mirror of https://github.com/python/cpython
1058 lines
41 KiB
Python
1058 lines
41 KiB
Python
"""Test case implementation"""
|
|
|
|
import sys
|
|
import functools
|
|
import difflib
|
|
import pprint
|
|
import re
|
|
import warnings
|
|
|
|
from . import result
|
|
from .util import (
|
|
strclass, safe_repr, sorted_list_difference, unorderable_list_difference
|
|
)
|
|
|
|
__unittest = True
|
|
|
|
|
|
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 TestResult.skip() or one of the skipping decorators
|
|
instead of raising this directly.
|
|
"""
|
|
pass
|
|
|
|
class _ExpectedFailure(Exception):
|
|
"""
|
|
Raise this when a test is expected to fail.
|
|
|
|
This is an implementation detail.
|
|
"""
|
|
|
|
def __init__(self, exc_info):
|
|
super(_ExpectedFailure, self).__init__()
|
|
self.exc_info = exc_info
|
|
|
|
class _UnexpectedSuccess(Exception):
|
|
"""
|
|
The test was supposed to fail, but it didn't!
|
|
"""
|
|
pass
|
|
|
|
def _id(obj):
|
|
return obj
|
|
|
|
def skip(reason):
|
|
"""
|
|
Unconditionally skip a test.
|
|
"""
|
|
def decorator(test_item):
|
|
if not (isinstance(test_item, type) and issubclass(test_item, TestCase)):
|
|
@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
|
|
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(func):
|
|
@functools.wraps(func)
|
|
def wrapper(*args, **kwargs):
|
|
try:
|
|
func(*args, **kwargs)
|
|
except Exception:
|
|
raise _ExpectedFailure(sys.exc_info())
|
|
raise _UnexpectedSuccess
|
|
return wrapper
|
|
|
|
|
|
class _AssertRaisesContext(object):
|
|
"""A context manager used to implement TestCase.assertRaises* methods."""
|
|
|
|
def __init__(self, expected, test_case, expected_regexp=None):
|
|
self.expected = expected
|
|
self.failureException = test_case.failureException
|
|
self.expected_regexp = expected_regexp
|
|
|
|
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)
|
|
raise self.failureException(
|
|
"{0} not raised".format(exc_name))
|
|
if not issubclass(exc_type, self.expected):
|
|
# let unexpected exceptions pass through
|
|
return False
|
|
self.exception = exc_value # store for later retrieval
|
|
if self.expected_regexp is None:
|
|
return True
|
|
|
|
expected_regexp = self.expected_regexp
|
|
if isinstance(expected_regexp, basestring):
|
|
expected_regexp = re.compile(expected_regexp)
|
|
if not expected_regexp.search(str(exc_value)):
|
|
raise self.failureException('"%s" does not match "%s"' %
|
|
(expected_regexp.pattern, str(exc_value)))
|
|
return True
|
|
|
|
|
|
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.
|
|
"""
|
|
|
|
# This attribute 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'
|
|
|
|
failureException = AssertionError
|
|
|
|
# This attribute determines whether long messages (including repr of
|
|
# objects used in assert methods) will be printed on failure in *addition*
|
|
# to any explicit message passed.
|
|
|
|
longMessage = False
|
|
|
|
# This attribute 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.
|
|
|
|
maxDiff = 80*8
|
|
|
|
# Attribute used by TestSuite for classSetUp
|
|
|
|
_classSetupFailed = False
|
|
|
|
def __init__(self, methodName='runTest'):
|
|
"""Create an instance of the class that will use the named test
|
|
method when executed. Raises a ValueError if the instance does
|
|
not have a method with the specified name.
|
|
"""
|
|
self._testMethodName = methodName
|
|
self._resultForDoCleanups = None
|
|
try:
|
|
testMethod = getattr(self, methodName)
|
|
except AttributeError:
|
|
raise ValueError("no such test method in %s: %s" %
|
|
(self.__class__, methodName))
|
|
self._testMethodDoc = testMethod.__doc__
|
|
self._cleanups = []
|
|
|
|
# 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, self.assertDictEqual)
|
|
self.addTypeEqualityFunc(list, self.assertListEqual)
|
|
self.addTypeEqualityFunc(tuple, self.assertTupleEqual)
|
|
self.addTypeEqualityFunc(set, self.assertSetEqual)
|
|
self.addTypeEqualityFunc(frozenset, self.assertSetEqual)
|
|
self.addTypeEqualityFunc(unicode, self.assertMultiLineEqual)
|
|
|
|
def addTypeEqualityFunc(self, typeobj, function):
|
|
"""Add a type specific assertEqual style function to compare a type.
