@Override
    public boolean tableExists(String dbName, String tblName) {
        return hiveMetadata.tableExists(dbName, tblName);
    }
@Test
    public void testTableExists(@Mocked HiveTable hiveTable) {
        new Expectations() {
            {
                hiveMetadata.tableExists("test_db", "test_tbl");
                result = true;
                minTimes = 1;
            }
        };
        boolean exists = unifiedMetadata.tableExists("test_db", "test_tbl");
        Assert.assertTrue(exists);
    }