test_mimetypes.py 文件源码

def test_registry_read_error(self):
        import _winreg

        class MockWinreg(object):
            def OpenKey(self, key, name):
                if key != _winreg.HKEY_CLASSES_ROOT:
                    raise WindowsError(5, "Access is denied")
                return _winreg.OpenKey(key, name)
            def __getattr__(self, name):
                return getattr(_winreg, name)

        mimetypes._winreg = MockWinreg()
        try:
            mimetypes.init()
        finally:
            mimetypes._winreg = _winreg