test_interface.py 文件源码

def test_classImplements_base_and_derived(self):
        from zope.interface import Interface
        from zope.interface import implementedBy
        from zope.interface import providedBy

        class IBase(Interface):
            def method():
                pass

        class IDerived(IBase):
            pass

        class Current(object):
            __implemented__ = IDerived
            def method(self):
                pass

        current = Current()

        self.assertTrue(IBase.implementedBy(Current))
        self.assertTrue(IDerived.implementedBy(Current))
        self.assertFalse(IBase in implementedBy(Current))
        self.assertTrue(IBase in implementedBy(Current).flattened())
        self.assertTrue(IDerived in implementedBy(Current))
        self.assertFalse(IBase in providedBy(current))
        self.assertTrue(IBase in providedBy(current).flattened())
        self.assertTrue(IDerived in providedBy(current))