen=None, eol=None):
          kwargs = {}
          if maxlinelen is None:
              # Use body_encode's default.
              maxlinelen = 76
          else:
              kwargs['maxlinelen'] = maxlinelen
          if eol is None:
              # Use body_encode's default.
              eol = '\n'
          else:
              kwargs['eol'] = eol
          encoded_body = quoprimime.body_encode(body, **kwargs)
          self.assertEqual(encoded_body, expected_encoded_body)
          if eol == '\n' or eol == '\r\n':
              # We know how to split the result back into lines, so maxlinelen
              # can be checked.
              for line in encoded_body.splitlines():
                  self.assertLessEqual(len(line), maxlinelen)
  
      def test_encode_null(self):
          self._test_encode('', '')
  
      def test_encode_null_lines(self):
          self._test_encode('\n\n', '\n\n')
  
      def test_encode_one_line(self):
          self._test_encode('hello\n', 'hello\n')
  
      def test_encode_one_line_crlf(self):
          self._test_encode('hello\r\n', 'hello\n')
  
      def test_encode_one_line_eol(self):
          self._test_encode('hello\n', 'hello\r\n', eol='\r\n')
  
      def test_encode_one_space(self):
          self._test_encode(' ', '=20')
  
      def test_encode_one_line_one_space(self):
          self._test_encode(' \n', '=20\n')
  
  # XXX: body_encode() expect strings, but uses ord(char) from these strings
  # to index into a 256-entry list.  For code points above 255, this will fail.
  # Should there be a check for 8-bit only ord() values in body, or at least
  # a comment about the expected input?
  
      def test_encode_two_lines_one_space(self):
          self._test_encode(' \n \n', '=20\n=20\n')
  
      def test_encode_one_word_trailing_spaces(self):
          self._test_encode('hello   ', 'hello  =20')
  
      def test_encode_one_line_trailing_spaces(self):
          self._test_encode('hello   \n', 'hello  =20\n')
  
      def test_encode_one_word_trailing_tab(self):
          self._test_encode('hello  \t', 'hello  =09')
  
      def test_encode_one_line_trailing_tab(self):
          self._test_encode('hello  \t\n', 'hello  =09\n')
  
      def test_encode_trailing_space_before_maxlinelen(self):
          self._test_encode('abcd \n1234', 'abcd =\n\n1234', maxlinelen=6)
  
      def test_encode_trailing_space_at_maxlinelen(self):
          self._test_encode('abcd \n1234', 'abcd=\n=20\n1234', maxlinelen=5)
  
      def test_encode_trailing_space_beyond_maxlinelen(self):
          self._test_encode('abcd \n1234', 'abc=\nd=20\n1234', maxlinelen=4)
  
      def test_encode_whitespace_lines(self):
          self._test_encode(' \n' * 5, '=20\n' * 5)
  
      def test_encode_quoted_equals(self):
          self._test_encode('a = b', 'a =3D b')
  
      def test_encode_one_long_string(self):
          self._test_encode('x' * 100, 'x' * 75 + '=\n' + 'x' * 25)
  
      def test_encode_one_long_line(self):
          self._test_encode('x' * 100 + '\n', 'x' * 75 + '=\n' + 'x' * 25 + '\n')
  
      def test_encode_one_very_long_line(self):
          self._test_encode('x' * 200 + '\n',
                  2 * ('x' * 75 + '=\n') + 'x' * 50 + '\n')
  
      def test_encode_shortest_maxlinelen(self):
          self._test_encode('=' * 5, '=3D=\n' * 4 + '=3D', maxlinelen=4)
  
      def test_encode_maxlinelen_too_small(self):
          self.assertRaises(ValueError, self._test_encode, '', '', maxlinelen=3)
  
      def test_encode(self):
          eq = self.assertEqual
          eq(quoprimime.body_encode(''), '')
          eq(quoprimime.body_encode('hello'), 'hello')
          # Test the binary flag
          eq(quoprimime.body_encode('hello\r\nworld'), 'hello\nworld')
          # Test the maxlinelen arg
          eq(quoprimime.body_encode('xxxx ' * 20, maxlinelen=40), """\
  xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx=
   xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxx=
  x xxxx xxxx xxxx xxxx=20""")
          # Test the eol argument
          eq(quoprimime.body_encode('xxxx ' * 20, maxlinelen=40, eol='\r\n'),
             """\
  xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx=\r
   xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxx=\r
  x xxxx xxxx xxxx xxxx=20""")
          eq(quoprimime.body_encode("""\
  one line
  
  two line"""), """\
  one line
  
  two line""")
  
  
  
