text: import collections
  import configparser
  import io
  import os
  import pathlib
  import textwrap
  import unittest
  import warnings
  
  from test import support
  from test.support import os_helper
  
  
  class SortedDict(collections.UserDict):
  
      def items(self):
          return sorted(self.data.items())
  
      def keys(self):
          return sorted(self.data.keys())
  
      def values(self):
          return [i[1] for i in self.items()]
  
      def iteritems(self):
          return iter(self.items())
  
      def iterkeys(self):
          return iter(self.keys())
  
      def itervalues(self):
          return iter(self.values())
  
      __iter__ = iterkeys
  
  
  class CfgParserTestCaseClass:
      allow_no_value = False
      delimiters = ('=', ':')
      comment_prefixes = (';', '#')
      inline_comment_prefixes = (';', '#')
      empty_lines_in_values = True
      dict_type = configparser._default_dict
      strict = False
      default_section = configparser.DEFAULTSECT
      interpolation = configparser._UNSET
  
      def newconfig(self, defaults=None):
          arguments = dict(
              defaults=defaults,
              allow_no_value=self.allow_no_value,
              delimiters=self.delimiters,
              comment_prefixes=self.comment_prefixes,
              inline_comment_prefixes=self.inline_comment_prefixes,
              empty_lines_in_values=self.empty_lines_in_values,
              dict_type=self.dict_type,
              strict=self.strict,
              default_section=self.default_section,
              interpolation=self.interpolation,
          )
          instance = self.config_class(**arguments)
          return instance
  
      def fromstring(self, string, defaults=None):
          cf = self.newconfig(defaults)
          cf.read_string(string)
          return cf
  
  
  class BasicTestCase(CfgParserTestCaseClass):
  
      def basic_test(self, cf):
          E = ['Commented Bar',
               'Foo Bar',
               'Internationalized Stuff',
               'Long Line',
               'Section\\with$weird%characters[\t',
               'Spaces',
               'Spacey Bar',
               'Spacey Bar From The Beginning',
               'Types',
               ]
  
          if self.allow_no_value:
              E.append('NoValue')
          E.sort()
          F = [('baz', 'qwe'), ('foo', 'bar3')]
  
          # API access
          L = cf.sections()
          L.sort()
          eq = self.assertEqual
          eq(L, E)
          L = cf.items('Spacey Bar From The Beginning')
          L.sort()
          eq(L, F)
  
          # mapping access
          L = [section for section in cf]
          L.sort()
          E.append(self.default_section)
          E.sort()
          eq(L, E)
          L = cf['Spacey Bar From The Beginning'].items()
          L = sorted(list(L))
          eq(L, F)
          L = cf.items()
          L = sorted(list(L))
          self.assertEqual(len(L), len(E))
          for name, section in L:
              eq(name, section.name)
          eq(cf.defaults(), cf[self.default_section])
  
          # The use of spaces in the section names serves as a
          # regression test for SourceForge bug #583248:
          # http://www.python.org/sf/583248
  
          # API access
          eq(cf.get('Foo Bar', 'foo'), 'bar1')
          eq(cf.get('Spacey Bar', 'foo'), 'bar2')
          eq(cf.get('Spacey Bar From The Beginning', 'foo'), 'bar3')
          eq(cf.get('Spacey Bar From The Beginning', 'baz'), 'qwe')
          eq(cf.get('Commented Bar', 'foo'), 'bar4')
          eq(cf.get('Commented Bar', 'baz'), 'qwe')
          eq(cf.get('Spaces', 'key with spaces'), 'value')
          eq(cf.get('Spaces', 'another with spaces'), 'splat!')
          eq(cf.getint('Types', 'int'), 42)
          eq(cf.get('Types', 'int'), "42")
          self.assertAlmostEqual(cf.getfloat('Types', 'float'), 0.44)
          eq(cf.get('Types', 'float'), "0.44")
          eq(cf.getboolean('Types', 'boolean'), False)
          eq(cf.get('Types', '123'), 'strange but acceptable')
          if self.allow_no_value:
              eq(cf.get('NoValue', 'option-without-value'), None)
  
          # test vars= and fallback=
          eq(cf.get('Foo Bar', 'foo', fallback='baz'), 'bar1')
          eq(cf.get('Foo Bar', 'foo', vars={'foo': 'baz'}), 'baz')
          with self.assertRaises(configparser.NoSectionError):
              cf.get('No Such Foo Bar', 'foo')
          with self.assertRaises(configparser.NoOptionError):
              cf.get('Foo Bar', 'no-such-foo')
          eq(cf.get('No Such Foo Bar', 'foo', fallback='baz'), 'baz')
          eq(cf.get('Foo Bar', 'no-such-foo', fallback='baz'), 'baz')
          eq(cf.get('Spacey Bar', 'foo', fallback=None), 'bar2')
          eq(cf.get('No Such Spacey Bar', 'foo', fallback=None), None)
          eq(cf.getint('Types', 'int', fallback=18), 42)
          eq(cf.getint('Types', 'no-such-int', fallback=18), 18)
          eq(cf.getint('Types', 'no-such-int', fallback="18"), "18") # sic!
          with self.assertRaises(configparser.NoOptionError):
              cf.getint('Types', 'no-such-int')
          self.assertAlmostEqual(cf.getfloat('Types', 'float',
                                             fallback=0.0), 0.44)
          self.assertAlmostEqual(cf.getfloat('Types', 'no-such-float',
                                             fallback=0.0), 0.0)
          eq(cf.getfloat('Types', 'no-such-float', fallback="0.0"), "0.0") # sic!
          with self.assertRaises(configparser.NoOptionError):
              cf.getfloat('Types', 'no-such-float')
          eq(cf.getboolean('Types', 'boolean', fallback=True), False)
          eq(cf.getboolean('Types', 'no-such-boolean', fallback="yes"),
             "yes") # sic!
          eq(cf.getboolean('Types', 'no-such-boolean', fallback=True), True)
          with self.assertRaises(configparser.NoOptionError):
              cf.getboolean('Types', 'no-such-boolean')
          eq(cf.getboolean('No Such Types', 'boolean', fallback=True), True)
          if self.allow_no_value:
              eq(cf.get('NoValue', 'option-without-value', fallback=False), None)
              eq(cf.get('NoValue', 'no-such-option-without-value',
                        fallback=False), False)
  
          # mapping access
          eq(cf['Foo Bar']['foo'], 'bar1')
          eq(cf['Spacey Bar']['foo'], 'bar2')
          section = cf['Spacey Bar From The Beginning']
          eq(section.name, 'Spacey Bar From The Beginning')
          self.assertIs(section.parser, cf)
          with self.assertRaises(AttributeError):
              section.name = 'Name is read-only'
          with self.assertRaises(AttributeError):
              section.parser = 'Parser is read-only'
          eq(section['foo'], 'bar3')
          eq(section['baz'], 'qwe')
          eq(cf['Commented Bar']['foo'], 'bar4')
          eq(cf['Commented Bar']['baz'], 'qwe')
          eq(cf['Spaces']['key with spaces'], 'value')
          eq(cf['Spaces']['another with spaces'], 'splat!')
          eq(cf['Long Line']['foo'],
             'this line is much, much longer than my editor\nlikes it.')
          if self.allow_no_value:
              eq(cf['NoValue']['option-without-value'], None)
          # test vars= and fallback=
          eq(cf['Foo Bar'].get('foo', 'baz'), 'bar1')
          eq(cf['Foo Bar'].get('foo', fallback='baz'), 'bar1')
          eq(cf['Foo Bar'].get('foo', vars={'foo': 'baz'}), 'baz')
          with self.assertRaises(KeyError):
              cf['No Such Foo Bar']['foo']
          with self.assertRaises(KeyError):
              cf['Foo Bar']['no-such-foo']
          with self.assertRaises(KeyError):
              cf['No Such Foo Bar'].get('foo', fallback='baz')
          eq(cf['Foo Bar'].get('no-such-foo', 'baz'), 'baz')
          eq(cf['Foo Bar'].get('no-such-foo', fallback='baz'), 'baz')
          eq(cf['Foo Bar'].get('no-such-foo'), None)
          eq(cf['Spacey Bar'].get('foo', None), 'bar2')
          eq(cf['Spacey Bar'].get('foo', fallback=None), 'bar2')
          with self.assertRaises(KeyError):
              cf['No Such Spacey Bar'].get('foo', None)
          eq(cf['Types'].getint('int', 18), 42)
          eq(cf['Types'].getint('int', fallback=18), 42)
          eq(cf['Types'].getint('no-such-int', 18), 18)
          eq(cf['Types'].getint('no-such-int', fallback=18), 18)
          eq(cf['Types'].getint('no-such-int', "18"), "18") # sic!
          eq(cf['Types'].getint('no-such-int', fallback="18"), "18") # sic!
          eq(cf['Types'].getint('no-such-int'), None)
          self.assertAlmostEqual(cf['Types'].getfloat('float', 0.0), 0.44)
          self.assertAlmostEqual(cf['Types'].getfloat('float',
                                                      fallback=0.0), 0.44)
          self.assertAlmostEqual(cf['Types'].getfloat('no-such-float', 0.0), 0.0)
          self.assertAlmostEqual(cf['Types'].getfloat('no-such-float',
                                                      fallback=0.0), 0.0)
          eq(cf['Types'].getfloat('no-such-float', "0.0"), "0.0") # sic!
          eq(cf['Types'].getfloat('no-such-float', fallback="0.0"), "0.0") # sic!
          eq(cf['Types'].getfloat('no-such-float'), None)
          eq(cf['Types'].getboolean('boolean', True), False)
          eq(cf['Types'].getboolean('boolean', fallback=True), False)
          eq(cf['Types'].getboolean('no-such-boolean', "yes"), "yes") # sic!
          eq(cf['Types'].getboolean('no-such-boolean', fallback="yes"),
             "yes") # sic!
          eq(cf['Types'].getboolean('no-such-boolean', True), True)
          eq(cf['Types'].getboolean('no-such-boolean', fallback=True), True)
          eq(cf['Types'].getboolean('no-such-boolean'), None)
          if self.allow_no_value:
              eq(cf['NoValue'].get('option-without-value', False), None)
              eq(cf['NoValue'].get('option-without-value', fallback=False), None)
              eq(cf['NoValue'].get('no-such-option-without-value', False), False)
              eq(cf['NoValue'].get('no-such-option-without-value',
                        fallback=False), False)
  
          # Make sure the right things happen for remove_section() and
          # remove_option(); added to include check for SourceForge bug #123324.
  
          cf[self.default_section]['this_value'] = '1'
          cf[self.default_section]['that_value'] = '2'
  
          # API access
          self.assertTrue(cf.remove_section('Spaces'))
          self.assertFalse(cf.has_option('Spaces', 'key with spaces'))
          self.assertFalse(cf.remove_section('Spaces'))
          self.assertFalse(cf.remove_section(self.default_section))
          self.assertTrue(cf.remove_option('Foo Bar', 'foo'),
                          "remove_option() failed to report existence of option")
          self.assertFalse(cf.has_option('Foo Bar', 'foo'),
                      "remove_option() failed to remove option")
          self.assertFalse(cf.remove_option('Foo Bar', 'foo'),
                      "remove_option() failed to report non-existence of option"
                      " that was removed")
          self.assertTrue(cf.has_option('Foo Bar', 'this_value'))
          self.assertFalse(cf.remove_option('Foo Bar', 'this_value'))
          self.assertTrue(cf.remove_option(self.default_section, 'this_value'))
          self.assertFalse(cf.has_option('Foo Bar', 'this_value'))
          self.assertFalse(cf.remove_option(self.default_section, 'this_value'))
  
          with self.assertRaises(configparser.NoSectionError) as cm:
              cf.remove_option('No Such Section', 'foo')
          self.assertEqual(cm.exception.args, ('No Such Section',))
  
          eq(cf.get('Long Line', 'foo'),
             'this line is much, much longer than my editor\nlikes it.')
  
