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svn+ssh://pythondev@svn.python.org/python/trunk ........ r81853 | michael.foord | 2010-06-08 23:44:52 +0100 (Tue, 08 Jun 2010) | 1 line Issue 8948. cleanup functions are not run by unittest.TestCase.debug(), plus class and module teardowns are not run by unittest.TestSuite.debug(). ........
1099 lines
43 KiB
Python
1099 lines
43 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 pprint
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import re
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import warnings
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from . import result
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from .util import (strclass, safe_repr, sorted_list_difference,
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unorderable_list_difference)
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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 TestResult.skip() or one of the skipping decorators
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instead of raising this directly.
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"""
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pass
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class _ExpectedFailure(Exception):
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"""
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Raise this when a test is expected to fail.
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This is an implementation detail.
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"""
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def __init__(self, exc_info):
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super(_ExpectedFailure, self).__init__()
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self.exc_info = exc_info
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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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pass
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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) and issubclass(test_item, TestCase)):
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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(func):
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@functools.wraps(func)
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def wrapper(*args, **kwargs):
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try:
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func(*args, **kwargs)
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except Exception:
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raise _ExpectedFailure(sys.exc_info())
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raise _UnexpectedSuccess
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return wrapper
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class _AssertRaisesContext(object):
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"""A context manager used to implement TestCase.assertRaises* methods."""
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def __init__(self, expected, test_case, callable_obj=None,
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expected_regexp=None):
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self.expected = expected
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self.failureException = test_case.failureException
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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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self.expected_regexp = expected_regexp
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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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raise self.failureException("{0} not raised by {1}"
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.format(exc_name, self.obj_name))
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else:
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raise self.failureException("{0} not raised"
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.format(exc_name))
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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_regexp is None:
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return True
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expected_regexp = self.expected_regexp
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if isinstance(expected_regexp, (bytes, str)):
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expected_regexp = re.compile(expected_regexp)
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if not expected_regexp.search(str(exc_value)):
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raise self.failureException('"%s" does not match "%s"' %
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(expected_regexp.pattern, str(exc_value)))
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return True
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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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"""
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# This attribute 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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failureException = AssertionError
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# This attribute 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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longMessage = False
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# This attribute sets the maximum length of a diff in failure messsages
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# by assert methods using difflib. It is looked up as an instance attribute
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# so can be configured by individual tests if required.
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maxDiff = 80*8
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# Attribute used by TestSuite for classSetUp
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_classSetupFailed = False
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def __init__(self, methodName='runTest'):
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"""Create an instance of the class that will use the named test
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method when executed. Raises a ValueError if the instance does
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not have a method with the specified name.
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"""
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self._testMethodName = methodName
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self._resultForDoCleanups = None
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try:
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testMethod = getattr(self, methodName)
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except AttributeError:
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raise ValueError("no such test method in %s: %s" %
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(self.__class__, methodName))
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self._testMethodDoc = testMethod.__doc__
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self._cleanups = []
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# Map types to custom assertEqual functions that will compare
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# instances of said type in more detail to generate a more useful
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# error message.
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self._type_equality_funcs = {}
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self.addTypeEqualityFunc(dict, self.assertDictEqual)
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self.addTypeEqualityFunc(list, self.assertListEqual)
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self.addTypeEqualityFunc(tuple, self.assertTupleEqual)
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self.addTypeEqualityFunc(set, self.assertSetEqual)
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self.addTypeEqualityFunc(frozenset, self.assertSetEqual)
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self.addTypeEqualityFunc(str, self.assertMultiLineEqual)
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def addTypeEqualityFunc(self, typeobj, function):
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"""Add a type specific assertEqual style function to compare a type.
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This method is for use by TestCase subclasses that need to register
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their own type equality functions to provide nicer error messages.
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Args:
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typeobj: The data type to call this function on when both values
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are of the same type in assertEqual().
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function: The callable taking two arguments and an optional
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msg= argument that raises self.failureException with a
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useful error message when the two arguments are not equal.
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"""
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self._type_equality_funcs[typeobj] = function
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def addCleanup(self, function, *args, **kwargs):
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"""Add a function, with arguments, to be called when the test is
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completed. Functions added are called on a LIFO basis and are
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called after tearDown on test failure or success.
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Cleanup items are called even if setUp fails (unlike tearDown)."""
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self._cleanups.append((function, args, kwargs))
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def setUp(self):
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"Hook method for setting up the test fixture before exercising it."
