import unittest
import gc
import sys
import weakref
from test.test_unittest.support import LoggingResult, TestEquality
### Support code for Test_TestSuite
################################################################
class Test(object):
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(Test.Foo(n) for n in names)
################################################################
class Test_TestSuite(unittest.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)
# countTestCases() still works after tests are run
suite.run(unittest.TestResult())
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)
# countTestCases() still works after tests are run
suite.run(unittest.TestResult())
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)
# countTestCases() still works after tests are run
suite_1.run(unittest.TestResult())
self.assertEqual(suite_1.countTestCases(), 2)
suite_2.run(unittest.TestResult())
self.assertEqual(suite_2.countTestCases(), 2)
suite_3.run(unittest.TestResult())
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)
# countTestCases() still works after tests are run
suite.run(unittest.TestResult())
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)
# countTestCases() still works after tests are run
suite.run(unittest.TestResult())
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)
# countTestCases() still works after tests are run
parent.run(unittest.TestResult())
self.assertEqual(parent.countTestCases(), 4)
self.assertEqual(child.countTestCases(), 2)
# "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])
# countTestCases() still works after tests are run
suite.run(unittest.TestResult())
self.assertEqual(suite.countTestCases(), 1)
# "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])
# countTestCases() still works after tests are run
suite.run(unittest.TestResult())
self.assertEqual(suite.countTestCases(), 1)
# "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")
def test_function_in_suite(self):
def f(_):
pass
suite = unittest.TestSuite()
suite.addTest(f)
# when the bug is fixed this line will not crash
suite.run(unittest.TestResult())
def test_remove_test_at_index(self):
if not unittest.BaseTestSuite._cleanup:
raise unittest.SkipTest("Suite cleanup is disabled")
suite = unittest.TestSuite()
suite._tests = [1, 2, 3]
suite._removeTestAtIndex(1)
self.assertEqual([1, None, 3], suite._tests)
def test_remove_test_at_index_not_indexable(self):
if not unittest.BaseTestSuite._cleanup:
raise unittest.SkipTest("Suite cleanup is disabled")
suite = unittest.TestSuite()
suite._tests = None
# if _removeAtIndex raises for noniterables this next line will break
suite._removeTestAtIndex(2)
def assert_garbage_collect_test_after_run(self, TestSuiteClass):
if not unittest.BaseTestSuite._cleanup:
raise unittest.SkipTest("Suite cleanup is disabled")
class Foo(unittest.TestCase):
def test_nothing(self):
pass
test = Foo('test_nothing')
wref = weakref.ref(test)
suite = TestSuiteClass([wref()])
suite.run(unittest.TestResult())
del test
# for the benefit of non-reference counting implementations
gc.collect()
self.assertEqual(suite._tests, [None])
self.assertIsNone(wref())
def test_garbage_collect_test_after_run_BaseTestSuite(self):
self.assert_garbage_collect_test_after_run(unittest.BaseTestSuite)
def test_garbage_collect_test_after_run_TestSuite(self):
self.assert_garbage_collect_test_after_run(unittest.TestSuite)
def test_basetestsuite(self):
class Test(unittest.TestCase):
wasSetUp = False
wasTornDown = False
@classmethod
def setUpClass(cls):
cls.wasSetUp = True
@classmethod
def tearDownClass(cls):
cls.wasTornDown = True
def testPass(self):
pass
def testFail(self):
fail
class Module(object):
wasSetUp = False
wasTornDown = False
@staticmethod
def setUpModule():
Module.wasSetUp = True
@staticmethod
def tearDownModule():
Module.wasTornDown = True
Test.__module__ = 'Module'
sys.modules['Module'] = Module
self.addCleanup(sys.modules.pop, 'Module')
suite = unittest.BaseTestSuite()
suite.addTests([Test('testPass'), Test('testFail')])
self.assertEqual(suite.countTestCases(), 2)
result = unittest.TestResult()
suite.run(result)
self.assertFalse(Module.wasSetUp)
self.assertFalse(Module.wasTornDown)
self.assertFalse(Test.wasSetUp)
self.assertFalse(Test.wasTornDown)
self.assertEqual(len(result.errors), 1)
self.assertEqual(len(result.failures), 0)
self.assertEqual(result.testsRun, 2)
self.assertEqual(suite.countTestCases(), 2)
def test_overriding_call(self):
class MySuite(unittest.TestSuite):
called = False
def __call__(self, *args, **kw):
self.called = True
unittest.TestSuite.__call__(self, *args, **kw)
suite = MySuite()
result = unittest.TestResult()
wrapper = unittest.TestSuite()
wrapper.addTest(suite)
wrapper(result)
self.assertTrue(suite.called)
# reusing results should be permitted even if abominable
self.assertFalse(result._testRunEntered)
if __name__ == '__main__':
unittest.main()
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