1438 lines
55 KiB
Python
1438 lines
55 KiB
Python
"""Test case implementation"""
|
|
|
|
import sys
|
|
import functools
|
|
import difflib
|
|
import pprint
|
|
import re
|
|
import warnings
|
|
import collections
|
|
import contextlib
|
|
import traceback
|
|
import types
|
|
|
|
from . import result
|
|
from .util import (strclass, safe_repr, _count_diff_all_purpose,
|
|
_count_diff_hashable, _common_shorten_repr)
|
|
|
|
__unittest = True
|
|
|
|
_subtest_msg_sentinel = object()
|
|
|
|
DIFF_OMITTED = ('\nDiff is %s characters long. '
|
|
'Set self.maxDiff to None to see it.')
|
|
|
|
class SkipTest(Exception):
|
|
"""
|
|
Raise this exception in a test to skip it.
|
|
|
|
Usually you can use TestCase.skipTest() or one of the skipping decorators
|
|
instead of raising this directly.
|
|
"""
|
|
|
|
class _ShouldStop(Exception):
|
|
"""
|
|
The test should stop.
|
|
"""
|
|
|
|
class _UnexpectedSuccess(Exception):
|
|
"""
|
|
The test was supposed to fail, but it didn't!
|
|
"""
|
|
|
|
|
|
class _Outcome(object):
|
|
def __init__(self, result=None):
|
|
self.expecting_failure = False
|
|
self.result = result
|
|
self.result_supports_subtests = hasattr(result, "addSubTest")
|
|
self.success = True
|
|
self.skipped = []
|
|
self.expectedFailure = None
|
|
self.errors = []
|
|
|
|
@contextlib.contextmanager
|
|
def testPartExecutor(self, test_case, isTest=False):
|
|
old_success = self.success
|
|
self.success = True
|
|
try:
|
|
yield
|
|
except KeyboardInterrupt:
|
|
raise
|
|
except SkipTest as e:
|
|
self.success = False
|
|
self.skipped.append((test_case, str(e)))
|
|
except _ShouldStop:
|
|
pass
|
|
except:
|
|
exc_info = sys.exc_info()
|
|
if self.expecting_failure:
|
|
self.expectedFailure = exc_info
|
|
else:
|
|
self.success = False
|
|
self.errors.append((test_case, exc_info))
|
|
# explicitly break a reference cycle:
|
|
# exc_info -> frame -> exc_info
|
|
exc_info = None
|
|
else:
|
|
if self.result_supports_subtests and self.success:
|
|
self.errors.append((test_case, None))
|
|
finally:
|
|
self.success = self.success and old_success
|
|
|
|
|
|
def _id(obj):
|
|
return obj
|
|
|
|
|
|
_module_cleanups = []
|
|
def addModuleCleanup(function, /, *args, **kwargs):
|
|
"""Same as addCleanup, except the cleanup items are called even if
|
|
setUpModule fails (unlike tearDownModule)."""
|
|
_module_cleanups.append((function, args, kwargs))
|
|
|
|
|
|
def doModuleCleanups():
|
|
"""Execute all module cleanup functions. Normally called for you after
|
|
tearDownModule."""
|
|
exceptions = []
|
|
while _module_cleanups:
|
|
function, args, kwargs = _module_cleanups.pop()
|
|
try:
|
|
function(*args, **kwargs)
|
|
except Exception as exc:
|
|
exceptions.append(exc)
|
|
if exceptions:
|
|
# Swallows all but first exception. If a multi-exception handler
|
|
# gets written we should use that here instead.
|
|
raise exceptions[0]
|
|
|
|
|
|
def skip(reason):
|
|
"""
|
|
Unconditionally skip a test.
|
|
"""
|
|
def decorator(test_item):
|
|
if not isinstance(test_item, type):
|
|
@functools.wraps(test_item)
|
|
def skip_wrapper(*args, **kwargs):
|
|
raise SkipTest(reason)
|
|
test_item = skip_wrapper
|
|
|
|
test_item.__unittest_skip__ = True
|
|
test_item.__unittest_skip_why__ = reason
|
|
return test_item
|
|
if isinstance(reason, types.FunctionType):
|
|
test_item = reason
|
|
reason = ''
|
|
return decorator(test_item)
|
|
return decorator
|
|
|
|
def skipIf(condition, reason):
|
|
"""
|
|
Skip a test if the condition is true.
