test_model.py 文件源码

def test_model_over_write(self):
        """
        Test to ensure overwriting of primary keys in model inheritance is allowed

        This is currently only an issue in PyPy. When PYTHON-504 is introduced this should
        be updated error out and warn the user

        @since 3.6.0
        @jira_ticket PYTHON-576
        @expected_result primary keys can be overwritten via inheritance

        @test_category object_mapper
        """
        class TimeModelBase(Model):
            uuid = columns.TimeUUID(primary_key=True)

        class DerivedTimeModel(TimeModelBase):
            __table_name__ = 'derived_time'
            uuid = columns.TimeUUID(primary_key=True, partition_key=True)
            value = columns.Text(required=False)

        # In case the table already exists in keyspace
        drop_table(DerivedTimeModel)

        sync_table(DerivedTimeModel)
        uuid_value = uuid1()
        uuid_value2 = uuid1()
        DerivedTimeModel.create(uuid=uuid_value, value="first")
        DerivedTimeModel.create(uuid=uuid_value2, value="second")
        DerivedTimeModel.objects.filter(uuid=uuid_value)