  # Test the Charset class
  class TestCharset(unittest.TestCase):
      def tearDown(self):
          from email import charset as CharsetModule
          try:
              del CharsetModule.CHARSETS['fake']
          except KeyError:
              pass
  
      def test_codec_encodeable(self):
          eq = self.assertEqual
          # Make sure us-ascii = no Unicode conversion
          c = Charset('us-ascii')
          eq(c.header_encode('Hello World!'), 'Hello World!')
          # Test 8-bit idempotency with us-ascii
          s = '\xa4\xa2\xa4\xa4\xa4\xa6\xa4\xa8\xa4\xaa'
          self.assertRaises(UnicodeError, c.header_encode, s)
          c = Charset('utf-8')
          eq(c.header_encode(s), '=?utf-8?b?wqTCosKkwqTCpMKmwqTCqMKkwqo=?=')
  
      def test_body_encode(self):
          eq = self.assertEqual
          # Try a charset with QP body encoding
          c = Charset('iso-8859-1')
          eq('hello w=F6rld', c.body_encode('hello w\xf6rld'))
          # Try a charset with Base64 body encoding
          c = Charset('utf-8')
          eq('aGVsbG8gd29ybGQ=\n', c.body_encode(b'hello world'))
          # Try a charset with None body encoding
          c = Charset('us-ascii')
          eq('hello world', c.body_encode('hello world'))
          # Try the convert argument, where input codec != output codec
          c = Charset('euc-jp')
          # With apologies to Tokio Kikuchi ;)
          # XXX FIXME
  ##         try:
  ##             eq('\x1b$B5FCO;~IW\x1b(B',
  ##                c.body_encode('\xb5\xc6\xc3\xcf\xbb\xfe\xc9\xd7'))
  ##             eq('\xb5\xc6\xc3\xcf\xbb\xfe\xc9\xd7',
  ##                c.body_encode('\xb5\xc6\xc3\xcf\xbb\xfe\xc9\xd7', False))
  ##         except LookupError:
  ##             # We probably don't have the Japanese codecs installed
  ##             pass
          # Testing SF bug #625509, which we have to fake, since there are no
          # built-in encodings where the header encoding is QP but the body
          # encoding is not.
          from email import charset as CharsetModule
          CharsetModule.add_charset('fake', CharsetModule.QP, None, 'utf-8')
          c = Charset('fake')
          eq('hello world', c.body_encode('hello world'))
  
      def test_unicode_charset_name(self):
          charset = Charset('us-ascii')
          self.assertEqual(str(charset), 'us-ascii')
          self.assertRaises(errors.CharsetError, Charset, 'asc\xffii')
  
  
  
  # Test multilingual MIME headers.
  class TestHeader(TestEmailBase):
      def test_simple(self):
          eq = self.ndiffAssertEqual
          h = Header('Hello World!')
          eq(h.encode(), 'Hello World!')
          h.append(' Goodbye World!')
          eq(h.encode(), 'Hello World!  Goodbye World!')
  
      def test_simple_surprise(self):
          eq = self.ndiffAssertEqual
          h = Header('Hello World!')
          eq(h.encode(), 'Hello World!')
          h.append('Goodbye World!')
          eq(h.encode(), 'Hello World! Goodbye World!')
  
      def test_header_needs_no_decoding(self):
          h = 'no decoding needed'
          self.assertEqual(decode_header(h), [(h, None)])
  
      def test_long(self):
          h = Header("I am the very model of a modern Major-General; I've information vegetable, animal, and mineral; I know the kings of England, and I quote the fights historical from Marathon to Waterloo, in order categorical; I'm very well acquainted, too, with matters mathematical; I understand equations, both the simple and quadratical; about binomial theorem I'm teeming with a lot o' news, with many cheerful facts about the square of the hypotenuse.",
                     maxlinelen=76)
          for l in h.encode(splitchars=' ').split('\n '):
              self.assertTrue(len(l) <= 76)
  
