def test_constructor(self):
mock = Mock()
self.assertFalse(mock.called, "called not initialised correctly")
self.assertEqual(mock.call_count, 0,
"call_count not initialised correctly")
self.assertTrue(is_instance(mock.return_value, Mock),
"return_value not initialised correctly")
self.assertEqual(mock.call_args, None,
"call_args not initialised correctly")
self.assertEqual(mock.call_args_list, [],
"call_args_list not initialised correctly")
self.assertEqual(mock.method_calls, [],
"method_calls not initialised correctly")
# Can't use hasattr for this test as it always returns True on a mock
self.assertNotIn('_items', mock.__dict__,
"default mock should not have '_items' attribute")
self.assertIsNone(mock._mock_parent,
"parent not initialised correctly")
self.assertIsNone(mock._mock_methods,
"methods not initialised correctly")
self.assertEqual(mock._mock_children, {},
"children not initialised incorrectly")
def test_call(self):
mock = Mock()
self.assertTrue(is_instance(mock.return_value, Mock),
"Default return_value should be a Mock")
result = mock()
self.assertEqual(mock(), result,
"different result from consecutive calls")
mock.reset_mock()
ret_val = mock(sentinel.Arg)
self.assertTrue(mock.called, "called not set")
self.assertEqual(mock.call_count, 1, "call_count incoreect")
self.assertEqual(mock.call_args, ((sentinel.Arg,), {}),
"call_args not set")
self.assertEqual(mock.call_args_list, [((sentinel.Arg,), {})],
"call_args_list not initialised correctly")
mock.return_value = sentinel.ReturnValue
ret_val = mock(sentinel.Arg, key=sentinel.KeyArg)
self.assertEqual(ret_val, sentinel.ReturnValue,
"incorrect return value")
self.assertEqual(mock.call_count, 2, "call_count incorrect")
self.assertEqual(mock.call_args,
((sentinel.Arg,), {'key': sentinel.KeyArg}),
"call_args not set")
self.assertEqual(mock.call_args_list, [
((sentinel.Arg,), {}),
((sentinel.Arg,), {'key': sentinel.KeyArg})
],
"call_args_list not set")
def test_patch_spec_callable_class(self):
class CallableX(X):
def __call__(self): pass
class Sub(CallableX):
pass
class Multi(SomeClass, Sub):
pass
class OldStyle:
def __call__(self): pass
class OldStyleSub(OldStyle):
pass
for arg in 'spec', 'spec_set':
for Klass in CallableX, Sub, Multi, OldStyle, OldStyleSub:
with patch('%s.X' % __name__, **{arg: Klass}) as mock:
instance = mock()
mock.assert_called_once_with()
self.assertTrue(is_instance(instance, MagicMock))
# inherited spec
self.assertRaises(AttributeError, getattr, instance,
'foobarbaz')
result = instance()
# instance is callable, result has no spec
instance.assert_called_once_with()
result(3, 2, 1)
result.assert_called_once_with(3, 2, 1)
result.foo(3, 2, 1)
result.foo.assert_called_once_with(3, 2, 1)
def test_patch_spec_callable_class(self):
class CallableX(X):
def __call__(self):
pass
class Sub(CallableX):
pass
class Multi(SomeClass, Sub):
pass
for arg in 'spec', 'spec_set':
for Klass in CallableX, Sub, Multi:
with patch('%s.X' % __name__, **{arg: Klass}) as mock:
instance = mock()
mock.assert_called_once_with()
self.assertTrue(is_instance(instance, MagicMock))
# inherited spec
self.assertRaises(AttributeError, getattr, instance,
'foobarbaz')
result = instance()
# instance is callable, result has no spec
instance.assert_called_once_with()
result(3, 2, 1)
result.assert_called_once_with(3, 2, 1)
result.foo(3, 2, 1)
result.foo.assert_called_once_with(3, 2, 1)
def test_pickle(self):
for Klass in (MagicMock, Mock, Subclass, NonCallableMagicMock):
mock = Klass(name='foo', attribute=3)
mock.foo(1, 2, 3)
data = pickle.dumps(mock)
new = pickle.loads(data)
new.foo.assert_called_once_with(1, 2, 3)
self.assertFalse(new.called)
self.assertTrue(is_instance(new, Klass))
self.assertIsInstance(new, Thing)
self.assertIn('name="foo"', repr(new))
self.assertEqual(new.attribute, 3)
def test_attribute_access_returns_mocks(self):
mock = Mock()
something = mock.something
self.assertTrue(is_instance(something, Mock), "attribute isn't a mock")
self.assertEqual(mock.something, something,
"different attributes returned for same name")
# Usage example
mock = Mock()
mock.something.return_value = 3
self.assertEqual(mock.something(), 3, "method returned wrong value")
self.assertTrue(mock.something.called,
"method didn't record being called")
def assertNotCallable(self, mock):
self.assertTrue(is_instance(mock, NonCallableMagicMock))
self.assertFalse(is_instance(mock, CallableMixin))
def test_with_statement_as(self):
with patch("%s.something" % __name__) as mock_something:
self.assertEqual(something, mock_something, "unpatched")
self.assertTrue(is_instance(mock_something, MagicMock), "patching wrong type")
self.assertEqual(something, sentinel.Something)
def test_with_statement_as(self):
with patch('%s.something' % __name__) as mock_something:
self.assertEqual(something, mock_something, "unpatched")
self.assertTrue(is_instance(mock_something, MagicMock),
"patching wrong type")
self.assertEqual(something, sentinel.Something)
def assertNotCallable(self, mock):
self.assertTrue(is_instance(mock, NonCallableMagicMock))
self.assertFalse(is_instance(mock, CallableMixin))