def __init__(self, methodName='runTest'):
    """Create an instance of the class that will use the named test
       method when executed. Raises a ValueError if the instance does
       not have a method with the specified name.
    """
    self._testMethodName = methodName
    self._outcome = None
    self._testMethodDoc = 'No test'
    try:
        testMethod = getattr(self, methodName)
    except AttributeError:
        if methodName != 'runTest':
            # we allow instantiation with no explicit method name
            # but not an *incorrect* or missing method name
            raise ValueError("no such test method in %s: %s" %
                  (self.__class__, methodName))
    else:
        self._testMethodDoc = testMethod.__doc__
    self._cleanups = []
    self._subtest = None
    # Map types to custom assertEqual functions that will compare
    # instances of said type in more detail to generate a more useful
    # error message.
    self._type_equality_funcs = {}
    self.addTypeEqualityFunc(dict, 'assertDictEqual')
    self.addTypeEqualityFunc(list, 'assertListEqual')
    self.addTypeEqualityFunc(tuple, 'assertTupleEqual')
    self.addTypeEqualityFunc(set, 'assertSetEqual')
    self.addTypeEqualityFunc(frozenset, 'assertSetEqual')
    self.addTypeEqualityFunc(str, 'assertMultiLineEqual')

def addCleanup(*args, **kwargs):
    """Add a function, with arguments, to be called when the test is
    completed. Functions added are called on a LIFO basis and are
    called after tearDown on test failure or success.
    Cleanup items are called even if setUp fails (unlike tearDown)."""
    if len(args) >= 2:
        self, function, *args = args
    elif not args:
        raise TypeError("descriptor 'addCleanup' of 'TestCase' object "
                        "needs an argument")
    elif 'function' in kwargs:
        function = kwargs.pop('function')
        self, *args = args
        import warnings
        warnings.warn("Passing 'function' as keyword argument is deprecated",
                      DeprecationWarning, stacklevel=2)
    else:
        raise TypeError('addCleanup expected at least 1 positional '
                        'argument, got %d' % (len(args)-1))
    args = tuple(args)
    self._cleanups.append((function, args, kwargs))

def addTypeEqualityFunc(self, typeobj, function):
    """Add a type specific assertEqual style function to compare a type.
    This method is for use by TestCase subclasses that need to register
    their own type equality functions to provide nicer error messages.
    Args:
        typeobj: The data type to call this function on when both values
                are of the same type in assertEqual().
        function: The callable taking two arguments and an optional
                msg= argument that raises self.failureException with a
                useful error message when the two arguments are not equal.
    """
    self._type_equality_funcs[typeobj] = function

def assertAlmostEqual(self, first, second, places=None, msg=None,
                      delta=None):
    """Fail if the two objects are unequal as determined by their
       difference rounded to the given number of decimal places
       (default 7) and comparing to zero, or by comparing that the
       difference between the two objects is more than the given
       delta.
       Note that decimal places (from zero) are usually not the same
       as significant digits (measured from the most significant digit).
       If the two objects compare equal then they will automatically
       compare almost equal.
    """
    if first == second:
        # shortcut
        return
    if delta is not None and places is not None:
        raise TypeError("specify delta or places not both")
    diff = abs(first - second)
    if delta is not None:
        if diff <= delta:
            return
        standardMsg = '%s != %s within %s delta (%s difference)' % (
            safe_repr(first),
            safe_repr(second),
            safe_repr(delta),
            safe_repr(diff))
    else:
        if places is None:
            places = 7
        if round(diff, places) == 0:
            return
        standardMsg = '%s != %s within %r places (%s difference)' % (
            safe_repr(first),
            safe_repr(second),
            places,
            safe_repr(diff))
    msg = self._formatMessage(msg, standardMsg)
    raise self.failureException(msg)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def assertCountEqual(self, first, second, msg=None):
    """Asserts that two iterables have the same elements, the same number of
    times, without regard to order.
        self.assertEqual(Counter(list(first)),
                         Counter(list(second)))
     Example:
        - [0, 1, 1] and [1, 0, 1] compare equal.
        - [0, 0, 1] and [0, 1] compare unequal.
    """
    first_seq, second_seq = list(first), list(second)
    try:
        first = collections.Counter(first_seq)
        second = collections.Counter(second_seq)
    except TypeError:
        # Handle case with unhashable elements
        differences = _count_diff_all_purpose(first_seq, second_seq)
    else:
        if first == second:
            return
        differences = _count_diff_hashable(first_seq, second_seq)
    if differences:
        standardMsg = 'Element counts were not equal:\n'
        lines = ['First has %d, Second has %d:  %r' % diff for diff in differences]
        diffMsg = '\n'.join(lines)
        standardMsg = self._truncateMessage(standardMsg, diffMsg)
        msg = self._formatMessage(msg, standardMsg)
        self.fail(msg)

