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cpython/Lib/test/test_unittest.py

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"""Test script for unittest.
By Collin Winter <collinw at gmail.com>
Still need testing:
TestCase.{assert,fail}* methods (some are tested implicitly)
"""
from test import test_support
import unittest
from unittest import TestCase
import types
### Support code
################################################################
class LoggingResult(unittest.TestResult):
def __init__(self, log):
self._events = log
super(LoggingResult, self).__init__()
def startTest(self, test):
self._events.append('startTest')
super(LoggingResult, self).startTest(test)
def stopTest(self, test):
self._events.append('stopTest')
super(LoggingResult, self).stopTest(test)
def addFailure(self, *args):
self._events.append('addFailure')
super(LoggingResult, self).addFailure(*args)
def addError(self, *args):
self._events.append('addError')
super(LoggingResult, self).addError(*args)
class TestEquality(object):
# Check for a valid __eq__ implementation
def test_eq(self):
for obj_1, obj_2 in self.eq_pairs:
self.assertEqual(obj_1, obj_2)
self.assertEqual(obj_2, obj_1)
# Check for a valid __ne__ implementation
def test_ne(self):
for obj_1, obj_2 in self.ne_pairs:
self.failIfEqual(obj_1, obj_2)
self.failIfEqual(obj_2, obj_1)
class TestHashing(object):
# Check for a valid __hash__ implementation
def test_hash(self):
for obj_1, obj_2 in self.eq_pairs:
try:
assert hash(obj_1) == hash(obj_2)
except KeyboardInterrupt:
raise
except AssertionError:
self.fail("%s and %s do not hash equal" % (obj_1, obj_2))
except Exception, e:
self.fail("Problem hashing %s and %s: %s" % (obj_1, obj_2, e))
for obj_1, obj_2 in self.ne_pairs:
try:
assert hash(obj_1) != hash(obj_2)
except KeyboardInterrupt:
raise
except AssertionError:
self.fail("%s and %s hash equal, but shouldn't" % (obj_1, obj_2))
except Exception, e:
self.fail("Problem hashing %s and %s: %s" % (obj_1, obj_2, e))
################################################################
### /Support code
class Test_TestLoader(TestCase):
### Tests for TestLoader.loadTestsFromTestCase
################################################################
# "Return a suite of all tests cases contained in the TestCase-derived
# class testCaseClass"
def test_loadTestsFromTestCase(self):
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
tests = unittest.TestSuite([Foo('test_1'), Foo('test_2')])
loader = unittest.TestLoader()
self.assertEqual(loader.loadTestsFromTestCase(Foo), tests)
# "Return a suite of all tests cases contained in the TestCase-derived
# class testCaseClass"
#
# Make sure it does the right thing even if no tests were found
def test_loadTestsFromTestCase__no_matches(self):
class Foo(unittest.TestCase):
def foo_bar(self): pass
empty_suite = unittest.TestSuite()
loader = unittest.TestLoader()
self.assertEqual(loader.loadTestsFromTestCase(Foo), empty_suite)
# "Return a suite of all tests cases contained in the TestCase-derived
# class testCaseClass"
#
# What happens if loadTestsFromTestCase() is given an object
# that isn't a subclass of TestCase? Specifically, what happens
# if testCaseClass is a subclass of TestSuite?
#
# This is checked for specifically in the code, so we better add a
# test for it.
def test_loadTestsFromTestCase__TestSuite_subclass(self):
class NotATestCase(unittest.TestSuite):
pass
loader = unittest.TestLoader()
try:
loader.loadTestsFromTestCase(NotATestCase)
except TypeError:
pass
else:
self.fail('Should raise TypeError')
# "Return a suite of all tests cases contained in the TestCase-derived
# class testCaseClass"
#
# Make sure loadTestsFromTestCase() picks up the default test method
# name (as specified by TestCase), even though the method name does
# not match the default TestLoader.testMethodPrefix string
def test_loadTestsFromTestCase__default_method_name(self):
class Foo(unittest.TestCase):
def runTest(self):
pass
loader = unittest.TestLoader()
# This has to be false for the test to succeed
self.failIf('runTest'.startswith(loader.testMethodPrefix))
suite = loader.loadTestsFromTestCase(Foo)
self.failUnless(isinstance(suite, loader.suiteClass))
self.assertEqual(list(suite), [Foo('runTest')])
################################################################
### /Tests for TestLoader.loadTestsFromTestCase
### Tests for TestLoader.loadTestsFromModule
################################################################
# "This method searches `module` for classes derived from TestCase"
def test_loadTestsFromModule__TestCase_subclass(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromModule(m)
self.failUnless(isinstance(suite, loader.suiteClass))
expected = [loader.suiteClass([MyTestCase('test')])]
self.assertEqual(list(suite), expected)
# "This method searches `module` for classes derived from TestCase"
#
# What happens if no tests are found (no TestCase instances)?
def test_loadTestsFromModule__no_TestCase_instances(self):
m = types.ModuleType('m')
loader = unittest.TestLoader()
suite = loader.loadTestsFromModule(m)
self.failUnless(isinstance(suite, loader.suiteClass))
self.assertEqual(list(suite), [])
# "This method searches `module` for classes derived from TestCase"
#
# What happens if no tests are found (TestCases instances, but no tests)?
def test_loadTestsFromModule__no_TestCase_tests(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromModule(m)
self.failUnless(isinstance(suite, loader.suiteClass))
self.assertEqual(list(suite), [loader.suiteClass()])
# "This method searches `module` for classes derived from TestCase"s
#
# What happens if loadTestsFromModule() is given something other
# than a module?
#
# XXX Currently, it succeeds anyway. This flexibility
# should either be documented or loadTestsFromModule() should
# raise a TypeError
#
# XXX Certain people are using this behaviour. We'll add a test for it
def test_loadTestsFromModule__not_a_module(self):
class MyTestCase(unittest.TestCase):
def test(self):
pass
class NotAModule(object):
test_2 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromModule(NotAModule)
reference = [unittest.TestSuite([MyTestCase('test')])]
self.assertEqual(list(suite), reference)
################################################################
### /Tests for TestLoader.loadTestsFromModule()
### Tests for TestLoader.loadTestsFromName()
################################################################
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# Is ValueError raised in response to an empty name?
def test_loadTestsFromName__empty_name(self):
loader = unittest.TestLoader()
try:
loader.loadTestsFromName('')
except ValueError, e:
self.assertEqual(str(e), "Empty module name")
else:
self.fail("TestLoader.loadTestsFromName failed to raise ValueError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# What happens when the name contains invalid characters?
def test_loadTestsFromName__malformed_name(self):
loader = unittest.TestLoader()
# XXX Should this raise ValueError or ImportError?
try:
loader.loadTestsFromName('abc () //')
except ValueError:
pass
except ImportError:
pass
else:
self.fail("TestLoader.loadTestsFromName failed to raise ValueError")
# "The specifier name is a ``dotted name'' that may resolve ... to a
# module"
#
# What happens when a module by that name can't be found?
def test_loadTestsFromName__unknown_module_name(self):
loader = unittest.TestLoader()
try:
loader.loadTestsFromName('sdasfasfasdf')
except ImportError, e:
self.assertEqual(str(e), "No module named sdasfasfasdf")
else:
self.fail("TestLoader.loadTestsFromName failed to raise ImportError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# What happens when the module is found, but the attribute can't?
