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			1400 lines
		
	
	
	
		
			54 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
			
		
		
	
	
			1400 lines
		
	
	
	
		
			54 KiB
		
	
	
	
		
			Python
		
	
	
	
	
	
"""Test case implementation"""
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import sys
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import functools
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import difflib
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import logging
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import pprint
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import re
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import warnings
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import collections
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import contextlib
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import traceback
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from . import result
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from .util import (strclass, safe_repr, _count_diff_all_purpose,
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                   _count_diff_hashable, _common_shorten_repr)
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__unittest = True
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DIFF_OMITTED = ('\nDiff is %s characters long. '
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                 'Set self.maxDiff to None to see it.')
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class SkipTest(Exception):
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    """
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    Raise this exception in a test to skip it.
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    Usually you can use TestCase.skipTest() or one of the skipping decorators
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    instead of raising this directly.
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    """
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class _ShouldStop(Exception):
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    """
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    The test should stop.
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    """
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class _UnexpectedSuccess(Exception):
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    """
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    The test was supposed to fail, but it didn't!
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    """
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class _Outcome(object):
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    def __init__(self, result=None):
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        self.expecting_failure = False
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        self.result = result
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        self.result_supports_subtests = hasattr(result, "addSubTest")
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        self.success = True
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        self.skipped = []
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        self.expectedFailure = None
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        self.errors = []
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    @contextlib.contextmanager
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    def testPartExecutor(self, test_case, isTest=False):
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        old_success = self.success
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        self.success = True
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        try:
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            yield
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        except KeyboardInterrupt:
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            raise
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        except SkipTest as e:
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            self.success = False
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            self.skipped.append((test_case, str(e)))
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        except _ShouldStop:
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            pass
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        except:
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            exc_info = sys.exc_info()
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            if self.expecting_failure:
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                self.expectedFailure = exc_info
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            else:
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                self.success = False
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                self.errors.append((test_case, exc_info))
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            # explicitly break a reference cycle:
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            # exc_info -> frame -> exc_info
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            exc_info = None
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        else:
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            if self.result_supports_subtests and self.success:
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                self.errors.append((test_case, None))
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        finally:
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            self.success = self.success and old_success
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def _id(obj):
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    return obj
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def skip(reason):
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    """
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    Unconditionally skip a test.
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    """
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    def decorator(test_item):
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        if not isinstance(test_item, type):
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            @functools.wraps(test_item)
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            def skip_wrapper(*args, **kwargs):
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                raise SkipTest(reason)
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            test_item = skip_wrapper
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        test_item.__unittest_skip__ = True
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        test_item.__unittest_skip_why__ = reason
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        return test_item