|
|
|
|
This method is for use by TestCase subclasses that need to register
|
|
their own type equality functions to provide nicer error messages.
|
|
|
|
Args:
|
|
typeobj: The data type to call this function on when both values
|
|
are of the same type in assertEqual().
|
|
function: The callable taking two arguments and an optional
|
|
msg= argument that raises self.failureException with a
|
|
useful error message when the two arguments are not equal.
|
|
"""
|
|
self._type_equality_funcs[typeobj] = function
|
|
|
|
def addCleanup(self, function, *args, **kwargs):
|
|
"""Add a function, with arguments, to be called when the test is
|
|
completed. Functions added are called on a LIFO basis and are
|
|
called after tearDown on test failure or success.
|
|
|
|
Cleanup items are called even if setUp fails (unlike tearDown)."""
|
|
self._cleanups.append((function, args, kwargs))
|
|
|
|
def setUp(self):
|
|
"Hook method for setting up the test fixture before exercising it."
|
|
pass
|
|
|
|
def tearDown(self):
|
|
"Hook method for deconstructing the test fixture after testing it."
|
|
pass
|
|
|
|
@classmethod
|
|
def setUpClass(cls):
|
|
"Hook method for setting up class fixture before running tests in the class."
|
|
|
|
@classmethod
|
|
def tearDownClass(cls):
|
|
"Hook method for deconstructing the class fixture after running all tests in the class."
|
|
|
|
def countTestCases(self):
|
|
return 1
|
|
|
|
def defaultTestResult(self):
|
|
return result.TestResult()
|
|
|
|
def shortDescription(self):
|
|
"""Returns a one-line description of the test, or None if no
|
|
description has been provided.
|
|
|
|
The default implementation of this method returns the first line of
|
|
the specified test method's docstring.
|
|
"""
|
|
doc = self._testMethodDoc
|
|
return doc and doc.split("\n")[0].strip() or None
|
|
|
|
|
|
def id(self):
|
|
return "%s.%s" % (strclass(self.__class__), self._testMethodName)
|
|
|
|
def __eq__(self, other):
|
|
if type(self) is not type(other):
|
|
return NotImplemented
|
|
|
|
return self._testMethodName == other._testMethodName
|
|
|
|
def __ne__(self, other):
|
|
return not self == other
|
|
|
|
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, reason):
|
|
addSkip = getattr(result, 'addSkip', None)
|
|
if addSkip is not None:
|
|
addSkip(self, reason)
|
|
else:
|
|
warnings.warn("TestResult has no addSkip method, skips not reported",
|
|
RuntimeWarning, 2)
|
|
result.addSuccess(self)
|
|
|
|
def run(self, result=None):
|
|
orig_result = result
|
|
if result is None:
|
|
result = self.defaultTestResult()
|
|
startTestRun = getattr(result, 'startTestRun', None)
|
|
if startTestRun is not None:
|
|
startTestRun()
|
|
|
|
self._resultForDoCleanups = result
|
|
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, skip_why)
|
|
finally:
|
|
result.stopTest(self)
|
|
return
|
|
try:
|
|
success = False
|
|
try:
|
|
self.setUp()
|
|
except SkipTest as e:
|
|
self._addSkip(result, str(e))
|
|
except Exception:
|
|
result.addError(self, sys.exc_info())
|
|
else:
|
|
try:
|
|
testMethod()
|
|
except self.failureException:
|
|
result.addFailure(self, sys.exc_info())
|
|
except _ExpectedFailure as e:
|
|
addExpectedFailure = getattr(result, 'addExpectedFailure', None)
|
|
if addExpectedFailure is not None:
|
|
addExpectedFailure(self, e.exc_info)
|
|
else:
|
|
warnings.warn("TestResult has no addExpectedFailure method, reporting as passes",
|
|
RuntimeWarning)
|
|
result.addSuccess(self)
|
|
except _UnexpectedSuccess:
|
|
addUnexpectedSuccess = getattr(result, 'addUnexpectedSuccess', None)
|
|
if addUnexpectedSuccess is not None:
|
|
addUnexpectedSuccess(self)
|
|
else:
|
|
warnings.warn("TestResult has no addUnexpectedSuccess method, reporting as failures",
|
|
RuntimeWarning)
|
|
result.addFailure(self, sys.exc_info())
|
|
except SkipTest as e:
|
|
self._addSkip(result, str(e))
|
|
except Exception:
|
|
result.addError(self, sys.exc_info())
|
|
else:
|
|
success = True
|
|
|
|
try:
|
|
self.tearDown()
|
|
except Exception:
|
|
result.addError(self, sys.exc_info())
|
|
success = False
|
|
|
|
cleanUpSuccess = self.doCleanups()
|
|
success = success and cleanUpSuccess
|
|
if success:
|
|
result.addSuccess(self)
|
|
finally:
|
|
result.stopTest(self)
|
|
if orig_result is None:
|
|
stopTestRun = getattr(result, 'stopTestRun', None)
|
|
if stopTestRun is not None:
|
|
stopTestRun()
|
|
|
|
def doCleanups(self):
|
|
"""Execute all cleanup functions. Normally called for you after
|
|
tearDown."""