def test_loadTestsFromName__unknown_attr_name(self):
loader = unittest.TestLoader()
try:
loader.loadTestsFromName('unittest.sdasfasfasdf')
except AttributeError, e:
self.assertEqual(str(e), "'module' object has no attribute 'sdasfasfasdf'")
else:
self.fail("TestLoader.loadTestsFromName failed to raise AttributeError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# What happens when we provide the module, but the attribute can't be
# found?
def test_loadTestsFromName__relative_unknown_name(self):
loader = unittest.TestLoader()
try:
loader.loadTestsFromName('sdasfasfasdf', unittest)
except AttributeError, e:
self.assertEqual(str(e), "'module' object has no attribute 'sdasfasfasdf'")
else:
self.fail("TestLoader.loadTestsFromName failed to raise AttributeError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
# ...
# "The method optionally resolves name relative to the given module"
#
# Does loadTestsFromName raise ValueError when passed an empty
# name relative to a provided module?
#
# XXX Should probably raise a ValueError instead of an AttributeError
def test_loadTestsFromName__relative_empty_name(self):
loader = unittest.TestLoader()
try:
loader.loadTestsFromName('', unittest)
except AttributeError, e:
pass
else:
self.fail("Failed to raise AttributeError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
# ...
# "The method optionally resolves name relative to the given module"
#
# What happens when an impossible name is given, relative to the provided
# `module`?
def test_loadTestsFromName__relative_malformed_name(self):
loader = unittest.TestLoader()
# XXX Should this raise AttributeError or ValueError?
try:
loader.loadTestsFromName('abc () //', unittest)
except ValueError:
pass
except AttributeError:
pass
else:
self.fail("TestLoader.loadTestsFromName failed to raise ValueError")
# "The method optionally resolves name relative to the given module"
#
# Does loadTestsFromName raise TypeError when the `module` argument
# isn't a module object?
#
# XXX Accepts the not-a-module object, ignorning the object's type
# This should raise an exception or the method name should be changed
#
# XXX Some people are relying on this, so keep it for now
def test_loadTestsFromName__relative_not_a_module(self):
class MyTestCase(unittest.TestCase):
def test(self):
pass
class NotAModule(object):
test_2 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('test_2', NotAModule)
reference = [MyTestCase('test')]
self.assertEqual(list(suite), reference)
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# Does it raise an exception if the name resolves to an invalid
# object?
def test_loadTestsFromName__relative_bad_object(self):
m = types.ModuleType('m')
m.testcase_1 = object()
loader = unittest.TestLoader()
try:
loader.loadTestsFromName('testcase_1', m)
except TypeError:
pass
else:
self.fail("Should have raised TypeError")
# "The specifier name is a ``dotted name'' that may
# resolve either to ... a test case class"
def test_loadTestsFromName__relative_TestCase_subclass(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('testcase_1', m)
self.failUnless(isinstance(suite, loader.suiteClass))
self.assertEqual(list(suite), [MyTestCase('test')])
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
def test_loadTestsFromName__relative_TestSuite(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testsuite = unittest.TestSuite([MyTestCase('test')])
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('testsuite', m)
self.failUnless(isinstance(suite, loader.suiteClass))
self.assertEqual(list(suite), [MyTestCase('test')])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a test method within a test case class"
def test_loadTestsFromName__relative_testmethod(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('testcase_1.test', m)
self.failUnless(isinstance(suite, loader.suiteClass))
self.assertEqual(list(suite), [MyTestCase('test')])
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# Does loadTestsFromName() raise the proper exception when trying to
# resolve "a test method within a test case class" that doesn't exist
# for the given name (relative to a provided module)?
def test_loadTestsFromName__relative_invalid_testmethod(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
try:
loader.loadTestsFromName('testcase_1.testfoo', m)
except AttributeError, e:
self.assertEqual(str(e), "type object 'MyTestCase' has no attribute 'testfoo'")
else:
self.fail("Failed to raise AttributeError")
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a ... TestSuite instance"
def test_loadTestsFromName__callable__TestSuite(self):
m = types.ModuleType('m')
testcase_1 = unittest.FunctionTestCase(lambda: None)
testcase_2 = unittest.FunctionTestCase(lambda: None)
def return_TestSuite():
return unittest.TestSuite([testcase_1, testcase_2])
m.return_TestSuite = return_TestSuite
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('return_TestSuite', m)
self.failUnless(isinstance(suite, loader.suiteClass))
self.assertEqual(list(suite), [testcase_1, testcase_2])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a TestCase ... instance"
def test_loadTestsFromName__callable__TestCase_instance(self):
m = types.ModuleType('m')
testcase_1 = unittest.FunctionTestCase(lambda: None)
def return_TestCase():
return testcase_1
m.return_TestCase = return_TestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromName('return_TestCase', m)
self.failUnless(isinstance(suite, loader.suiteClass))
self.assertEqual(list(suite), [testcase_1])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a TestCase or TestSuite instance"
#
# What happens if the callable returns something else?
def test_loadTestsFromName__callable__wrong_type(self):
m = types.ModuleType('m')
def return_wrong():
return 6
m.return_wrong = return_wrong
loader = unittest.TestLoader()
try:
suite = loader.loadTestsFromName('return_wrong', m)
except TypeError:
pass
else:
self.fail("TestLoader.loadTestsFromName failed to raise TypeError")
# "The specifier can refer to modules and packages which have not been
# imported; they will be imported as a side-effect"
def test_loadTestsFromName__module_not_loaded(self):
# We're going to try to load this module as a side-effect, so it
# better not be loaded before we try.
#
# Why pick audioop? Google shows it isn't used very often, so there's
# a good chance that it won't be imported when this test is run
module_name = 'audioop'
import sys
if module_name in sys.modules:
del sys.modules[module_name]
loader = unittest.TestLoader()
try:
suite = loader.loadTestsFromName(module_name)
self.failUnless(isinstance(suite, loader.suiteClass))
self.assertEqual(list(suite), [])
# audioop should now be loaded, thanks to loadTestsFromName()
self.failUnless(module_name in sys.modules)
finally:
if module_name in sys.modules:
del sys.modules[module_name]
################################################################
### Tests for TestLoader.loadTestsFromName()
### Tests for TestLoader.loadTestsFromNames()
################################################################
# "Similar to loadTestsFromName(), but takes a sequence of names rather
# than a single name."
#
# What happens if that sequence of names is empty?
def test_loadTestsFromNames__empty_name_list(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames([])
self.failUnless(isinstance(suite, loader.suiteClass))
self.assertEqual(list(suite), [])
# "Similar to loadTestsFromName(), but takes a sequence of names rather
# than a single name."
# ...
# "The method optionally resolves name relative to the given module"
#
# What happens if that sequence of names is empty?
#
# XXX Should this raise a ValueError or just return an empty TestSuite?
def test_loadTestsFromNames__relative_empty_name_list(self):
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames([], unittest)
self.failUnless(isinstance(suite, loader.suiteClass))
self.assertEqual(list(suite), [])
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# Is ValueError raised in response to an empty name?
def test_loadTestsFromNames__empty_name(self):
loader = unittest.TestLoader()
try:
loader.loadTestsFromNames([''])
except ValueError, e:
self.assertEqual(str(e), "Empty module name")
else:
self.fail("TestLoader.loadTestsFromNames failed to raise ValueError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# What happens when presented with an impossible module name?
def test_loadTestsFromNames__malformed_name(self):
loader = unittest.TestLoader()
# XXX Should this raise ValueError or ImportError?
try:
loader.loadTestsFromNames(['abc () //'])
except ValueError:
pass
except ImportError:
pass
else:
self.fail("TestLoader.loadTestsFromNames failed to raise ValueError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# What happens when no module can be found for the given name?
def test_loadTestsFromNames__unknown_module_name(self):
loader = unittest.TestLoader()
try:
loader.loadTestsFromNames(['sdasfasfasdf'])
except ImportError, e:
self.assertEqual(str(e), "No module named sdasfasfasdf")
else:
self.fail("TestLoader.loadTestsFromNames failed to raise ImportError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# What happens when the module can be found, but not the attribute?