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    return decorator
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def skipIf(condition, reason):
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    """
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    Skip a test if the condition is true.
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    """
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    if condition:
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        return skip(reason)
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    return _id
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def skipUnless(condition, reason):
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    """
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    Skip a test unless the condition is true.
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    """
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    if not condition:
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        return skip(reason)
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    return _id
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def expectedFailure(test_item):
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    test_item.__unittest_expecting_failure__ = True
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    return test_item
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class _BaseTestCaseContext:
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    def __init__(self, test_case):
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        self.test_case = test_case
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    def _raiseFailure(self, standardMsg):
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        msg = self.test_case._formatMessage(self.msg, standardMsg)
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        raise self.test_case.failureException(msg)
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class _AssertRaisesBaseContext(_BaseTestCaseContext):
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    def __init__(self, expected, test_case, callable_obj=None,
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                 expected_regex=None):
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        _BaseTestCaseContext.__init__(self, test_case)
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        self.expected = expected
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        self.test_case = test_case
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        if callable_obj is not None:
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            try:
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                self.obj_name = callable_obj.__name__
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            except AttributeError:
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                self.obj_name = str(callable_obj)
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        else:
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            self.obj_name = None
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        if expected_regex is not None:
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            expected_regex = re.compile(expected_regex)
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        self.expected_regex = expected_regex
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        self.msg = None
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    def handle(self, name, callable_obj, args, kwargs):
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        """
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        If callable_obj is None, assertRaises/Warns is being used as a
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        context manager, so check for a 'msg' kwarg and return self.
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        If callable_obj is not None, call it passing args and kwargs.
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        """
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        if callable_obj is None:
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            self.msg = kwargs.pop('msg', None)
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            return self
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        with self:
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            callable_obj(*args, **kwargs)
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class _AssertRaisesContext(_AssertRaisesBaseContext):
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    """A context manager used to implement TestCase.assertRaises* methods."""
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    def __enter__(self):
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        return self
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    def __exit__(self, exc_type, exc_value, tb):
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        if exc_type is None:
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            try:
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                exc_name = self.expected.__name__
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            except AttributeError:
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                exc_name = str(self.expected)
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            if self.obj_name:
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                self._raiseFailure("{} not raised by {}".format(exc_name,
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                                                                self.obj_name))
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            else:
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                self._raiseFailure("{} not raised".format(exc_name))
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        else:
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            traceback.clear_frames(tb)
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        if not issubclass(exc_type, self.expected):
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            # let unexpected exceptions pass through
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            return False
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        # store exception, without traceback, for later retrieval
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        self.exception = exc_value.with_traceback(None)
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        if self.expected_regex is None:
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            return True
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        expected_regex = self.expected_regex
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        if not expected_regex.search(str(exc_value)):