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pass
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def tearDown(self):
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"Hook method for deconstructing the test fixture after testing it."
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pass
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@classmethod
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def setUpClass(cls):
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"Hook method for setting up class fixture before running tests in the class."
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@classmethod
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def tearDownClass(cls):
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"Hook method for deconstructing the class fixture after running all tests in the class."
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def countTestCases(self):
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return 1
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def defaultTestResult(self):
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return result.TestResult()
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def shortDescription(self):
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"""Returns a one-line description of the test, or None if no
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description has been provided.
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The default implementation of this method returns the first line of
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the specified test method's docstring.
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"""
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doc = self._testMethodDoc
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return doc and doc.split("\n")[0].strip() or None
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def id(self):
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return "%s.%s" % (strclass(self.__class__), self._testMethodName)
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def __eq__(self, other):
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if type(self) is not type(other):
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return NotImplemented
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return self._testMethodName == other._testMethodName
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def __hash__(self):
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return hash((type(self), self._testMethodName))
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def __str__(self):
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return "%s (%s)" % (self._testMethodName, strclass(self.__class__))
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def __repr__(self):
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return "<%s testMethod=%s>" % \
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(strclass(self.__class__), self._testMethodName)
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def _addSkip(self, result, reason):
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addSkip = getattr(result, 'addSkip', None)
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if addSkip is not None:
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addSkip(self, reason)
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else:
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warnings.warn("TestResult has no addSkip method, skips not reported",
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RuntimeWarning, 2)
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result.addSuccess(self)
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def run(self, result=None):
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orig_result = result
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if result is None:
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result = self.defaultTestResult()
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startTestRun = getattr(result, 'startTestRun', None)
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if startTestRun is not None:
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startTestRun()
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self._resultForDoCleanups = result
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result.startTest(self)
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testMethod = getattr(self, self._testMethodName)
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if (getattr(self.__class__, "__unittest_skip__", False) or
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getattr(testMethod, "__unittest_skip__", False)):
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# If the class or method was skipped.
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try:
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skip_why = (getattr(self.__class__, '__unittest_skip_why__', '')
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or getattr(testMethod, '__unittest_skip_why__', ''))
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self._addSkip(result, skip_why)
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finally:
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result.stopTest(self)
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return
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try:
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success = False
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try:
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self.setUp()
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except SkipTest as e:
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self._addSkip(result, str(e))
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except Exception:
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result.addError(self, sys.exc_info())
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else:
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try:
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testMethod()
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except self.failureException:
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result.addFailure(self, sys.exc_info())
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except _ExpectedFailure as e:
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addExpectedFailure = getattr(result, 'addExpectedFailure', None)
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if addExpectedFailure is not None:
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addExpectedFailure(self, e.exc_info)
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else:
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warnings.warn("TestResult has no addExpectedFailure method, reporting as passes",
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RuntimeWarning)
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result.addSuccess(self)
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except _UnexpectedSuccess:
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addUnexpectedSuccess = getattr(result, 'addUnexpectedSuccess', None)
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if addUnexpectedSuccess is not None:
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addUnexpectedSuccess(self)
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else:
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warnings.warn("TestResult has no addUnexpectedSuccess method, reporting as failures",
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RuntimeWarning)
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result.addFailure(self, sys.exc_info())
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except SkipTest as e:
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self._addSkip(result, str(e))
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except Exception:
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result.addError(self, sys.exc_info())
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else:
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success = True
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try:
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self.tearDown()
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except Exception:
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result.addError(self, sys.exc_info())
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success = False
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cleanUpSuccess = self.doCleanups()
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success = success and cleanUpSuccess
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if success:
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result.addSuccess(self)
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finally:
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result.stopTest(self)
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if orig_result is None:
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stopTestRun = getattr(result, 'stopTestRun', None)
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if stopTestRun is not None:
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stopTestRun()
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def doCleanups(self):
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"""Execute all cleanup functions. Normally called for you after
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tearDown."""
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result = self._resultForDoCleanups
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ok = True
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while self._cleanups:
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function, args, kwargs = self._cleanups.pop(-1)
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try:
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function(*args, **kwargs)
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except Exception:
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ok = False
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result.addError(self, sys.exc_info())
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return ok
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def __call__(self, *args, **kwds):
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return self.run(*args, **kwds)
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def debug(self):
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"""Run the test without collecting errors in a TestResult"""
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self.setUp()
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getattr(self, self._testMethodName)()
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self.tearDown()
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while self._cleanups:
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function, args, kwargs = self._cleanups.pop(-1)
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function(*args, **kwargs)
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def skipTest(self, reason):
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"""Skip this test."""