          # mapping access
          del cf['Types']
          self.assertFalse('Types' in cf)
          with self.assertRaises(KeyError):
              del cf['Types']
          with self.assertRaises(ValueError):
              del cf[self.default_section]
          del cf['Spacey Bar']['foo']
          self.assertFalse('foo' in cf['Spacey Bar'])
          with self.assertRaises(KeyError):
              del cf['Spacey Bar']['foo']
          self.assertTrue('that_value' in cf['Spacey Bar'])
          with self.assertRaises(KeyError):
              del cf['Spacey Bar']['that_value']
          del cf[self.default_section]['that_value']
          self.assertFalse('that_value' in cf['Spacey Bar'])
          with self.assertRaises(KeyError):
              del cf[self.default_section]['that_value']
          with self.assertRaises(KeyError):
              del cf['No Such Section']['foo']
  
          # Don't add new asserts below in this method as most of the options
          # and sections are now removed.
  
      def test_basic(self):
          config_string = """\
  [Foo Bar]
  foo{0[0]}bar1
  [Spacey Bar]
  foo {0[0]} bar2
  [Spacey Bar From The Beginning]
    foo {0[0]} bar3
    baz {0[0]} qwe
  [Commented Bar]
  foo{0[1]} bar4 {1[1]} comment
  baz{0[0]}qwe {1[0]}another one
  [Long Line]
  foo{0[1]} this line is much, much longer than my editor
     likes it.
  [Section\\with$weird%characters[\t]
  [Internationalized Stuff]
  foo[bg]{0[1]} Bulgarian
  foo{0[0]}Default
  foo[en]{0[0]}English
  foo[de]{0[0]}Deutsch
  [Spaces]
  key with spaces {0[1]} value
  another with spaces {0[0]} splat!
  [Types]
  int {0[1]} 42
  float {0[0]} 0.44
  boolean {0[0]} NO
  123 {0[1]} strange but acceptable
  """.format(self.delimiters, self.comment_prefixes)
          if self.allow_no_value:
              config_string += (
                  "[NoValue]\n"
                  "option-without-value\n"
                  )
          cf = self.fromstring(config_string)
          self.basic_test(cf)
          if self.strict:
              with self.assertRaises(configparser.DuplicateOptionError):
                  cf.read_string(textwrap.dedent("""\
                      [Duplicate Options Here]
                      option {0[0]} with a value
                      option {0[1]} with another value
                  """.format(self.delimiters)))
              with self.assertRaises(configparser.DuplicateSectionError):
                  cf.read_string(textwrap.dedent("""\
                      [And Now For Something]
                      completely different {0[0]} True
                      [And Now For Something]
                      the larch {0[1]} 1
                  """.format(self.delimiters)))
          else:
              cf.read_string(textwrap.dedent("""\
                  [Duplicate Options Here]
                  option {0[0]} with a value
                  option {0[1]} with another value
              """.format(self.delimiters)))
  
              cf.read_string(textwrap.dedent("""\
                  [And Now For Something]
                  completely different {0[0]} True
                  [And Now For Something]
                  the larch {0[1]} 1
              """.format(self.delimiters)))
  
      def test_basic_from_dict(self):
          config = {
              "Foo Bar": {
                  "foo": "bar1",
              },
              "Spacey Bar": {
                  "foo": "bar2",
              },
              "Spacey Bar From The Beginning": {
                  "foo": "bar3",
                  "baz": "qwe",
              },
              "Commented Bar": {
                  "foo": "bar4",
                  "baz": "qwe",
              },
              "Long Line": {
                  "foo": "this line is much, much longer than my editor\nlikes "
                         "it.",
              },
              "Section\\with$weird%characters[\t": {
              },
              "Internationalized Stuff": {
                  "foo[bg]": "Bulgarian",
                  "foo": "Default",
                  "foo[en]": "English",
                  "foo[de]": "Deutsch",
              },
              "Spaces": {
                  "key with spaces": "value",
                  "another with spaces": "splat!",
              },
              "Types": {
                  "int": 42,
                  "float": 0.44,
                  "boolean": False,
                  123: "strange but acceptable",
              },
          }
          if self.allow_no_value:
              config.update({
                  "NoValue": {
                      "option-without-value": None,
                  }
              })
          cf = self.newconfig()
          cf.read_dict(config)
          self.basic_test(cf)
          if self.strict:
              with self.assertRaises(configparser.DuplicateSectionError):
                  cf.read_dict({
                      '1': {'key': 'value'},
                      1: {'key2': 'value2'},
                  })
              with self.assertRaises(configparser.DuplicateOptionError):
                  cf.read_dict({
                      "Duplicate Options Here": {
                          'option': 'with a value',
                          'OPTION': 'with another value',
                      },
                  })
          else:
              cf.read_dict({
                  'section': {'key': 'value'},
                  'SECTION': {'key2': 'value2'},
              })
              cf.read_dict({
                  "Duplicate Options Here": {
                      'option': 'with a value',
                      'OPTION': 'with another value',
                  },
              })
  
      def test_case_sensitivity(self):
          cf = self.newconfig()
          cf.add_section("A")
          cf.add_section("a")
          cf.add_section("B")
          L = cf.sections()
          L.sort()
          eq = self.assertEqual
          eq(L, ["A", "B", "a"])
          cf.set("a", "B", "value")
          eq(cf.options("a"), ["b"])
          eq(cf.get("a", "b"), "value",
             "could not locate option, expecting case-insensitive option names")
          with self.assertRaises(configparser.NoSectionError):
              # section names are case-sensitive
              cf.set("b", "A", "value")
          self.assertTrue(cf.has_option("a", "b"))
          self.assertFalse(cf.has_option("b", "b"))
          cf.set("A", "A-B", "A-B value")
          for opt in ("a-b", "A-b", "a-B", "A-B"):
              self.assertTrue(
                  cf.has_option("A", opt),
                  "has_option() returned false for option which should exist")
          eq(cf.options("A"), ["a-b"])
          eq(cf.options("a"), ["b"])
          cf.remove_option("a", "B")
          eq(cf.options("a"), [])
  
          # SF bug #432369:
          cf = self.fromstring(
              "[MySection]\nOption{} first line   \n\tsecond line   \n".format(
                  self.delimiters[0]))
          eq(cf.options("MySection"), ["option"])
          eq(cf.get("MySection", "Option"), "first line\nsecond line")
  
          # SF bug #561822:
          cf = self.fromstring("[section]\n"
                               "nekey{}nevalue\n".format(self.delimiters[0]),
                               defaults={"key":"value"})
          self.assertTrue(cf.has_option("section", "Key"))
  
  
      def test_case_sensitivity_mapping_access(self):
          cf = self.newconfig()
          cf["A"] = {}
          cf["a"] = {"B": "value"}
          cf["B"] = {}
          L = [section for section in cf]
          L.sort()
          eq = self.assertEqual
          elem_eq = self.assertCountEqual
          eq(L, sorted(["A", "B", self.default_section, "a"]))
          eq(cf["a"].keys(), {"b"})
          eq(cf["a"]["b"], "value",
             "could not locate option, expecting case-insensitive option names")
          with self.assertRaises(KeyError):
              # section names are case-sensitive
              cf["b"]["A"] = "value"
          self.assertTrue("b" in cf["a"])
          cf["A"]["A-B"] = "A-B value"
          for opt in ("a-b", "A-b", "a-B", "A-B"):
              self.assertTrue(
                  opt in cf["A"],
                  "has_option() returned false for option which should exist")
          eq(cf["A"].keys(), {"a-b"})
          eq(cf["a"].keys(), {"b"})
          del cf["a"]["B"]
          elem_eq(cf["a"].keys(), {})
  
          # SF bug #432369:
          cf = self.fromstring(
              "[MySection]\nOption{} first line   \n\tsecond line   \n".format(
                  self.delimiters[0]))
          eq(cf["MySection"].keys(), {"option"})
          eq(cf["MySection"]["Option"], "first line\nsecond line")
  
          # SF bug #561822:
          cf = self.fromstring("[section]\n"
                               "nekey{}nevalue\n".format(self.delimiters[0]),
                               defaults={"key":"value"})
          self.assertTrue("Key" in cf["section"])
  
      def test_default_case_sensitivity(self):
          cf = self.newconfig({"foo": "Bar"})
          self.assertEqual(
              cf.get(self.default_section, "Foo"), "Bar",
              "could not locate option, expecting case-insensitive option names")
          cf = self.newconfig({"Foo": "Bar"})
          self.assertEqual(
              cf.get(self.default_section, "Foo"), "Bar",
              "could not locate option, expecting case-insensitive defaults")
  