def assertDictContainsSubset(self, subset, dictionary, msg=None):
    """Checks whether dictionary is a superset of subset."""
    warnings.warn('assertDictContainsSubset is deprecated',
                  DeprecationWarning)
    missing = []
    mismatched = []
    for key, value in subset.items():
        if key not in dictionary:
            missing.append(key)
        elif value != dictionary[key]:
            mismatched.append('%s, expected: %s, actual: %s' %
                              (safe_repr(key), safe_repr(value),
                               safe_repr(dictionary[key])))
    if not (missing or mismatched):
        return
    standardMsg = ''
    if missing:
        standardMsg = 'Missing: %s' % ','.join(safe_repr(m) for m in
                                                missing)
    if mismatched:
        if standardMsg:
            standardMsg += '; '
        standardMsg += 'Mismatched values: %s' % ','.join(mismatched)
    self.fail(self._formatMessage(msg, standardMsg))

def assertDictEqual(self, d1, d2, msg=None):
    self.assertIsInstance(d1, dict, 'First argument is not a dictionary')
    self.assertIsInstance(d2, dict, 'Second argument is not a dictionary')
    if d1 != d2:
        standardMsg = '%s != %s' % _common_shorten_repr(d1, d2)
        diff = ('\n' + '\n'.join(difflib.ndiff(
                       pprint.pformat(d1).splitlines(),
                       pprint.pformat(d2).splitlines())))
        standardMsg = self._truncateMessage(standardMsg, diff)
        self.fail(self._formatMessage(msg, standardMsg))

def assertEqual(self, first, second, msg=None):
    """Fail if the two objects are unequal as determined by the '=='
       operator.
    """
    assertion_func = self._getAssertEqualityFunc(first, second)
    assertion_func(first, second, msg=msg)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def assertFalse(self, expr, msg=None):
    """Check that the expression is false."""
    if expr:
        msg = self._formatMessage(msg, "%s is not false" % safe_repr(expr))
        raise self.failureException(msg)

def assertGreater(self, a, b, msg=None):
    """Just like self.assertTrue(a > b), but with a nicer default message."""
    if not a > b:
        standardMsg = '%s not greater than %s' % (safe_repr(a), safe_repr(b))
        self.fail(self._formatMessage(msg, standardMsg))

def assertGreaterEqual(self, a, b, msg=None):
    """Just like self.assertTrue(a >= b), but with a nicer default message."""
    if not a >= b:
        standardMsg = '%s not greater than or equal to %s' % (safe_repr(a), safe_repr(b))
        self.fail(self._formatMessage(msg, standardMsg))

def assertIn(self, member, container, msg=None):
    """Just like self.assertTrue(a in b), but with a nicer default message."""
    if member not in container:
        standardMsg = '%s not found in %s' % (safe_repr(member),
                                              safe_repr(container))
        self.fail(self._formatMessage(msg, standardMsg))

def assertIs(self, expr1, expr2, msg=None):
    """Just like self.assertTrue(a is b), but with a nicer default message."""
    if expr1 is not expr2:
        standardMsg = '%s is not %s' % (safe_repr(expr1),
                                         safe_repr(expr2))
        self.fail(self._formatMessage(msg, standardMsg))

def assertIsInstance(self, obj, cls, msg=None):
    """Same as self.assertTrue(isinstance(obj, cls)), with a nicer
    default message."""
    if not isinstance(obj, cls):
        standardMsg = '%s is not an instance of %r' % (safe_repr(obj), cls)
        self.fail(self._formatMessage(msg, standardMsg))

def assertIsNone(self, obj, msg=None):
    """Same as self.assertTrue(obj is None), with a nicer default message."""
    if obj is not None:
        standardMsg = '%s is not None' % (safe_repr(obj),)
        self.fail(self._formatMessage(msg, standardMsg))

def assertIsNot(self, expr1, expr2, msg=None):
    """Just like self.assertTrue(a is not b), but with a nicer default message."""
    if expr1 is expr2:
        standardMsg = 'unexpectedly identical: %s' % (safe_repr(expr1),)
        self.fail(self._formatMessage(msg, standardMsg))

def assertIsNotNone(self, obj, msg=None):
    """Included for symmetry with assertIsNone."""
    if obj is None:
        standardMsg = 'unexpectedly None'
        self.fail(self._formatMessage(msg, standardMsg))

