Method test_autospec_mock

Lib/test/test_unittest/testmock/testmock.py:237–264

(self)

    def test_autospec_mock(self):
        class A(object):
            class B(object):
                C = None

        with mock.patch.object(A, 'B'):
            with self.assertRaisesRegex(InvalidSpecError,
                                        "Cannot autospec attr 'B' from target <MagicMock spec='A'"):
                create_autospec(A).B
            with self.assertRaisesRegex(InvalidSpecError,
                                        "Cannot autospec attr 'B' from target 'A'"):
                mock.patch.object(A, 'B', autospec=True).start()
            with self.assertRaisesRegex(InvalidSpecError,
                                        "Cannot autospec attr 'C' as the patch target "):
                mock.patch.object(A.B, 'C', autospec=True).start()
            with self.assertRaisesRegex(InvalidSpecError,
                                        "Cannot spec attr 'B' as the spec "):
                mock.patch.object(A, 'B', spec=A.B).start()
            with self.assertRaisesRegex(InvalidSpecError,
                                        "Cannot spec attr 'B' as the spec_set "):
                mock.patch.object(A, 'B', spec_set=A.B).start()
            with self.assertRaisesRegex(InvalidSpecError,
                                        "Cannot spec attr 'B' as the spec_set "):
                mock.patch.object(A, 'B', spec_set=A.B).start()
            with self.assertRaisesRegex(InvalidSpecError, "Cannot spec a Mock object."):
                mock.Mock(A.B)
            with mock.patch('builtins.open', mock.mock_open()):
                mock.mock_open()  # should still be valid with open() mocked

    def test_create_autospec_wraps_class(self):
        """Autospec a class with wraps & test if the call is passed to the