text: # Copyright (C) 2002 Python Software Foundation
  # email package unit tests for (optional) Asian codecs
  
  import unittest
  from test.test_support import TestSkipped, run_unittest
  
  from email.test.test_email import TestEmailBase
  from email.Charset import Charset
  from email.Header import Header, decode_header
  
  # See if we have the Japanese codecs package installed
  try:
      unicode('foo', 'japanese.iso-2022-jp')
  except LookupError:
      raise TestSkipped, 'Optional Japanese codecs not installed'
  
  
  
  class TestEmailAsianCodecs(TestEmailBase):
      def test_japanese_codecs(self):
          eq = self.ndiffAssertEqual
          j = Charset("euc-jp")
          g = Charset("iso-8859-1")
          h = Header("Hello World!")
          jhello = '\xa5\xcf\xa5\xed\xa1\xbc\xa5\xef\xa1\xbc\xa5\xeb\xa5\xc9\xa1\xaa'
          ghello = 'Gr\xfc\xdf Gott!'
          h.append(jhello, j)
          h.append(ghello, g)
          # BAW: This used to -- and maybe should -- fold the two iso-8859-1
          # chunks into a single encoded word.  However it doesn't violate the
          # standard to have them as two encoded chunks and maybe it's
          # reasonable <wink> for each .append() call to result in a separate
          # encoded word.
          eq(h.encode(), """\
  Hello World! =?iso-2022-jp?b?GyRCJU8lbSE8JW8hPCVrJUkhKhsoQg==?=
   =?iso-8859-1?q?Gr=FC=DF?= =?iso-8859-1?q?_Gott!?=""")
          eq(decode_header(h.encode()),
             [('Hello World!', None),
              ('\x1b$B%O%m!<%o!<%k%I!*\x1b(B', 'iso-2022-jp'),
              ('Gr\xfc\xdf Gott!', 'iso-8859-1')])
          long = 'test-ja \xa4\xd8\xc5\xea\xb9\xc6\xa4\xb5\xa4\xec\xa4\xbf\xa5\xe1\xa1\xbc\xa5\xeb\xa4\xcf\xbb\xca\xb2\xf1\xbc\xd4\xa4\xce\xbe\xb5\xc7\xa7\xa4\xf2\xc2\xd4\xa4\xc3\xa4\xc6\xa4\xa4\xa4\xde\xa4\xb9'
          h = Header(long, j, header_name="Subject")
          # test a very long header
          enc = h.encode()
          # TK: splitting point may differ by codec design and/or Header encoding
          eq(enc , """\
  =?iso-2022-jp?b?dGVzdC1qYSAbJEIkWEVqOUYkNSRsJD8lYSE8JWskTztKGyhC?=
   =?iso-2022-jp?b?GyRCMnE8VCROPjVHJyRyQlQkQyRGJCQkXiQ5GyhC?=""")
          # TK: full decode comparison
          eq(h.__unicode__().encode('euc-jp'), long)
  
  
  
  def suite():
      suite = unittest.TestSuite()
      suite.addTest(unittest.makeSuite(TestEmailAsianCodecs))
      return suite
  
  
  def test_main():
      run_unittest(TestEmailAsianCodecs)
  
  
  
  if __name__ == '__main__':
      unittest.main(defaultTest='suite')
  