      def test_multilingual(self):
          eq = self.ndiffAssertEqual
          g = Charset("iso-8859-1")
          cz = Charset("iso-8859-2")
          utf8 = Charset("utf-8")
          g_head = (b'Die Mieter treten hier ein werden mit einem '
                    b'Foerderband komfortabel den Korridor entlang, '
                    b'an s\xfcdl\xfcndischen Wandgem\xe4lden vorbei, '
                    b'gegen die rotierenden Klingen bef\xf6rdert. ')
          cz_head = (b'Finan\xe8ni metropole se hroutily pod tlakem jejich '
                     b'd\xf9vtipu.. ')
          utf8_head = ('\u6b63\u78ba\u306b\u8a00\u3046\u3068\u7ffb\u8a33\u306f'
                       '\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u4e00'
                       '\u90e8\u306f\u30c9\u30a4\u30c4\u8a9e\u3067\u3059\u304c'
                       '\u3001\u3042\u3068\u306f\u3067\u305f\u3089\u3081\u3067'
                       '\u3059\u3002\u5b9f\u969b\u306b\u306f\u300cWenn ist das '
                       'Nunstuck git und Slotermeyer? Ja! Beiherhund das Oder '
                       'die Flipperwaldt gersput.\u300d\u3068\u8a00\u3063\u3066'
                       '\u3044\u307e\u3059\u3002')
          h = Header(g_head, g)
          h.append(cz_head, cz)
          h.append(utf8_head, utf8)
          enc = h.encode(maxlinelen=76)
          eq(enc, """\
  =?iso-8859-1?q?Die_Mieter_treten_hier_ein_werden_mit_einem_Foerderband_kom?=
   =?iso-8859-1?q?fortabel_den_Korridor_entlang=2C_an_s=FCdl=FCndischen_Wand?=
   =?iso-8859-1?q?gem=E4lden_vorbei=2C_gegen_die_rotierenden_Klingen_bef=F6r?=
   =?iso-8859-1?q?dert=2E_?= =?iso-8859-2?q?Finan=E8ni_metropole_se_hroutily?=
   =?iso-8859-2?q?_pod_tlakem_jejich_d=F9vtipu=2E=2E_?= =?utf-8?b?5q2j56K6?=
   =?utf-8?b?44Gr6KiA44GG44Go57+76Kiz44Gv44GV44KM44Gm44GE44G+44Gb44KT44CC?=
   =?utf-8?b?5LiA6YOo44Gv44OJ44Kk44OE6Kqe44Gn44GZ44GM44CB44GC44Go44Gv44Gn?=
   =?utf-8?b?44Gf44KJ44KB44Gn44GZ44CC5a6f6Zqb44Gr44Gv44CMV2VubiBpc3QgZGFz?=
   =?utf-8?b?IE51bnN0dWNrIGdpdCB1bmQgU2xvdGVybWV5ZXI/IEphISBCZWloZXJodW5k?=
   =?utf-8?b?IGRhcyBPZGVyIGRpZSBGbGlwcGVyd2FsZHQgZ2Vyc3B1dC7jgI3jgajoqIA=?=
   =?utf-8?b?44Gj44Gm44GE44G+44GZ44CC?=""")
          decoded = decode_header(enc)
          eq(len(decoded), 3)
          eq(decoded[0], (g_head, 'iso-8859-1'))
          eq(decoded[1], (cz_head, 'iso-8859-2'))
          eq(decoded[2], (utf8_head.encode('utf-8'), 'utf-8'))
          ustr = str(h)
          eq(ustr,
             (b'Die Mieter treten hier ein werden mit einem Foerderband '
              b'komfortabel den Korridor entlang, an s\xc3\xbcdl\xc3\xbcndischen '
              b'Wandgem\xc3\xa4lden vorbei, gegen die rotierenden Klingen '
              b'bef\xc3\xb6rdert. Finan\xc4\x8dni metropole se hroutily pod '
              b'tlakem jejich d\xc5\xafvtipu.. \xe6\xad\xa3\xe7\xa2\xba\xe3\x81'
              b'\xab\xe8\xa8\x80\xe3\x81\x86\xe3\x81\xa8\xe7\xbf\xbb\xe8\xa8\xb3'
              b'\xe3\x81\xaf\xe3\x81\x95\xe3\x82\x8c\xe3\x81\xa6\xe3\x81\x84\xe3'
              b'\x81\xbe\xe3\x81\x9b\xe3\x82\x93\xe3\x80\x82\xe4\xb8\x80\xe9\x83'
              b'\xa8\xe3\x81\xaf\xe3\x83\x89\xe3\x82\xa4\xe3\x83\x84\xe8\xaa\x9e'
              b'\xe3\x81\xa7\xe3\x81\x99\xe3\x81\x8c\xe3\x80\x81\xe3\x81\x82\xe3'
              b'\x81\xa8\xe3\x81\xaf\xe3\x81\xa7\xe3\x81\x9f\xe3\x82\x89\xe3\x82'
              b'\x81\xe3\x81\xa7\xe3\x81\x99\xe3\x80\x82\xe5\xae\x9f\xe9\x9a\x9b'
              b'\xe3\x81\xab\xe3\x81\xaf\xe3\x80\x8cWenn ist das Nunstuck git '
              b'und Slotermeyer? Ja! Beiherhund das Oder die Flipperwaldt '
              b'gersput.\xe3\x80\x8d\xe3\x81\xa8\xe8\xa8\x80\xe3\x81\xa3\xe3\x81'
              b'\xa6\xe3\x81\x84\xe3\x81\xbe\xe3\x81\x99\xe3\x80\x82'
              ).decode('utf-8'))
          # Test make_header()
          newh = make_header(decode_header(enc))
          eq(newh, h)
  
      def test_empty_header_encode(self):
          h = Header()
          self.assertEqual(h.encode(), '')
  
      def test_header_ctor_default_args(self):
          eq = self.ndiffAssertEqual
          h = Header()
          eq(h, '')
          h.append('foo', Charset('iso-8859-1'))
          eq(h, 'foo')
  
      def test_explicit_maxlinelen(self):
          eq = self.ndiffAssertEqual
          hstr = ('A very long line that must get split to something other '
                  'than at the 76th character boundary to test the non-default '
                  'behavior')
          h = Header(hstr)
          eq(h.encode(), '''\
  A very long line that must get split to something other than at the 76th
   character boundary to test the non-default behavior''')
          eq(str(h), hstr)
          h = Header(hstr, header_name='Subject')
          eq(h.encode(), '''\
  A very long line that must get split to something other than at the
   76th character boundary to test the non-default behavior''')
          eq(str(h), hstr)
          h = Header(hstr, maxlinelen=1024, header_name='Subject')
          eq(h.encode(), hstr)
          eq(str(h), hstr)
  