def test_loadTestsFromNames__unknown_attr_name(self):
loader = unittest.TestLoader()
try:
loader.loadTestsFromNames(['unittest.sdasfasfasdf', 'unittest'])
except AttributeError, e:
self.assertEqual(str(e), "'module' object has no attribute 'sdasfasfasdf'")
else:
self.fail("TestLoader.loadTestsFromNames failed to raise AttributeError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
# ...
# "The method optionally resolves name relative to the given module"
#
# What happens when given an unknown attribute on a specified `module`
# argument?
def test_loadTestsFromNames__unknown_name_relative_1(self):
loader = unittest.TestLoader()
try:
loader.loadTestsFromNames(['sdasfasfasdf'], unittest)
except AttributeError, e:
self.assertEqual(str(e), "'module' object has no attribute 'sdasfasfasdf'")
else:
self.fail("TestLoader.loadTestsFromName failed to raise AttributeError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
# ...
# "The method optionally resolves name relative to the given module"
#
# Do unknown attributes (relative to a provided module) still raise an
# exception even in the presence of valid attribute names?
def test_loadTestsFromNames__unknown_name_relative_2(self):
loader = unittest.TestLoader()
try:
loader.loadTestsFromNames(['TestCase', 'sdasfasfasdf'], unittest)
except AttributeError, e:
self.assertEqual(str(e), "'module' object has no attribute 'sdasfasfasdf'")
else:
self.fail("TestLoader.loadTestsFromName failed to raise AttributeError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
# ...
# "The method optionally resolves name relative to the given module"
#
# What happens when faced with the empty string?
#
# XXX This currently raises AttributeError, though ValueError is probably
# more appropriate
def test_loadTestsFromNames__relative_empty_name(self):
loader = unittest.TestLoader()
try:
loader.loadTestsFromNames([''], unittest)
except AttributeError:
pass
else:
self.fail("Failed to raise ValueError")
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
# ...
# "The method optionally resolves name relative to the given module"
#
# What happens when presented with an impossible attribute name?
def test_loadTestsFromNames__relative_malformed_name(self):
loader = unittest.TestLoader()
# XXX Should this raise AttributeError or ValueError?
try:
loader.loadTestsFromNames(['abc () //'], unittest)
except AttributeError:
pass
except ValueError:
pass
else:
self.fail("TestLoader.loadTestsFromNames failed to raise ValueError")
# "The method optionally resolves name relative to the given module"
#
# Does loadTestsFromNames() make sure the provided `module` is in fact
# a module?
#
# XXX This validation is currently not done. This flexibility should
# either be documented or a TypeError should be raised.
def test_loadTestsFromNames__relative_not_a_module(self):
class MyTestCase(unittest.TestCase):
def test(self):
pass
class NotAModule(object):
test_2 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['test_2'], NotAModule)
reference = [unittest.TestSuite([MyTestCase('test')])]
self.assertEqual(list(suite), reference)
# "The specifier name is a ``dotted name'' that may resolve either to
# a module, a test case class, a TestSuite instance, a test method
# within a test case class, or a callable object which returns a
# TestCase or TestSuite instance."
#
# Does it raise an exception if the name resolves to an invalid
# object?
def test_loadTestsFromNames__relative_bad_object(self):
m = types.ModuleType('m')
m.testcase_1 = object()
loader = unittest.TestLoader()
try:
loader.loadTestsFromNames(['testcase_1'], m)
except TypeError:
pass
else:
self.fail("Should have raised TypeError")
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a test case class"
def test_loadTestsFromNames__relative_TestCase_subclass(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['testcase_1'], m)
self.failUnless(isinstance(suite, loader.suiteClass))
expected = loader.suiteClass([MyTestCase('test')])
self.assertEqual(list(suite), [expected])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a TestSuite instance"
def test_loadTestsFromNames__relative_TestSuite(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testsuite = unittest.TestSuite([MyTestCase('test')])
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['testsuite'], m)
self.failUnless(isinstance(suite, loader.suiteClass))
self.assertEqual(list(suite), [m.testsuite])
# "The specifier name is a ``dotted name'' that may resolve ... to ... a
# test method within a test case class"
def test_loadTestsFromNames__relative_testmethod(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['testcase_1.test'], m)
self.failUnless(isinstance(suite, loader.suiteClass))
ref_suite = unittest.TestSuite([MyTestCase('test')])
self.assertEqual(list(suite), [ref_suite])
# "The specifier name is a ``dotted name'' that may resolve ... to ... a
# test method within a test case class"
#
# Does the method gracefully handle names that initially look like they
# resolve to "a test method within a test case class" but don't?
def test_loadTestsFromNames__relative_invalid_testmethod(self):
m = types.ModuleType('m')
class MyTestCase(unittest.TestCase):
def test(self):
pass
m.testcase_1 = MyTestCase
loader = unittest.TestLoader()
try:
loader.loadTestsFromNames(['testcase_1.testfoo'], m)
except AttributeError, e:
self.assertEqual(str(e), "type object 'MyTestCase' has no attribute 'testfoo'")
else:
self.fail("Failed to raise AttributeError")
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a ... TestSuite instance"
def test_loadTestsFromNames__callable__TestSuite(self):
m = types.ModuleType('m')
testcase_1 = unittest.FunctionTestCase(lambda: None)
testcase_2 = unittest.FunctionTestCase(lambda: None)
def return_TestSuite():
return unittest.TestSuite([testcase_1, testcase_2])
m.return_TestSuite = return_TestSuite
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['return_TestSuite'], m)
self.failUnless(isinstance(suite, loader.suiteClass))
expected = unittest.TestSuite([testcase_1, testcase_2])
self.assertEqual(list(suite), [expected])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a TestCase ... instance"
def test_loadTestsFromNames__callable__TestCase_instance(self):
m = types.ModuleType('m')
testcase_1 = unittest.FunctionTestCase(lambda: None)
def return_TestCase():
return testcase_1
m.return_TestCase = return_TestCase
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['return_TestCase'], m)
self.failUnless(isinstance(suite, loader.suiteClass))
ref_suite = unittest.TestSuite([testcase_1])
self.assertEqual(list(suite), [ref_suite])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a TestCase or TestSuite instance"
#
# Are staticmethods handled correctly?
def test_loadTestsFromNames__callable__call_staticmethod(self):
m = types.ModuleType('m')
class Test1(unittest.TestCase):
def test(self):
pass
testcase_1 = Test1('test')
class Foo(unittest.TestCase):
@staticmethod
def foo():
return testcase_1
m.Foo = Foo
loader = unittest.TestLoader()
suite = loader.loadTestsFromNames(['Foo.foo'], m)
self.failUnless(isinstance(suite, loader.suiteClass))
ref_suite = unittest.TestSuite([testcase_1])
self.assertEqual(list(suite), [ref_suite])
# "The specifier name is a ``dotted name'' that may resolve ... to
# ... a callable object which returns a TestCase or TestSuite instance"
#
# What happens when the callable returns something else?
def test_loadTestsFromNames__callable__wrong_type(self):
m = types.ModuleType('m')
def return_wrong():
return 6
m.return_wrong = return_wrong
loader = unittest.TestLoader()
try:
suite = loader.loadTestsFromNames(['return_wrong'], m)
except TypeError:
pass
else:
self.fail("TestLoader.loadTestsFromNames failed to raise TypeError")
# "The specifier can refer to modules and packages which have not been
# imported; they will be imported as a side-effect"
def test_loadTestsFromNames__module_not_loaded(self):
