@Test
public void testGetEmptyUrl() throws Exception {

    URL url = UrlUtils.getEmptyUrl("dubbo/a.b.c.Foo:1.0.0", "test");
    assertThat(url.toFullString(), equalTo("empty://0.0.0.0/a.b.c.Foo?category=test&group=dubbo&version=1.0.0"));
}