![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)

@AfterEach
    public void afterEach() {
        SysProps.clear();
    }
    @Test
    void testName() throws Exception {
        ApplicationConfig application = new ApplicationConfig();
        application.setName("app");
        assertThat(application.getName(), equalTo("app"));
        assertThat(application.getId(), equalTo(null));
        application = new ApplicationConfig("app2");
        assertThat(application.getName(), equalTo("app2"));
        assertThat(application.getId(), equalTo(null));
        Map<String, String> parameters = new HashMap<String, String>();
        ApplicationConfig.appendParameters(parameters, application);
        assertThat(parameters, hasEntry(APPLICATION_KEY, "app2"));
    }
    @Test
    void testVersion() throws Exception {
        ApplicationConfig application = new ApplicationConfig("app");
        application.setVersion("1.0.0");
        assertThat(application.getVersion(), equalTo("1.0.0"));
        Map<String, String> parameters = new HashMap<String, String>();
        ApplicationConfig.appendParameters(parameters, application);
        assertThat(parameters, hasEntry("application.version", "1.0.0"));
    }
    @Test
    void testOwner() throws Exception {
        ApplicationConfig application = new ApplicationConfig("app");
        application.setOwner("owner");