test_declarations.py 文件源码

def test_called_from_function(self):
        import warnings
        from zope.interface.declarations import classProvides
        from zope.interface.interface import InterfaceClass
        from zope.interface._compat import PYTHON3
        IFoo = InterfaceClass("IFoo")
        globs = {'classProvides': classProvides, 'IFoo': IFoo}
        locs = {}
        CODE = "\n".join([
            'def foo():',
            '    classProvides(IFoo)'
            ])
        exec(CODE, globs, locs)
        foo = locs['foo']
        with warnings.catch_warnings(record=True) as log:
            warnings.resetwarnings()
            self.assertRaises(TypeError, foo)
            if not PYTHON3:
                self.assertEqual(len(log), 0) # no longer warn