def assertLess(self, a, b, msg=None):
    """Just like self.assertTrue(a < b), but with a nicer default message."""
    if not a < b:
        standardMsg = '%s not less than %s' % (safe_repr(a), safe_repr(b))
        self.fail(self._formatMessage(msg, standardMsg))

def assertLessEqual(self, a, b, msg=None):
    """Just like self.assertTrue(a <= b), but with a nicer default message."""
    if not a <= b:
        standardMsg = '%s not less than or equal to %s' % (safe_repr(a), safe_repr(b))
        self.fail(self._formatMessage(msg, standardMsg))

def assertListEqual(self, list1, list2, msg=None):
    """A list-specific equality assertion.
    Args:
        list1: The first list to compare.
        list2: The second list to compare.
        msg: Optional message to use on failure instead of a list of
                differences.
    """
    self.assertSequenceEqual(list1, list2, msg, seq_type=list)

def assertLogs(self, logger=None, level=None):
    """Fail unless a log message of level *level* or higher is emitted
    on *logger_name* or its children.  If omitted, *level* defaults to
    INFO and *logger* defaults to the root logger.
    This method must be used as a context manager, and will yield
    a recording object with two attributes: `output` and `records`.
    At the end of the context manager, the `output` attribute will
    be a list of the matching formatted log messages and the
    `records` attribute will be a list of the corresponding LogRecord
    objects.
    Example::
        with self.assertLogs('foo', level='INFO') as cm:
            logging.getLogger('foo').info('first message')
            logging.getLogger('foo.bar').error('second message')
        self.assertEqual(cm.output, ['INFO:foo:first message',
                                     'ERROR:foo.bar:second message'])
    """
    return _AssertLogsContext(self, logger, level)

def assertMultiLineEqual(self, first, second, msg=None):
    """Assert that two multi-line strings are equal."""
    self.assertIsInstance(first, str, 'First argument is not a string')
    self.assertIsInstance(second, str, 'Second argument is not a string')
    if first != second:
        # don't use difflib if the strings are too long
        if (len(first) > self._diffThreshold or
            len(second) > self._diffThreshold):
            self._baseAssertEqual(first, second, msg)
        firstlines = first.splitlines(keepends=True)
        secondlines = second.splitlines(keepends=True)
        if len(firstlines) == 1 and first.strip('\r\n') == first:
            firstlines = [first + '\n']
            secondlines = [second + '\n']
        standardMsg = '%s != %s' % _common_shorten_repr(first, second)
        diff = '\n' + ''.join(difflib.ndiff(firstlines, secondlines))
        standardMsg = self._truncateMessage(standardMsg, diff)
        self.fail(self._formatMessage(msg, standardMsg))

def assertNotAlmostEqual(self, first, second, places=None, msg=None,
                         delta=None):
    """Fail if the two objects are equal as determined by their
       difference rounded to the given number of decimal places
       (default 7) and comparing to zero, or by comparing that the
       difference between the two objects is less than the given delta.
       Note that decimal places (from zero) are usually not the same
       as significant digits (measured from the most significant digit).
       Objects that are equal automatically fail.
    """
    if delta is not None and places is not None:
        raise TypeError("specify delta or places not both")
    diff = abs(first - second)
    if delta is not None:
        if not (first == second) and diff > delta:
            return
        standardMsg = '%s == %s within %s delta (%s difference)' % (
            safe_repr(first),
            safe_repr(second),
            safe_repr(delta),
            safe_repr(diff))
    else:
        if places is None:
            places = 7
        if not (first == second) and round(diff, places) != 0:
            return
        standardMsg = '%s == %s within %r places' % (safe_repr(first),
                                                     safe_repr(second),
                                                     places)
    msg = self._formatMessage(msg, standardMsg)
    raise self.failureException(msg)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def assertNotEqual(self, first, second, msg=None):
    """Fail if the two objects are equal as determined by the '!='
       operator.
    """
    if not first != second:
        msg = self._formatMessage(msg, '%s == %s' % (safe_repr(first),
                                                      safe_repr(second)))
        raise self.failureException(msg)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def assertNotIn(self, member, container, msg=None):
    """Just like self.assertTrue(a not in b), but with a nicer default message."""
    if member in container:
        standardMsg = '%s unexpectedly found in %s' % (safe_repr(member),
                                                    safe_repr(container))
        self.fail(self._formatMessage(msg, standardMsg))

