def METHOD_NAME(self):
    with patch.object(
        Layer1,
        "describe_domain",
        mock_describe_domain,
    ):
        mocked = mock_describe_domain()
        domain = Domain(
            mocked["domainInfo"]["name"],
            status=mocked["domainInfo"]["status"],
            description=mocked["domainInfo"]["description"],
            retention_period=mocked["configuration"]["workflowExecutionRetentionPeriodInDays"],
        )
        diffs = domain.changes
        self.assertEqual(len(diffs), 0)