@Test
    public void testGetterSetter() {
        assertEquals(URL, polarisConfig.getUrl());
        assertEquals(NAMESPACE, polarisConfig.getNamespace());
        assertEquals(FILEGROUP, polarisConfig.getFileGroup());
    }
add test case for {@link PolarisConfig}.
shenyu-sync-data-center/shenyu-sync-data-polaris/src/test/java/org/apache/shenyu/sync/data/polaris/config/PolarisConfigTest.java