|
|
"""
|
|
if condition:
|
|
return skip(reason)
|
|
return _id
|
|
|
|
def skipUnless(condition, reason):
|
|
"""
|
|
Skip a test unless the condition is true.
|
|
"""
|
|
if not condition:
|
|
return skip(reason)
|
|
return _id
|
|
|
|
def expectedFailure(test_item):
|
|
test_item.__unittest_expecting_failure__ = True
|
|
return test_item
|
|
|
|
def _is_subtype(expected, basetype):
|
|
if isinstance(expected, tuple):
|
|
return all(_is_subtype(e, basetype) for e in expected)
|
|
return isinstance(expected, type) and issubclass(expected, basetype)
|
|
|
|
class _BaseTestCaseContext:
|
|
|
|
def __init__(self, test_case):
|
|
self.test_case = test_case
|
|
|
|
def _raiseFailure(self, standardMsg):
|
|
msg = self.test_case._formatMessage(self.msg, standardMsg)
|
|
raise self.test_case.failureException(msg)
|
|
|
|
class _AssertRaisesBaseContext(_BaseTestCaseContext):
|
|
|
|
def __init__(self, expected, test_case, expected_regex=None):
|
|
_BaseTestCaseContext.__init__(self, test_case)
|
|
self.expected = expected
|
|
self.test_case = test_case
|
|
if expected_regex is not None:
|
|
expected_regex = re.compile(expected_regex)
|
|
self.expected_regex = expected_regex
|
|
self.obj_name = None
|
|
self.msg = None
|
|
|
|
def handle(self, name, args, kwargs):
|
|
"""
|
|
If args is empty, assertRaises/Warns is being used as a
|
|
context manager, so check for a 'msg' kwarg and return self.
|
|
If args is not empty, call a callable passing positional and keyword
|
|
arguments.
|
|
"""
|
|
try:
|
|
if not _is_subtype(self.expected, self._base_type):
|
|
raise TypeError('%s() arg 1 must be %s' %
|
|
(name, self._base_type_str))
|
|
if not args:
|
|
self.msg = kwargs.pop('msg', None)
|
|
if kwargs:
|
|
raise TypeError('%r is an invalid keyword argument for '
|
|
'this function' % (next(iter(kwargs)),))
|
|
return self
|
|
|
|
callable_obj, *args = args
|
|
try:
|
|
self.obj_name = callable_obj.__name__
|
|
except AttributeError:
|
|
self.obj_name = str(callable_obj)
|
|
with self:
|
|
callable_obj(*args, **kwargs)
|
|
finally:
|
|
# bpo-23890: manually break a reference cycle
|
|
self = None
|
|
|
|
|
|
class _AssertRaisesContext(_AssertRaisesBaseContext):
|
|
"""A context manager used to implement TestCase.assertRaises* methods."""
|
|
|
|
_base_type = BaseException
|
|
_base_type_str = 'an exception type or tuple of exception types'
|
|
|
|
def __enter__(self):
|
|
return self
|
|
|
|
def __exit__(self, exc_type, exc_value, tb):
|
|
if exc_type is None:
|
|
try:
|
|
exc_name = self.expected.__name__
|
|
except AttributeError:
|
|
exc_name = str(self.expected)
|
|
if self.obj_name:
|
|
self._raiseFailure("{} not raised by {}".format(exc_name,
|
|
self.obj_name))
|
|
else:
|
|
self._raiseFailure("{} not raised".format(exc_name))
|
|
else:
|
|
traceback.clear_frames(tb)
|
|
if not issubclass(exc_type, self.expected):
|
|
# let unexpected exceptions pass through
|
|
return False
|
|
# store exception, without traceback, for later retrieval
|
|
self.exception = exc_value.with_traceback(None)
|
|
if self.expected_regex is None:
|
|
return True
|
|
|
|
expected_regex = self.expected_regex
|
|
if not expected_regex.search(str(exc_value)):
|
|
self._raiseFailure('"{}" does not match "{}"'.format(
|
|
expected_regex.pattern, str(exc_value)))
|
|
return True
|
|
|
|
__class_getitem__ = classmethod(types.GenericAlias)
|
|
|
|
|
|
class _AssertWarnsContext(_AssertRaisesBaseContext):
|
|
"""A context manager used to implement TestCase.assertWarns* methods."""
