@Override
    public ResultSet getCrossReference(final String parentCatalog,
                                       final String parentSchema, final String parentTable, final String foreignCatalog, final String foreignSchema, final String foreignTable) throws SQLException {
        return createDatabaseMetaDataResultSet(
                getDatabaseMetaData().getCrossReference(getActualCatalog(parentCatalog), getActualSchema(parentSchema), parentTable, foreignCatalog, foreignSchema, foreignTable));
    }
@Test
    void assertGetCrossReference() throws SQLException {
        when(databaseMetaData.getCrossReference("test", null, null, null, null, null)).thenReturn(resultSet);
        assertThat(shardingSphereDatabaseMetaData.getCrossReference("test", null, null, null, null, null), instanceOf(DatabaseMetaDataResultSet.class));
    }