def assertNotIsInstance(self, obj, cls, msg=None):
    """Included for symmetry with assertIsInstance."""
    if isinstance(obj, cls):
        standardMsg = '%s is an instance of %r' % (safe_repr(obj), cls)
        self.fail(self._formatMessage(msg, standardMsg))

def assertNotRegex(self, text, unexpected_regex, msg=None):
    """Fail the test if the text matches the regular expression."""
    if isinstance(unexpected_regex, (str, bytes)):
        unexpected_regex = re.compile(unexpected_regex)
    match = unexpected_regex.search(text)
    if match:
        standardMsg = 'Regex matched: %r matches %r in %r' % (
            text[match.start() : match.end()],
            unexpected_regex.pattern,
            text)
        # _formatMessage ensures the longMessage option is respected
        msg = self._formatMessage(msg, standardMsg)
        raise self.failureException(msg)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def assertRaises(self, expected_exception, *args, **kwargs):
    """Fail unless an exception of class expected_exception is raised
       by the callable when invoked with specified positional and
       keyword arguments. If a different type of exception is
       raised, it will not be caught, and the test case will be
       deemed to have suffered an error, exactly as for an
       unexpected exception.
       If called with the callable and arguments omitted, will return a
       context object used like this::
            with self.assertRaises(SomeException):
                do_something()
       An optional keyword argument 'msg' can be provided when assertRaises
       is used as a context object.
       The context manager keeps a reference to the exception as
       the 'exception' attribute. This allows you to inspect the
       exception after the assertion::
           with self.assertRaises(SomeException) as cm:
               do_something()
           the_exception = cm.exception
           self.assertEqual(the_exception.error_code, 3)
    """
    context = _AssertRaisesContext(expected_exception, self)
    try:
        return context.handle('assertRaises', args, kwargs)
    finally:
        # bpo-23890: manually break a reference cycle
        context = None

def assertRaisesRegex(self, expected_exception, expected_regex,
                      *args, **kwargs):
    """Asserts that the message in a raised exception matches a regex.
    Args:
        expected_exception: Exception class expected to be raised.
        expected_regex: Regex (re.Pattern object or string) expected
                to be found in error message.
        args: Function to be called and extra positional args.
        kwargs: Extra kwargs.
        msg: Optional message used in case of failure. Can only be used
                when assertRaisesRegex is used as a context manager.
    """
    context = _AssertRaisesContext(expected_exception, self, expected_regex)
    return context.handle('assertRaisesRegex', args, kwargs)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def assertRegex(self, text, expected_regex, msg=None):
    """Fail the test unless the text matches the regular expression."""
    if isinstance(expected_regex, (str, bytes)):
        assert expected_regex, "expected_regex must not be empty."
        expected_regex = re.compile(expected_regex)
    if not expected_regex.search(text):
        standardMsg = "Regex didn't match: %r not found in %r" % (
            expected_regex.pattern, text)
        # _formatMessage ensures the longMessage option is respected
        msg = self._formatMessage(msg, standardMsg)
        raise self.failureException(msg)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def assertSequenceEqual(self, seq1, seq2, msg=None, seq_type=None):
    """An equality assertion for ordered sequences (like lists and tuples).
    For the purposes of this function, a valid ordered sequence type is one
    which can be indexed, has a length, and has an equality operator.
    Args:
        seq1: The first sequence to compare.
        seq2: The second sequence to compare.
        seq_type: The expected datatype of the sequences, or None if no
                datatype should be enforced.
        msg: Optional message to use on failure instead of a list of
                differences.
    """
    if seq_type is not None:
        seq_type_name = seq_type.__name__
        if not isinstance(seq1, seq_type):
            raise self.failureException('First sequence is not a %s: %s'
                                    % (seq_type_name, safe_repr(seq1)))
        if not isinstance(seq2, seq_type):
            raise self.failureException('Second sequence is not a %s: %s'
                                    % (seq_type_name, safe_repr(seq2)))
    else:
        seq_type_name = "sequence"
    differing = None
    try:
        len1 = len(seq1)
    except (TypeError, NotImplementedError):
        differing = 'First %s has no length.    Non-sequence?' % (
                seq_type_name)
    if differing is None:
        try:
            len2 = len(seq2)
        except (TypeError, NotImplementedError):
            differing = 'Second %s has no length.    Non-sequence?' % (
                    seq_type_name)
    if differing is None:
        if seq1 == seq2:
            return
        differing = '%ss differ: %s != %s\n' % (
                (seq_type_name.capitalize(),) +
                _common_shorten_repr(seq1, seq2))
        for i in range(min(len1, len2)):
            try:
                item1 = seq1[i]
            except (TypeError, IndexError, NotImplementedError):
                differing += ('\nUnable to index element %d of first %s\n' %
                             (i, seq_type_name))
                break
            try:
                item2 = seq2[i]
            except (TypeError, IndexError, NotImplementedError):
                differing += ('\nUnable to index element %d of second %s\n' %
                             (i, seq_type_name))
                break
            if item1 != item2:
                differing += ('\nFirst differing element %d:\n%s\n%s\n' %
                             ((i,) + _common_shorten_repr(item1, item2)))
                break
        else:
            if (len1 == len2 and seq_type is None and
                type(seq1) != type(seq2)):
                # The sequences are the same, but have differing types.
                return
        if len1 > len2:
            differing += ('\nFirst %s contains %d additional '
                         'elements.\n' % (seq_type_name, len1 - len2))
            try:
                differing += ('First extra element %d:\n%s\n' %
                              (len2, safe_repr(seq1[len2])))
            except (TypeError, IndexError, NotImplementedError):
                differing += ('Unable to index element %d '
                              'of first %s\n' % (len2, seq_type_name))
        elif len1 < len2:
            differing += ('\nSecond %s contains %d additional '
                         'elements.\n' % (seq_type_name, len2 - len1))
            try:
                differing += ('First extra element %d:\n%s\n' %
                              (len1, safe_repr(seq2[len1])))
            except (TypeError, IndexError, NotImplementedError):
                differing += ('Unable to index element %d '
                              'of second %s\n' % (len1, seq_type_name))
    standardMsg = differing
    diffMsg = '\n' + '\n'.join(
        difflib.ndiff(pprint.pformat(seq1).splitlines(),
                      pprint.pformat(seq2).splitlines()))
    standardMsg = self._truncateMessage(standardMsg, diffMsg)
    msg = self._formatMessage(msg, standardMsg)
    self.fail(msg)

