test_updates.py 文件源码

def test_noop_model_direct_update(self):
        """ Tests that calling update on a model with no changes will do nothing. """
        m0 = TestUpdateModel.create(count=5, text='monkey')

        with patch.object(self.session, 'execute') as execute:
            m0.update()
        assert execute.call_count == 0

        with patch.object(self.session, 'execute') as execute:
            m0.update(count=5)
        assert execute.call_count == 0

        with patch.object(self.session, 'execute') as execute:
            m0.update(partition=m0.partition)

        with patch.object(self.session, 'execute') as execute:
            m0.update(cluster=m0.cluster)