      @unittest.skipIf(os.name == "nt", "TODO: RUSTPYTHON, universal newlines")
      def test_parse_errors(self):
          cf = self.newconfig()
          self.parse_error(cf, configparser.ParsingError,
                           "[Foo]\n"
                           "{}val-without-opt-name\n".format(self.delimiters[0]))
          self.parse_error(cf, configparser.ParsingError,
                           "[Foo]\n"
                           "{}val-without-opt-name\n".format(self.delimiters[1]))
          e = self.parse_error(cf, configparser.MissingSectionHeaderError,
                               "No Section!\n")
          self.assertEqual(e.args, ('<???>', 1, "No Section!\n"))
          if not self.allow_no_value:
              e = self.parse_error(cf, configparser.ParsingError,
                                  "[Foo]\n  wrong-indent\n")
              self.assertEqual(e.args, ('<???>',))
              # read_file on a real file
              tricky = support.findfile("cfgparser.3")
              if self.delimiters[0] == '=':
                  error = configparser.ParsingError
                  expected = (tricky,)
              else:
                  error = configparser.MissingSectionHeaderError
                  expected = (tricky, 1,
                              '  # INI with as many tricky parts as possible\n')
              with open(tricky, encoding='utf-8') as f:
                  e = self.parse_error(cf, error, f)
              self.assertEqual(e.args, expected)
  
      def parse_error(self, cf, exc, src):
          if hasattr(src, 'readline'):
              sio = src
          else:
              sio = io.StringIO(src)
          with self.assertRaises(exc) as cm:
              cf.read_file(sio)
          return cm.exception
  
      def test_query_errors(self):
          cf = self.newconfig()
          self.assertEqual(cf.sections(), [],
                           "new ConfigParser should have no defined sections")
          self.assertFalse(cf.has_section("Foo"),
                           "new ConfigParser should have no acknowledged "
                           "sections")
          with self.assertRaises(configparser.NoSectionError):
              cf.options("Foo")
          with self.assertRaises(configparser.NoSectionError):
              cf.set("foo", "bar", "value")
          e = self.get_error(cf, configparser.NoSectionError, "foo", "bar")
          self.assertEqual(e.args, ("foo",))
          cf.add_section("foo")
          e = self.get_error(cf, configparser.NoOptionError, "foo", "bar")
          self.assertEqual(e.args, ("bar", "foo"))
  
      def get_error(self, cf, exc, section, option):
          try:
              cf.get(section, option)
          except exc as e:
              return e
          else:
              self.fail("expected exception type %s.%s"
                        % (exc.__module__, exc.__qualname__))
  
      def test_boolean(self):
          cf = self.fromstring(
              "[BOOLTEST]\n"
              "T1{equals}1\n"
              "T2{equals}TRUE\n"
              "T3{equals}True\n"
              "T4{equals}oN\n"
              "T5{equals}yes\n"
              "F1{equals}0\n"
              "F2{equals}FALSE\n"
              "F3{equals}False\n"
              "F4{equals}oFF\n"
              "F5{equals}nO\n"
              "E1{equals}2\n"
              "E2{equals}foo\n"
              "E3{equals}-1\n"
              "E4{equals}0.1\n"
              "E5{equals}FALSE AND MORE".format(equals=self.delimiters[0])
              )
          for x in range(1, 5):
              self.assertTrue(cf.getboolean('BOOLTEST', 't%d' % x))
              self.assertFalse(cf.getboolean('BOOLTEST', 'f%d' % x))
              self.assertRaises(ValueError,
                                cf.getboolean, 'BOOLTEST', 'e%d' % x)
  
      def test_weird_errors(self):
          cf = self.newconfig()
          cf.add_section("Foo")
          with self.assertRaises(configparser.DuplicateSectionError) as cm:
              cf.add_section("Foo")
          e = cm.exception
          self.assertEqual(str(e), "Section 'Foo' already exists")
          self.assertEqual(e.args, ("Foo", None, None))
  
          if self.strict:
              with self.assertRaises(configparser.DuplicateSectionError) as cm:
                  cf.read_string(textwrap.dedent("""\
                      [Foo]
                      will this be added{equals}True
                      [Bar]
                      what about this{equals}True
                      [Foo]
                      oops{equals}this won't
                  """.format(equals=self.delimiters[0])), source='<foo-bar>')
              e = cm.exception
              self.assertEqual(str(e), "While reading from '<foo-bar>' "
                                       "[line  5]: section 'Foo' already exists")
              self.assertEqual(e.args, ("Foo", '<foo-bar>', 5))
  
              with self.assertRaises(configparser.DuplicateOptionError) as cm:
                  cf.read_dict({'Bar': {'opt': 'val', 'OPT': 'is really `opt`'}})
              e = cm.exception
              self.assertEqual(str(e), "While reading from '<dict>': option "
                                       "'opt' in section 'Bar' already exists")
              self.assertEqual(e.args, ("Bar", "opt", "<dict>", None))
  
      def test_write(self):
          config_string = (
              "[Long Line]\n"
              "foo{0[0]} this line is much, much longer than my editor\n"
              "   likes it.\n"
              "[{default_section}]\n"
              "foo{0[1]} another very\n"
              " long line\n"
              "[Long Line - With Comments!]\n"
              "test {0[1]} we        {comment} can\n"
              "            also      {comment} place\n"
              "            comments  {comment} in\n"
              "            multiline {comment} values"
              "\n".format(self.delimiters, comment=self.comment_prefixes[0],
                          default_section=self.default_section)
              )
          if self.allow_no_value:
              config_string += (
              "[Valueless]\n"
              "option-without-value\n"
              )
  
          cf = self.fromstring(config_string)
          for space_around_delimiters in (True, False):
              output = io.StringIO()
              cf.write(output, space_around_delimiters=space_around_delimiters)
              delimiter = self.delimiters[0]
              if space_around_delimiters:
                  delimiter = " {} ".format(delimiter)
              expect_string = (
                  "[{default_section}]\n"
                  "foo{equals}another very\n"
                  "\tlong line\n"
                  "\n"
                  "[Long Line]\n"
                  "foo{equals}this line is much, much longer than my editor\n"
                  "\tlikes it.\n"
                  "\n"
                  "[Long Line - With Comments!]\n"
                  "test{equals}we\n"
                  "\talso\n"
                  "\tcomments\n"
                  "\tmultiline\n"
                  "\n".format(equals=delimiter,
                              default_section=self.default_section)
                  )
              if self.allow_no_value:
                  expect_string += (
                      "[Valueless]\n"
                      "option-without-value\n"
                      "\n"
                      )
              self.assertEqual(output.getvalue(), expect_string)
  
      def test_set_string_types(self):
          cf = self.fromstring("[sect]\n"
                               "option1{eq}foo\n".format(eq=self.delimiters[0]))
          # Check that we don't get an exception when setting values in
          # an existing section using strings:
          class mystr(str):
              pass
          cf.set("sect", "option1", "splat")
          cf.set("sect", "option1", mystr("splat"))
          cf.set("sect", "option2", "splat")
          cf.set("sect", "option2", mystr("splat"))
          cf.set("sect", "option1", "splat")
          cf.set("sect", "option2", "splat")
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_read_returns_file_list(self):
          if self.delimiters[0] != '=':
              self.skipTest('incompatible format')
          file1 = support.findfile("cfgparser.1")
          # check when we pass a mix of readable and non-readable files:
          cf = self.newconfig()
          parsed_files = cf.read([file1, "nonexistent-file"])
          self.assertEqual(parsed_files, [file1])
          self.assertEqual(cf.get("Foo Bar", "foo"), "newbar")
          # check when we pass only a filename:
          cf = self.newconfig()
          parsed_files = cf.read(file1)
          self.assertEqual(parsed_files, [file1])
          self.assertEqual(cf.get("Foo Bar", "foo"), "newbar")
          # check when we pass only a Path object:
          cf = self.newconfig()
          parsed_files = cf.read(pathlib.Path(file1))
          self.assertEqual(parsed_files, [file1])
          self.assertEqual(cf.get("Foo Bar", "foo"), "newbar")
          # check when we passed both a filename and a Path object:
          cf = self.newconfig()
          parsed_files = cf.read([pathlib.Path(file1), file1])
          self.assertEqual(parsed_files, [file1, file1])
          self.assertEqual(cf.get("Foo Bar", "foo"), "newbar")
          # check when we pass only missing files:
          cf = self.newconfig()
          parsed_files = cf.read(["nonexistent-file"])
          self.assertEqual(parsed_files, [])
          # check when we pass no files:
          cf = self.newconfig()
          parsed_files = cf.read([])
          self.assertEqual(parsed_files, [])
  
      @unittest.skip("TODO: RUSTPYTHON, suspected to make CI hang")
      def test_read_returns_file_list_with_bytestring_path(self):
          if self.delimiters[0] != '=':
              self.skipTest('incompatible format')
          file1_bytestring = support.findfile("cfgparser.1").encode()
          # check when passing an existing bytestring path
          cf = self.newconfig()
          parsed_files = cf.read(file1_bytestring)
          self.assertEqual(parsed_files, [file1_bytestring])
          # check when passing an non-existing bytestring path
          cf = self.newconfig()
          parsed_files = cf.read(b'nonexistent-file')
          self.assertEqual(parsed_files, [])
          # check when passing both an existing and non-existing bytestring path
          cf = self.newconfig()
          parsed_files = cf.read([file1_bytestring, b'nonexistent-file'])
          self.assertEqual(parsed_files, [file1_bytestring])
  
      # shared by subclasses
      def get_interpolation_config(self):
          return self.fromstring(
              "[Foo]\n"
              "bar{equals}something %(with1)s interpolation (1 step)\n"
              "bar9{equals}something %(with9)s lots of interpolation (9 steps)\n"
              "bar10{equals}something %(with10)s lots of interpolation (10 steps)\n"
              "bar11{equals}something %(with11)s lots of interpolation (11 steps)\n"
              "with11{equals}%(with10)s\n"
              "with10{equals}%(with9)s\n"
              "with9{equals}%(with8)s\n"
              "with8{equals}%(With7)s\n"
              "with7{equals}%(WITH6)s\n"
              "with6{equals}%(with5)s\n"
              "With5{equals}%(with4)s\n"
              "WITH4{equals}%(with3)s\n"
              "with3{equals}%(with2)s\n"
              "with2{equals}%(with1)s\n"
              "with1{equals}with\n"
              "\n"
              "[Mutual Recursion]\n"
              "foo{equals}%(bar)s\n"
              "bar{equals}%(foo)s\n"
              "\n"
              "[Interpolation Error]\n"
              # no definition for 'reference'
              "name{equals}%(reference)s\n".format(equals=self.delimiters[0]))
  
      def check_items_config(self, expected):
          cf = self.fromstring("""
              [section]
              name {0[0]} %(value)s
              key{0[1]} |%(name)s|
              getdefault{0[1]} |%(default)s|
          """.format(self.delimiters), defaults={"default": "<default>"})
          L = list(cf.items("section", vars={'value': 'value'}))
          L.sort()
          self.assertEqual(L, expected)
          with self.assertRaises(configparser.NoSectionError):
              cf.items("no such section")
  
      def test_popitem(self):
          cf = self.fromstring("""
              [section1]
              name1 {0[0]} value1
              [section2]
              name2 {0[0]} value2
              [section3]
              name3 {0[0]} value3
          """.format(self.delimiters), defaults={"default": "<default>"})
          self.assertEqual(cf.popitem()[0], 'section1')
          self.assertEqual(cf.popitem()[0], 'section2')
          self.assertEqual(cf.popitem()[0], 'section3')
          with self.assertRaises(KeyError):
              cf.popitem()
  