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            self._raiseFailure('"{}" does not match "{}"'.format(
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                     expected_regex.pattern, str(exc_value)))
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        return True
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class _AssertWarnsContext(_AssertRaisesBaseContext):
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    """A context manager used to implement TestCase.assertWarns* methods."""
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    def __enter__(self):
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        # The __warningregistry__'s need to be in a pristine state for tests
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        # to work properly.
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        for v in sys.modules.values():
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            if getattr(v, '__warningregistry__', None):
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                v.__warningregistry__ = {}
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        self.warnings_manager = warnings.catch_warnings(record=True)
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        self.warnings = self.warnings_manager.__enter__()
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        warnings.simplefilter("always", self.expected)
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        return self
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    def __exit__(self, exc_type, exc_value, tb):
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        self.warnings_manager.__exit__(exc_type, exc_value, tb)
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        if exc_type is not None:
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            # let unexpected exceptions pass through
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            return
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        try:
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            exc_name = self.expected.__name__
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        except AttributeError:
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            exc_name = str(self.expected)
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        first_matching = None
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        for m in self.warnings:
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            w = m.message
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            if not isinstance(w, self.expected):
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                continue
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            if first_matching is None:
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                first_matching = w
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            if (self.expected_regex is not None and
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                not self.expected_regex.search(str(w))):
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                continue
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            # store warning for later retrieval
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            self.warning = w
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            self.filename = m.filename
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            self.lineno = m.lineno
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            return
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        # Now we simply try to choose a helpful failure message
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        if first_matching is not None:
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            self._raiseFailure('"{}" does not match "{}"'.format(
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                     self.expected_regex.pattern, str(first_matching)))
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        if self.obj_name:
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            self._raiseFailure("{} not triggered by {}".format(exc_name,
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                                                               self.obj_name))
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        else:
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            self._raiseFailure("{} not triggered".format(exc_name))
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_LoggingWatcher = collections.namedtuple("_LoggingWatcher",
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                                         ["records", "output"])
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class _CapturingHandler(logging.Handler):
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    """
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    A logging handler capturing all (raw and formatted) logging output.
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    """
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    def __init__(self):
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        logging.Handler.__init__(self)
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        self.watcher = _LoggingWatcher([], [])
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    def flush(self):
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        pass
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    def emit(self, record):
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        self.watcher.records.append(record)
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        msg = self.format(record)
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        self.watcher.output.append(msg)
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class _AssertLogsContext(_BaseTestCaseContext):
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    """A context manager used to implement TestCase.assertLogs()."""
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    LOGGING_FORMAT = "%(levelname)s:%(name)s:%(message)s"
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    def __init__(self, test_case, logger_name, level):
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        _BaseTestCaseContext.__init__(self, test_case)
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        self.logger_name = logger_name
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        if level:
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            self.level = logging._nameToLevel.get(level, level)
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        else:
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            self.level = logging.INFO
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        self.msg = None