|
|
|
|
_base_type = Warning
|
|
_base_type_str = 'a warning type or tuple of warning types'
|
|
|
|
def __enter__(self):
|
|
# The __warningregistry__'s need to be in a pristine state for tests
|
|
# to work properly.
|
|
for v in list(sys.modules.values()):
|
|
if getattr(v, '__warningregistry__', None):
|
|
v.__warningregistry__ = {}
|
|
self.warnings_manager = warnings.catch_warnings(record=True)
|
|
self.warnings = self.warnings_manager.__enter__()
|
|
warnings.simplefilter("always", self.expected)
|
|
return self
|
|
|
|
def __exit__(self, exc_type, exc_value, tb):
|
|
self.warnings_manager.__exit__(exc_type, exc_value, tb)
|
|
if exc_type is not None:
|
|
# let unexpected exceptions pass through
|
|
return
|
|
try:
|
|
exc_name = self.expected.__name__
|
|
except AttributeError:
|
|
exc_name = str(self.expected)
|
|
first_matching = None
|
|
for m in self.warnings:
|
|
w = m.message
|
|
if not isinstance(w, self.expected):
|
|
continue
|
|
if first_matching is None:
|
|
first_matching = w
|
|
if (self.expected_regex is not None and
|
|
not self.expected_regex.search(str(w))):
|
|
continue
|
|
# store warning for later retrieval
|
|
self.warning = w
|
|
self.filename = m.filename
|
|
self.lineno = m.lineno
|
|
return
|
|
# Now we simply try to choose a helpful failure message
|
|
if first_matching is not None:
|
|
self._raiseFailure('"{}" does not match "{}"'.format(
|
|
self.expected_regex.pattern, str(first_matching)))
|
|
if self.obj_name:
|
|
self._raiseFailure("{} not triggered by {}".format(exc_name,
|
|
self.obj_name))
|
|
else:
|
|
self._raiseFailure("{} not triggered".format(exc_name))
|
|
|
|
|
|
|
|
class _OrderedChainMap(collections.ChainMap):
|
|
def __iter__(self):
|
|
seen = set()
|
|
for mapping in self.maps:
|
|
for k in mapping:
|
|
if k not in seen:
|
|
seen.add(k)
|
|
yield k
|
|
|
|
|
|
class TestCase(object):
|
|
"""A class whose instances are single test cases.
|
|
|
|
By default, the test code itself should be placed in a method named
|
|
'runTest'.
|
|
|
|
If the fixture may be used for many test cases, create as
|
|
many test methods as are needed. When instantiating such a TestCase
|
|
subclass, specify in the constructor arguments the name of the test method
|
|
that the instance is to execute.
|
|
|
|
Test authors should subclass TestCase for their own tests. Construction
|
|
and deconstruction of the test's environment ('fixture') can be
|
|
implemented by overriding the 'setUp' and 'tearDown' methods respectively.
|
|
|
|
If it is necessary to override the __init__ method, the base class
|
|
__init__ method must always be called. It is important that subclasses
|
|
should not change the signature of their __init__ method, since instances
|
|
of the classes are instantiated automatically by parts of the framework
|
|
in order to be run.
|
|
|
|
When subclassing TestCase, you can set these attributes:
|
|
* failureException: determines which exception will be raised when
|
|
the instance's assertion methods fail; test methods raising this
|
|
exception will be deemed to have 'failed' rather than 'errored'.
|
|
* longMessage: determines whether long messages (including repr of
|
|
objects used in assert methods) will be printed on failure in *addition*
|
|
to any explicit message passed.
|
|
* maxDiff: sets the maximum length of a diff in failure messages
|
|
by assert methods using difflib. It is looked up as an instance
|
|
attribute so can be configured by individual tests if required.