      def test_clear(self):
          cf = self.newconfig({"foo": "Bar"})
          self.assertEqual(
              cf.get(self.default_section, "Foo"), "Bar",
              "could not locate option, expecting case-insensitive option names")
          cf['zing'] = {'option1': 'value1', 'option2': 'value2'}
          self.assertEqual(cf.sections(), ['zing'])
          self.assertEqual(set(cf['zing'].keys()), {'option1', 'option2', 'foo'})
          cf.clear()
          self.assertEqual(set(cf.sections()), set())
          self.assertEqual(set(cf[self.default_section].keys()), {'foo'})
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_setitem(self):
          cf = self.fromstring("""
              [section1]
              name1 {0[0]} value1
              [section2]
              name2 {0[0]} value2
              [section3]
              name3 {0[0]} value3
          """.format(self.delimiters), defaults={"nameD": "valueD"})
          self.assertEqual(set(cf['section1'].keys()), {'name1', 'named'})
          self.assertEqual(set(cf['section2'].keys()), {'name2', 'named'})
          self.assertEqual(set(cf['section3'].keys()), {'name3', 'named'})
          self.assertEqual(cf['section1']['name1'], 'value1')
          self.assertEqual(cf['section2']['name2'], 'value2')
          self.assertEqual(cf['section3']['name3'], 'value3')
          self.assertEqual(cf.sections(), ['section1', 'section2', 'section3'])
          cf['section2'] = {'name22': 'value22'}
          self.assertEqual(set(cf['section2'].keys()), {'name22', 'named'})
          self.assertEqual(cf['section2']['name22'], 'value22')
          self.assertNotIn('name2', cf['section2'])
          self.assertEqual(cf.sections(), ['section1', 'section2', 'section3'])
          cf['section3'] = {}
          self.assertEqual(set(cf['section3'].keys()), {'named'})
          self.assertNotIn('name3', cf['section3'])
          self.assertEqual(cf.sections(), ['section1', 'section2', 'section3'])
          # For bpo-32108, assigning default_section to itself.
          cf[self.default_section] = cf[self.default_section]
          self.assertNotEqual(set(cf[self.default_section].keys()), set())
          cf[self.default_section] = {}
          self.assertEqual(set(cf[self.default_section].keys()), set())
          self.assertEqual(set(cf['section1'].keys()), {'name1'})
          self.assertEqual(set(cf['section2'].keys()), {'name22'})
          self.assertEqual(set(cf['section3'].keys()), set())
          self.assertEqual(cf.sections(), ['section1', 'section2', 'section3'])
          # For bpo-32108, assigning section to itself.
          cf['section2'] = cf['section2']
          self.assertEqual(set(cf['section2'].keys()), {'name22'})
  
      def test_invalid_multiline_value(self):
          if self.allow_no_value:
              self.skipTest('if no_value is allowed, ParsingError is not raised')
  
          invalid = textwrap.dedent("""\
              [DEFAULT]
              test {0} test
              invalid""".format(self.delimiters[0])
          )
          cf = self.newconfig()
          with self.assertRaises(configparser.ParsingError):
              cf.read_string(invalid)
          self.assertEqual(cf.get('DEFAULT', 'test'), 'test')
          self.assertEqual(cf['DEFAULT']['test'], 'test')
  
  
  class StrictTestCase(BasicTestCase, unittest.TestCase):
      config_class = configparser.RawConfigParser
      strict = True
  
  
  class ConfigParserTestCase(BasicTestCase, unittest.TestCase):
      config_class = configparser.ConfigParser
  
      def test_interpolation(self):
          cf = self.get_interpolation_config()
          eq = self.assertEqual
          eq(cf.get("Foo", "bar"), "something with interpolation (1 step)")
          eq(cf.get("Foo", "bar9"),
             "something with lots of interpolation (9 steps)")
          eq(cf.get("Foo", "bar10"),
             "something with lots of interpolation (10 steps)")
          e = self.get_error(cf, configparser.InterpolationDepthError, "Foo", "bar11")
          if self.interpolation == configparser._UNSET:
              self.assertEqual(e.args, ("bar11", "Foo",
                  "something %(with11)s lots of interpolation (11 steps)"))
          elif isinstance(self.interpolation, configparser.LegacyInterpolation):
              self.assertEqual(e.args, ("bar11", "Foo",
                  "something %(with11)s lots of interpolation (11 steps)"))
  
      def test_interpolation_missing_value(self):
          cf = self.get_interpolation_config()
          e = self.get_error(cf, configparser.InterpolationMissingOptionError,
                             "Interpolation Error", "name")
          self.assertEqual(e.reference, "reference")
          self.assertEqual(e.section, "Interpolation Error")
          self.assertEqual(e.option, "name")
          if self.interpolation == configparser._UNSET:
              self.assertEqual(e.args, ('name', 'Interpolation Error',
                                      '%(reference)s', 'reference'))
          elif isinstance(self.interpolation, configparser.LegacyInterpolation):
              self.assertEqual(e.args, ('name', 'Interpolation Error',
                                      '%(reference)s', 'reference'))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_items(self):
          self.check_items_config([('default', '<default>'),
                                   ('getdefault', '|<default>|'),
                                   ('key', '|value|'),
                                   ('name', 'value')])
  
      def test_safe_interpolation(self):
          # See http://www.python.org/sf/511737
          cf = self.fromstring("[section]\n"
                               "option1{eq}xxx\n"
                               "option2{eq}%(option1)s/xxx\n"
                               "ok{eq}%(option1)s/%%s\n"
                               "not_ok{eq}%(option2)s/%%s".format(
                                   eq=self.delimiters[0]))
          self.assertEqual(cf.get("section", "ok"), "xxx/%s")
          if self.interpolation == configparser._UNSET:
              self.assertEqual(cf.get("section", "not_ok"), "xxx/xxx/%s")
          elif isinstance(self.interpolation, configparser.LegacyInterpolation):
              with self.assertRaises(TypeError):
                  cf.get("section", "not_ok")
  
      def test_set_malformatted_interpolation(self):
          cf = self.fromstring("[sect]\n"
                               "option1{eq}foo\n".format(eq=self.delimiters[0]))
  
          self.assertEqual(cf.get('sect', "option1"), "foo")
  
          self.assertRaises(ValueError, cf.set, "sect", "option1", "%foo")
          self.assertRaises(ValueError, cf.set, "sect", "option1", "foo%")
          self.assertRaises(ValueError, cf.set, "sect", "option1", "f%oo")
  
          self.assertEqual(cf.get('sect', "option1"), "foo")
  
          # bug #5741: double percents are *not* malformed
          cf.set("sect", "option2", "foo%%bar")
          self.assertEqual(cf.get("sect", "option2"), "foo%bar")
  
      def test_set_nonstring_types(self):
          cf = self.fromstring("[sect]\n"
                               "option1{eq}foo\n".format(eq=self.delimiters[0]))
          # Check that we get a TypeError when setting non-string values
          # in an existing section:
          self.assertRaises(TypeError, cf.set, "sect", "option1", 1)
          self.assertRaises(TypeError, cf.set, "sect", "option1", 1.0)
          self.assertRaises(TypeError, cf.set, "sect", "option1", object())
          self.assertRaises(TypeError, cf.set, "sect", "option2", 1)
          self.assertRaises(TypeError, cf.set, "sect", "option2", 1.0)
          self.assertRaises(TypeError, cf.set, "sect", "option2", object())
          self.assertRaises(TypeError, cf.set, "sect", 123, "invalid opt name!")
          self.assertRaises(TypeError, cf.add_section, 123)
  
      def test_add_section_default(self):
          cf = self.newconfig()
          self.assertRaises(ValueError, cf.add_section, self.default_section)
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_defaults_keyword(self):
          """bpo-23835 fix for ConfigParser"""
          cf = self.newconfig(defaults={1: 2.4})
          self.assertEqual(cf[self.default_section]['1'], '2.4')
          self.assertAlmostEqual(cf[self.default_section].getfloat('1'), 2.4)
          cf = self.newconfig(defaults={"A": 5.2})
          self.assertEqual(cf[self.default_section]['a'], '5.2')
          self.assertAlmostEqual(cf[self.default_section].getfloat('a'), 5.2)
  
  
  class ConfigParserTestCaseNoInterpolation(BasicTestCase, unittest.TestCase):
      config_class = configparser.ConfigParser
      interpolation = None
      ini = textwrap.dedent("""
          [numbers]
          one = 1
          two = %(one)s * 2
          three = ${common:one} * 3
  
          [hexen]
          sixteen = ${numbers:two} * 8
      """).strip()
  
      def assertMatchesIni(self, cf):
          self.assertEqual(cf['numbers']['one'], '1')
          self.assertEqual(cf['numbers']['two'], '%(one)s * 2')
          self.assertEqual(cf['numbers']['three'], '${common:one} * 3')
          self.assertEqual(cf['hexen']['sixteen'], '${numbers:two} * 8')
  
      def test_no_interpolation(self):
          cf = self.fromstring(self.ini)
          self.assertMatchesIni(cf)
  
      def test_empty_case(self):
          cf = self.newconfig()
          self.assertIsNone(cf.read_string(""))
  
      def test_none_as_default_interpolation(self):
          class CustomConfigParser(configparser.ConfigParser):
              _DEFAULT_INTERPOLATION = None
  
          cf = CustomConfigParser()
          cf.read_string(self.ini)
          self.assertMatchesIni(cf)
  
  
  class ConfigParserTestCaseLegacyInterpolation(ConfigParserTestCase):
      config_class = configparser.ConfigParser
      interpolation = configparser.LegacyInterpolation()
  
      def test_set_malformatted_interpolation(self):
          cf = self.fromstring("[sect]\n"
                               "option1{eq}foo\n".format(eq=self.delimiters[0]))
  
          self.assertEqual(cf.get('sect', "option1"), "foo")
  
          cf.set("sect", "option1", "%foo")
          self.assertEqual(cf.get('sect', "option1"), "%foo")
          cf.set("sect", "option1", "foo%")
          self.assertEqual(cf.get('sect', "option1"), "foo%")
          cf.set("sect", "option1", "f%oo")
          self.assertEqual(cf.get('sect', "option1"), "f%oo")
  