# We're going to try to load this module as a side-effect, so it
# better not be loaded before we try.
#
# Why pick audioop? Google shows it isn't used very often, so there's
# a good chance that it won't be imported when this test is run
module_name = 'audioop'
import sys
if module_name in sys.modules:
del sys.modules[module_name]
loader = unittest.TestLoader()
try:
suite = loader.loadTestsFromNames([module_name])
self.failUnless(isinstance(suite, loader.suiteClass))
self.assertEqual(list(suite), [unittest.TestSuite()])
# audioop should now be loaded, thanks to loadTestsFromName()
self.failUnless(module_name in sys.modules)
finally:
if module_name in sys.modules:
del sys.modules[module_name]
################################################################
### /Tests for TestLoader.loadTestsFromNames()
### Tests for TestLoader.getTestCaseNames()
################################################################
# "Return a sorted sequence of method names found within testCaseClass"
#
# Test.foobar is defined to make sure getTestCaseNames() respects
# loader.testMethodPrefix
def test_getTestCaseNames(self):
class Test(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foobar(self): pass
loader = unittest.TestLoader()
self.assertEqual(loader.getTestCaseNames(Test), ['test_1', 'test_2'])
# "Return a sorted sequence of method names found within testCaseClass"
#
# Does getTestCaseNames() behave appropriately if no tests are found?
def test_getTestCaseNames__no_tests(self):
class Test(unittest.TestCase):
def foobar(self): pass
loader = unittest.TestLoader()
self.assertEqual(loader.getTestCaseNames(Test), [])
# "Return a sorted sequence of method names found within testCaseClass"
#
# Are not-TestCases handled gracefully?
#
# XXX This should raise a TypeError, not return a list
#
# XXX It's too late in the 2.5 release cycle to fix this, but it should
# probably be revisited for 2.6
def test_getTestCaseNames__not_a_TestCase(self):
class BadCase(int):
def test_foo(self):
pass
loader = unittest.TestLoader()
names = loader.getTestCaseNames(BadCase)
self.assertEqual(names, ['test_foo'])
# "Return a sorted sequence of method names found within testCaseClass"
#
# Make sure inherited names are handled.
#
# TestP.foobar is defined to make sure getTestCaseNames() respects
# loader.testMethodPrefix
def test_getTestCaseNames__inheritance(self):
class TestP(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foobar(self): pass
class TestC(TestP):
def test_1(self): pass
def test_3(self): pass
loader = unittest.TestLoader()
names = ['test_1', 'test_2', 'test_3']
self.assertEqual(loader.getTestCaseNames(TestC), names)
################################################################
### /Tests for TestLoader.getTestCaseNames()
### Tests for TestLoader.testMethodPrefix
################################################################
# "String giving the prefix of method names which will be interpreted as
# test methods"
#
# Implicit in the documentation is that testMethodPrefix is respected by
# all loadTestsFrom* methods.
def test_testMethodPrefix__loadTestsFromTestCase(self):
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
tests_1 = unittest.TestSuite([Foo('foo_bar')])
tests_2 = unittest.TestSuite([Foo('test_1'), Foo('test_2')])
loader = unittest.TestLoader()
loader.testMethodPrefix = 'foo'
self.assertEqual(loader.loadTestsFromTestCase(Foo), tests_1)
loader.testMethodPrefix = 'test'
self.assertEqual(loader.loadTestsFromTestCase(Foo), tests_2)
# "String giving the prefix of method names which will be interpreted as
# test methods"
#
# Implicit in the documentation is that testMethodPrefix is respected by
# all loadTestsFrom* methods.
def test_testMethodPrefix__loadTestsFromModule(self):
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
m.Foo = Foo
tests_1 = [unittest.TestSuite([Foo('foo_bar')])]
tests_2 = [unittest.TestSuite([Foo('test_1'), Foo('test_2')])]
loader = unittest.TestLoader()
loader.testMethodPrefix = 'foo'
self.assertEqual(list(loader.loadTestsFromModule(m)), tests_1)
loader.testMethodPrefix = 'test'
self.assertEqual(list(loader.loadTestsFromModule(m)), tests_2)
# "String giving the prefix of method names which will be interpreted as
# test methods"
#
# Implicit in the documentation is that testMethodPrefix is respected by
# all loadTestsFrom* methods.
def test_testMethodPrefix__loadTestsFromName(self):
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
m.Foo = Foo
tests_1 = unittest.TestSuite([Foo('foo_bar')])
tests_2 = unittest.TestSuite([Foo('test_1'), Foo('test_2')])
loader = unittest.TestLoader()
loader.testMethodPrefix = 'foo'
self.assertEqual(loader.loadTestsFromName('Foo', m), tests_1)
loader.testMethodPrefix = 'test'
self.assertEqual(loader.loadTestsFromName('Foo', m), tests_2)
# "String giving the prefix of method names which will be interpreted as
# test methods"
#
# Implicit in the documentation is that testMethodPrefix is respected by
# all loadTestsFrom* methods.
def test_testMethodPrefix__loadTestsFromNames(self):
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
m.Foo = Foo
tests_1 = unittest.TestSuite([unittest.TestSuite([Foo('foo_bar')])])
tests_2 = unittest.TestSuite([Foo('test_1'), Foo('test_2')])
tests_2 = unittest.TestSuite([tests_2])
loader = unittest.TestLoader()
loader.testMethodPrefix = 'foo'
self.assertEqual(loader.loadTestsFromNames(['Foo'], m), tests_1)
loader.testMethodPrefix = 'test'
self.assertEqual(loader.loadTestsFromNames(['Foo'], m), tests_2)
# "The default value is 'test'"
def test_testMethodPrefix__default_value(self):
loader = unittest.TestLoader()
self.failUnless(loader.testMethodPrefix == 'test')
################################################################
### /Tests for TestLoader.testMethodPrefix
### Tests for TestLoader.sortTestMethodsUsing
################################################################
# "Function to be used to compare method names when sorting them in
# getTestCaseNames() and all the loadTestsFromX() methods"
def test_sortTestMethodsUsing__loadTestsFromTestCase(self):
def reversed_cmp(x, y):
return -cmp(x, y)
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
loader = unittest.TestLoader()
loader.sortTestMethodsUsing = reversed_cmp
tests = loader.suiteClass([Foo('test_2'), Foo('test_1')])
self.assertEqual(loader.loadTestsFromTestCase(Foo), tests)
# "Function to be used to compare method names when sorting them in
# getTestCaseNames() and all the loadTestsFromX() methods"
def test_sortTestMethodsUsing__loadTestsFromModule(self):
def reversed_cmp(x, y):
return -cmp(x, y)
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
m.Foo = Foo
loader = unittest.TestLoader()
loader.sortTestMethodsUsing = reversed_cmp
tests = [loader.suiteClass([Foo('test_2'), Foo('test_1')])]
self.assertEqual(list(loader.loadTestsFromModule(m)), tests)
# "Function to be used to compare method names when sorting them in
# getTestCaseNames() and all the loadTestsFromX() methods"
def test_sortTestMethodsUsing__loadTestsFromName(self):
def reversed_cmp(x, y):
return -cmp(x, y)
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
m.Foo = Foo
loader = unittest.TestLoader()
loader.sortTestMethodsUsing = reversed_cmp
tests = loader.suiteClass([Foo('test_2'), Foo('test_1')])
self.assertEqual(loader.loadTestsFromName('Foo', m), tests)
# "Function to be used to compare method names when sorting them in
# getTestCaseNames() and all the loadTestsFromX() methods"
def test_sortTestMethodsUsing__loadTestsFromNames(self):
def reversed_cmp(x, y):
return -cmp(x, y)
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
m.Foo = Foo
loader = unittest.TestLoader()
loader.sortTestMethodsUsing = reversed_cmp
tests = [loader.suiteClass([Foo('test_2'), Foo('test_1')])]
self.assertEqual(list(loader.loadTestsFromNames(['Foo'], m)), tests)
# "Function to be used to compare method names when sorting them in
# getTestCaseNames()"
#
# Does it actually affect getTestCaseNames()?
def test_sortTestMethodsUsing__getTestCaseNames(self):
def reversed_cmp(x, y):
return -cmp(x, y)
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
loader = unittest.TestLoader()
loader.sortTestMethodsUsing = reversed_cmp
test_names = ['test_2', 'test_1']
self.assertEqual(loader.getTestCaseNames(Foo), test_names)
# "The default value is the built-in cmp() function"
def test_sortTestMethodsUsing__default_value(self):
loader = unittest.TestLoader()
self.failUnless(loader.sortTestMethodsUsing is cmp)