      def test_quopri_splittable(self):
          eq = self.ndiffAssertEqual
          h = Header(charset='iso-8859-1', maxlinelen=20)
          x = 'xxxx ' * 20
          h.append(x)
          s = h.encode()
          eq(s, """\
  =?iso-8859-1?q?xxx?=
   =?iso-8859-1?q?x_?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?_x?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?x_?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?_x?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?x_?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?_x?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?x_?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?_x?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?x_?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?_x?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?x_?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?_x?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?x_?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?_x?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?x_?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?_x?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?x_?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?_x?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?x_?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?xx?=
   =?iso-8859-1?q?_?=""")
          eq(x, str(make_header(decode_header(s))))
          h = Header(charset='iso-8859-1', maxlinelen=40)
          h.append('xxxx ' * 20)
          s = h.encode()
          eq(s, """\
  =?iso-8859-1?q?xxxx_xxxx_xxxx_xxxx_xxx?=
   =?iso-8859-1?q?x_xxxx_xxxx_xxxx_xxxx_?=
   =?iso-8859-1?q?xxxx_xxxx_xxxx_xxxx_xx?=
   =?iso-8859-1?q?xx_xxxx_xxxx_xxxx_xxxx?=
   =?iso-8859-1?q?_xxxx_xxxx_?=""")
          eq(x, str(make_header(decode_header(s))))
  
      def test_base64_splittable(self):
          eq = self.ndiffAssertEqual
          h = Header(charset='koi8-r', maxlinelen=20)
          x = 'xxxx ' * 20
          h.append(x)
          s = h.encode()
          eq(s, """\
  =?koi8-r?b?eHh4?=
   =?koi8-r?b?eCB4?=
   =?koi8-r?b?eHh4?=
   =?koi8-r?b?IHh4?=
   =?koi8-r?b?eHgg?=
   =?koi8-r?b?eHh4?=
   =?koi8-r?b?eCB4?=
   =?koi8-r?b?eHh4?=
   =?koi8-r?b?IHh4?=
   =?koi8-r?b?eHgg?=
   =?koi8-r?b?eHh4?=
   =?koi8-r?b?eCB4?=
   =?koi8-r?b?eHh4?=
   =?koi8-r?b?IHh4?=
   =?koi8-r?b?eHgg?=
   =?koi8-r?b?eHh4?=
   =?koi8-r?b?eCB4?=
   =?koi8-r?b?eHh4?=
   =?koi8-r?b?IHh4?=
   =?koi8-r?b?eHgg?=
   =?koi8-r?b?eHh4?=
   =?koi8-r?b?eCB4?=
   =?koi8-r?b?eHh4?=
   =?koi8-r?b?IHh4?=
   =?koi8-r?b?eHgg?=
   =?koi8-r?b?eHh4?=
   =?koi8-r?b?eCB4?=
   =?koi8-r?b?eHh4?=
   =?koi8-r?b?IHh4?=
   =?koi8-r?b?eHgg?=
   =?koi8-r?b?eHh4?=
   =?koi8-r?b?eCB4?=
   =?koi8-r?b?eHh4?=
   =?koi8-r?b?IA==?=""")
          eq(x, str(make_header(decode_header(s))))
          h = Header(charset='koi8-r', maxlinelen=40)
          h.append(x)
          s = h.encode()
          eq(s, """\
  =?koi8-r?b?eHh4eCB4eHh4IHh4eHggeHh4?=
   =?koi8-r?b?eCB4eHh4IHh4eHggeHh4eCB4?=
   =?koi8-r?b?eHh4IHh4eHggeHh4eCB4eHh4?=
   =?koi8-r?b?IHh4eHggeHh4eCB4eHh4IHh4?=
   =?koi8-r?b?eHggeHh4eCB4eHh4IHh4eHgg?=
   =?koi8-r?b?eHh4eCB4eHh4IA==?=""")
          eq(x, str(make_header(decode_header(s))))
  
      def test_us_ascii_header(self):
          eq = self.assertEqual
          s = 'hello'
          x = decode_header(s)
          eq(x, [('hello', None)])
          h = make_header(x)
          eq(s, h.encode())
  
      def test_string_charset(self):
          eq = self.assertEqual
          h = Header()
          h.append('hello', 'iso-8859-1')
          eq(h, 'hello')
  
  ##    def test_unicode_error(self):
  ##        raises = self.assertRaises
  ##        raises(UnicodeError, Header, u'[P\xf6stal]', 'us-ascii')
  ##        raises(UnicodeError, Header, '[P\xf6stal]', 'us-ascii')
  ##        h = Header()
  ##        raises(UnicodeError, h.append, u'[P\xf6stal]', 'us-ascii')
  ##        raises(UnicodeError, h.append, '[P\xf6stal]', 'us-ascii')
  ##        raises(UnicodeError, Header, u'\u83ca\u5730\u6642\u592b', 'iso-8859-1')
  
      def test_utf8_shortest(self):
          eq = self.assertEqual
          h = Header('p\xf6stal', 'utf-8')
          eq(h.encode(), '=?utf-8?q?p=C3=B6stal?=')
          h = Header('\u83ca\u5730\u6642\u592b', 'utf-8')
          eq(h.encode(), '=?utf-8?b?6I+K5Zyw5pmC5aSr?=')
  
