如何为JUnit测试模拟okhttp响应

问题描述

我正在通过okhttp向第三方API发出出站HTTP请求：

public @Nullable result Call3rdParty {
    OkHttpClient client = new OkHttpClient.Builder()
        .connectTimeout(CONNECTION_TIMEOUT,TimeUnit.MILLISECONDS)
        .readTimeout(RW_TIMEOUT,TimeUnit.MILLISECONDS)
        .retryOnConnectionFailure(true)
        .build();
    

    Request request = new Request.Builder()
       .url(url)
       .build();
    Response response = client.newCall(request).execute();

    //Deserialize and do minor data manipulation...
}

我想创建一个单元测试并模拟响应。

  private MockWebServer server;

  @Before
  public void setUp() throws IOException {
    this.server = new MockWebServer();
    this.server.start();
  }

  @After
  public void tearDown() throws IOException {
    this.server.shutdown();
  }

  @Test
  public void Test_SUCCESS() throws Exception {
    String json = readFileAsstring(file);
    this.server.enqueue(new MockResponse().setResponseCode(200).setBody(json));
    //Todo: What to do here??
   }

将模拟响应加入队列后，我需要做些什么来返回模拟响应并将其用于我正在测试的方法的其余部分？

解决方法

项目文档对此进行了介绍

https://github.com/square/okhttp/tree/master/mockwebserver

  // Ask the server for its URL. You'll need this to make HTTP requests.
  HttpUrl url = server.url("/myendpoint");

  // Call your client code here,passing the server location to it
  response = Call3rdParty(url)