# "it can be set to None to disable the sort."
#
# XXX How is this different from reassigning cmp? Are the tests returned
# in a random order or something? This behaviour should die
def test_sortTestMethodsUsing__None(self):
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
loader = unittest.TestLoader()
loader.sortTestMethodsUsing = None
test_names = ['test_2', 'test_1']
self.assertEqual(set(loader.getTestCaseNames(Foo)), set(test_names))
################################################################
### /Tests for TestLoader.sortTestMethodsUsing
### Tests for TestLoader.suiteClass
################################################################
# "Callable object that constructs a test suite from a list of tests."
def test_suiteClass__loadTestsFromTestCase(self):
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
tests = [Foo('test_1'), Foo('test_2')]
loader = unittest.TestLoader()
loader.suiteClass = list
self.assertEqual(loader.loadTestsFromTestCase(Foo), tests)
# It is implicit in the documentation for TestLoader.suiteClass that
# all TestLoader.loadTestsFrom* methods respect it. Let's make sure
def test_suiteClass__loadTestsFromModule(self):
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
m.Foo = Foo
tests = [[Foo('test_1'), Foo('test_2')]]
loader = unittest.TestLoader()
loader.suiteClass = list
self.assertEqual(loader.loadTestsFromModule(m), tests)
# It is implicit in the documentation for TestLoader.suiteClass that
# all TestLoader.loadTestsFrom* methods respect it. Let's make sure
def test_suiteClass__loadTestsFromName(self):
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
m.Foo = Foo
tests = [Foo('test_1'), Foo('test_2')]
loader = unittest.TestLoader()
loader.suiteClass = list
self.assertEqual(loader.loadTestsFromName('Foo', m), tests)
# It is implicit in the documentation for TestLoader.suiteClass that
# all TestLoader.loadTestsFrom* methods respect it. Let's make sure
def test_suiteClass__loadTestsFromNames(self):
m = types.ModuleType('m')
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def foo_bar(self): pass
m.Foo = Foo
tests = [[Foo('test_1'), Foo('test_2')]]
loader = unittest.TestLoader()
loader.suiteClass = list
self.assertEqual(loader.loadTestsFromNames(['Foo'], m), tests)
# "The default value is the TestSuite class"
def test_suiteClass__default_value(self):
loader = unittest.TestLoader()
self.failUnless(loader.suiteClass is unittest.TestSuite)
################################################################
### /Tests for TestLoader.suiteClass
### Support code for Test_TestSuite
################################################################
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
def test_3(self): pass
def runTest(self): pass
def _mk_TestSuite(*names):
return unittest.TestSuite(Foo(n) for n in names)
################################################################
### /Support code for Test_TestSuite
class Test_TestSuite(TestCase, TestEquality):
### Set up attributes needed by inherited tests
################################################################
# Used by TestEquality.test_eq
eq_pairs = [(unittest.TestSuite(), unittest.TestSuite())
,(unittest.TestSuite(), unittest.TestSuite([]))
,(_mk_TestSuite('test_1'), _mk_TestSuite('test_1'))]
# Used by TestEquality.test_ne
ne_pairs = [(unittest.TestSuite(), _mk_TestSuite('test_1'))
,(unittest.TestSuite([]), _mk_TestSuite('test_1'))
,(_mk_TestSuite('test_1', 'test_2'), _mk_TestSuite('test_1', 'test_3'))
,(_mk_TestSuite('test_1'), _mk_TestSuite('test_2'))]
################################################################
### /Set up attributes needed by inherited tests
### Tests for TestSuite.__init__
################################################################
# "class TestSuite([tests])"
#
# The tests iterable should be optional
def test_init__tests_optional(self):
suite = unittest.TestSuite()
self.assertEqual(suite.countTestCases(), 0)
# "class TestSuite([tests])"
# ...
# "If tests is given, it must be an iterable of individual test cases
# or other test suites that will be used to build the suite initially"
#
# TestSuite should deal with empty tests iterables by allowing the
# creation of an empty suite
def test_init__empty_tests(self):
suite = unittest.TestSuite([])
self.assertEqual(suite.countTestCases(), 0)
# "class TestSuite([tests])"
# ...
# "If tests is given, it must be an iterable of individual test cases
# or other test suites that will be used to build the suite initially"
#
# TestSuite should allow any iterable to provide tests
def test_init__tests_from_any_iterable(self):
def tests():
yield unittest.FunctionTestCase(lambda: None)
yield unittest.FunctionTestCase(lambda: None)
suite_1 = unittest.TestSuite(tests())
self.assertEqual(suite_1.countTestCases(), 2)
suite_2 = unittest.TestSuite(suite_1)
self.assertEqual(suite_2.countTestCases(), 2)
suite_3 = unittest.TestSuite(set(suite_1))
self.assertEqual(suite_3.countTestCases(), 2)
# "class TestSuite([tests])"
# ...
# "If tests is given, it must be an iterable of individual test cases
# or other test suites that will be used to build the suite initially"
#
# Does TestSuite() also allow other TestSuite() instances to be present
# in the tests iterable?
def test_init__TestSuite_instances_in_tests(self):
def tests():
ftc = unittest.FunctionTestCase(lambda: None)
yield unittest.TestSuite([ftc])
yield unittest.FunctionTestCase(lambda: None)
suite = unittest.TestSuite(tests())
self.assertEqual(suite.countTestCases(), 2)
################################################################
### /Tests for TestSuite.__init__
# Container types should support the iter protocol
def test_iter(self):
test1 = unittest.FunctionTestCase(lambda: None)
test2 = unittest.FunctionTestCase(lambda: None)
suite = unittest.TestSuite((test1, test2))
self.assertEqual(list(suite), [test1, test2])
# "Return the number of tests represented by the this test object.
# ...this method is also implemented by the TestSuite class, which can
# return larger [greater than 1] values"
#
# Presumably an empty TestSuite returns 0?
def test_countTestCases_zero_simple(self):
suite = unittest.TestSuite()
self.assertEqual(suite.countTestCases(), 0)
# "Return the number of tests represented by the this test object.
# ...this method is also implemented by the TestSuite class, which can
# return larger [greater than 1] values"
#
# Presumably an empty TestSuite (even if it contains other empty
# TestSuite instances) returns 0?
def test_countTestCases_zero_nested(self):
class Test1(unittest.TestCase):
def test(self):
pass
suite = unittest.TestSuite([unittest.TestSuite()])
self.assertEqual(suite.countTestCases(), 0)
# "Return the number of tests represented by the this test object.
# ...this method is also implemented by the TestSuite class, which can
# return larger [greater than 1] values"
def test_countTestCases_simple(self):
test1 = unittest.FunctionTestCase(lambda: None)
test2 = unittest.FunctionTestCase(lambda: None)
suite = unittest.TestSuite((test1, test2))
self.assertEqual(suite.countTestCases(), 2)
