test_metadata.py 文件源码

def test_cluster_column_ordering_reversed_metadata(self):
        """
        Simple test to ensure that the metatdata associated with cluster ordering is surfaced is surfaced correctly.

        Creates a table with a few clustering keys. Then checks the clustering order associated with clustering columns
        and ensure it's set correctly.
        @since 3.0.0
        @jira_ticket PYTHON-402
        @expected_result is_reversed is set on DESC order, and is False on ASC

        @test_category metadata
        """

        create_statement = self.make_create_statement(["a"], ["b", "c"], ["d"], compact=True)
        create_statement += " AND CLUSTERING ORDER BY (b ASC, c DESC)"
        self.session.execute(create_statement)
        tablemeta = self.get_table_metadata()
        b_column = tablemeta.columns['b']
        self.assertFalse(b_column.is_reversed)
        c_column = tablemeta.columns['c']
        self.assertTrue(c_column.is_reversed)