![image](https://user-images.githubusercontent.com/54169514/199922630-ba1b1417-e124-40b1-bac7-49158e2adbca.png)

文档上ApplicationConfig的enableFileCache属性默认true，但是在Dubbo3.1版本中，该属性似乎默认为null，导致mapping和元数据无法在本地缓存。

![image](https://user-images.githubusercontent.com/54169514/199923129-c99ea29b-45c5-40d1-bc21-1fbb44830fc7.png)

}
    @Test
    void testDumpDirectory() throws Exception {
        ApplicationConfig application = new ApplicationConfig("app");
        application.setDumpDirectory("/dump");
        assertThat(application.getDumpDirectory(), equalTo("/dump"));
        Map<String, String> parameters = new HashMap<String, String>();
        ApplicationConfig.appendParameters(parameters, application);
        assertThat(parameters, hasEntry(DUMP_DIRECTORY, "/dump"));
    }
    @Test
    void testQosEnable() throws Exception {
        ApplicationConfig application = new ApplicationConfig("app");
        application.setQosEnable(true);
        assertThat(application.getQosEnable(), is(true));
        Map<String, String> parameters = new HashMap<String, String>();
        ApplicationConfig.appendParameters(parameters, application);
        assertThat(parameters, hasEntry(QOS_ENABLE, "true"));
    }
    @Test
    void testQosPort() throws Exception {
        ApplicationConfig application = new ApplicationConfig("app");
        application.setQosPort(8080);
        assertThat(application.getQosPort(), equalTo(8080));
    }
    @Test
    void testQosAcceptForeignIp() throws Exception {
        ApplicationConfig application = new ApplicationConfig("app");
        application.setQosAcceptForeignIp(true);
        assertThat(application.getQosAcceptForeignIp(), is(true));