      def test_bad_8bit_header(self):
          raises = self.assertRaises
          eq = self.assertEqual
          x = b'Ynwp4dUEbay Auction Semiar- No Charge \x96 Earn Big'
          raises(UnicodeError, Header, x)
          h = Header()
          raises(UnicodeError, h.append, x)
          e = x.decode('utf-8', 'replace')
          eq(str(Header(x, errors='replace')), e)
          h.append(x, errors='replace')
          eq(str(h), e)
  
      def test_escaped_8bit_header(self):
          x = b'Ynwp4dUEbay Auction Semiar- No Charge \x96 Earn Big'
          e = x.decode('ascii', 'surrogateescape')
          h = Header(e, charset=email.charset.UNKNOWN8BIT)
          self.assertEqual(str(h),
                          'Ynwp4dUEbay Auction Semiar- No Charge \uFFFD Earn Big')
          self.assertEqual(email.header.decode_header(h), [(x, 'unknown-8bit')])
  
      def test_header_handles_binary_unknown8bit(self):
          x = b'Ynwp4dUEbay Auction Semiar- No Charge \x96 Earn Big'
          h = Header(x, charset=email.charset.UNKNOWN8BIT)
          self.assertEqual(str(h),
                          'Ynwp4dUEbay Auction Semiar- No Charge \uFFFD Earn Big')
          self.assertEqual(email.header.decode_header(h), [(x, 'unknown-8bit')])
  
      def test_make_header_handles_binary_unknown8bit(self):
          x = b'Ynwp4dUEbay Auction Semiar- No Charge \x96 Earn Big'
          h = Header(x, charset=email.charset.UNKNOWN8BIT)
          h2 = email.header.make_header(email.header.decode_header(h))
          self.assertEqual(str(h2),
                          'Ynwp4dUEbay Auction Semiar- No Charge \uFFFD Earn Big')
          self.assertEqual(email.header.decode_header(h2), [(x, 'unknown-8bit')])
  
      def test_modify_returned_list_does_not_change_header(self):
          h = Header('test')
          chunks = email.header.decode_header(h)
          chunks.append(('ascii', 'test2'))
          self.assertEqual(str(h), 'test')
  
      def test_encoded_adjacent_nonencoded(self):
          eq = self.assertEqual
          h = Header()
          h.append('hello', 'iso-8859-1')
          h.append('world')
          s = h.encode()
          eq(s, '=?iso-8859-1?q?hello?= world')
          h = make_header(decode_header(s))
          eq(h.encode(), s)
  
      def test_whitespace_keeper(self):
          eq = self.assertEqual
          s = 'Subject: =?koi8-r?b?8NLP18XSy8EgzsEgxsnOwczYztk=?= =?koi8-r?q?=CA?= zz.'
          parts = decode_header(s)
          eq(parts, [(b'Subject: ', None), (b'\xf0\xd2\xcf\xd7\xc5\xd2\xcb\xc1 \xce\xc1 \xc6\xc9\xce\xc1\xcc\xd8\xce\xd9\xca', 'koi8-r'), (b' zz.', None)])
          hdr = make_header(parts)
          eq(hdr.encode(),
             'Subject: =?koi8-r?b?8NLP18XSy8EgzsEgxsnOwczYztnK?= zz.')
  
      def test_broken_base64_header(self):
          raises = self.assertRaises
          s = 'Subject: =?EUC-KR?B?CSixpLDtKSC/7Liuvsax4iC6uLmwMcijIKHaILzSwd/H0SC8+LCjwLsgv7W/+Mj3I ?='
          raises(errors.HeaderParseError, decode_header, s)
  
      def test_shift_jis_charset(self):
          h = Header('文', charset='shift_jis')
          self.assertEqual(h.encode(), '=?iso-2022-jp?b?GyRCSjgbKEI=?=')
  
      def test_flatten_header_with_no_value(self):
          # Issue 11401 (regression from email 4.x)  Note that the space after
          # the header doesn't reflect the input, but this is also the way
          # email 4.x behaved.  At some point it would be nice to fix that.
          msg = email.message_from_string("EmptyHeader:")
          self.assertEqual(str(msg), "EmptyHeader: \n\n")
  
      def test_encode_preserves_leading_ws_on_value(self):
          msg = Message()
          msg['SomeHeader'] = '   value with leading ws'
          self.assertEqual(str(msg), "SomeHeader:    value with leading ws\n\n")
  
  
  
  # Test RFC 2231 header parameters (en/de)coding
  class TestRFC2231(TestEmailBase):
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_encoded_with_double_quotes
      # test_headerregistry.TestContentTypeHeader.rfc2231_single_quote_inside_double_quotes
      def test_get_param(self):
          eq = self.assertEqual
          msg = self._msgobj('msg_29.txt')
          eq(msg.get_param('title'),
             ('us-ascii', 'en', 'This is even more ***fun*** isn\'t it!'))
          eq(msg.get_param('title', unquote=False),
             ('us-ascii', 'en', '"This is even more ***fun*** isn\'t it!"'))
  