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    def __enter__(self):
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        if isinstance(self.logger_name, logging.Logger):
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            logger = self.logger = self.logger_name
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        else:
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            logger = self.logger = logging.getLogger(self.logger_name)
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        formatter = logging.Formatter(self.LOGGING_FORMAT)
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        handler = _CapturingHandler()
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        handler.setFormatter(formatter)
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        self.watcher = handler.watcher
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        self.old_handlers = logger.handlers[:]
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        self.old_level = logger.level
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        self.old_propagate = logger.propagate
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        logger.handlers = [handler]
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        logger.setLevel(self.level)
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        logger.propagate = False
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        return handler.watcher
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    def __exit__(self, exc_type, exc_value, tb):
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        self.logger.handlers = self.old_handlers
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        self.logger.propagate = self.old_propagate
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        self.logger.setLevel(self.old_level)
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        if exc_type is not None:
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            # let unexpected exceptions pass through
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            return False
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        if len(self.watcher.records) == 0:
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            self._raiseFailure(
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                "no logs of level {} or higher triggered on {}"
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                .format(logging.getLevelName(self.level), self.logger.name))
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class TestCase(object):
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    """A class whose instances are single test cases.
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    By default, the test code itself should be placed in a method named
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    'runTest'.
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    If the fixture may be used for many test cases, create as
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    many test methods as are needed. When instantiating such a TestCase
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    subclass, specify in the constructor arguments the name of the test method
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    that the instance is to execute.
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    Test authors should subclass TestCase for their own tests. Construction
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    and deconstruction of the test's environment ('fixture') can be
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    implemented by overriding the 'setUp' and 'tearDown' methods respectively.
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    If it is necessary to override the __init__ method, the base class
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    __init__ method must always be called. It is important that subclasses
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    should not change the signature of their __init__ method, since instances
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    of the classes are instantiated automatically by parts of the framework
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    in order to be run.
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    When subclassing TestCase, you can set these attributes:
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    * failureException: determines which exception will be raised when
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        the instance's assertion methods fail; test methods raising this
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        exception will be deemed to have 'failed' rather than 'errored'.
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						|
    * longMessage: determines whether long messages (including repr of
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						|
        objects used in assert methods) will be printed on failure in *addition*
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        to any explicit message passed.
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    * maxDiff: sets the maximum length of a diff in failure messages
 | 
						|
        by assert methods using difflib. It is looked up as an instance
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						|
        attribute so can be configured by individual tests if required.
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    """
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    failureException = AssertionError
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    longMessage = True
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    maxDiff = 80*8
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 | 
						|
    # If a string is longer than _diffThreshold, use normal comparison instead
 | 
						|
    # of difflib.  See #11763.
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						|
    _diffThreshold = 2**16
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 | 
						|
    # Attribute used by TestSuite for classSetUp
 | 
						|
 | 
						|
    _classSetupFailed = False
 | 
						|
 | 
						|
    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 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 addCleanup(self, function, *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)."""
 | 
						|
        self._cleanups.append((function, args, kwargs))
 | 
						|
 | 
						|
    def setUp(self):
 | 
						|
        "Hook method for setting up the test fixture before exercising it."
 | 
						|
        pass
 | 
						|
 | 
						|
    def tearDown(self):
 | 
						|
        "Hook method for deconstructing the test fixture after testing it."
 | 
						|
        pass
 | 
						|
 | 
						|
    @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 countTestCases(self):
 | 
						|