def assertSetEqual(self, set1, set2, msg=None):
    """A set-specific equality assertion.
    Args:
        set1: The first set to compare.
        set2: The second set to compare.
        msg: Optional message to use on failure instead of a list of
                differences.
    assertSetEqual uses ducktyping to support different types of sets, and
    is optimized for sets specifically (parameters must support a
    difference method).
    """
    try:
        difference1 = set1.difference(set2)
    except TypeError as e:
        self.fail('invalid type when attempting set difference: %s' % e)
    except AttributeError as e:
        self.fail('first argument does not support set difference: %s' % e)
    try:
        difference2 = set2.difference(set1)
    except TypeError as e:
        self.fail('invalid type when attempting set difference: %s' % e)
    except AttributeError as e:
        self.fail('second argument does not support set difference: %s' % e)
    if not (difference1 or difference2):
        return
    lines = []
    if difference1:
        lines.append('Items in the first set but not the second:')
        for item in difference1:
            lines.append(repr(item))
    if difference2:
        lines.append('Items in the second set but not the first:')
        for item in difference2:
            lines.append(repr(item))
    standardMsg = '\n'.join(lines)
    self.fail(self._formatMessage(msg, standardMsg))

def assertTrue(self, expr, msg=None):
    """Check that the expression is true."""
    if not expr:
        msg = self._formatMessage(msg, "%s is not true" % safe_repr(expr))
        raise self.failureException(msg)

def assertTupleEqual(self, tuple1, tuple2, msg=None):
    """A tuple-specific equality assertion.
    Args:
        tuple1: The first tuple to compare.
        tuple2: The second tuple to compare.
        msg: Optional message to use on failure instead of a list of
                differences.
    """
    self.assertSequenceEqual(tuple1, tuple2, msg, seq_type=tuple)

def assertWarns(self, expected_warning, *args, **kwargs):
    """Fail unless a warning of class warnClass is triggered
       by the callable when invoked with specified positional and
       keyword arguments.  If a different type of warning is
       triggered, it will not be handled: depending on the other
       warning filtering rules in effect, it might be silenced, printed
       out, or raised as an exception.
       If called with the callable and arguments omitted, will return a
       context object used like this::
            with self.assertWarns(SomeWarning):
                do_something()
       An optional keyword argument 'msg' can be provided when assertWarns
       is used as a context object.
       The context manager keeps a reference to the first matching
       warning as the 'warning' attribute; similarly, the 'filename'
       and 'lineno' attributes give you information about the line
       of Python code from which the warning was triggered.
       This allows you to inspect the warning after the assertion::
           with self.assertWarns(SomeWarning) as cm:
               do_something()
           the_warning = cm.warning
           self.assertEqual(the_warning.some_attribute, 147)
    """
    context = _AssertWarnsContext(expected_warning, self)
    return context.handle('assertWarns', args, kwargs)