|
|
"""
|
|
|
|
failureException = AssertionError
|
|
|
|
longMessage = True
|
|
|
|
maxDiff = 80*8
|
|
|
|
# If a string is longer than _diffThreshold, use normal comparison instead
|
|
# of difflib. See #11763.
|
|
_diffThreshold = 2**16
|
|
|
|
# Attribute used by TestSuite for classSetUp
|
|
|
|
_classSetupFailed = False
|
|
|
|
_class_cleanups = []
|
|
|
|
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))
|
|
|
|
@classmethod
|
|
def addClassCleanup(cls, function, /, *args, **kwargs):
|
|
"""Same as addCleanup, except the cleanup items are called even if
|
|
setUpClass fails (unlike tearDownClass)."""
|
|
cls._class_cleanups.append((function, args, kwargs))
|
|
|
|
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.strip().split("\n")[0].strip() if doc else 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=_subtest_msg_sentinel, **params):
|
|
"""Return a context manager that will return the enclosed block
|
|
of code in a subtest identified by the optional message and
|
|
keyword parameters. A failure in the subtest marks the test
|
|
case as failed but resumes execution at the end of the enclosed
|
|
block, allowing further test code to be executed.
|
|
"""
|
|
if self._outcome is None or not self._outcome.result_supports_subtests:
|
|
yield
|
|
return
|
|
parent = self._subtest
|
|
if parent is None:
|
|
params_map = _OrderedChainMap(params)
|
|
else:
|
|
params_map = parent.params.new_child(params)
|
|
self._subtest = _SubTest(self, msg, params_map)
|
|
try:
|
|
with self._outcome.testPartExecutor(self._subtest, isTest=True):
|
|
yield
|
|
if not self._outcome.success:
|
|
result = self._outcome.result
|
|
if result is not None and result.failfast:
|
|
raise _ShouldStop
|
|
elif self._outcome.expectedFailure:
|
|
# If the test is expecting a failure, we really want to
|
|
# stop now and register the expected failure.
|
|
raise _ShouldStop
|
|
finally:
|
|
self._subtest = parent
|
|
|
|
def _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 _callSetUp(self):
|
|
self.setUp()
|
|
|
|
def _callTestMethod(self, method):
|
|
method()
|
|
|
|
def _callTearDown(self):
|
|
self.tearDown()
|
|
|
|
def _callCleanup(self, function, /, *args, **kwargs):
|
|
function(*args, **kwargs)
|
|
|
|
def run(self, result=None):
|
|
orig_result = result
|
|
if result is None:
|
|
result = self.defaultTestResult()
|
|
startTestRun = getattr(result, 'startTestRun', None)
|
|
if startTestRun is not None:
|
|
startTestRun()
|
|
|
|
result.startTest(self)
|
|
|
|
testMethod = getattr(self, self._testMethodName)
|
|
if (getattr(self.__class__, "__unittest_skip__", False) or
|
|
getattr(testMethod, "__unittest_skip__", False)):