        return 1
 | 
						|
 | 
						|
    def defaultTestResult(self):
 | 
						|
        return result.TestResult()
 | 
						|
 | 
						|
    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 and doc.split("\n")[0].strip() or None
 | 
						|
 | 
						|
 | 
						|
    def id(self):
 | 
						|
        return "%s.%s" % (strclass(self.__class__), self._testMethodName)
 | 
						|
 | 
						|
    def __eq__(self, other):
 | 
						|
        if type(self) is not type(other):
 | 
						|
            return NotImplemented
 | 
						|
 | 
						|
        return self._testMethodName == other._testMethodName
 | 
						|
 | 
						|
    def __hash__(self):
 | 
						|
        return hash((type(self), self._testMethodName))
 | 
						|
 | 
						|
    def __str__(self):
 | 
						|
        return "%s (%s)" % (self._testMethodName, strclass(self.__class__))
 | 
						|
 | 
						|
    def __repr__(self):
 | 
						|
        return "<%s testMethod=%s>" % \
 | 
						|
               (strclass(self.__class__), self._testMethodName)
 | 
						|
 | 
						|
    def _addSkip(self, result, test_case, reason):
 | 
						|
        addSkip = getattr(result, 'addSkip', None)
 | 
						|
        if addSkip is not None:
 | 
						|
            addSkip(test_case, reason)
 | 
						|
        else:
 | 
						|
            warnings.warn("TestResult has no addSkip method, skips not reported",
 | 
						|
                          RuntimeWarning, 2)
 | 
						|
            result.addSuccess(test_case)
 | 
						|
 | 
						|
    @contextlib.contextmanager
 | 
						|
    def subTest(self, msg=None, **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 not self._outcome.result_supports_subtests:
 | 
						|
            yield
 | 
						|
            return
 | 
						|
        parent = self._subtest
 | 
						|
        if parent is None:
 | 
						|
            params_map = collections.ChainMap(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 _feedErrorsToResult(self, result, errors):
 | 
						|
        for test, exc_info in errors:
 | 
						|
            if isinstance(test, _SubTest):
 | 
						|
                result.addSubTest(test.test_case, test, exc_info)
 | 
						|
            elif exc_info is not None:
 | 
						|
                if issubclass(exc_info[0], self.failureException):
 | 
						|
                    result.addFailure(test, exc_info)
 | 
						|
                else:
 | 
						|
                    result.addError(test, exc_info)
 | 
						|
 | 
						|
    def _addExpectedFailure(self, result, exc_info):
 | 
						|
        try:
 | 
						|
            addExpectedFailure = result.addExpectedFailure
 | 
						|
        except AttributeError:
 | 
						|
            warnings.warn("TestResult has no addExpectedFailure method, reporting as passes",
 | 
						|
                          RuntimeWarning)
 | 
						|
            result.addSuccess(self)
 | 
						|
        else:
 | 
						|
            addExpectedFailure(self, exc_info)
 | 
						|
 | 
						|
    def _addUnexpectedSuccess(self, result):
 | 
						|
        try:
 | 
						|
            addUnexpectedSuccess = result.addUnexpectedSuccess
 | 
						|
        except AttributeError:
 | 
						|
            warnings.warn("TestResult has no addUnexpectedSuccess method, reporting as failure",
 | 
						|
                          RuntimeWarning)
 | 
						|
            # We need to pass an actual exception and traceback to addFailure,
 | 
						|
            # otherwise the legacy result can choke.
 | 
						|
            try:
 | 
						|
                raise _UnexpectedSuccess from None
 | 
						|
            except _UnexpectedSuccess:
 | 
						|
                result.addFailure(self, sys.exc_info())
 | 
						|
        else:
 | 
						|
            addUnexpectedSuccess(self)
 | 
						|
 | 
						|
    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 = getattr(testMethod,
 | 
						|
                                    "__unittest_expecting_failure__", False)
 | 
						|
        outcome = _Outcome(result)
 | 
						|
        try:
 | 
						|
            self._outcome = outcome
 | 
						|
 | 
						|
            with outcome.testPartExecutor(self):
 | 
						|
                self.setUp()
 | 
						|
            if outcome.success:
 | 
						|
                outcome.expecting_failure = expecting_failure
 | 
						|
                with outcome.testPartExecutor(self, isTest=True):
 | 
						|
                    testMethod()
 | 
						|
                outcome.expecting_failure = False
 | 
						|
                with outcome.testPartExecutor(self):
 | 
						|
                    self.tearDown()
 | 
						|
 | 
						|
            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 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):
 | 
						|
                function(*args, **kwargs)
 | 
						|
 | 
						|
        # return this for backwards compatibility
 | 
						|
        # even though we no longer us it internally
 | 
						|
        return outcome.success
 | 
						|
 | 
						|
    def __call__(self, *args, **kwds):
 | 
						|
        return self.run(*args, **kwds)
 | 
						|
 | 
						|
    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 skipTest(self, reason):
 | 
						|
        """Skip this test."""
 | 
						|
        raise SkipTest(reason)
 | 
						|
 | 
						|
    def fail(self, msg=None):
 | 
						|
        """Fail immediately, with the given message."""
 | 
						|
        raise self.failureException(msg)
 | 
						|
 | 
						|
    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 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 _formatMessage(self, msg, standardMsg):
 | 
						|
        """Honour the longMessage attribute when generating failure messages.
 | 
						|
        If longMessage is False this means:
 | 
						|
        * Use only an explicit message if it is provided
 | 
						|
        * Otherwise use the standard message for the assert
 | 
						|
 | 
						|
        If longMessage is True:
 | 
						|
        * Use the standard message
 | 
						|
        * If an explicit message is provided, plus ' : ' and the explicit message
 | 
						|
        """
 | 
						|
        if not self.longMessage:
 | 
						|
            return msg or standardMsg
 | 
						|
        if msg is None:
 | 
						|
            return standardMsg
 | 
						|
        try:
 | 
						|
            # don't switch to '{}' formatting in Python 2.X
 | 
						|
            # it changes the way unicode input is handled
 | 
						|
            return '%s : %s' % (standardMsg, msg)
 | 
						|
        except UnicodeDecodeError:
 | 
						|
            return  '%s : %s' % (safe_repr(standardMsg), safe_repr(msg))
 | 
						|
 | 
						|
    def assertRaises(self, excClass, callableObj=None, *args, **kwargs):
 | 
						|
        """Fail unless an exception of class excClass is raised
 | 
						|
           by callableObj when invoked with arguments args and keyword
 | 
						|
           arguments kwargs. 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 callableObj omitted or None, 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(excClass, self, callableObj)