          # bug #5741: double percents are *not* malformed
          cf.set("sect", "option2", "foo%%bar")
          self.assertEqual(cf.get("sect", "option2"), "foo%%bar")
  
  
  class ConfigParserTestCaseNonStandardDelimiters(ConfigParserTestCase):
      delimiters = (':=', '$')
      comment_prefixes = ('//', '"')
      inline_comment_prefixes = ('//', '"')
  
  
  class ConfigParserTestCaseNonStandardDefaultSection(ConfigParserTestCase):
      default_section = 'general'
  
  
  class MultilineValuesTestCase(BasicTestCase, unittest.TestCase):
      config_class = configparser.ConfigParser
      wonderful_spam = ("I'm having spam spam spam spam "
                        "spam spam spam beaked beans spam "
                        "spam spam and spam!").replace(' ', '\t\n')
  
      def setUp(self):
          cf = self.newconfig()
          for i in range(100):
              s = 'section{}'.format(i)
              cf.add_section(s)
              for j in range(10):
                  cf.set(s, 'lovely_spam{}'.format(j), self.wonderful_spam)
          with open(os_helper.TESTFN, 'w') as f:
              cf.write(f)
  
      def tearDown(self):
          os.unlink(os_helper.TESTFN)
  
      def test_dominating_multiline_values(self):
          # We're reading from file because this is where the code changed
          # during performance updates in Python 3.2
          cf_from_file = self.newconfig()
          with open(os_helper.TESTFN) as f:
              cf_from_file.read_file(f)
          self.assertEqual(cf_from_file.get('section8', 'lovely_spam4'),
                           self.wonderful_spam.replace('\t\n', '\n'))
  
  
  class RawConfigParserTestCase(BasicTestCase, unittest.TestCase):
      config_class = configparser.RawConfigParser
  
      def test_interpolation(self):
          cf = self.get_interpolation_config()
          eq = self.assertEqual
          eq(cf.get("Foo", "bar"),
             "something %(with1)s interpolation (1 step)")
          eq(cf.get("Foo", "bar9"),
             "something %(with9)s lots of interpolation (9 steps)")
          eq(cf.get("Foo", "bar10"),
             "something %(with10)s lots of interpolation (10 steps)")
          eq(cf.get("Foo", "bar11"),
             "something %(with11)s lots of interpolation (11 steps)")
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_items(self):
          self.check_items_config([('default', '<default>'),
                                   ('getdefault', '|%(default)s|'),
                                   ('key', '|%(name)s|'),
                                   ('name', '%(value)s')])
  
      def test_set_nonstring_types(self):
          cf = self.newconfig()
          cf.add_section('non-string')
          cf.set('non-string', 'int', 1)
          cf.set('non-string', 'list', [0, 1, 1, 2, 3, 5, 8, 13])
          cf.set('non-string', 'dict', {'pi': 3.14159})
          self.assertEqual(cf.get('non-string', 'int'), 1)
          self.assertEqual(cf.get('non-string', 'list'),
                           [0, 1, 1, 2, 3, 5, 8, 13])
          self.assertEqual(cf.get('non-string', 'dict'), {'pi': 3.14159})
          cf.add_section(123)
          cf.set(123, 'this is sick', True)
          self.assertEqual(cf.get(123, 'this is sick'), True)
          if cf._dict is configparser._default_dict:
              # would not work for SortedDict; only checking for the most common
              # default dictionary (dict)
              cf.optionxform = lambda x: x
              cf.set('non-string', 1, 1)
              self.assertEqual(cf.get('non-string', 1), 1)
  
      def test_defaults_keyword(self):
          """bpo-23835 legacy behavior for RawConfigParser"""
          with self.assertRaises(AttributeError) as ctx:
              self.newconfig(defaults={1: 2.4})
          err = ctx.exception
          self.assertEqual(str(err), "'int' object has no attribute 'lower'")
          cf = self.newconfig(defaults={"A": 5.2})
          self.assertAlmostEqual(cf[self.default_section]['a'], 5.2)
  
  
  class RawConfigParserTestCaseNonStandardDelimiters(RawConfigParserTestCase):
      delimiters = (':=', '$')
      comment_prefixes = ('//', '"')
      inline_comment_prefixes = ('//', '"')
  
  
  class RawConfigParserTestSambaConf(CfgParserTestCaseClass, unittest.TestCase):
      config_class = configparser.RawConfigParser
      comment_prefixes = ('#', ';', '----')
      inline_comment_prefixes = ('//',)
      empty_lines_in_values = False
  
      def test_reading(self):
          smbconf = support.findfile("cfgparser.2")
          # check when we pass a mix of readable and non-readable files:
          cf = self.newconfig()
          parsed_files = cf.read([smbconf, "nonexistent-file"], encoding='utf-8')
          self.assertEqual(parsed_files, [smbconf])
          sections = ['global', 'homes', 'printers',
                      'print$', 'pdf-generator', 'tmp', 'Agustin']
          self.assertEqual(cf.sections(), sections)
          self.assertEqual(cf.get("global", "workgroup"), "MDKGROUP")
          self.assertEqual(cf.getint("global", "max log size"), 50)
          self.assertEqual(cf.get("global", "hosts allow"), "127.")
          self.assertEqual(cf.get("tmp", "echo command"), "cat %s; rm %s")
  
  class ConfigParserTestCaseExtendedInterpolation(BasicTestCase, unittest.TestCase):
      config_class = configparser.ConfigParser
      interpolation = configparser.ExtendedInterpolation()
      default_section = 'common'
      strict = True
  
      def fromstring(self, string, defaults=None, optionxform=None):
          cf = self.newconfig(defaults)
          if optionxform:
              cf.optionxform = optionxform
          cf.read_string(string)
          return cf
  
      def test_extended_interpolation(self):
          cf = self.fromstring(textwrap.dedent("""
              [common]
              favourite Beatle = Paul
              favourite color = green
  
              [tom]
              favourite band = ${favourite color} day
              favourite pope = John ${favourite Beatle} II
              sequel = ${favourite pope}I
  
              [ambv]
              favourite Beatle = George
              son of Edward VII = ${favourite Beatle} V
              son of George V = ${son of Edward VII}I
  
              [stanley]
              favourite Beatle = ${ambv:favourite Beatle}
              favourite pope = ${tom:favourite pope}
              favourite color = black
              favourite state of mind = paranoid
              favourite movie = soylent ${common:favourite color}
              favourite song = ${favourite color} sabbath - ${favourite state of mind}
          """).strip())
  
          eq = self.assertEqual
          eq(cf['common']['favourite Beatle'], 'Paul')
          eq(cf['common']['favourite color'], 'green')
          eq(cf['tom']['favourite Beatle'], 'Paul')
          eq(cf['tom']['favourite color'], 'green')
          eq(cf['tom']['favourite band'], 'green day')
          eq(cf['tom']['favourite pope'], 'John Paul II')
          eq(cf['tom']['sequel'], 'John Paul III')
          eq(cf['ambv']['favourite Beatle'], 'George')
          eq(cf['ambv']['favourite color'], 'green')
          eq(cf['ambv']['son of Edward VII'], 'George V')
          eq(cf['ambv']['son of George V'], 'George VI')
          eq(cf['stanley']['favourite Beatle'], 'George')
          eq(cf['stanley']['favourite color'], 'black')
          eq(cf['stanley']['favourite state of mind'], 'paranoid')
          eq(cf['stanley']['favourite movie'], 'soylent green')
          eq(cf['stanley']['favourite pope'], 'John Paul II')
          eq(cf['stanley']['favourite song'],
             'black sabbath - paranoid')
  
      def test_endless_loop(self):
          cf = self.fromstring(textwrap.dedent("""
              [one for you]
              ping = ${one for me:pong}
  
              [one for me]
              pong = ${one for you:ping}
  
              [selfish]
              me = ${me}
          """).strip())
  
          with self.assertRaises(configparser.InterpolationDepthError):
              cf['one for you']['ping']
          with self.assertRaises(configparser.InterpolationDepthError):
              cf['selfish']['me']
  
      def test_strange_options(self):
          cf = self.fromstring("""
              [dollars]
              $var = $$value
              $var2 = ${$var}
              ${sick} = cannot interpolate me
  
              [interpolated]
              $other = ${dollars:$var}
              $trying = ${dollars:${sick}}
          """)
  
          self.assertEqual(cf['dollars']['$var'], '$value')
          self.assertEqual(cf['interpolated']['$other'], '$value')
          self.assertEqual(cf['dollars']['${sick}'], 'cannot interpolate me')
          exception_class = configparser.InterpolationMissingOptionError
          with self.assertRaises(exception_class) as cm:
              cf['interpolated']['$trying']
          self.assertEqual(cm.exception.reference, 'dollars:${sick')
          self.assertEqual(cm.exception.args[2], '${dollars:${sick}}') #rawval
  
      def test_case_sensitivity_basic(self):
          ini = textwrap.dedent("""
              [common]
              optionlower = value
              OptionUpper = Value
  
              [Common]
              optionlower = a better ${common:optionlower}
              OptionUpper = A Better ${common:OptionUpper}
  
              [random]
              foolower = ${common:optionlower} redefined
              FooUpper = ${Common:OptionUpper} Redefined
          """).strip()
  
          cf = self.fromstring(ini)
          eq = self.assertEqual
          eq(cf['common']['optionlower'], 'value')
          eq(cf['common']['OptionUpper'], 'Value')
          eq(cf['Common']['optionlower'], 'a better value')
          eq(cf['Common']['OptionUpper'], 'A Better Value')
          eq(cf['random']['foolower'], 'value redefined')
          eq(cf['random']['FooUpper'], 'A Better Value Redefined')
  
      def test_case_sensitivity_conflicts(self):
          ini = textwrap.dedent("""
              [common]
              option = value
              Option = Value
  
              [Common]
              option = a better ${common:option}
              Option = A Better ${common:Option}
  
              [random]
              foo = ${common:option} redefined
              Foo = ${Common:Option} Redefined
          """).strip()
          with self.assertRaises(configparser.DuplicateOptionError):
              cf = self.fromstring(ini)
  