# "Return the number of tests represented by the this test object.
# ...this method is also implemented by the TestSuite class, which can
# return larger [greater than 1] values"
#
# Make sure this holds for nested TestSuite instances, too
def test_countTestCases_nested(self):
class Test1(unittest.TestCase):
def test1(self): pass
def test2(self): pass
test2 = unittest.FunctionTestCase(lambda: None)
test3 = unittest.FunctionTestCase(lambda: None)
child = unittest.TestSuite((Test1('test2'), test2))
parent = unittest.TestSuite((test3, child, Test1('test1')))
self.assertEqual(parent.countTestCases(), 4)
# "Run the tests associated with this suite, collecting the result into
# the test result object passed as result."
#
# And if there are no tests? What then?
def test_run__empty_suite(self):
events = []
result = LoggingResult(events)
suite = unittest.TestSuite()
suite.run(result)
self.assertEqual(events, [])
# "Note that unlike TestCase.run(), TestSuite.run() requires the
# "result object to be passed in."
def test_run__requires_result(self):
suite = unittest.TestSuite()
try:
suite.run()
except TypeError:
pass
else:
self.fail("Failed to raise TypeError")
# "Run the tests associated with this suite, collecting the result into
# the test result object passed as result."
def test_run(self):
events = []
result = LoggingResult(events)
class LoggingCase(unittest.TestCase):
def run(self, result):
events.append('run %s' % self._testMethodName)
def test1(self): pass
def test2(self): pass
tests = [LoggingCase('test1'), LoggingCase('test2')]
unittest.TestSuite(tests).run(result)
self.assertEqual(events, ['run test1', 'run test2'])
# "Add a TestCase ... to the suite"
def test_addTest__TestCase(self):
class Foo(unittest.TestCase):
def test(self): pass
test = Foo('test')
suite = unittest.TestSuite()
suite.addTest(test)
self.assertEqual(suite.countTestCases(), 1)
self.assertEqual(list(suite), [test])
# "Add a ... TestSuite to the suite"
def test_addTest__TestSuite(self):
class Foo(unittest.TestCase):
def test(self): pass
suite_2 = unittest.TestSuite([Foo('test')])
suite = unittest.TestSuite()
suite.addTest(suite_2)
self.assertEqual(suite.countTestCases(), 1)
self.assertEqual(list(suite), [suite_2])
# "Add all the tests from an iterable of TestCase and TestSuite
# instances to this test suite."
#
# "This is equivalent to iterating over tests, calling addTest() for
# each element"
def test_addTests(self):
class Foo(unittest.TestCase):
def test_1(self): pass
def test_2(self): pass
test_1 = Foo('test_1')
test_2 = Foo('test_2')
inner_suite = unittest.TestSuite([test_2])
def gen():
yield test_1
yield test_2
yield inner_suite
suite_1 = unittest.TestSuite()
suite_1.addTests(gen())
self.assertEqual(list(suite_1), list(gen()))
# "This is equivalent to iterating over tests, calling addTest() for
# each element"
suite_2 = unittest.TestSuite()
for t in gen():
suite_2.addTest(t)
self.assertEqual(suite_1, suite_2)
# "Add all the tests from an iterable of TestCase and TestSuite
# instances to this test suite."
#
# What happens if it doesn't get an iterable?
def test_addTest__noniterable(self):
suite = unittest.TestSuite()
try:
suite.addTests(5)
except TypeError:
pass
else:
self.fail("Failed to raise TypeError")
def test_addTest__noncallable(self):
suite = unittest.TestSuite()
self.assertRaises(TypeError, suite.addTest, 5)
def test_addTest__casesuiteclass(self):
suite = unittest.TestSuite()
self.assertRaises(TypeError, suite.addTest, Test_TestSuite)
self.assertRaises(TypeError, suite.addTest, unittest.TestSuite)
def test_addTests__string(self):
suite = unittest.TestSuite()
self.assertRaises(TypeError, suite.addTests, "foo")
class Test_FunctionTestCase(TestCase):
# "Return the number of tests represented by the this test object. For
# TestCase instances, this will always be 1"
def test_countTestCases(self):
test = unittest.FunctionTestCase(lambda: None)
self.assertEqual(test.countTestCases(), 1)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if setUp() raises
# an exception.
def test_run_call_order__error_in_setUp(self):
events = []
result = LoggingResult(events)
def setUp():
events.append('setUp')
raise RuntimeError('raised by setUp')
def test():
events.append('test')
def tearDown():
events.append('tearDown')
expected = ['startTest', 'setUp', 'addError', 'stopTest']
unittest.FunctionTestCase(test, setUp, tearDown).run(result)
self.assertEqual(events, expected)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if the test raises
# an error (as opposed to a failure).
def test_run_call_order__error_in_test(self):
events = []
result = LoggingResult(events)
def setUp():
events.append('setUp')
def test():
events.append('test')
raise RuntimeError('raised by test')
def tearDown():
events.append('tearDown')
expected = ['startTest', 'setUp', 'test', 'addError', 'tearDown',
'stopTest']
unittest.FunctionTestCase(test, setUp, tearDown).run(result)
self.assertEqual(events, expected)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if the test signals
# a failure (as opposed to an error).
def test_run_call_order__failure_in_test(self):
events = []
result = LoggingResult(events)
def setUp():
events.append('setUp')
def test():
events.append('test')
self.fail('raised by test')
def tearDown():
events.append('tearDown')
expected = ['startTest', 'setUp', 'test', 'addFailure', 'tearDown',
'stopTest']
unittest.FunctionTestCase(test, setUp, tearDown).run(result)
self.assertEqual(events, expected)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if tearDown() raises
# an exception.
def test_run_call_order__error_in_tearDown(self):
events = []
result = LoggingResult(events)
def setUp():
events.append('setUp')
def test():
events.append('test')
def tearDown():
events.append('tearDown')
raise RuntimeError('raised by tearDown')
expected = ['startTest', 'setUp', 'test', 'tearDown', 'addError',
'stopTest']
unittest.FunctionTestCase(test, setUp, tearDown).run(result)
self.assertEqual(events, expected)
# "Return a string identifying the specific test case."
#
# Because of the vague nature of the docs, I'm not going to lock this
# test down too much. Really all that can be asserted is that the id()
# will be a string (either 8-byte or unicode -- again, because the docs
# just say "string")
def test_id(self):
test = unittest.FunctionTestCase(lambda: None)
self.failUnless(isinstance(test.id(), basestring))
# "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 test method's docstring, if available, or None."
def test_shortDescription__no_docstring(self):
test = unittest.FunctionTestCase(lambda: None)
self.assertEqual(test.shortDescription(), None)
# "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 test method's docstring, if available, or None."
def test_shortDescription__singleline_docstring(self):
desc = "this tests foo"
test = unittest.FunctionTestCase(lambda: None, description=desc)
self.assertEqual(test.shortDescription(), "this tests foo")
class Test_TestResult(TestCase):