|
|
# If the class or method was skipped.
|
|
try:
|
|
skip_why = (getattr(self.__class__, '__unittest_skip_why__', '')
|
|
or getattr(testMethod, '__unittest_skip_why__', ''))
|
|
self._addSkip(result, self, skip_why)
|
|
finally:
|
|
result.stopTest(self)
|
|
return
|
|
expecting_failure_method = getattr(testMethod,
|
|
"__unittest_expecting_failure__", False)
|
|
expecting_failure_class = getattr(self,
|
|
"__unittest_expecting_failure__", False)
|
|
expecting_failure = expecting_failure_class or expecting_failure_method
|
|
outcome = _Outcome(result)
|
|
try:
|
|
self._outcome = outcome
|
|
|
|
with outcome.testPartExecutor(self):
|
|
self._callSetUp()
|
|
if outcome.success:
|
|
outcome.expecting_failure = expecting_failure
|
|
with outcome.testPartExecutor(self, isTest=True):
|
|
self._callTestMethod(testMethod)
|
|
outcome.expecting_failure = False
|
|
with outcome.testPartExecutor(self):
|
|
self._callTearDown()
|
|
|
|
self.doCleanups()
|
|
for test, reason in outcome.skipped:
|
|
self._addSkip(result, test, reason)
|
|
self._feedErrorsToResult(result, outcome.errors)
|
|
if outcome.success:
|
|
if expecting_failure:
|
|
if outcome.expectedFailure:
|
|
self._addExpectedFailure(result, outcome.expectedFailure)
|
|
else:
|
|
self._addUnexpectedSuccess(result)
|
|
else:
|
|
result.addSuccess(self)
|
|
return result
|
|
finally:
|
|
result.stopTest(self)
|
|
if orig_result is None:
|
|
stopTestRun = getattr(result, 'stopTestRun', None)
|
|
if stopTestRun is not None:
|
|
stopTestRun()
|
|
|
|
# explicitly break reference cycles:
|
|
# outcome.errors -> frame -> outcome -> outcome.errors
|
|
# outcome.expectedFailure -> frame -> outcome -> outcome.expectedFailure
|
|
outcome.errors.clear()
|
|
outcome.expectedFailure = None
|
|
|
|
# clear the outcome, no more needed
|
|
self._outcome = None
|
|
|
|
def doCleanups(self):
|
|
"""Execute all cleanup functions. Normally called for you after
|
|
tearDown."""
|
|
outcome = self._outcome or _Outcome()
|
|
while self._cleanups:
|
|
function, args, kwargs = self._cleanups.pop()
|
|
with outcome.testPartExecutor(self):
|
|
self._callCleanup(function, *args, **kwargs)
|
|
|
|
# return this for backwards compatibility
|
|
# even though we no longer use it internally
|
|
return outcome.success
|
|
|
|
@classmethod
|
|
def doClassCleanups(cls):
|
|
"""Execute all class cleanup functions. Normally called for you after
|
|
tearDownClass."""
|
|
cls.tearDown_exceptions = []
|
|
while cls._class_cleanups:
|
|
function, args, kwargs = cls._class_cleanups.pop()
|
|
try:
|
|
function(*args, **kwargs)
|
|
except Exception:
|
|
cls.tearDown_exceptions.append(sys.exc_info())
|
|
|
|
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, expected_exception, *args, **kwargs):
|
|
"""Fail unless an exception of class expected_exception is raised
|
|
by the callable when invoked with specified positional and
|
|
keyword arguments. If a different type of exception is
|
|
raised, it will not be caught, and the test case will be
|
|
deemed to have suffered an error, exactly as for an
|
|
unexpected exception.
|
|
|
|
If called with the callable and arguments omitted, will return a
|
|
context object used like this::
|
|
|
|
with self.assertRaises(SomeException):
|
|
do_something()
|
|
|
|
An optional keyword argument 'msg' can be provided when assertRaises
|
|
is used as a context object.
|
|
|
|
The context manager keeps a reference to the exception as
|
|
the 'exception' attribute. This allows you to inspect the
|
|
exception after the assertion::
|
|
|
|
with self.assertRaises(SomeException) as cm:
|
|
do_something()
|
|
the_exception = cm.exception
|
|
self.assertEqual(the_exception.error_code, 3)
|
|
"""
|
|
context = _AssertRaisesContext(expected_exception, self)
|
|
try:
|
|
return context.handle('assertRaises', args, kwargs)
|
|
finally:
|
|
# bpo-23890: manually break a reference cycle
|
|
context = None
|
|
|
|
def assertWarns(self, expected_warning, *args, **kwargs):
|
|
"""Fail unless a warning of class warnClass is triggered
|
|
by the callable when invoked with specified positional and
|
|
keyword arguments. If a different type of warning is
|
|
triggered, it will not be handled: depending on the other
|
|
warning filtering rules in effect, it might be silenced, printed
|
|
out, or raised as an exception.
|
|
|
|
If called with the callable and arguments omitted, will return a
|
|
context object used like this::
|
|
|
|
with self.assertWarns(SomeWarning):
|
|
do_something()
|
|
|
|
An optional keyword argument 'msg' can be provided when assertWarns
|
|
is used as a context object.
