@Test
public void test_agentmain_rm_withFile() throws Exception {

    DnsCacheManipulator.setDnsCache("baidu.com", "3.3.3.3");
    assertNotNull(DnsCacheManipulator.getDnsCache("baidu.com"));
    DcmAgent.agentmain("rm  baidu.com file " + outputFilePath);
    assertNull(DnsCacheManipulator.getDnsCache("baidu.com"));
}