          # raw options
          cf = self.fromstring(ini, optionxform=lambda opt: opt)
          eq = self.assertEqual
          eq(cf['common']['option'], 'value')
          eq(cf['common']['Option'], 'Value')
          eq(cf['Common']['option'], 'a better value')
          eq(cf['Common']['Option'], 'A Better Value')
          eq(cf['random']['foo'], 'value redefined')
          eq(cf['random']['Foo'], 'A Better Value Redefined')
  
      def test_other_errors(self):
          cf = self.fromstring("""
              [interpolation fail]
              case1 = ${where's the brace
              case2 = ${does_not_exist}
              case3 = ${wrong_section:wrong_value}
              case4 = ${i:like:colon:characters}
              case5 = $100 for Fail No 5!
          """)
  
          with self.assertRaises(configparser.InterpolationSyntaxError):
              cf['interpolation fail']['case1']
          with self.assertRaises(configparser.InterpolationMissingOptionError):
              cf['interpolation fail']['case2']
          with self.assertRaises(configparser.InterpolationMissingOptionError):
              cf['interpolation fail']['case3']
          with self.assertRaises(configparser.InterpolationSyntaxError):
              cf['interpolation fail']['case4']
          with self.assertRaises(configparser.InterpolationSyntaxError):
              cf['interpolation fail']['case5']
          with self.assertRaises(ValueError):
              cf['interpolation fail']['case6'] = "BLACK $ABBATH"
  
  
  class ConfigParserTestCaseNoValue(ConfigParserTestCase):
      allow_no_value = True
  
  
  class ConfigParserTestCaseTrickyFile(CfgParserTestCaseClass, unittest.TestCase):
      config_class = configparser.ConfigParser
      delimiters = {'='}
      comment_prefixes = {'#'}
      allow_no_value = True
  
      def test_cfgparser_dot_3(self):
          tricky = support.findfile("cfgparser.3")
          cf = self.newconfig()
          self.assertEqual(len(cf.read(tricky, encoding='utf-8')), 1)
          self.assertEqual(cf.sections(), ['strange',
                                           'corruption',
                                           'yeah, sections can be '
                                           'indented as well',
                                           'another one!',
                                           'no values here',
                                           'tricky interpolation',
                                           'more interpolation'])
          self.assertEqual(cf.getint(self.default_section, 'go',
                                     vars={'interpolate': '-1'}), -1)
          with self.assertRaises(ValueError):
              # no interpolation will happen
              cf.getint(self.default_section, 'go', raw=True,
                        vars={'interpolate': '-1'})
          self.assertEqual(len(cf.get('strange', 'other').split('\n')), 4)
          self.assertEqual(len(cf.get('corruption', 'value').split('\n')), 10)
          longname = 'yeah, sections can be indented as well'
          self.assertFalse(cf.getboolean(longname, 'are they subsections'))
          self.assertEqual(cf.get(longname, 'lets use some Unicode'), '片仮名')
          self.assertEqual(len(cf.items('another one!')), 5) # 4 in section and
                                                             # `go` from DEFAULT
          with self.assertRaises(configparser.InterpolationMissingOptionError):
              cf.items('no values here')
          self.assertEqual(cf.get('tricky interpolation', 'lets'), 'do this')
          self.assertEqual(cf.get('tricky interpolation', 'lets'),
                           cf.get('tricky interpolation', 'go'))
          self.assertEqual(cf.get('more interpolation', 'lets'), 'go shopping')
  
      def test_unicode_failure(self):
          tricky = support.findfile("cfgparser.3")
          cf = self.newconfig()
          with self.assertRaises(UnicodeDecodeError):
              cf.read(tricky, encoding='ascii')
  
  
  class Issue7005TestCase(unittest.TestCase):
      """Test output when None is set() as a value and allow_no_value == False.
  
      http://bugs.python.org/issue7005
  
      """
  
      expected_output = "[section]\noption = None\n\n"
  
      def prepare(self, config_class):
          # This is the default, but that's the point.
          cp = config_class(allow_no_value=False)
          cp.add_section("section")
          cp.set("section", "option", None)
          sio = io.StringIO()
          cp.write(sio)
          return sio.getvalue()
  
      def test_none_as_value_stringified(self):
          cp = configparser.ConfigParser(allow_no_value=False)
          cp.add_section("section")
          with self.assertRaises(TypeError):
              cp.set("section", "option", None)
  
      def test_none_as_value_stringified_raw(self):
          output = self.prepare(configparser.RawConfigParser)
          self.assertEqual(output, self.expected_output)
  
  
  class SortedTestCase(RawConfigParserTestCase):
      dict_type = SortedDict
  
      def test_sorted(self):
          cf = self.fromstring("[b]\n"
                               "o4=1\n"
                               "o3=2\n"
                               "o2=3\n"
                               "o1=4\n"
                               "[a]\n"
                               "k=v\n")
          output = io.StringIO()
          cf.write(output)
          self.assertEqual(output.getvalue(),
                           "[a]\n"
                           "k = v\n\n"
                           "[b]\n"
                           "o1 = 4\n"
                           "o2 = 3\n"
                           "o3 = 2\n"
                           "o4 = 1\n\n")
  
  
  class CompatibleTestCase(CfgParserTestCaseClass, unittest.TestCase):
      config_class = configparser.RawConfigParser
      comment_prefixes = '#;'
      inline_comment_prefixes = ';'
  
      def test_comment_handling(self):
          config_string = textwrap.dedent("""\
          [Commented Bar]
          baz=qwe ; a comment
          foo: bar # not a comment!
          # but this is a comment
          ; another comment
          quirk: this;is not a comment
          ; a space must precede an inline comment
          """)
          cf = self.fromstring(config_string)
          self.assertEqual(cf.get('Commented Bar', 'foo'),
                           'bar # not a comment!')
          self.assertEqual(cf.get('Commented Bar', 'baz'), 'qwe')
          self.assertEqual(cf.get('Commented Bar', 'quirk'),
                           'this;is not a comment')
  
  class CopyTestCase(BasicTestCase, unittest.TestCase):
      config_class = configparser.ConfigParser
  
      def fromstring(self, string, defaults=None):
          cf = self.newconfig(defaults)
          cf.read_string(string)
          cf_copy = self.newconfig()
          cf_copy.read_dict(cf)
          # we have to clean up option duplicates that appeared because of
          # the magic DEFAULTSECT behaviour.
          for section in cf_copy.values():
              if section.name == self.default_section:
                  continue
              for default, value in cf[self.default_section].items():
                  if section[default] == value:
                      del section[default]
          return cf_copy
  
  
  class FakeFile:
      def __init__(self):
          file_path = support.findfile("cfgparser.1")
          with open(file_path) as f:
              self.lines = f.readlines()
              self.lines.reverse()
  
      def readline(self):
          if len(self.lines):
              return self.lines.pop()
          return ''
  
  
  def readline_generator(f):
      """As advised in Doc/library/configparser.rst."""
      line = f.readline()
      while line:
          yield line
          line = f.readline()
  
  
  class ReadFileTestCase(unittest.TestCase):
      def test_file(self):
          file_paths = [support.findfile("cfgparser.1")]
          try:
              file_paths.append(file_paths[0].encode('utf8'))
          except UnicodeEncodeError:
              pass   # unfortunately we can't test bytes on this path
          for file_path in file_paths:
              parser = configparser.ConfigParser()
              with open(file_path) as f:
                  parser.read_file(f)
              self.assertIn("Foo Bar", parser)
              self.assertIn("foo", parser["Foo Bar"])
              self.assertEqual(parser["Foo Bar"]["foo"], "newbar")
  
      def test_iterable(self):
          lines = textwrap.dedent("""
          [Foo Bar]
          foo=newbar""").strip().split('\n')
          parser = configparser.ConfigParser()
          parser.read_file(lines)
          self.assertIn("Foo Bar", parser)
          self.assertIn("foo", parser["Foo Bar"])
          self.assertEqual(parser["Foo Bar"]["foo"], "newbar")
  
      def test_readline_generator(self):
          """Issue #11670."""
          parser = configparser.ConfigParser()
          with self.assertRaises(TypeError):
              parser.read_file(FakeFile())
          parser.read_file(readline_generator(FakeFile()))
          self.assertIn("Foo Bar", parser)
          self.assertIn("foo", parser["Foo Bar"])
          self.assertEqual(parser["Foo Bar"]["foo"], "newbar")
  
      def test_source_as_bytes(self):
          """Issue #18260."""
          lines = textwrap.dedent("""
          [badbad]
          [badbad]""").strip().split('\n')
          parser = configparser.ConfigParser()
          with self.assertRaises(configparser.DuplicateSectionError) as dse:
              parser.read_file(lines, source=b"badbad")
          self.assertEqual(
              str(dse.exception),
              "While reading from b'badbad' [line  2]: section 'badbad' "
              "already exists"
          )
          lines = textwrap.dedent("""
          [badbad]
          bad = bad
          bad = bad""").strip().split('\n')
          parser = configparser.ConfigParser()
          with self.assertRaises(configparser.DuplicateOptionError) as dse:
              parser.read_file(lines, source=b"badbad")
          self.assertEqual(
              str(dse.exception),
              "While reading from b'badbad' [line  3]: option 'bad' in section "
              "'badbad' already exists"
          )
          lines = textwrap.dedent("""
          [badbad]
          = bad""").strip().split('\n')
          parser = configparser.ConfigParser()
          with self.assertRaises(configparser.ParsingError) as dse:
              parser.read_file(lines, source=b"badbad")
          self.assertEqual(
              str(dse.exception),
              "Source contains parsing errors: b'badbad'\n\t[line  2]: '= bad'"
          )
          lines = textwrap.dedent("""
          [badbad
          bad = bad""").strip().split('\n')
          parser = configparser.ConfigParser()
          with self.assertRaises(configparser.MissingSectionHeaderError) as dse:
              parser.read_file(lines, source=b"badbad")
          self.assertEqual(
              str(dse.exception),
              "File contains no section headers.\nfile: b'badbad', line: 1\n"
              "'[badbad'"
          )
  
  
  class CoverageOneHundredTestCase(unittest.TestCase):
      """Covers edge cases in the codebase."""
  
      def test_duplicate_option_error(self):
          error = configparser.DuplicateOptionError('section', 'option')
          self.assertEqual(error.section, 'section')
          self.assertEqual(error.option, 'option')
          self.assertEqual(error.source, None)
          self.assertEqual(error.lineno, None)
          self.assertEqual(error.args, ('section', 'option', None, None))
          self.assertEqual(str(error), "Option 'option' in section 'section' "
                                       "already exists")
  
      def test_interpolation_depth_error(self):
          error = configparser.InterpolationDepthError('option', 'section',
                                                       'rawval')
          self.assertEqual(error.args, ('option', 'section', 'rawval'))
          self.assertEqual(error.option, 'option')
          self.assertEqual(error.section, 'section')
  
      def test_parsing_error(self):
          with self.assertRaises(ValueError) as cm:
              configparser.ParsingError()
          self.assertEqual(str(cm.exception), "Required argument `source' not "
                                              "given.")
          with self.assertRaises(ValueError) as cm:
              configparser.ParsingError(source='source', filename='filename')
          self.assertEqual(str(cm.exception), "Cannot specify both `filename' "
                                              "and `source'. Use `source'.")
          error = configparser.ParsingError(filename='source')
          self.assertEqual(error.source, 'source')
          with warnings.catch_warnings(record=True) as w:
              warnings.simplefilter("always", DeprecationWarning)
              self.assertEqual(error.filename, 'source')
              error.filename = 'filename'
              self.assertEqual(error.source, 'filename')
          for warning in w:
              self.assertTrue(warning.category is DeprecationWarning)
  
      def test_interpolation_validation(self):
          parser = configparser.ConfigParser()
          parser.read_string("""
              [section]
              invalid_percent = %
              invalid_reference = %(()
              invalid_variable = %(does_not_exist)s
          """)
          with self.assertRaises(configparser.InterpolationSyntaxError) as cm:
              parser['section']['invalid_percent']
          self.assertEqual(str(cm.exception), "'%' must be followed by '%' or "
                                              "'(', found: '%'")
          with self.assertRaises(configparser.InterpolationSyntaxError) as cm:
              parser['section']['invalid_reference']
          self.assertEqual(str(cm.exception), "bad interpolation variable "
                                              "reference '%(()'")
  
