test_implementation_checks.py 文件源码

def test_interface_abc_detection(self):
        @six.add_metaclass(abc.ABCMeta)
        class IABC(object):

            @abc.abstractmethod
            def foo(self):
                pass

            @abc.abstractproperty
            def bar(self):
                return None

        class EmptyABCPI(IABC, pure_interface.PureInterface):
            pass

        class PIEmptyABC(pure_interface.PureInterface, IABC):
            pass

        self.assertTrue(EmptyABCPI._pi.type_is_pure_interface)
        self.assertTrue(PIEmptyABC._pi.type_is_pure_interface)
        if six.PY3:
            self.assertTrue('foo' in EmptyABCPI._pi.interface_method_names)
            self.assertTrue('bar' in EmptyABCPI._pi.interface_property_names)
        self.assertTrue('foo' in PIEmptyABC._pi.interface_method_names)
        self.assertTrue('bar' in PIEmptyABC._pi.interface_property_names)
        with self.assertRaises(TypeError):
            EmptyABCPI()
        with self.assertRaises(TypeError):
            PIEmptyABC()