|
|
|
|
The context manager keeps a reference to the first matching
|
|
warning as the 'warning' attribute; similarly, the 'filename'
|
|
and 'lineno' attributes give you information about the line
|
|
of Python code from which the warning was triggered.
|
|
This allows you to inspect the warning after the assertion::
|
|
|
|
with self.assertWarns(SomeWarning) as cm:
|
|
do_something()
|
|
the_warning = cm.warning
|
|
self.assertEqual(the_warning.some_attribute, 147)
|
|
"""
|
|
context = _AssertWarnsContext(expected_warning, self)
|
|
return context.handle('assertWarns', args, kwargs)
|
|
|
|
def 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'])
|
|
"""
|
|
# Lazy import to avoid importing logging if it is not needed.
|
|
from ._log import _AssertLogsContext
|
|
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
|
|
difference between the two objects is more than the given
|
|
delta.
|
|
|
|
Note that decimal places (from zero) are usually not the same
|
|
as significant digits (measured from the most significant digit).
|
|
|
|
If the two objects compare equal then they will automatically
|
|
compare almost equal.
|
|
"""
|
|
if first == second:
|
|
# shortcut
|
|
return
|
|
if delta is not None and places is not None:
|
|
raise TypeError("specify delta or places not both")
|
|
|
|
diff = abs(first - second)
|
|
if delta is not None:
|
|
if diff <= delta:
|
|
return
|
|
|
|
standardMsg = '%s != %s within %s delta (%s difference)' % (
|
|
safe_repr(first),
|
|
safe_repr(second),
|
|
safe_repr(delta),
|
|
safe_repr(diff))
|
|
else:
|
|
if places is None:
|
|
places = 7
|
|
|
|
if round(diff, places) == 0:
|
|
return
|
|
|
|
standardMsg = '%s != %s within %r places (%s difference)' % (
|
|
safe_repr(first),
|
|
safe_repr(second),
|
|
places,
|
|
safe_repr(diff))
|
|
msg = self._formatMessage(msg, standardMsg)
|
|
raise self.failureException(msg)
|
|
|
|
def assertNotAlmostEqual(self, first, second, places=None, msg=None,
|
|
delta=None):
|
|
"""Fail if the two objects are equal as determined by their
|
|
difference rounded to the given number of decimal places
|
|
(default 7) and comparing to zero, or by comparing that the
|
|
difference between the two objects is less than the given delta.
|
|
|
|
Note that decimal places (from zero) are usually not the same
|
|
as significant digits (measured from the most significant digit).
|
|
|
|
Objects that are equal automatically fail.
|
|
"""
|
|
if delta is not None and places is not None:
|
|
raise TypeError("specify delta or places not both")
|
|
diff = abs(first - second)
|
|
if delta is not None:
|
|
if not (first == second) and diff > delta:
|
|
return
|
|
standardMsg = '%s == %s within %s delta (%s difference)' % (
|
|
safe_repr(first),
|
|
safe_repr(second),
|
|
safe_repr(delta),
|
|
safe_repr(diff))
|
|
else:
|
|
if places is None:
|
|
places = 7
|
|
if not (first == second) and round(diff, places) != 0:
|
|
return
|
|
standardMsg = '%s == %s within %r places' % (safe_repr(first),
|
|
safe_repr(second),
|
|
places)
|
|
|
|
msg = self._formatMessage(msg, standardMsg)
|
|
raise self.failureException(msg)
|
|
|
|
def assertSequenceEqual(self, seq1, seq2, msg=None, seq_type=None):
|
|
"""An equality assertion for ordered sequences (like lists and tuples).
|
|
|
|
For the purposes of this function, a valid ordered sequence type is one
|
|
which can be indexed, has a length, and has an equality operator.
|
|
|
|
Args:
|
|
seq1: The first sequence to compare.
|
|
seq2: The second sequence to compare.
|
|
seq_type: The expected datatype of the sequences, or None if no
|
|
datatype should be enforced.
|
|
msg: Optional message to use on failure instead of a list of
|
|
differences.