      def test_set_param(self):
          eq = self.ndiffAssertEqual
          msg = Message()
          msg.set_param('title', 'This is even more ***fun*** isn\'t it!',
                        charset='us-ascii')
          eq(msg.get_param('title'),
             ('us-ascii', '', 'This is even more ***fun*** isn\'t it!'))
          msg.set_param('title', 'This is even more ***fun*** isn\'t it!',
                        charset='us-ascii', language='en')
          eq(msg.get_param('title'),
             ('us-ascii', 'en', 'This is even more ***fun*** isn\'t it!'))
          msg = self._msgobj('msg_01.txt')
          msg.set_param('title', 'This is even more ***fun*** isn\'t it!',
                        charset='us-ascii', language='en')
          eq(msg.as_string(maxheaderlen=78), """\
  Return-Path: <bbb@zzz.org>
  Delivered-To: bbb@zzz.org
  Received: by mail.zzz.org (Postfix, from userid 889)
  \tid 27CEAD38CC; Fri,  4 May 2001 14:05:44 -0400 (EDT)
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  Message-ID: <15090.61304.110929.45684@aaa.zzz.org>
  From: bbb@ddd.com (John X. Doe)
  To: bbb@zzz.org
  Subject: This is a test message
  Date: Fri, 4 May 2001 14:05:44 -0400
  Content-Type: text/plain; charset=us-ascii;
   title*=us-ascii'en'This%20is%20even%20more%20%2A%2A%2Afun%2A%2A%2A%20isn%27t%20it%21
  
  
  Hi,
  
  Do you like this message?
  
  -Me
  """)
  
      def test_set_param_requote(self):
          msg = Message()
          msg.set_param('title', 'foo')
          self.assertEqual(msg['content-type'], 'text/plain; title="foo"')
          msg.set_param('title', 'bar', requote=False)
          self.assertEqual(msg['content-type'], 'text/plain; title=bar')
          # tspecial is still quoted.
          msg.set_param('title', "(bar)bell", requote=False)
          self.assertEqual(msg['content-type'], 'text/plain; title="(bar)bell"')
  
      def test_del_param(self):
          eq = self.ndiffAssertEqual
          msg = self._msgobj('msg_01.txt')
          msg.set_param('foo', 'bar', charset='us-ascii', language='en')
          msg.set_param('title', 'This is even more ***fun*** isn\'t it!',
              charset='us-ascii', language='en')
          msg.del_param('foo', header='Content-Type')
          eq(msg.as_string(maxheaderlen=78), """\
  Return-Path: <bbb@zzz.org>
  Delivered-To: bbb@zzz.org
  Received: by mail.zzz.org (Postfix, from userid 889)
  \tid 27CEAD38CC; Fri,  4 May 2001 14:05:44 -0400 (EDT)
  MIME-Version: 1.0
  Content-Transfer-Encoding: 7bit
  Message-ID: <15090.61304.110929.45684@aaa.zzz.org>
  From: bbb@ddd.com (John X. Doe)
  To: bbb@zzz.org
  Subject: This is a test message
  Date: Fri, 4 May 2001 14:05:44 -0400
  Content-Type: text/plain; charset="us-ascii";
   title*=us-ascii'en'This%20is%20even%20more%20%2A%2A%2Afun%2A%2A%2A%20isn%27t%20it%21
  
  
  Hi,
  
  Do you like this message?
  
  -Me
  """)
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_encoded_charset
      # I changed the charset name, though, because the one in the file isn't
      # a legal charset name.  Should add a test for an illegal charset.
      def test_rfc2231_get_content_charset(self):
          eq = self.assertEqual
          msg = self._msgobj('msg_32.txt')
          eq(msg.get_content_charset(), 'us-ascii')
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_encoded_no_double_quotes
      def test_rfc2231_parse_rfc_quoting(self):
          m = textwrap.dedent('''\
              Content-Disposition: inline;
              \tfilename*0*=''This%20is%20even%20more%20;
              \tfilename*1*=%2A%2A%2Afun%2A%2A%2A%20;
              \tfilename*2="is it not.pdf"
  
              ''')
          msg = email.message_from_string(m)
          self.assertEqual(msg.get_filename(),
                           'This is even more ***fun*** is it not.pdf')
          self.assertEqual(m, msg.as_string())
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_encoded_with_double_quotes
      def test_rfc2231_parse_extra_quoting(self):
          m = textwrap.dedent('''\
              Content-Disposition: inline;
              \tfilename*0*="''This%20is%20even%20more%20";
              \tfilename*1*="%2A%2A%2Afun%2A%2A%2A%20";
              \tfilename*2="is it not.pdf"
  
              ''')
          msg = email.message_from_string(m)
          self.assertEqual(msg.get_filename(),
                           'This is even more ***fun*** is it not.pdf')
          self.assertEqual(m, msg.as_string())
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_no_language_or_charset
      # but new test uses *0* because otherwise lang/charset is not valid.
      # test_headerregistry.TestContentTypeHeader.rfc2231_segmented_normal_values
      def test_rfc2231_no_language_or_charset(self):
          m = '''\
  Content-Transfer-Encoding: 8bit
  Content-Disposition: inline; filename="file____C__DOCUMENTS_20AND_20SETTINGS_FABIEN_LOCAL_20SETTINGS_TEMP_nsmail.htm"
  Content-Type: text/html; NAME*0=file____C__DOCUMENTS_20AND_20SETTINGS_FABIEN_LOCAL_20SETTINGS_TEM; NAME*1=P_nsmail.htm
  
