六、测试模式

1.1.0版本开始增加了apollo-mockserver，从而可以很好地支持单元测试时需要mock配置的场景，使用方法如下：

6.1 引入pom依赖

<dependency>
    <groupId>com.ctrip.framework.apollo</groupId>
    <artifactId>apollo-mockserver</artifactId>
    <version>1.1.0</version>
</dependency>

6.2 在test的resources下放置mock的数据

文件名格式约定为mockdata-{namespace}.properties

6.3 写测试类

更多使用demo可以参考ApolloMockServerApiTest.java和ApolloMockServerSpringIntegrationTest.java。

@RunWith(SpringJUnit4ClassRunner.class)
@SpringApplicationConfiguration(classes = TestConfiguration.class)
public class SpringIntegrationTest {
  // 启动apollo的mockserver
  @ClassRule
  public static EmbeddedApollo embeddedApollo = new EmbeddedApollo();
  @Test
  @DirtiesContext  // 这个注解很有必要，因为配置注入会弄脏应用上下文
  public void testPropertyInject(){
    assertEquals("value1", testBean.key1);
    assertEquals("value2", testBean.key2);
  }
  @Test
  @DirtiesContext
  public void testListenerTriggeredByAdd() throws InterruptedException, ExecutionException, TimeoutException {
    String otherNamespace = "othernamespace";
    embeddedApollo.addOrModifyPropery(otherNamespace,"someKey","someValue");
    ConfigChangeEvent changeEvent = testBean.futureData.get(5000, TimeUnit.MILLISECONDS);
    assertEquals(otherNamespace, changeEvent.getNamespace());
    assertEquals("someValue", changeEvent.getChange("someKey").getNewValue());
  }
  @EnableApolloConfig("application")
  @Configuration
  static class TestConfiguration{
    @Bean
    public TestBean testBean(){
      return new TestBean();
    }
  }
  static class TestBean{
    @Value("${key1:default}")
    String key1;
    @Value("${key2:default}")
    String key2;
    SettableFuture<ConfigChangeEvent> futureData = SettableFuture.create();
    @ApolloConfigChangeListener("othernamespace")
    private void onChange(ConfigChangeEvent changeEvent) {
      futureData.set(changeEvent);
    }
  }
}