@Override
    public List<String> listTableNames(String dbName) {
        return deltaOps.getAllTableNames(dbName);
    }
@Test
    public void testListTableNames() {
        List<String> tableNames = deltaLakeMetadata.listTableNames("db1");
        Assert.assertEquals(2, tableNames.size());
        Assert.assertEquals("table1", tableNames.get(0));
        Assert.assertEquals("table2", tableNames.get(1));
    }