 | 
						|
        return context.handle('assertRaises', callableObj, args, kwargs)
 | 
						|
 | 
						|
    def assertWarns(self, expected_warning, callable_obj=None, *args, **kwargs):
 | 
						|
        """Fail unless a warning of class warnClass is triggered
 | 
						|
           by callable_obj when invoked with arguments args and keyword
 | 
						|
           arguments kwargs.  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 callable_obj omitted or None, 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, callable_obj)
 | 
						|
        return context.handle('assertWarns', callable_obj, args, kwargs)
 | 
						|
 | 
						|
    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 _getAssertEqualityFunc(self, first, second):
 | 
						|
        """Get a detailed comparison function for the types of the two args.
 | 
						|
 | 
						|
        Returns: A callable accepting (first, second, msg=None) that will
 | 
						|
        raise a failure exception if first != second with a useful human
 | 
						|
        readable error message for those types.
 | 
						|
        """
 | 
						|
        #
 | 
						|
        # NOTE(gregory.p.smith): I considered isinstance(first, type(second))
 | 
						|
        # and vice versa.  I opted for the conservative approach in case
 | 
						|
        # subclasses are not intended to be compared in detail to their super
 | 
						|
        # class instances using a type equality func.  This means testing
 | 
						|
        # subtypes won't automagically use the detailed comparison.  Callers
 | 
						|
        # should use their type specific assertSpamEqual method to compare
 | 
						|
        # subclasses if the detailed comparison is desired and appropriate.
 | 
						|
        # See the discussion in http://bugs.python.org/issue2578.
 | 
						|
        #
 | 
						|
        if type(first) is type(second):
 | 
						|
            asserter = self._type_equality_funcs.get(type(first))
 | 
						|
            if asserter is not None:
 | 
						|
                if isinstance(asserter, str):
 | 
						|
                    asserter = getattr(self, asserter)
 | 
						|
                return asserter
 | 
						|
 | 
						|
        return self._baseAssertEqual
 | 
						|
 | 
						|
    def _baseAssertEqual(self, first, second, msg=None):
 | 
						|
        """The default assertEqual implementation, not type specific."""
 | 
						|
        if not first == second:
 | 
						|
            standardMsg = '%s != %s' % _common_shorten_repr(first, second)
 | 
						|
            msg = self._formatMessage(msg, standardMsg)
 | 
						|
            raise self.failureException(msg)
 | 
						|
 | 
						|
    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 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 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
 | 
						|
           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 signficant 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")
 | 
						|
 | 
						|
        if delta is not None:
 | 
						|
            if abs(first - second) <= delta:
 | 
						|
                return
 | 
						|
 | 
						|
            standardMsg = '%s != %s within %s delta' % (safe_repr(first),
 | 
						|
                                                        safe_repr(second),
 | 
						|
                                                        safe_repr(delta))
 | 
						|
        else:
 | 
						|
            if places is None:
 | 
						|
                places = 7
 | 
						|
 | 
						|
            if round(abs(second-first), 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 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
 | 
						|
           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 signficant 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")
 | 
						|
        if delta is not None:
 | 
						|
            if not (first == second) and abs(first - second) > delta:
 | 
						|
                return
 | 
						|
            standardMsg = '%s == %s within %s delta' % (safe_repr(first),
 | 
						|
                                                        safe_repr(second),
 | 
						|
                                                        safe_repr(delta))
 | 
						|
        else:
 | 
						|
            if places is None:
 | 
						|
                places = 7
 | 
						|
            if not (first == second) and round(abs(second-first), 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 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, 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, 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, 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 _truncateMessage(self, message, diff):
 | 
						|
        max_diff = self.maxDiff
 | 
						|
        if max_diff is None or len(diff) <= max_diff:
 | 
						|
            return message + diff
 | 
						|
        return message + (DIFF_OMITTED % len(diff))
 | 
						|
 | 
						|
    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 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 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 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 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 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 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 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 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 assertCountEqual(self, first, second, msg=None):
 | 
						|
        """An unordered sequence comparison asserting that the same elements,
 | 
						|
        regardless of order.  If the same element occurs more than once,
 | 
						|
        it verifies that the elements occur the same number of times.
 | 
						|
 | 
						|
            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 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 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 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 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 assertIsNotNone(self, obj, msg=None):
 | 
						|
        """Included for symmetry with assertIsNone."""
 | 
						|
        if obj is None:
 | 
						|
            standardMsg = 'unexpectedly None'
 | 
						|
            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 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 assertRaisesRegex(self, expected_exception, expected_regex,
 | 
						|
                          callable_obj=None, *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.
 | 
						|
            callable_obj: Function to be called.
 | 
						|
            msg: Optional message used in case of failure. Can only be used
 | 
						|
                    when assertRaisesRegex is used as a context manager.
 | 
						|
            args: Extra args.
 | 
						|
            kwargs: Extra kwargs.
 | 
						|
        """
 | 
						|
        context = _AssertRaisesContext(expected_exception, self, callable_obj,
