    @Test
    public void testZkDirectoryDepth2() throws Exception {

        final Matcher m = validateZkUrl("zk://host:2181/cassandra-mesos/ring1");
        assertThat(m.group(1)).isEqualTo("host:2181");
        assertThat(m.group(2)).isEqualTo("/cassandra-mesos/ring1");
    }