  '''
          msg = email.message_from_string(m)
          param = msg.get_param('NAME')
          self.assertFalse(isinstance(param, tuple))
          self.assertEqual(
              param,
              'file____C__DOCUMENTS_20AND_20SETTINGS_FABIEN_LOCAL_20SETTINGS_TEMP_nsmail.htm')
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_encoded_no_charset
      def test_rfc2231_no_language_or_charset_in_filename(self):
          m = '''\
  Content-Disposition: inline;
  \tfilename*0*="''This%20is%20even%20more%20";
  \tfilename*1*="%2A%2A%2Afun%2A%2A%2A%20";
  \tfilename*2="is it not.pdf"
  
  '''
          msg = email.message_from_string(m)
          self.assertEqual(msg.get_filename(),
                           'This is even more ***fun*** is it not.pdf')
  
      # Duplicate of previous test?
      def test_rfc2231_no_language_or_charset_in_filename_encoded(self):
          m = '''\
  Content-Disposition: inline;
  \tfilename*0*="''This%20is%20even%20more%20";
  \tfilename*1*="%2A%2A%2Afun%2A%2A%2A%20";
  \tfilename*2="is it not.pdf"
  
  '''
          msg = email.message_from_string(m)
          self.assertEqual(msg.get_filename(),
                           'This is even more ***fun*** is it not.pdf')
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_partly_encoded,
      # but the test below is wrong (the first part should be decoded).
      def test_rfc2231_partly_encoded(self):
          m = '''\
  Content-Disposition: inline;
  \tfilename*0="''This%20is%20even%20more%20";
  \tfilename*1*="%2A%2A%2Afun%2A%2A%2A%20";
  \tfilename*2="is it not.pdf"
  
  '''
          msg = email.message_from_string(m)
          self.assertEqual(
              msg.get_filename(),
              'This%20is%20even%20more%20***fun*** is it not.pdf')
  
      def test_rfc2231_partly_nonencoded(self):
          m = '''\
  Content-Disposition: inline;
  \tfilename*0="This%20is%20even%20more%20";
  \tfilename*1="%2A%2A%2Afun%2A%2A%2A%20";
  \tfilename*2="is it not.pdf"
  
  '''
          msg = email.message_from_string(m)
          self.assertEqual(
              msg.get_filename(),
              'This%20is%20even%20more%20%2A%2A%2Afun%2A%2A%2A%20is it not.pdf')
  
      def test_rfc2231_no_language_or_charset_in_boundary(self):
          m = '''\
  Content-Type: multipart/alternative;
  \tboundary*0*="''This%20is%20even%20more%20";
  \tboundary*1*="%2A%2A%2Afun%2A%2A%2A%20";
  \tboundary*2="is it not.pdf"
  
  '''
          msg = email.message_from_string(m)
          self.assertEqual(msg.get_boundary(),
                           'This is even more ***fun*** is it not.pdf')
  
      def test_rfc2231_no_language_or_charset_in_charset(self):
          # This is a nonsensical charset value, but tests the code anyway
          m = '''\
  Content-Type: text/plain;
  \tcharset*0*="This%20is%20even%20more%20";
  \tcharset*1*="%2A%2A%2Afun%2A%2A%2A%20";
  \tcharset*2="is it not.pdf"
  
  '''
          msg = email.message_from_string(m)
          self.assertEqual(msg.get_content_charset(),
                           'this is even more ***fun*** is it not.pdf')
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_unknown_charset_treated_as_ascii
      def test_rfc2231_bad_encoding_in_filename(self):
          m = '''\
  Content-Disposition: inline;
  \tfilename*0*="bogus'xx'This%20is%20even%20more%20";
  \tfilename*1*="%2A%2A%2Afun%2A%2A%2A%20";
  \tfilename*2="is it not.pdf"
  
  '''
          msg = email.message_from_string(m)
          self.assertEqual(msg.get_filename(),
                           'This is even more ***fun*** is it not.pdf')
  
      def test_rfc2231_bad_encoding_in_charset(self):
          m = """\
  Content-Type: text/plain; charset*=bogus''utf-8%E2%80%9D
  
  """
          msg = email.message_from_string(m)
          # This should return None because non-ascii characters in the charset
          # are not allowed.
          self.assertEqual(msg.get_content_charset(), None)
  
      def test_rfc2231_bad_character_in_charset(self):
          m = """\
  Content-Type: text/plain; charset*=ascii''utf-8%E2%80%9D
  
  """
          msg = email.message_from_string(m)
          # This should return None because non-ascii characters in the charset
          # are not allowed.
          self.assertEqual(msg.get_content_charset(), None)
  
      def test_rfc2231_bad_character_in_filename(self):
          m = '''\
  Content-Disposition: inline;
  \tfilename*0*="ascii'xx'This%20is%20even%20more%20";
  \tfilename*1*="%2A%2A%2Afun%2A%2A%2A%20";
  \tfilename*2*="is it not.pdf%E2"
  