|
|
result = self._resultForDoCleanups
|
|
ok = True
|
|
while self._cleanups:
|
|
function, args, kwargs = self._cleanups.pop(-1)
|
|
try:
|
|
function(*args, **kwargs)
|
|
except Exception:
|
|
ok = False
|
|
result.addError(self, sys.exc_info())
|
|
return ok
|
|
|
|
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):
|
|
"Fail the test if the expression is true."
|
|
if expr:
|
|
msg = self._formatMessage(msg, "%s is not False" % safe_repr(expr))
|
|
raise self.failureException(msg)
|
|
|
|
def assertTrue(self, expr, msg=None):
|
|
"""Fail the test unless the expression is true."""
|
|
if not expr:
|
|
msg = self._formatMessage(msg, "%s is not True" % safe_repr(expr))
|
|
raise self.failureException(msg)
|
|
|
|
def _formatMessage(self, msg, standardMsg):
|
|
"""Honour the longMessage attribute when generating failure messages.
|
|
If longMessage is False this means:
|
|
* Use only an explicit message if it is provided
|
|
* Otherwise use the standard message for the assert
|
|
|
|
If longMessage is True:
|
|
* Use the standard message
|
|
* If an explicit message is provided, plus ' : ' and the explicit message
|
|
"""
|
|
if not self.longMessage:
|
|
return msg or standardMsg
|
|
if msg is None:
|
|
return standardMsg
|
|
try:
|
|
# don't switch to '{}' formatting in Python 2.X
|
|
# it changes the way unicode input is handled
|
|
return '%s : %s' % (standardMsg, msg)
|
|
except UnicodeDecodeError:
|
|
return '%s : %s' % (safe_repr(standardMsg), safe_repr(msg))
|
|
|
|
|
|
def assertRaises(self, excClass, callableObj=None, *args, **kwargs):
|
|
"""Fail unless an exception of class excClass is thrown
|
|
by callableObj when invoked with arguments args and keyword
|
|
arguments kwargs. If a different type of exception is
|
|
thrown, it will not be caught, and the test case will be
|
|
deemed to have suffered an error, exactly as for an
|
|
unexpected exception.
|
|
|
|
If called with callableObj omitted or None, will return a
|
|
context object used like this::
|
|
|
|
with self.assertRaises(SomeException):
|
|
do_something()
|
|
|
|
The context manager keeps a reference to the exception as
|
|
the 'exception' attribute. This allows you to inspect the
|
|
exception after the assertion::
|
|
|
|
with self.assertRaises(SomeException) as cm:
|
|
do_something()
|
|
the_exception = cm.exception
|
|
self.assertEqual(the_exception.error_code, 3)
|
|
"""
|
|
context = _AssertRaisesContext(excClass, self)
|
|
if callableObj is None:
|
|
return context
|
|
with context:
|
|
callableObj(*args, **kwargs)
|
|
|
|
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:
|
|
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' % (safe_repr(first), safe_repr(second))
|
|
msg = self._formatMessage(msg, standardMsg)
|
|
raise self.failureException(msg)
|
|
|
|
def assertEqual(self, first, second, msg=None):
|
|
"""Fail if the two objects are unequal as determined by the '=='
|
|
operator.
|
|
"""
|
|
assertion_func = self._getAssertEqualityFunc(first, second)
|
|
assertion_func(first, second, msg=msg)
|
|
|
|
def assertNotEqual(self, first, second, msg=None):
|
|
"""Fail if the two objects are equal as determined by the '=='
|
|
operator.