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raise SkipTest(reason)
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def fail(self, msg=None):
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"""Fail immediately, with the given message."""
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raise self.failureException(msg)
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def assertFalse(self, expr, msg=None):
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"Fail the test if the expression is true."
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if expr:
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msg = self._formatMessage(msg, "%s is not False" % safe_repr(expr))
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raise self.failureException(msg)
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def assertTrue(self, expr, msg=None):
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"""Fail the test unless the expression is true."""
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if not expr:
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msg = self._formatMessage(msg, "%s is not True" % safe_repr(expr))
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raise self.failureException(msg)
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def _formatMessage(self, msg, standardMsg):
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"""Honour the longMessage attribute when generating failure messages.
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If longMessage is False this means:
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* Use only an explicit message if it is provided
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* Otherwise use the standard message for the assert
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If longMessage is True:
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* Use the standard message
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* If an explicit message is provided, plus ' : ' and the explicit message
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"""
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if not self.longMessage:
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return msg or standardMsg
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if msg is None:
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return standardMsg
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try:
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# don't switch to '{}' formatting in Python 2.X
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# it changes the way unicode input is handled
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return '%s : %s' % (standardMsg, msg)
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except UnicodeDecodeError:
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return '%s : %s' % (safe_repr(standardMsg), safe_repr(msg))
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def assertRaises(self, excClass, callableObj=None, *args, **kwargs):
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"""Fail unless an exception of class excClass is thrown
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by callableObj when invoked with arguments args and keyword
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arguments kwargs. If a different type of exception is
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thrown, it will not be caught, and the test case will be
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deemed to have suffered an error, exactly as for an
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unexpected exception.
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If called with callableObj omitted or None, will return a
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context object used like this::
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with self.assertRaises(SomeException):
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do_something()
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The context manager keeps a reference to the exception as
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the 'exception' attribute. This allows you to inspect the
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exception after the assertion::
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with self.assertRaises(SomeException) as cm:
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do_something()
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the_exception = cm.exception
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self.assertEqual(the_exception.error_code, 3)
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"""
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context = _AssertRaisesContext(excClass, self, callableObj)
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if callableObj is None:
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return context
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with context:
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callableObj(*args, **kwargs)
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def _getAssertEqualityFunc(self, first, second):
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"""Get a detailed comparison function for the types of the two args.
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Returns: A callable accepting (first, second, msg=None) that will
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raise a failure exception if first != second with a useful human
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readable error message for those types.
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"""
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#
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# NOTE(gregory.p.smith): I considered isinstance(first, type(second))
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# and vice versa. I opted for the conservative approach in case
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# subclasses are not intended to be compared in detail to their super
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# class instances using a type equality func. This means testing
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# subtypes won't automagically use the detailed comparison. Callers
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# should use their type specific assertSpamEqual method to compare
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# subclasses if the detailed comparison is desired and appropriate.
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# See the discussion in http://bugs.python.org/issue2578.
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#
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if type(first) is type(second):
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asserter = self._type_equality_funcs.get(type(first))
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if asserter is not None:
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return asserter
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return self._baseAssertEqual
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def _baseAssertEqual(self, first, second, msg=None):
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"""The default assertEqual implementation, not type specific."""
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if not first == second:
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standardMsg = '%s != %s' % (safe_repr(first), safe_repr(second))
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msg = self._formatMessage(msg, standardMsg)
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raise self.failureException(msg)
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def assertEqual(self, first, second, msg=None):
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"""Fail if the two objects are unequal as determined by the '=='
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operator.
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"""
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assertion_func = self._getAssertEqualityFunc(first, second)
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assertion_func(first, second, msg=msg)
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def assertNotEqual(self, first, second, msg=None):
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"""Fail if the two objects are equal as determined by the '=='
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operator.
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"""
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if not first != second:
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msg = self._formatMessage(msg, '%s == %s' % (safe_repr(first),
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safe_repr(second)))
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raise self.failureException(msg)
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def assertAlmostEqual(self, first, second, *, places=None, msg=None,
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delta=None):
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"""Fail if the two objects are unequal as determined by their
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difference rounded to the given number of decimal places
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(default 7) and comparing to zero, or by comparing that the
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between the two objects is more than the given delta.