      def test_readfp_deprecation(self):
          sio = io.StringIO("""
          [section]
          option = value
          """)
          parser = configparser.ConfigParser()
          with warnings.catch_warnings(record=True) as w:
              warnings.simplefilter("always", DeprecationWarning)
              parser.readfp(sio, filename='StringIO')
          for warning in w:
              self.assertTrue(warning.category is DeprecationWarning)
          self.assertEqual(len(parser), 2)
          self.assertEqual(parser['section']['option'], 'value')
  
      def test_safeconfigparser_deprecation(self):
          with warnings.catch_warnings(record=True) as w:
              warnings.simplefilter("always", DeprecationWarning)
              parser = configparser.SafeConfigParser()
          for warning in w:
              self.assertTrue(warning.category is DeprecationWarning)
  
      def test_sectionproxy_repr(self):
          parser = configparser.ConfigParser()
          parser.read_string("""
              [section]
              key = value
          """)
          self.assertEqual(repr(parser['section']), '<Section: section>')
  
      def test_inconsistent_converters_state(self):
          parser = configparser.ConfigParser()
          import decimal
          parser.converters['decimal'] = decimal.Decimal
          parser.read_string("""
              [s1]
              one = 1
              [s2]
              two = 2
          """)
          self.assertIn('decimal', parser.converters)
          self.assertEqual(parser.getdecimal('s1', 'one'), 1)
          self.assertEqual(parser.getdecimal('s2', 'two'), 2)
          self.assertEqual(parser['s1'].getdecimal('one'), 1)
          self.assertEqual(parser['s2'].getdecimal('two'), 2)
          del parser.getdecimal
          with self.assertRaises(AttributeError):
              parser.getdecimal('s1', 'one')
          self.assertIn('decimal', parser.converters)
          del parser.converters['decimal']
          self.assertNotIn('decimal', parser.converters)
          with self.assertRaises(AttributeError):
              parser.getdecimal('s1', 'one')
          with self.assertRaises(AttributeError):
              parser['s1'].getdecimal('one')
          with self.assertRaises(AttributeError):
              parser['s2'].getdecimal('two')
  
  
  class ExceptionPicklingTestCase(unittest.TestCase):
      """Tests for issue #13760: ConfigParser exceptions are not picklable."""
  
      # TODO: RUSTPYTHON Exception.__reduce__ missing.
      @unittest.expectedFailure
      def test_error(self):
          import pickle
          e1 = configparser.Error('value')
          for proto in range(pickle.HIGHEST_PROTOCOL + 1):
              pickled = pickle.dumps(e1, proto)
              e2 = pickle.loads(pickled)
              self.assertEqual(e1.message, e2.message)
              self.assertEqual(repr(e1), repr(e2))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_nosectionerror(self):
          import pickle
          e1 = configparser.NoSectionError('section')
          for proto in range(pickle.HIGHEST_PROTOCOL + 1):
              pickled = pickle.dumps(e1, proto)
              e2 = pickle.loads(pickled)
              self.assertEqual(e1.message, e2.message)
              self.assertEqual(e1.args, e2.args)
              self.assertEqual(e1.section, e2.section)
              self.assertEqual(repr(e1), repr(e2))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_nooptionerror(self):
          import pickle
          e1 = configparser.NoOptionError('option', 'section')
          for proto in range(pickle.HIGHEST_PROTOCOL + 1):
              pickled = pickle.dumps(e1, proto)
              e2 = pickle.loads(pickled)
              self.assertEqual(e1.message, e2.message)
              self.assertEqual(e1.args, e2.args)
              self.assertEqual(e1.section, e2.section)
              self.assertEqual(e1.option, e2.option)
              self.assertEqual(repr(e1), repr(e2))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_duplicatesectionerror(self):
          import pickle
          e1 = configparser.DuplicateSectionError('section', 'source', 123)
          for proto in range(pickle.HIGHEST_PROTOCOL + 1):
              pickled = pickle.dumps(e1, proto)
              e2 = pickle.loads(pickled)
              self.assertEqual(e1.message, e2.message)
              self.assertEqual(e1.args, e2.args)
              self.assertEqual(e1.section, e2.section)
              self.assertEqual(e1.source, e2.source)
              self.assertEqual(e1.lineno, e2.lineno)
              self.assertEqual(repr(e1), repr(e2))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_duplicateoptionerror(self):
          import pickle
          e1 = configparser.DuplicateOptionError('section', 'option', 'source',
              123)
          for proto in range(pickle.HIGHEST_PROTOCOL + 1):
              pickled = pickle.dumps(e1, proto)
              e2 = pickle.loads(pickled)
              self.assertEqual(e1.message, e2.message)
              self.assertEqual(e1.args, e2.args)
              self.assertEqual(e1.section, e2.section)
              self.assertEqual(e1.option, e2.option)
              self.assertEqual(e1.source, e2.source)
              self.assertEqual(e1.lineno, e2.lineno)
              self.assertEqual(repr(e1), repr(e2))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_interpolationerror(self):
          import pickle
          e1 = configparser.InterpolationError('option', 'section', 'msg')
          for proto in range(pickle.HIGHEST_PROTOCOL + 1):
              pickled = pickle.dumps(e1, proto)
              e2 = pickle.loads(pickled)
              self.assertEqual(e1.message, e2.message)
              self.assertEqual(e1.args, e2.args)
              self.assertEqual(e1.section, e2.section)
              self.assertEqual(e1.option, e2.option)
              self.assertEqual(repr(e1), repr(e2))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_interpolationmissingoptionerror(self):
          import pickle
          e1 = configparser.InterpolationMissingOptionError('option', 'section',
              'rawval', 'reference')
          for proto in range(pickle.HIGHEST_PROTOCOL + 1):
              pickled = pickle.dumps(e1, proto)
              e2 = pickle.loads(pickled)
              self.assertEqual(e1.message, e2.message)
              self.assertEqual(e1.args, e2.args)
              self.assertEqual(e1.section, e2.section)
              self.assertEqual(e1.option, e2.option)
              self.assertEqual(e1.reference, e2.reference)
              self.assertEqual(repr(e1), repr(e2))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_interpolationsyntaxerror(self):
          import pickle
          e1 = configparser.InterpolationSyntaxError('option', 'section', 'msg')
          for proto in range(pickle.HIGHEST_PROTOCOL + 1):
              pickled = pickle.dumps(e1, proto)
              e2 = pickle.loads(pickled)
              self.assertEqual(e1.message, e2.message)
              self.assertEqual(e1.args, e2.args)
              self.assertEqual(e1.section, e2.section)
              self.assertEqual(e1.option, e2.option)
              self.assertEqual(repr(e1), repr(e2))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_interpolationdeptherror(self):
          import pickle
          e1 = configparser.InterpolationDepthError('option', 'section',
              'rawval')
          for proto in range(pickle.HIGHEST_PROTOCOL + 1):
              pickled = pickle.dumps(e1, proto)
              e2 = pickle.loads(pickled)
              self.assertEqual(e1.message, e2.message)
              self.assertEqual(e1.args, e2.args)
              self.assertEqual(e1.section, e2.section)
              self.assertEqual(e1.option, e2.option)
              self.assertEqual(repr(e1), repr(e2))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_parsingerror(self):
          import pickle
          e1 = configparser.ParsingError('source')
          e1.append(1, 'line1')
          e1.append(2, 'line2')
          e1.append(3, 'line3')
          for proto in range(pickle.HIGHEST_PROTOCOL + 1):
              pickled = pickle.dumps(e1, proto)
              e2 = pickle.loads(pickled)
              self.assertEqual(e1.message, e2.message)
              self.assertEqual(e1.args, e2.args)
              self.assertEqual(e1.source, e2.source)
              self.assertEqual(e1.errors, e2.errors)
              self.assertEqual(repr(e1), repr(e2))
          e1 = configparser.ParsingError(filename='filename')
          e1.append(1, 'line1')
          e1.append(2, 'line2')
          e1.append(3, 'line3')
          for proto in range(pickle.HIGHEST_PROTOCOL + 1):
              pickled = pickle.dumps(e1, proto)
              e2 = pickle.loads(pickled)
              self.assertEqual(e1.message, e2.message)
              self.assertEqual(e1.args, e2.args)
              self.assertEqual(e1.source, e2.source)
              self.assertEqual(e1.errors, e2.errors)
              self.assertEqual(repr(e1), repr(e2))
  
      # TODO: RUSTPYTHON
      @unittest.expectedFailure
      def test_missingsectionheadererror(self):
          import pickle
          e1 = configparser.MissingSectionHeaderError('filename', 123, 'line')
          for proto in range(pickle.HIGHEST_PROTOCOL + 1):
              pickled = pickle.dumps(e1, proto)
              e2 = pickle.loads(pickled)
              self.assertEqual(e1.message, e2.message)
              self.assertEqual(e1.args, e2.args)
              self.assertEqual(e1.line, e2.line)
              self.assertEqual(e1.source, e2.source)
              self.assertEqual(e1.lineno, e2.lineno)
              self.assertEqual(repr(e1), repr(e2))
  
  
  class InlineCommentStrippingTestCase(unittest.TestCase):
      """Tests for issue #14590: ConfigParser doesn't strip inline comment when
      delimiter occurs earlier without preceding space.."""
  
      def test_stripping(self):
          cfg = configparser.ConfigParser(inline_comment_prefixes=(';', '#',
                  '//'))
          cfg.read_string("""
          [section]
          k1 = v1;still v1
          k2 = v2 ;a comment
          k3 = v3 ; also a comment
          k4 = v4;still v4 ;a comment
          k5 = v5;still v5 ; also a comment
          k6 = v6;still v6; and still v6 ;a comment
          k7 = v7;still v7; and still v7 ; also a comment
  