def assertWarnsRegex(self, expected_warning, expected_regex,
                     *args, **kwargs):
    """Asserts that the message in a triggered warning matches a regexp.
    Basic functioning is similar to assertWarns() with the addition
    that only warnings whose messages also match the regular expression
    are considered successful matches.
    Args:
        expected_warning: Warning class expected to be triggered.
        expected_regex: Regex (re.Pattern object or string) expected
                to be found in error message.
        args: Function to be called and extra positional args.
        kwargs: Extra kwargs.
        msg: Optional message used in case of failure. Can only be used
                when assertWarnsRegex is used as a context manager.
    """
    context = _AssertWarnsContext(expected_warning, self, expected_regex)
    return context.handle('assertWarnsRegex', args, kwargs)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def countTestCases(self):
    return 1

def debug(self):
    """Run the test without collecting errors in a TestResult"""
    self.setUp()
    getattr(self, self._testMethodName)()
    self.tearDown()
    while self._cleanups:
        function, args, kwargs = self._cleanups.pop(-1)
        function(*args, **kwargs)

def defaultTestResult(self):
    return result.TestResult()

def doCleanups(self):
    """Execute all cleanup functions. Normally called for you after
    tearDown."""
    outcome = self._outcome or _Outcome()
    while self._cleanups:
        function, args, kwargs = self._cleanups.pop()
        with outcome.testPartExecutor(self):
            self._callCleanup(function, *args, **kwargs)
    # return this for backwards compatibility
    # even though we no longer use it internally
    return outcome.success

def fail(self, msg=None):
    """Fail immediately, with the given message."""
    raise self.failureException(msg)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def id(self):
    return "%s.%s" % (strclass(self.__class__), self._testMethodName)

def run(self, result=None):
    orig_result = result
    if result is None:
        result = self.defaultTestResult()
        startTestRun = getattr(result, 'startTestRun', None)
        if startTestRun is not None:
            startTestRun()
    result.startTest(self)
    testMethod = getattr(self, self._testMethodName)
    if (getattr(self.__class__, "__unittest_skip__", False) or
        getattr(testMethod, "__unittest_skip__", False)):
        # If the class or method was skipped.
        try:
            skip_why = (getattr(self.__class__, '__unittest_skip_why__', '')
                        or getattr(testMethod, '__unittest_skip_why__', ''))
            self._addSkip(result, self, skip_why)
        finally:
            result.stopTest(self)
        return
    expecting_failure_method = getattr(testMethod,
                                       "__unittest_expecting_failure__", False)
    expecting_failure_class = getattr(self,
                                      "__unittest_expecting_failure__", False)
    expecting_failure = expecting_failure_class or expecting_failure_method
    outcome = _Outcome(result)
    try:
        self._outcome = outcome
        with outcome.testPartExecutor(self):
            self._callSetUp()
        if outcome.success:
            outcome.expecting_failure = expecting_failure
            with outcome.testPartExecutor(self, isTest=True):
                self._callTestMethod(testMethod)
            outcome.expecting_failure = False
            with outcome.testPartExecutor(self):
                self._callTearDown()
        self.doCleanups()
        for test, reason in outcome.skipped:
            self._addSkip(result, test, reason)
        self._feedErrorsToResult(result, outcome.errors)
        if outcome.success:
            if expecting_failure:
                if outcome.expectedFailure:
                    self._addExpectedFailure(result, outcome.expectedFailure)
                else:
                    self._addUnexpectedSuccess(result)
            else:
                result.addSuccess(self)
        return result
    finally:
        result.stopTest(self)
        if orig_result is None:
            stopTestRun = getattr(result, 'stopTestRun', None)
            if stopTestRun is not None:
                stopTestRun()
        # explicitly break reference cycles:
        # outcome.errors -> frame -> outcome -> outcome.errors
        # outcome.expectedFailure -> frame -> outcome -> outcome.expectedFailure
        outcome.errors.clear()
        outcome.expectedFailure = None
        # clear the outcome, no more needed
        self._outcome = None

def setUp(self):
    "Hook method for setting up the test fixture before exercising it."
    pass

def shortDescription(self):
    """Returns a one-line description of the test, or None if no
    description has been provided.
    The default implementation of this method returns the first line of
    the specified test method's docstring.
    """
    doc = self._testMethodDoc
    return doc.strip().split("\n")[0].strip() if doc else None

def skipTest(self, reason):
    """Skip this test."""
    raise SkipTest(reason)