 | 
						|
                                       expected_regex)
 | 
						|
 | 
						|
        return context.handle('assertRaisesRegex', callable_obj, args, kwargs)
 | 
						|
 | 
						|
    def assertWarnsRegex(self, expected_warning, expected_regex,
 | 
						|
                         callable_obj=None, *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.
 | 
						|
            callable_obj: Function to be called.
 | 
						|
            msg: Optional message used in case of failure. Can only be used
 | 
						|
                    when assertWarnsRegex is used as a context manager.
 | 
						|
            args: Extra args.
 | 
						|
            kwargs: Extra kwargs.
 | 
						|
        """
 | 
						|
        context = _AssertWarnsContext(expected_warning, self, callable_obj,
 | 
						|
                                      expected_regex)
 | 
						|
        return context.handle('assertWarnsRegex', callable_obj, 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):
 | 
						|
            msg = msg or "Regex didn't match"
 | 
						|
            msg = '%s: %r not found in %r' % (msg, expected_regex.pattern, text)
 | 
						|
            raise self.failureException(msg)
 | 
						|
 | 
						|
    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:
 | 
						|
            msg = msg or "Regex matched"
 | 
						|
            msg = '%s: %r matches %r in %r' % (msg,
 | 
						|
                                               text[match.start():match.end()],
 | 
						|
                                               unexpected_regex.pattern,
 | 
						|
                                               text)
 | 
						|
            raise self.failureException(msg)
 | 
						|
 | 
						|
 | 
						|
    def _deprecate(original_func):
 | 
						|
        def deprecated_func(*args, **kwargs):
 | 
						|
            warnings.warn(
 | 
						|
                'Please use {0} instead.'.format(original_func.__name__),
 | 
						|
                DeprecationWarning, 2)
 | 
						|
            return original_func(*args, **kwargs)
 | 
						|
        return deprecated_func
 | 
						|
 | 
						|
    # see #9424
 | 
						|
    failUnlessEqual = assertEquals = _deprecate(assertEqual)
 | 
						|
    failIfEqual = assertNotEquals = _deprecate(assertNotEqual)
 | 
						|
    failUnlessAlmostEqual = assertAlmostEquals = _deprecate(assertAlmostEqual)
 | 
						|
    failIfAlmostEqual = assertNotAlmostEquals = _deprecate(assertNotAlmostEqual)
 | 
						|
    failUnless = assert_ = _deprecate(assertTrue)
 | 
						|
    failUnlessRaises = _deprecate(assertRaises)
 | 
						|
    failIf = _deprecate(assertFalse)
 | 
						|
    assertRaisesRegexp = _deprecate(assertRaisesRegex)
 | 
						|
    assertRegexpMatches = _deprecate(assertRegex)
 | 
						|
 | 
						|
 | 
						|
 | 
						|
class FunctionTestCase(TestCase):
 | 
						|
    """A test case that wraps a test function.
 | 
						|
 | 
						|
    This is useful for slipping pre-existing test functions into the
 | 
						|
    unittest framework. Optionally, set-up and tidy-up functions can be
 | 
						|
    supplied. As with TestCase, the tidy-up ('tearDown') function will
 | 
						|
    always be called if the set-up ('setUp') function ran successfully.
 | 
						|
    """
 | 
						|
 | 
						|
    def __init__(self, testFunc, setUp=None, tearDown=None, description=None):
 | 
						|
        super(FunctionTestCase, self).__init__()
 | 
						|
        self._setUpFunc = setUp
 | 
						|
        self._tearDownFunc = tearDown
 | 
						|
        self._testFunc = testFunc
 | 
						|
        self._description = description
 | 
						|
 | 
						|
    def setUp(self):
 | 
						|
        if self._setUpFunc is not None:
 | 
						|
            self._setUpFunc()
 | 
						|
 | 
						|
    def tearDown(self):
 | 
						|
        if self._tearDownFunc is not None:
 | 
						|
            self._tearDownFunc()
 | 
						|
 | 
						|
    def runTest(self):
 | 
						|
        self._testFunc()
 | 
						|
 | 
						|
    def id(self):
 | 
						|
        return self._testFunc.__name__
 | 
						|
 | 
						|
    def __eq__(self, other):
 | 
						|
        if not isinstance(other, self.__class__):
 | 
						|
            return NotImplemented
 | 
						|
 | 
						|
        return self._setUpFunc == other._setUpFunc and \
 | 
						|
               self._tearDownFunc == other._tearDownFunc and \
 | 
						|
               self._testFunc == other._testFunc and \
 | 
						|
               self._description == other._description
 | 
						|
 | 
						|
    def __ne__(self, other):
 | 
						|
        return not self == other
 | 
						|
 | 
						|
    def __hash__(self):
 | 
						|
        return hash((type(self), self._setUpFunc, self._tearDownFunc,
 | 
						|
                     self._testFunc, self._description))
 | 
						|
 | 
						|
    def __str__(self):
 | 
						|
        return "%s (%s)" % (strclass(self.__class__),
 | 
						|
                            self._testFunc.__name__)
 | 
						|
 | 
						|
    def __repr__(self):
 | 
						|
        return "<%s tec=%s>" % (strclass(self.__class__),
 | 
						|
                                     self._testFunc)
 | 
						|
 | 
						|
    def shortDescription(self):
 | 
						|
        if self._description is not None:
 | 
						|
            return self._description
 | 
						|
        doc = self._testFunc.__doc__
 | 
						|
        return doc and doc.split("\n")[0].strip() or None
 | 
						|
 | 
						|
 | 
						|
class _SubTest(TestCase):
 | 
						|
 | 
						|
    def __init__(self, test_case, message, params):
 | 
						|
        super().__init__()
 | 
						|
        self._message = message
 | 
						|
        self.test_case = test_case
 | 
						|
        self.params = params
 | 
						|
        self.failureException = test_case.failureException
 | 
						|
 | 
						|
    def runTest(self):
 | 
						|
        raise NotImplementedError("subtests cannot be run directly")
 | 
						|
 | 
						|
    def _subDescription(self):
 | 
						|
        parts = []
 | 
						|
        if self._message:
 | 
						|
            parts.append("[{}]".format(self._message))
 | 
						|
        if self.params:
 | 
						|
            params_desc = ', '.join(
 | 
						|
                "{}={!r}".format(k, v)
 | 
						|
                for (k, v) in sorted(self.params.items()))
 | 
						|
            parts.append("({})".format(params_desc))
 | 
						|
        return " ".join(parts) or '(<subtest>)'
 | 
						|
 | 
						|
    def id(self):
 | 
						|
        return "{} {}".format(self.test_case.id(), self._subDescription())
 | 
						|
 | 
						|
    def shortDescription(self):
 | 
						|
        """Returns a one-line description of the subtest, or None if no
 | 
						|
        description has been provided.
 | 
						|
        """
 | 
						|
        return self.test_case.shortDescription()
 | 
						|
 | 
						|
    def __str__(self):
 | 
						|
        return "{} {}".format(self.test_case, self._subDescription())
 |