# Note: there are not separate tests for TestResult.wasSuccessful(),
# TestResult.errors, TestResult.failures, TestResult.testsRun or
# TestResult.shouldStop because these only have meaning in terms of
# other TestResult methods.
#
# Accordingly, tests for the aforenamed attributes are incorporated
# in with the tests for the defining methods.
################################################################
def test_init(self):
result = unittest.TestResult()
self.failUnless(result.wasSuccessful())
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 0)
self.assertEqual(result.shouldStop, False)
# "This method can be called to signal that the set of tests being
# run should be aborted by setting the TestResult's shouldStop
# attribute to True."
def test_stop(self):
result = unittest.TestResult()
result.stop()
self.assertEqual(result.shouldStop, True)
# "Called when the test case test is about to be run. The default
# implementation simply increments the instance's testsRun counter."
def test_startTest(self):
class Foo(unittest.TestCase):
def test_1(self):
pass
test = Foo('test_1')
result = unittest.TestResult()
result.startTest(test)
self.failUnless(result.wasSuccessful())
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 1)
self.assertEqual(result.shouldStop, False)
result.stopTest(test)
# "Called after the test case test has been executed, regardless of
# the outcome. The default implementation does nothing."
def test_stopTest(self):
class Foo(unittest.TestCase):
def test_1(self):
pass
test = Foo('test_1')
result = unittest.TestResult()
result.startTest(test)
self.failUnless(result.wasSuccessful())
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 1)
self.assertEqual(result.shouldStop, False)
result.stopTest(test)
# Same tests as above; make sure nothing has changed
self.failUnless(result.wasSuccessful())
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 1)
self.assertEqual(result.shouldStop, False)
# "addSuccess(test)"
# ...
# "Called when the test case test succeeds"
# ...
# "wasSuccessful() - Returns True if all tests run so far have passed,
# otherwise returns False"
# ...
# "testsRun - The total number of tests run so far."
# ...
# "errors - A list containing 2-tuples of TestCase instances and
# formatted tracebacks. Each tuple represents a test which raised an
# unexpected exception. Contains formatted
# tracebacks instead of sys.exc_info() results."
# ...
# "failures - A list containing 2-tuples of TestCase instances and
# formatted tracebacks. Each tuple represents a test where a failure was
# explicitly signalled using the TestCase.fail*() or TestCase.assert*()
# methods. Contains formatted tracebacks instead
# of sys.exc_info() results."
def test_addSuccess(self):
class Foo(unittest.TestCase):
def test_1(self):
pass
test = Foo('test_1')
result = unittest.TestResult()
result.startTest(test)
result.addSuccess(test)
result.stopTest(test)
self.failUnless(result.wasSuccessful())
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 1)
self.assertEqual(result.shouldStop, False)
# "addFailure(test, err)"
# ...
# "Called when the test case test signals a failure. err is a tuple of
# the form returned by sys.exc_info(): (type, value, traceback)"
# ...
# "wasSuccessful() - Returns True if all tests run so far have passed,
# otherwise returns False"
# ...
# "testsRun - The total number of tests run so far."
# ...
# "errors - A list containing 2-tuples of TestCase instances and
# formatted tracebacks. Each tuple represents a test which raised an
# unexpected exception. Contains formatted
# tracebacks instead of sys.exc_info() results."
# ...
# "failures - A list containing 2-tuples of TestCase instances and
# formatted tracebacks. Each tuple represents a test where a failure was
# explicitly signalled using the TestCase.fail*() or TestCase.assert*()
# methods. Contains formatted tracebacks instead
# of sys.exc_info() results."
def test_addFailure(self):
import sys
class Foo(unittest.TestCase):
def test_1(self):
pass
test = Foo('test_1')
try:
test.fail("foo")
except:
exc_info_tuple = sys.exc_info()
result = unittest.TestResult()
result.startTest(test)
result.addFailure(test, exc_info_tuple)
result.stopTest(test)
self.failIf(result.wasSuccessful())
self.assertEqual(len(result.errors), 0)
self.assertEqual(len(result.failures), 1)
self.assertEqual(result.testsRun, 1)
self.assertEqual(result.shouldStop, False)
test_case, formatted_exc = result.failures[0]
self.failUnless(test_case is test)
self.failUnless(isinstance(formatted_exc, str))
# "addError(test, err)"
# ...
# "Called when the test case test raises an unexpected exception err
# is a tuple of the form returned by sys.exc_info():
# (type, value, traceback)"
# ...
# "wasSuccessful() - Returns True if all tests run so far have passed,
# otherwise returns False"
# ...
# "testsRun - The total number of tests run so far."
# ...
# "errors - A list containing 2-tuples of TestCase instances and
# formatted tracebacks. Each tuple represents a test which raised an
# unexpected exception. Contains formatted
# tracebacks instead of sys.exc_info() results."
# ...
# "failures - A list containing 2-tuples of TestCase instances and
# formatted tracebacks. Each tuple represents a test where a failure was
# explicitly signalled using the TestCase.fail*() or TestCase.assert*()
# methods. Contains formatted tracebacks instead
# of sys.exc_info() results."
def test_addError(self):
import sys
class Foo(unittest.TestCase):
def test_1(self):
pass
test = Foo('test_1')
try:
raise TypeError()
except:
exc_info_tuple = sys.exc_info()
result = unittest.TestResult()
result.startTest(test)
result.addError(test, exc_info_tuple)
result.stopTest(test)
self.failIf(result.wasSuccessful())
self.assertEqual(len(result.errors), 1)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 1)
self.assertEqual(result.shouldStop, False)
test_case, formatted_exc = result.errors[0]
self.failUnless(test_case is test)
self.failUnless(isinstance(formatted_exc, str))
### Support code for Test_TestCase
################################################################
class Foo(unittest.TestCase):
def runTest(self): pass
def test1(self): pass
class Bar(Foo):
def test2(self): pass
################################################################
### /Support code for Test_TestCase
class Test_TestCase(TestCase, TestEquality, TestHashing):
### Set up attributes used by inherited tests
################################################################
# Used by TestHashing.test_hash and TestEquality.test_eq
eq_pairs = [(Foo('test1'), Foo('test1'))]
# Used by TestEquality.test_ne
ne_pairs = [(Foo('test1'), Foo('runTest'))
,(Foo('test1'), Bar('test1'))
,(Foo('test1'), Bar('test2'))]
################################################################
### /Set up attributes used by inherited tests
# "class TestCase([methodName])"
# ...
# "Each instance of TestCase will run a single test method: the
# method named methodName."
# ...
# "methodName defaults to "runTest"."
#
# Make sure it really is optional, and that it defaults to the proper
# thing.
def test_init__no_test_name(self):
class Test(unittest.TestCase):
def runTest(self): raise MyException()
def test(self): pass
self.assertEqual(Test().id()[-13:], '.Test.runTest')
# "class TestCase([methodName])"
# ...
# "Each instance of TestCase will run a single test method: the
# method named methodName."
def test_init__test_name__valid(self):
class Test(unittest.TestCase):
def runTest(self): raise MyException()
def test(self): pass
self.assertEqual(Test('test').id()[-10:], '.Test.test')
# "class TestCase([methodName])"
# ...
# "Each instance of TestCase will run a single test method: the
# method named methodName."
def test_init__test_name__invalid(self):
class Test(unittest.TestCase):
def runTest(self): raise MyException()
def test(self): pass
try:
Test('testfoo')
except ValueError:
pass
else:
self.fail("Failed to raise ValueError")
# "Return the number of tests represented by the this test object. For
# TestCase instances, this will always be 1"
def test_countTestCases(self):
class Foo(unittest.TestCase):
def test(self): pass
self.assertEqual(Foo('test').countTestCases(), 1)
# "Return the default type of test result object to be used to run this
# test. For TestCase instances, this will always be
# unittest.TestResult; subclasses of TestCase should
# override this as necessary."
def test_defaultTestResult(self):
class Foo(unittest.TestCase):
def runTest(self):
pass
result = Foo().defaultTestResult()
self.assertEqual(type(result), unittest.TestResult)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if setUp() raises