  '''
          msg = email.message_from_string(m)
          self.assertEqual(msg.get_filename(),
                           'This is even more ***fun*** is it not.pdf\ufffd')
  
      def test_rfc2231_unknown_encoding(self):
          m = """\
  Content-Transfer-Encoding: 8bit
  Content-Disposition: inline; filename*=X-UNKNOWN''myfile.txt
  
  """
          msg = email.message_from_string(m)
          self.assertEqual(msg.get_filename(), 'myfile.txt')
  
      def test_rfc2231_single_tick_in_filename_extended(self):
          eq = self.assertEqual
          m = """\
  Content-Type: application/x-foo;
  \tname*0*=\"Frank's\"; name*1*=\" Document\"
  
  """
          msg = email.message_from_string(m)
          charset, language, s = msg.get_param('name')
          eq(charset, None)
          eq(language, None)
          eq(s, "Frank's Document")
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_single_quote_inside_double_quotes
      def test_rfc2231_single_tick_in_filename(self):
          m = """\
  Content-Type: application/x-foo; name*0=\"Frank's\"; name*1=\" Document\"
  
  """
          msg = email.message_from_string(m)
          param = msg.get_param('name')
          self.assertFalse(isinstance(param, tuple))
          self.assertEqual(param, "Frank's Document")
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_single_quote_in_value_with_charset_and_lang
      def test_rfc2231_tick_attack_extended(self):
          eq = self.assertEqual
          m = """\
  Content-Type: application/x-foo;
  \tname*0*=\"us-ascii'en-us'Frank's\"; name*1*=\" Document\"
  
  """
          msg = email.message_from_string(m)
          charset, language, s = msg.get_param('name')
          eq(charset, 'us-ascii')
          eq(language, 'en-us')
          eq(s, "Frank's Document")
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_single_quote_in_non_encoded_value
      def test_rfc2231_tick_attack(self):
          m = """\
  Content-Type: application/x-foo;
  \tname*0=\"us-ascii'en-us'Frank's\"; name*1=\" Document\"
  
  """
          msg = email.message_from_string(m)
          param = msg.get_param('name')
          self.assertFalse(isinstance(param, tuple))
          self.assertEqual(param, "us-ascii'en-us'Frank's Document")
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_single_quotes_inside_quotes
      def test_rfc2231_no_extended_values(self):
          eq = self.assertEqual
          m = """\
  Content-Type: application/x-foo; name=\"Frank's Document\"
  
  """
          msg = email.message_from_string(m)
          eq(msg.get_param('name'), "Frank's Document")
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_encoded_then_unencoded_segments
      def test_rfc2231_encoded_then_unencoded_segments(self):
          eq = self.assertEqual
          m = """\
  Content-Type: application/x-foo;
  \tname*0*=\"us-ascii'en-us'My\";
  \tname*1=\" Document\";
  \tname*2*=\" For You\"
  
  """
          msg = email.message_from_string(m)
          charset, language, s = msg.get_param('name')
          eq(charset, 'us-ascii')
          eq(language, 'en-us')
          eq(s, 'My Document For You')
  
      # test_headerregistry.TestContentTypeHeader.rfc2231_unencoded_then_encoded_segments
      # test_headerregistry.TestContentTypeHeader.rfc2231_quoted_unencoded_then_encoded_segments
      def test_rfc2231_unencoded_then_encoded_segments(self):
          eq = self.assertEqual
          m = """\
  Content-Type: application/x-foo;
  \tname*0=\"us-ascii'en-us'My\";
  \tname*1*=\" Document\";
  \tname*2*=\" For You\"
  
  """
          msg = email.message_from_string(m)
          charset, language, s = msg.get_param('name')
          eq(charset, 'us-ascii')
          eq(language, 'en-us')
          eq(s, 'My Document For You')
  
  
  
  # Tests to ensure that signed parts of an email are completely preserved, as
  # required by RFC1847 section 2.1.  Note that these are incomplete, because the
  # email package does not currently always preserve the body.  See issue 1670765.
  class TestSigned(TestEmailBase):
  
      def _msg_and_obj(self, filename):
          with openfile(filename) as fp:
              original = fp.read()
              msg = email.message_from_string(original)
          return original, msg
  
      def _signed_parts_eq(self, original, result):
          # Extract the first mime part of each message
          import re
          repart = re.compile(r'^--([^\n]+)\n(.*?)\n--\1$', re.S | re.M)
          inpart = repart.search(original).group(2)
          outpart = repart.search(result).group(2)
          self.assertEqual(outpart, inpart)
  
      def test_long_headers_as_string(self):
          original, msg = self._msg_and_obj('msg_45.txt')
          result = msg.as_string()
          self._signed_parts_eq(original, result)
  
      def test_long_headers_as_string_maxheaderlen(self):
          original, msg = self._msg_and_obj('msg_45.txt')
          result = msg.as_string(maxheaderlen=60)
          self._signed_parts_eq(original, result)
  
      def test_long_headers_flatten(self):
          original, msg = self._msg_and_obj('msg_45.txt')
          fp = StringIO()
          Generator(fp).flatten(msg)
          result = fp.getvalue()
          self._signed_parts_eq(original, result)
  
  
  
  if __name__ == '__main__':
      unittest.main()
  