|
|
"""
|
|
if seq_type is not None:
|
|
seq_type_name = seq_type.__name__
|
|
if not isinstance(seq1, seq_type):
|
|
raise self.failureException('First sequence is not a %s: %s'
|
|
% (seq_type_name, safe_repr(seq1)))
|
|
if not isinstance(seq2, seq_type):
|
|
raise self.failureException('Second sequence is not a %s: %s'
|
|
% (seq_type_name, safe_repr(seq2)))
|
|
else:
|
|
seq_type_name = "sequence"
|
|
|
|
differing = None
|
|
try:
|
|
len1 = len(seq1)
|
|
except (TypeError, NotImplementedError):
|
|
differing = 'First %s has no length. Non-sequence?' % (
|
|
seq_type_name)
|
|
|
|
if differing is None:
|
|
try:
|
|
len2 = len(seq2)
|
|
except (TypeError, NotImplementedError):
|
|
differing = 'Second %s has no length. Non-sequence?' % (
|
|
seq_type_name)
|
|
|
|
if differing is None:
|
|
if seq1 == seq2:
|
|
return
|
|
|
|
differing = '%ss differ: %s != %s\n' % (
|
|
(seq_type_name.capitalize(),) +
|
|
_common_shorten_repr(seq1, seq2))
|
|
|
|
for i in range(min(len1, len2)):
|
|
try:
|
|
item1 = seq1[i]
|
|
except (TypeError, IndexError, NotImplementedError):
|
|
differing += ('\nUnable to index element %d of first %s\n' %
|
|
(i, seq_type_name))
|
|
break
|
|
|
|
try:
|
|
item2 = seq2[i]
|
|
except (TypeError, IndexError, NotImplementedError):
|
|
differing += ('\nUnable to index element %d of second %s\n' %
|
|
(i, seq_type_name))
|
|
break
|
|
|
|
if item1 != item2:
|
|
differing += ('\nFirst differing element %d:\n%s\n%s\n' %
|
|
((i,) + _common_shorten_repr(item1, item2)))
|
|
break
|
|
else:
|
|
if (len1 == len2 and seq_type is None and
|
|
type(seq1) != type(seq2)):
|
|
# The sequences are the same, but have differing types.
|
|
return
|
|
|
|
if len1 > len2:
|
|
differing += ('\nFirst %s contains %d additional '
|
|
'elements.\n' % (seq_type_name, len1 - len2))
|
|
try:
|
|
differing += ('First extra element %d:\n%s\n' %
|
|
(len2, safe_repr(seq1[len2])))
|
|
except (TypeError, IndexError, NotImplementedError):
|
|
differing += ('Unable to index element %d '
|
|
'of first %s\n' % (len2, seq_type_name))
|
|
elif len1 < len2:
|
|
differing += ('\nSecond %s contains %d additional '
|
|
'elements.\n' % (seq_type_name, len2 - len1))
|
|
try:
|
|
differing += ('First extra element %d:\n%s\n' %
|
|
(len1, safe_repr(seq2[len1])))
|
|
except (TypeError, IndexError, NotImplementedError):
|
|
differing += ('Unable to index element %d '
|
|
'of second %s\n' % (len1, seq_type_name))
|
|
standardMsg = differing
|
|
diffMsg = '\n' + '\n'.join(
|
|
difflib.ndiff(pprint.pformat(seq1).splitlines(),
|
|
pprint.pformat(seq2).splitlines()))
|
|
|
|
standardMsg = self._truncateMessage(standardMsg, diffMsg)
|
|
msg = self._formatMessage(msg, standardMsg)
|
|
self.fail(msg)
|
|
|
|
def _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):
|
|
"""Asserts that two iterables have the same elements, the same number of
|
|
times, without regard to order.
|
|
|
|
self.assertEqual(Counter(list(first)),
|
|
Counter(list(second)))
|
|
|
|
Example:
|
|
- [0, 1, 1] and [1, 0, 1] compare equal.
|
|
- [0, 0, 1] and [0, 1] compare unequal.