# an exception.
def test_run_call_order__error_in_setUp(self):
events = []
result = LoggingResult(events)
class Foo(unittest.TestCase):
def setUp(self):
events.append('setUp')
raise RuntimeError('raised by Foo.setUp')
def test(self):
events.append('test')
def tearDown(self):
events.append('tearDown')
Foo('test').run(result)
expected = ['startTest', 'setUp', 'addError', 'stopTest']
self.assertEqual(events, expected)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if the test raises
# an error (as opposed to a failure).
def test_run_call_order__error_in_test(self):
events = []
result = LoggingResult(events)
class Foo(unittest.TestCase):
def setUp(self):
events.append('setUp')
def test(self):
events.append('test')
raise RuntimeError('raised by Foo.test')
def tearDown(self):
events.append('tearDown')
expected = ['startTest', 'setUp', 'test', 'addError', 'tearDown',
'stopTest']
Foo('test').run(result)
self.assertEqual(events, expected)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if the test signals
# a failure (as opposed to an error).
def test_run_call_order__failure_in_test(self):
events = []
result = LoggingResult(events)
class Foo(unittest.TestCase):
def setUp(self):
events.append('setUp')
def test(self):
events.append('test')
self.fail('raised by Foo.test')
def tearDown(self):
events.append('tearDown')
expected = ['startTest', 'setUp', 'test', 'addFailure', 'tearDown',
'stopTest']
Foo('test').run(result)
self.assertEqual(events, expected)
# "When a setUp() method is defined, the test runner will run that method
# prior to each test. Likewise, if a tearDown() method is defined, the
# test runner will invoke that method after each test. In the example,
# setUp() was used to create a fresh sequence for each test."
#
# Make sure the proper call order is maintained, even if tearDown() raises
# an exception.
def test_run_call_order__error_in_tearDown(self):
events = []
result = LoggingResult(events)
class Foo(unittest.TestCase):
def setUp(self):
events.append('setUp')
def test(self):
events.append('test')
def tearDown(self):
events.append('tearDown')
raise RuntimeError('raised by Foo.tearDown')
Foo('test').run(result)
expected = ['startTest', 'setUp', 'test', 'tearDown', 'addError',
'stopTest']
self.assertEqual(events, expected)
# "This class attribute gives the exception raised by the test() method.
# If a test framework needs to use a specialized exception, possibly to
# carry additional information, it must subclass this exception in
# order to ``play fair'' with the framework. The initial value of this
# attribute is AssertionError"
def test_failureException__default(self):
class Foo(unittest.TestCase):
def test(self):
pass
self.failUnless(Foo('test').failureException is AssertionError)
# "This class attribute gives the exception raised by the test() method.
# If a test framework needs to use a specialized exception, possibly to
# carry additional information, it must subclass this exception in
# order to ``play fair'' with the framework."
#
# Make sure TestCase.run() respects the designated failureException
def test_failureException__subclassing__explicit_raise(self):
events = []
result = LoggingResult(events)
class Foo(unittest.TestCase):
def test(self):
raise RuntimeError()
failureException = RuntimeError
self.failUnless(Foo('test').failureException is RuntimeError)
Foo('test').run(result)
expected = ['startTest', 'addFailure', 'stopTest']
self.assertEqual(events, expected)
# "This class attribute gives the exception raised by the test() method.
# If a test framework needs to use a specialized exception, possibly to
# carry additional information, it must subclass this exception in
# order to ``play fair'' with the framework."
#
# Make sure TestCase.run() respects the designated failureException
def test_failureException__subclassing__implicit_raise(self):
events = []
result = LoggingResult(events)
class Foo(unittest.TestCase):
def test(self):
self.fail("foo")
failureException = RuntimeError
self.failUnless(Foo('test').failureException is RuntimeError)
Foo('test').run(result)
expected = ['startTest', 'addFailure', 'stopTest']
self.assertEqual(events, expected)
# "The default implementation does nothing."
def test_setUp(self):
class Foo(unittest.TestCase):
def runTest(self):
pass
# ... and nothing should happen
Foo().setUp()
# "The default implementation does nothing."
def test_tearDown(self):
class Foo(unittest.TestCase):
def runTest(self):
pass
# ... and nothing should happen
Foo().tearDown()
# "Return a string identifying the specific test case."
#
# Because of the vague nature of the docs, I'm not going to lock this
# test down too much. Really all that can be asserted is that the id()
# will be a string (either 8-byte or unicode -- again, because the docs
# just say "string")
def test_id(self):
class Foo(unittest.TestCase):
def runTest(self):
pass
self.failUnless(isinstance(Foo().id(), basestring))
# "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 test method's docstring, if available, or None."
def test_shortDescription__no_docstring(self):
class Foo(unittest.TestCase):
def runTest(self):
pass
self.assertEqual(Foo().shortDescription(), None)
# "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 test method's docstring, if available, or None."
def test_shortDescription__singleline_docstring(self):
class Foo(unittest.TestCase):
def runTest(self):
"this tests foo"
pass
self.assertEqual(Foo().shortDescription(), "this tests foo")
# "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 test method's docstring, if available, or None."
def test_shortDescription__multiline_docstring(self):
class Foo(unittest.TestCase):
def runTest(self):
"""this tests foo
blah, bar and baz are also tested"""
pass
self.assertEqual(Foo().shortDescription(), "this tests foo")
# "If result is omitted or None, a temporary result object is created
# and used, but is not made available to the caller"
def test_run__uses_defaultTestResult(self):
events = []
class Foo(unittest.TestCase):
def test(self):
events.append('test')
def defaultTestResult(self):
return LoggingResult(events)
# Make run() find a result object on its own
Foo('test').run()
expected = ['startTest', 'test', 'stopTest']
self.assertEqual(events, expected)
class Test_Assertions(TestCase):
def test_AlmostEqual(self):
self.failUnlessAlmostEqual(1.00000001, 1.0)
self.failIfAlmostEqual(1.0000001, 1.0)
self.assertRaises(AssertionError,
self.failUnlessAlmostEqual, 1.0000001, 1.0)
self.assertRaises(AssertionError,
self.failIfAlmostEqual, 1.00000001, 1.0)
self.failUnlessAlmostEqual(1.1, 1.0, places=0)
self.assertRaises(AssertionError,
self.failUnlessAlmostEqual, 1.1, 1.0, places=1)
self.failUnlessAlmostEqual(0, .1+.1j, places=0)
self.failIfAlmostEqual(0, .1+.1j, places=1)
self.assertRaises(AssertionError,
self.failUnlessAlmostEqual, 0, .1+.1j, places=1)
self.assertRaises(AssertionError,
self.failIfAlmostEqual, 0, .1+.1j, places=0)
def test_assertRaises(self):
def _raise(e):
raise e
self.assertRaises(KeyError, _raise, KeyError)
self.assertRaises(KeyError, _raise, KeyError("key"))
try:
self.assertRaises(KeyError, lambda: None)
except AssertionError as e:
self.assert_("KeyError not raised" in e, str(e))
else:
self.fail("assertRaises() didn't fail")
try:
self.assertRaises(KeyError, _raise, ValueError)
except ValueError:
pass
else:
self.fail("assertRaises() didn't let exception pass through")
with self.assertRaises(KeyError):
raise KeyError
with self.assertRaises(KeyError):
raise KeyError("key")
try:
with self.assertRaises(KeyError):
pass
except AssertionError as e:
self.assert_("KeyError not raised" in e, str(e))
else:
self.fail("assertRaises() didn't fail")
try:
with self.assertRaises(KeyError):
raise ValueError
except ValueError:
pass
else:
self.fail("assertRaises() didn't let exception pass through")
######################################################################
## Main
######################################################################
def test_main():
test_support.run_unittest(Test_TestCase, Test_TestLoader,
Test_TestSuite, Test_TestResult, Test_FunctionTestCase,
Test_Assertions)
if __name__ == "__main__":
test_main()
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