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Note that decimal places (from zero) are usually not the same
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as significant digits (measured from the most signficant digit).
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If the two objects compare equal then they will automatically
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compare almost equal.
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"""
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if first == second:
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# shortcut
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return
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if delta is not None and places is not None:
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raise TypeError("specify delta or places not both")
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|
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if delta is not None:
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if abs(first - second) <= delta:
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return
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|
|
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)
|
|
|
|
# Synonyms for assertion methods
|
|
|
|
# The plurals are undocumented. Keep them that way to discourage use.
|
|
# Do not add more. Do not remove.
|
|
# Going through a deprecation cycle on these would annoy many people.
|
|
assertEquals = assertEqual
|
|
assertNotEquals = assertNotEqual
|
|
assertAlmostEquals = assertAlmostEqual
|
|
assertNotAlmostEquals = assertNotAlmostEqual
|
|
assert_ = assertTrue
|
|
|
|
# These fail* assertion method names are pending deprecation and will
|
|
# be a DeprecationWarning in 3.2; http://bugs.python.org/issue2578
|
|
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
|
|
|
|
failUnlessEqual = _deprecate(assertEqual)
|
|
failIfEqual = _deprecate(assertNotEqual)
|
|
failUnlessAlmostEqual = _deprecate(assertAlmostEqual)
|
|
failIfAlmostEqual = _deprecate(assertNotAlmostEqual)
|
|
failUnless = _deprecate(assertTrue)
|
|
failUnlessRaises = _deprecate(assertRaises)
|
|
failIf = _deprecate(assertFalse)
|
|
|
|
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 != 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
|
|
|
|
seq1_repr = safe_repr(seq1)
|
|
seq2_repr = safe_repr(seq2)
|
|
if len(seq1_repr) > 30:
|
|
seq1_repr = seq1_repr[:30] + '...'
|
|
if len(seq2_repr) > 30:
|
|
seq2_repr = seq2_repr[:30] + '...'
|
|
elements = (seq_type_name.capitalize(), seq1_repr, seq2_repr)
|
|
differing = '%ss differ: %s != %s\n' % elements
|
|
|
|
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.assert_(isinstance(d1, dict), 'First argument is not a dictionary')
|
|
self.assert_(isinstance(d2, dict), 'Second argument is not a dictionary')
|
|
|
|
if d1 != d2:
|
|
standardMsg = '%s != %s' % (safe_repr(d1, True), safe_repr(d2, True))
|
|
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, expected, actual, msg=None):
|
|
"""Checks whether actual is a superset of expected."""
|
|
missing = []
|
|
mismatched = []
|
|
for key, value in expected.items():
|
|
if key not in actual:
|
|
missing.append(key)
|
|
elif value != actual[key]:
|
|
mismatched.append('%s, expected: %s, actual: %s' %
|
|
(safe_repr(key), safe_repr(value),
|
|
safe_repr(actual[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 assertSameElements(self, expected_seq, actual_seq, msg=None):
|
|
"""An unordered sequence specific comparison.
|
|
|
|
Raises with an error message listing which elements of expected_seq
|
|
are missing from actual_seq and vice versa if any.
|
|
|
|
Duplicate elements are ignored when comparing *expected_seq* and
|
|
*actual_seq*. It is the equivalent of ``assertEqual(set(expected),
|
|
set(actual))`` but it works with sequences of unhashable objects as
|
|
well.
|
|
"""
|
|
warnings.warn('assertSameElements is deprecated',
|
|
DeprecationWarning)
|
|
try:
|
|
expected = set(expected_seq)
|
|
actual = set(actual_seq)
|
|
missing = sorted(expected.difference(actual))
|
|
unexpected = sorted(actual.difference(expected))
|
|
except TypeError:
|
|
# Fall back to slower list-compare if any of the objects are
|
|
# not hashable.
|
|
expected = list(expected_seq)
|
|
actual = list(actual_seq)
|
|
try:
|
|
expected.sort()
|
|
actual.sort()
|
|
except TypeError:
|
|
missing, unexpected = unorderable_list_difference(expected,
|
|
actual)
|
|
else:
|
|
missing, unexpected = sorted_list_difference(expected, actual)
|
|
errors = []
|
|
if missing:
|
|
errors.append('Expected, but missing:\n %s' %
|
|
safe_repr(missing))
|
|
if unexpected:
|
|
errors.append('Unexpected, but present:\n %s' %
|
|
safe_repr(unexpected))
|
|
if errors:
|
|
standardMsg = '\n'.join(errors)
|
|
self.fail(self._formatMessage(msg, standardMsg))
|
|
|
|
|
|
def assertItemsEqual(self, expected_seq, actual_seq, msg=None):
|
|
"""An unordered sequence / set specific comparison. It asserts that
|
|
expected_seq and actual_seq contain the same elements. It is
|
|
the equivalent of::
|
|
|
|
self.assertEqual(sorted(expected_seq), sorted(actual_seq))
|
|
|
|
Raises with an error message listing which elements of expected_seq
|
|
are missing from actual_seq and vice versa if any.
|
|
|
|
Asserts that each element has the same count in both sequences.
|
|
Example:
|
|
- [0, 1, 1] and [1, 0, 1] compare equal.
|
|
- [0, 0, 1] and [0, 1] compare unequal.
|
|
"""
|
|
try:
|
|
expected = sorted(expected_seq)
|
|
actual = sorted(actual_seq)
|
|
except TypeError:
|
|
# Unsortable items (example: set(), complex(), ...)
|
|
expected = list(expected_seq)
|
|
actual = list(actual_seq)
|
|
missing, unexpected = unorderable_list_difference(expected, actual)
|
|
else:
|
|
return self.assertSequenceEqual(expected, actual, msg=msg)
|
|
|
|
errors = []
|
|
if missing:
|
|
errors.append('Expected, but missing:\n %s' %
|
|
safe_repr(missing))
|
|
if unexpected:
|
|
errors.append('Unexpected, but present:\n %s' %
|
|
safe_repr(unexpected))
|
|
if errors:
|
|
standardMsg = '\n'.join(errors)
|
|
self.fail(self._formatMessage(msg, standardMsg))
|
|
|
|
def assertMultiLineEqual(self, first, second, msg=None):
|
|
"""Assert that two multi-line strings are equal."""
|
|
self.assert_(isinstance(first, str), (
|
|
'First argument is not a string'))
|
|
self.assert_(isinstance(second, str), (
|
|
'Second argument is not a string'))
|
|
|
|
if first != second:
|
|
standardMsg = '%s != %s' % (safe_repr(first, True), safe_repr(second, True))
|
|
diff = '\n' + ''.join(difflib.ndiff(first.splitlines(True),
|
|
second.splitlines(True)))
|
|
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 assertRaisesRegexp(self, expected_exception, expected_regexp,
|
|
callable_obj=None, *args, **kwargs):
|
|
"""Asserts that the message in a raised exception matches a regexp.
|
|
|
|
Args:
|
|
expected_exception: Exception class expected to be raised.
|
|
expected_regexp: Regexp (re pattern object or string) expected
|
|
to be found in error message.
|
|
callable_obj: Function to be called.
|
|
args: Extra args.
|
|
kwargs: Extra kwargs.
|
|
"""
|
|
context = _AssertRaisesContext(expected_exception, self, callable_obj,
|
|
expected_regexp)
|
|
if callable_obj is None:
|
|
return context
|
|
with context:
|
|
callable_obj(*args, **kwargs)
|
|
|
|
def assertRegexpMatches(self, text, expected_regexp, msg=None):
|
|
"""Fail the test unless the text matches the regular expression."""
|
|
if isinstance(expected_regexp, (str, bytes)):
|
|
expected_regexp = re.compile(expected_regexp)
|
|
if not expected_regexp.search(text):
|
|
msg = msg or "Regexp didn't match"
|
|
msg = '%s: %r not found in %r' % (msg, expected_regexp.pattern, text)
|
|
raise self.failureException(msg)
|
|
|
|
def assertNotRegexpMatches(self, text, unexpected_regexp, msg=None):
|
|
"""Fail the test if the text matches the regular expression."""
|
|
if isinstance(unexpected_regexp, (str, bytes)):
|
|
unexpected_regexp = re.compile(unexpected_regexp)
|
|
match = unexpected_regexp.search(text)
|
|
if match:
|
|
msg = msg or "Regexp matched"
|
|
msg = '%s: %r matches %r in %r' % (msg,
|
|
text[match.start():match.end()],
|
|
unexpected_regexp.pattern,
|
|
text)
|
|
raise self.failureException(msg)
|
|
|
|
|
|
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
|