|
|
|
|
"""
|
|
first_seq, second_seq = list(first), list(second)
|
|
try:
|
|
first = collections.Counter(first_seq)
|
|
second = collections.Counter(second_seq)
|
|
except TypeError:
|
|
# Handle case with unhashable elements
|
|
differences = _count_diff_all_purpose(first_seq, second_seq)
|
|
else:
|
|
if first == second:
|
|
return
|
|
differences = _count_diff_hashable(first_seq, second_seq)
|
|
|
|
if differences:
|
|
standardMsg = 'Element counts were not equal:\n'
|
|
lines = ['First has %d, Second has %d: %r' % diff for diff in differences]
|
|
diffMsg = '\n'.join(lines)
|
|
standardMsg = self._truncateMessage(standardMsg, diffMsg)
|
|
msg = self._formatMessage(msg, standardMsg)
|
|
self.fail(msg)
|
|
|
|
def 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,
|
|
*args, **kwargs):
|
|
"""Asserts that the message in a raised exception matches a regex.
|
|
|
|
Args:
|
|
expected_exception: Exception class expected to be raised.
|
|
expected_regex: Regex (re.Pattern object or string) expected
|
|
to be found in error message.
|
|
args: Function to be called and extra positional args.
|
|
kwargs: Extra kwargs.
|
|
msg: Optional message used in case of failure. Can only be used
|
|
when assertRaisesRegex is used as a context manager.
|
|
"""
|
|
context = _AssertRaisesContext(expected_exception, self, expected_regex)
|
|
return context.handle('assertRaisesRegex', args, kwargs)
|
|
|
|
def assertWarnsRegex(self, expected_warning, expected_regex,
|
|
*args, **kwargs):
|
|
"""Asserts that the message in a triggered warning matches a regexp.
|
|
Basic functioning is similar to assertWarns() with the addition
|
|
that only warnings whose messages also match the regular expression
|
|
are considered successful matches.
|
|
|
|
Args:
|
|
expected_warning: Warning class expected to be triggered.
|
|
expected_regex: Regex (re.Pattern object or string) expected
|
|
to be found in error message.
|
|
args: Function to be called and extra positional args.
|
|
kwargs: Extra kwargs.
|
|
msg: Optional message used in case of failure. Can only be used
|
|
when assertWarnsRegex is used as a context manager.
|
|
"""
|
|
context = _AssertWarnsContext(expected_warning, self, expected_regex)
|
|
return context.handle('assertWarnsRegex', args, kwargs)
|
|
|
|
def assertRegex(self, text, expected_regex, msg=None):
|
|
"""Fail the test unless the text matches the regular expression."""
|
|
if isinstance(expected_regex, (str, bytes)):
|
|
assert expected_regex, "expected_regex must not be empty."
|
|
expected_regex = re.compile(expected_regex)
|
|
if not expected_regex.search(text):
|
|
standardMsg = "Regex didn't match: %r not found in %r" % (
|
|
expected_regex.pattern, text)
|
|
# _formatMessage ensures the longMessage option is respected
|
|
msg = self._formatMessage(msg, standardMsg)
|
|
raise self.failureException(msg)
|
|
|
|
def assertNotRegex(self, text, unexpected_regex, msg=None):
|
|
"""Fail the test if the text matches the regular expression."""
|
|
if isinstance(unexpected_regex, (str, bytes)):
|
|
unexpected_regex = re.compile(unexpected_regex)
|
|
match = unexpected_regex.search(text)
|
|
if match:
|
|
standardMsg = 'Regex matched: %r matches %r in %r' % (
|
|
text[match.start() : match.end()],
|
|
unexpected_regex.pattern,
|
|
text)
|
|
# _formatMessage ensures the longMessage option is respected
|
|
msg = self._formatMessage(msg, standardMsg)
|
|
raise self.failureException(msg)
|
|
|
|
|
|
def _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)
|
|
assertNotRegexpMatches = _deprecate(assertNotRegex)
|
|
|
|
|
|
|
|
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 __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 is not _subtest_msg_sentinel:
|
|
parts.append("[{}]".format(self._message))
|
|
if self.params:
|
|
params_desc = ', '.join(
|
|
"{}={!r}".format(k, v)
|
|
for (k, v) in 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())
|