@Override
    public ResultSet getCatalogs() throws SQLException {
        return createDatabaseMetaDataResultSet(getDatabaseMetaData().getCatalogs());
    }
@Test
    void assertGetCatalogs() throws SQLException {
        when(databaseMetaData.getCatalogs()).thenReturn(resultSet);
        assertThat(shardingSphereDatabaseMetaData.getCatalogs(), instanceOf(DatabaseMetaDataResultSet.class));
    }