|
|
"""
|
|
if not first != second:
|
|
msg = self._formatMessage(msg, '%s == %s' % (safe_repr(first),
|
|
safe_repr(second)))
|
|
raise self.failureException(msg)
|
|
|
|
|
|
def assertAlmostEqual(self, first, second, places=None, msg=None, delta=None):
|
|
"""Fail if the two objects are unequal as determined by their
|
|
difference rounded to the given number of decimal places
|
|
(default 7) and comparing to zero, or by comparing that the
|
|
between the two objects is more than the given delta.
|
|
|
|
Note that decimal places (from zero) are usually not the same
|
|
as significant digits (measured from the most signficant digit).
|
|
|
|
If the two objects compare equal then they will automatically
|
|
compare almost equal.
|
|
"""
|
|
if first == second:
|
|
# shortcut
|
|
return
|
|
if delta is not None and places is not None:
|
|
raise TypeError("specify delta or places not both")
|
|
|
|
if delta is not None:
|
|
if abs(first - second) <= delta:
|
|
return
|
|
|
|
standardMsg = '%s != %s within %s delta' % (safe_repr(first),
|
|
safe_repr(second),
|
|
safe_repr(delta))
|
|
else:
|
|
if places is None:
|
|
places = 7
|
|
|
|
if round(abs(second-first), places) == 0:
|
|
return
|
|
|
|
standardMsg = '%s != %s within %r places' % (safe_repr(first),
|
|
safe_repr(second),
|
|
places)
|
|
msg = self._formatMessage(msg, standardMsg)
|
|
raise self.failureException(msg)
|
|
|
|
def assertNotAlmostEqual(self, first, second, places=None, msg=None, delta=None):
|
|
"""Fail if the two objects are equal as determined by their
|
|
difference rounded to the given number of decimal places
|
|
(default 7) and comparing to zero, or by comparing that the
|
|
between the two objects is less than the given delta.
|
|
|
|
Note that decimal places (from zero) are usually not the same
|
|
as significant digits (measured from the most signficant digit).
|
|
|
|
Objects that are equal automatically fail.
|
|
"""
|
|
if delta is not None and places is not None:
|
|
raise TypeError("specify delta or places not both")
|
|
if delta is not None:
|
|
if not (first == second) and abs(first - second) > delta:
|
|
return
|
|
standardMsg = '%s == %s within %s delta' % (safe_repr(first),
|
|
safe_repr(second),
|
|
safe_repr(delta))
|
|
else:
|
|
if places is None:
|
|
places = 7
|
|
if not (first == second) and round(abs(second-first), places) != 0:
|
|
return
|
|
standardMsg = '%s == %s within %r places' % (safe_repr(first),
|
|
safe_repr(second),
|
|
places)
|
|
|
|
msg = self._formatMessage(msg, standardMsg)
|
|
raise self.failureException(msg)
|
|
|
|
# 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__),
|
|
PendingDeprecationWarning, 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 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
|
|
|
|
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 xrange(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, e:
|
|
self.fail('invalid type when attempting set difference: %s' % e)
|
|
except AttributeError, e:
|
|
self.fail('first argument does not support set difference: %s' % e)
|
|
|
|
try:
|
|
difference2 = set2.difference(set1)
|
|
except TypeError, e:
|
|
self.fail('invalid type when attempting set difference: %s' % e)
|
|
except AttributeError, 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.iteritems():
|
|
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 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.
|
|
"""
|
|
with warnings.catch_warnings():
|
|
if sys.py3kwarning:
|
|
# Silence Py3k warning raised during the sorting
|
|
for _msg in ["(code|dict|type) inequality comparisons",
|
|
"builtin_function_or_method order comparisons",
|
|
"comparing unequal types"]:
|
|
warnings.filterwarnings("ignore", _msg, DeprecationWarning)
|
|
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, ignore_duplicate=False
|
|
)
|
|
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, basestring), (
|
|
'First argument is not a string'))
|
|
self.assert_(isinstance(second, basestring), (
|
|
'Second argument is not a string'))
|
|
|
|
if first != second:
|
|
firstlines = first.splitlines(True)
|
|
secondlines = second.splitlines(True)
|
|
if len(firstlines) == 1 and first.strip('\r\n') == first:
|
|
firstlines = [first + '\n']
|
|
secondlines = [second + '\n']
|
|
standardMsg = '%s != %s' % (safe_repr(first, True),
|
|
safe_repr(second, True))
|
|
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 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, 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, basestring):
|
|
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, basestring):
|
|
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
|