@contextlib.contextmanager
def subTest(self, msg=_subtest_msg_sentinel, **params):
    """Return a context manager that will return the enclosed block
    of code in a subtest identified by the optional message and
    keyword parameters.  A failure in the subtest marks the test
    case as failed but resumes execution at the end of the enclosed
    block, allowing further test code to be executed.
    """
    if self._outcome is None or not self._outcome.result_supports_subtests:
        yield
        return
    parent = self._subtest
    if parent is None:
        params_map = _OrderedChainMap(params)
    else:
        params_map = parent.params.new_child(params)
    self._subtest = _SubTest(self, msg, params_map)
    try:
        with self._outcome.testPartExecutor(self._subtest, isTest=True):
            yield
        if not self._outcome.success:
            result = self._outcome.result
            if result is not None and result.failfast:
                raise _ShouldStop
        elif self._outcome.expectedFailure:
            # If the test is expecting a failure, we really want to
            # stop now and register the expected failure.
            raise _ShouldStop
    finally:
        self._subtest = parent

def tearDown(self):
    "Hook method for deconstructing the test fixture after testing it."
    pass

def test_wet4_wet3(self):
    from_wc = get_random_wc('WET-4', 'Bern')
    to_wc = from_wc.match('WET-3', 'Bern')
    to_wc.validate()
    fkeys = set(to_wc.values.keys())
    fkeys_all = set(wcxf.Basis['WET-3', 'Bern'].all_wcs)
    self.assertSetEqual(fkeys_all - fkeys, set(), msg="Missing coefficients")
    for k, v in to_wc.dict.items():
        self.assertEqual(v, from_wc.dict[k], msg=f"Failed for {k}")

def test_wet_wet4(self):
    from_wc = get_random_wc('WET', 'Bern')
    to_wc = from_wc.match('WET-4', 'Bern')
    to_wc.validate()
    fkeys = set(to_wc.values.keys())
    fkeys_all = set(wcxf.Basis['WET-4', 'Bern'].all_wcs)
    self.assertSetEqual(fkeys_all - fkeys, set(), msg="Missing coefficients")
    for k, v in to_wc.dict.items():
        self.assertEqual(v, from_wc.dict[k], msg=f"Failed for {k}")

@classmethod
def addClassCleanup(cls, function, /, *args, **kwargs):
    """Same as addCleanup, except the cleanup items are called even if
    setUpClass fails (unlike tearDownClass)."""
    cls._class_cleanups.append((function, args, kwargs))

@classmethod
def doClassCleanups(cls):
    """Execute all class cleanup functions. Normally called for you after
    tearDownClass."""
    cls.tearDown_exceptions = []
    while cls._class_cleanups:
        function, args, kwargs = cls._class_cleanups.pop()
        try:
            function(*args, **kwargs)
        except Exception as exc:
            cls.tearDown_exceptions.append(sys.exc_info())

@classmethod
def setUpClass(cls):
    "Hook method for setting up class fixture before running tests in the class."

@classmethod
def tearDownClass(cls):
    "Hook method for deconstructing the class fixture after running all tests in the class."

def __init__(self, methodName='runTest'):
    """Create an instance of the class that will use the named test
       method when executed. Raises a ValueError if the instance does
       not have a method with the specified name.
    """
    self._testMethodName = methodName
    self._outcome = None
    self._testMethodDoc = 'No test'
    try:
        testMethod = getattr(self, methodName)
    except AttributeError:
        if methodName != 'runTest':
            # we allow instantiation with no explicit method name
            # but not an *incorrect* or missing method name
            raise ValueError("no such test method in %s: %s" %
                  (self.__class__, methodName))
    else:
        self._testMethodDoc = testMethod.__doc__
    self._cleanups = []
    self._subtest = None
    # Map types to custom assertEqual functions that will compare
    # instances of said type in more detail to generate a more useful
    # error message.
    self._type_equality_funcs = {}
    self.addTypeEqualityFunc(dict, 'assertDictEqual')
    self.addTypeEqualityFunc(list, 'assertListEqual')
    self.addTypeEqualityFunc(tuple, 'assertTupleEqual')
    self.addTypeEqualityFunc(set, 'assertSetEqual')
    self.addTypeEqualityFunc(frozenset, 'assertSetEqual')
    self.addTypeEqualityFunc(str, 'assertMultiLineEqual')

