如何模拟对外部URL的OkHttpClient请求？

Question

我的服务中有这样的代码：

public String requestValue() {
  Call call = okHttpClient.newCall(new Request.Builder().url("external-url").build());
  Response response = call.execute();
  return response.body().string();
}

如何在Junit测试中模拟此调用的结果？

public void testRequestValue() {
  // TODO mock http response
  String result = myService.requestValue();
  assertEquals("value", result);
}

注意:使用Mockito的朴素解决方案不起作用。Mockito.eq不会在Request对象上触发(似乎Request.equals为相同的请求提供了错误的结果)。

Request request = new Request.Builder().url("external-url").build();
Response response = new Response.Builder()
  .request(request)
  .protocol(Protocol.HTTP_2)
  .code(200)
  .message("")
  .body(ResponseBody.create("value", MediaType.get("application/json")))
  .build();

Call call = Mockito.mock(Call.class);
Mockito.when(call.execute()).thenReturn(response);
Mockito.when(okHttpClientMock.newCall(Mockito.eq(request))).thenReturn(call);

Answer 1

您可以使用wiremock或okhttp提供的MockServer