          [multiprefix]
          k1 = v1;still v1 #a comment ; yeah, pretty much
          k2 = v2 // this already is a comment ; continued
          k3 = v3;#//still v3# and still v3 ; a comment
          """)
          s = cfg['section']
          self.assertEqual(s['k1'], 'v1;still v1')
          self.assertEqual(s['k2'], 'v2')
          self.assertEqual(s['k3'], 'v3')
          self.assertEqual(s['k4'], 'v4;still v4')
          self.assertEqual(s['k5'], 'v5;still v5')
          self.assertEqual(s['k6'], 'v6;still v6; and still v6')
          self.assertEqual(s['k7'], 'v7;still v7; and still v7')
          s = cfg['multiprefix']
          self.assertEqual(s['k1'], 'v1;still v1')
          self.assertEqual(s['k2'], 'v2')
          self.assertEqual(s['k3'], 'v3;#//still v3# and still v3')
  
  
  class ExceptionContextTestCase(unittest.TestCase):
      """ Test that implementation details doesn't leak
      through raising exceptions. """
  
      def test_get_basic_interpolation(self):
          parser = configparser.ConfigParser()
          parser.read_string("""
          [Paths]
          home_dir: /Users
          my_dir: %(home_dir1)s/lumberjack
          my_pictures: %(my_dir)s/Pictures
          """)
          cm = self.assertRaises(configparser.InterpolationMissingOptionError)
          with cm:
              parser.get('Paths', 'my_dir')
          self.assertIs(cm.exception.__suppress_context__, True)
  
      def test_get_extended_interpolation(self):
          parser = configparser.ConfigParser(
            interpolation=configparser.ExtendedInterpolation())
          parser.read_string("""
          [Paths]
          home_dir: /Users
          my_dir: ${home_dir1}/lumberjack
          my_pictures: ${my_dir}/Pictures
          """)
          cm = self.assertRaises(configparser.InterpolationMissingOptionError)
          with cm:
              parser.get('Paths', 'my_dir')
          self.assertIs(cm.exception.__suppress_context__, True)
  
      def test_missing_options(self):
          parser = configparser.ConfigParser()
          parser.read_string("""
          [Paths]
          home_dir: /Users
          """)
          with self.assertRaises(configparser.NoSectionError) as cm:
              parser.options('test')
          self.assertIs(cm.exception.__suppress_context__, True)
  
      def test_missing_section(self):
          config = configparser.ConfigParser()
          with self.assertRaises(configparser.NoSectionError) as cm:
              config.set('Section1', 'an_int', '15')
          self.assertIs(cm.exception.__suppress_context__, True)
  
      def test_remove_option(self):
          config = configparser.ConfigParser()
          with self.assertRaises(configparser.NoSectionError) as cm:
              config.remove_option('Section1', 'an_int')
          self.assertIs(cm.exception.__suppress_context__, True)
  
  
  class ConvertersTestCase(BasicTestCase, unittest.TestCase):
      """Introduced in 3.5, issue #18159."""
  
      config_class = configparser.ConfigParser
  
      def newconfig(self, defaults=None):
          instance = super().newconfig(defaults=defaults)
          instance.converters['list'] = lambda v: [e.strip() for e in v.split()
                                                   if e.strip()]
          return instance
  
      def test_converters(self):
          cfg = self.newconfig()
          self.assertIn('boolean', cfg.converters)
          self.assertIn('list', cfg.converters)
          self.assertIsNone(cfg.converters['int'])
          self.assertIsNone(cfg.converters['float'])
          self.assertIsNone(cfg.converters['boolean'])
          self.assertIsNotNone(cfg.converters['list'])
          self.assertEqual(len(cfg.converters), 4)
          with self.assertRaises(ValueError):
              cfg.converters[''] = lambda v: v
          with self.assertRaises(ValueError):
              cfg.converters[None] = lambda v: v
          cfg.read_string("""
          [s]
          str = string
          int = 1
          float = 0.5
          list = a b c d e f g
          bool = yes
          """)
          s = cfg['s']
          self.assertEqual(s['str'], 'string')
          self.assertEqual(s['int'], '1')
          self.assertEqual(s['float'], '0.5')
          self.assertEqual(s['list'], 'a b c d e f g')
          self.assertEqual(s['bool'], 'yes')
          self.assertEqual(cfg.get('s', 'str'), 'string')
          self.assertEqual(cfg.get('s', 'int'), '1')
          self.assertEqual(cfg.get('s', 'float'), '0.5')
          self.assertEqual(cfg.get('s', 'list'), 'a b c d e f g')
          self.assertEqual(cfg.get('s', 'bool'), 'yes')
          self.assertEqual(cfg.get('s', 'str'), 'string')
          self.assertEqual(cfg.getint('s', 'int'), 1)
          self.assertEqual(cfg.getfloat('s', 'float'), 0.5)
          self.assertEqual(cfg.getlist('s', 'list'), ['a', 'b', 'c', 'd',
                                                      'e', 'f', 'g'])
          self.assertEqual(cfg.getboolean('s', 'bool'), True)
          self.assertEqual(s.get('str'), 'string')
          self.assertEqual(s.getint('int'), 1)
          self.assertEqual(s.getfloat('float'), 0.5)
          self.assertEqual(s.getlist('list'), ['a', 'b', 'c', 'd',
                                               'e', 'f', 'g'])
          self.assertEqual(s.getboolean('bool'), True)
          with self.assertRaises(AttributeError):
              cfg.getdecimal('s', 'float')
          with self.assertRaises(AttributeError):
              s.getdecimal('float')
          import decimal
          cfg.converters['decimal'] = decimal.Decimal
          self.assertIn('decimal', cfg.converters)
          self.assertIsNotNone(cfg.converters['decimal'])
          self.assertEqual(len(cfg.converters), 5)
          dec0_5 = decimal.Decimal('0.5')
          self.assertEqual(cfg.getdecimal('s', 'float'), dec0_5)
          self.assertEqual(s.getdecimal('float'), dec0_5)
          del cfg.converters['decimal']
          self.assertNotIn('decimal', cfg.converters)
          self.assertEqual(len(cfg.converters), 4)
          with self.assertRaises(AttributeError):
              cfg.getdecimal('s', 'float')
          with self.assertRaises(AttributeError):
              s.getdecimal('float')
          with self.assertRaises(KeyError):
              del cfg.converters['decimal']
          with self.assertRaises(KeyError):
              del cfg.converters['']
          with self.assertRaises(KeyError):
              del cfg.converters[None]
  
  
  class BlatantOverrideConvertersTestCase(unittest.TestCase):
      """What if somebody overrode a getboolean()? We want to make sure that in
      this case the automatic converters do not kick in."""
  
      config = """
          [one]
          one = false
          two = false
          three = long story short
  
          [two]
          one = false
          two = false
          three = four
      """
  
      def test_converters_at_init(self):
          cfg = configparser.ConfigParser(converters={'len': len})
          cfg.read_string(self.config)
          self._test_len(cfg)
          self.assertIsNotNone(cfg.converters['len'])
  
      def test_inheritance(self):
          class StrangeConfigParser(configparser.ConfigParser):
              gettysburg = 'a historic borough in south central Pennsylvania'
  
              def getboolean(self, section, option, *, raw=False, vars=None,
                          fallback=configparser._UNSET):
                  if section == option:
                      return True
                  return super().getboolean(section, option, raw=raw, vars=vars,
                                            fallback=fallback)
              def getlen(self, section, option, *, raw=False, vars=None,
                         fallback=configparser._UNSET):
                  return self._get_conv(section, option, len, raw=raw, vars=vars,
                                        fallback=fallback)
  
          cfg = StrangeConfigParser()
          cfg.read_string(self.config)
          self._test_len(cfg)
          self.assertIsNone(cfg.converters['len'])
          self.assertTrue(cfg.getboolean('one', 'one'))
          self.assertTrue(cfg.getboolean('two', 'two'))
          self.assertFalse(cfg.getboolean('one', 'two'))
          self.assertFalse(cfg.getboolean('two', 'one'))
          cfg.converters['boolean'] = cfg._convert_to_boolean
          self.assertFalse(cfg.getboolean('one', 'one'))
          self.assertFalse(cfg.getboolean('two', 'two'))
          self.assertFalse(cfg.getboolean('one', 'two'))
          self.assertFalse(cfg.getboolean('two', 'one'))
  
      def _test_len(self, cfg):
          self.assertEqual(len(cfg.converters), 4)
          self.assertIn('boolean', cfg.converters)
          self.assertIn('len', cfg.converters)
          self.assertNotIn('tysburg', cfg.converters)
          self.assertIsNone(cfg.converters['int'])
          self.assertIsNone(cfg.converters['float'])
          self.assertIsNone(cfg.converters['boolean'])
          self.assertEqual(cfg.getlen('one', 'one'), 5)
          self.assertEqual(cfg.getlen('one', 'two'), 5)
          self.assertEqual(cfg.getlen('one', 'three'), 16)
          self.assertEqual(cfg.getlen('two', 'one'), 5)
          self.assertEqual(cfg.getlen('two', 'two'), 5)
          self.assertEqual(cfg.getlen('two', 'three'), 4)
          self.assertEqual(cfg.getlen('two', 'four', fallback=0), 0)
          with self.assertRaises(configparser.NoOptionError):
              cfg.getlen('two', 'four')
          self.assertEqual(cfg['one'].getlen('one'), 5)
          self.assertEqual(cfg['one'].getlen('two'), 5)
          self.assertEqual(cfg['one'].getlen('three'), 16)
          self.assertEqual(cfg['two'].getlen('one'), 5)
          self.assertEqual(cfg['two'].getlen('two'), 5)
          self.assertEqual(cfg['two'].getlen('three'), 4)
          self.assertEqual(cfg['two'].getlen('four', 0), 0)
          self.assertEqual(cfg['two'].getlen('four'), None)
  
      def test_instance_assignment(self):
          cfg = configparser.ConfigParser()
          cfg.getboolean = lambda section, option: True
          cfg.getlen = lambda section, option: len(cfg[section][option])
          cfg.read_string(self.config)
          self.assertEqual(len(cfg.converters), 3)
          self.assertIn('boolean', cfg.converters)
          self.assertNotIn('len', cfg.converters)
          self.assertIsNone(cfg.converters['int'])
          self.assertIsNone(cfg.converters['float'])
          self.assertIsNone(cfg.converters['boolean'])
          self.assertTrue(cfg.getboolean('one', 'one'))
          self.assertTrue(cfg.getboolean('two', 'two'))
          self.assertTrue(cfg.getboolean('one', 'two'))
          self.assertTrue(cfg.getboolean('two', 'one'))
          cfg.converters['boolean'] = cfg._convert_to_boolean
          self.assertFalse(cfg.getboolean('one', 'one'))
          self.assertFalse(cfg.getboolean('two', 'two'))
          self.assertFalse(cfg.getboolean('one', 'two'))
          self.assertFalse(cfg.getboolean('two', 'one'))
          self.assertEqual(cfg.getlen('one', 'one'), 5)
          self.assertEqual(cfg.getlen('one', 'two'), 5)
          self.assertEqual(cfg.getlen('one', 'three'), 16)
          self.assertEqual(cfg.getlen('two', 'one'), 5)
          self.assertEqual(cfg.getlen('two', 'two'), 5)
          self.assertEqual(cfg.getlen('two', 'three'), 4)
          # If a getter impl is assigned straight to the instance, it won't
          # be available on the section proxies.
          with self.assertRaises(AttributeError):
              self.assertEqual(cfg['one'].getlen('one'), 5)
          with self.assertRaises(AttributeError):
              self.assertEqual(cfg['two'].getlen('one'), 5)
  
  
  class MiscTestCase(unittest.TestCase):
      def test__all__(self):
          not_exported = {"Error"}
          support.check__all__(self, configparser, not_exported=not_exported)
  
  
  if __name__ == '__main__':
      unittest.main()
  