def addCleanup(*args, **kwargs):
    """Add a function, with arguments, to be called when the test is
    completed. Functions added are called on a LIFO basis and are
    called after tearDown on test failure or success.
    Cleanup items are called even if setUp fails (unlike tearDown)."""
    if len(args) >= 2:
        self, function, *args = args
    elif not args:
        raise TypeError("descriptor 'addCleanup' of 'TestCase' object "
                        "needs an argument")
    elif 'function' in kwargs:
        function = kwargs.pop('function')
        self, *args = args
        import warnings
        warnings.warn("Passing 'function' as keyword argument is deprecated",
                      DeprecationWarning, stacklevel=2)
    else:
        raise TypeError('addCleanup expected at least 1 positional '
                        'argument, got %d' % (len(args)-1))
    args = tuple(args)
    self._cleanups.append((function, args, kwargs))

def addTypeEqualityFunc(self, typeobj, function):
    """Add a type specific assertEqual style function to compare a type.
    This method is for use by TestCase subclasses that need to register
    their own type equality functions to provide nicer error messages.
    Args:
        typeobj: The data type to call this function on when both values
                are of the same type in assertEqual().
        function: The callable taking two arguments and an optional
                msg= argument that raises self.failureException with a
                useful error message when the two arguments are not equal.
    """
    self._type_equality_funcs[typeobj] = function

def assertAlmostEqual(self, first, second, places=None, msg=None,
                      delta=None):
    """Fail if the two objects are unequal as determined by their
       difference rounded to the given number of decimal places
       (default 7) and comparing to zero, or by comparing that the
       difference between the two objects is more than the given
       delta.
       Note that decimal places (from zero) are usually not the same
       as significant digits (measured from the most significant digit).
       If the two objects compare equal then they will automatically
       compare almost equal.
    """
    if first == second:
        # shortcut
        return
    if delta is not None and places is not None:
        raise TypeError("specify delta or places not both")
    diff = abs(first - second)
    if delta is not None:
        if diff <= delta:
            return
        standardMsg = '%s != %s within %s delta (%s difference)' % (
            safe_repr(first),
            safe_repr(second),
            safe_repr(delta),
            safe_repr(diff))
    else:
        if places is None:
            places = 7
        if round(diff, places) == 0:
            return
        standardMsg = '%s != %s within %r places (%s difference)' % (
            safe_repr(first),
            safe_repr(second),
            places,
            safe_repr(diff))
    msg = self._formatMessage(msg, standardMsg)
    raise self.failureException(msg)

def deprecated_func(*args, **kwargs):
    warnings.warn(
        'Please use {0} instead.'.format(original_func.__name__),
        DeprecationWarning, 2)
    return original_func(*args, **kwargs)

def assertCountEqual(self, first, second, msg=None):
    """Asserts that two iterables have the same elements, the same number of
    times, without regard to order.
        self.assertEqual(Counter(list(first)),
                         Counter(list(second)))
     Example:
        - [0, 1, 1] and [1, 0, 1] compare equal.
        - [0, 0, 1] and [0, 1] compare unequal.
    """
    first_seq, second_seq = list(first), list(second)
    try:
        first = collections.Counter(first_seq)
        second = collections.Counter(second_seq)
    except TypeError:
        # Handle case with unhashable elements
        differences = _count_diff_all_purpose(first_seq, second_seq)
    else:
        if first == second:
            return
        differences = _count_diff_hashable(first_seq, second_seq)
    if differences:
        standardMsg = 'Element counts were not equal:\n'
        lines = ['First has %d, Second has %d:  %r' % diff for diff in differences]
        diffMsg = '\n'.join(lines)
        standardMsg = self._truncateMessage(standardMsg, diffMsg)
        msg = self._formatMessage(msg, standardMsg)
        self.fail(msg)

def assertDictContainsSubset(self, subset, dictionary, msg=None):
    """Checks whether dictionary is a superset of subset."""
    warnings.warn('assertDictContainsSubset is deprecated',
                  DeprecationWarning)
    missing = []
    mismatched = []
    for key, value in subset.items():
        if key not in dictionary:
            missing.append(key)
        elif value != dictionary[key]:
            mismatched.append('%s, expected: %s, actual: %s' %
                              (safe_repr(key), safe_repr(value),
                               safe_repr(dictionary[key])))
    if not (missing or mismatched):
        return
    standardMsg = ''
    if missing:
        standardMsg = 'Missing: %s' % ','.join(safe_repr(m) for m in
                                                missing)
    if mismatched:
        if standardMsg:
            standardMsg += '; '
        standardMsg += 'Mismatched values: %s' % ','.join(mismatched)
    self.fail(self._formatMessage(msg, standardMsg))