Question

我有一个处理器来处理对端点的调用并返回响应。方法如下所示

public Event GetEvent()
{
    HttpClient client = new HttpClient();
    client.BaseAddress = new Uri("https://www.test.com");

    HttpResponseMessage response = client.GetAsync("/event").GetAwaiter().GetResult();

    var content = response.Content.ReadAsStringAsync().Result;
    Event newEvent = JsonConvert.DeserializeObject<Event>(content);

    response.EnsureSuccessStatusCode();

    return newEvent;
}

现在我需要为这个类创建一个单元测试，它实际上不会向端点发出请求。我的单元测试遵循这种模式：

 public HttpClientProcessorTest()
 {
     InstantiateClassUnderTest();
 }

  [Fact]
  public void HttpClientProcessor_GetEvent_EnsuresSuccessfulStatusCodeAndReturnsEvent()
  {
      ShimHttpClient.AllInstances.GetAsync = (x) =>
      {

      };

      ClassUnderTest.GetEvent();
  }

但是我收到错误'ShimHttpClient.AllInstances' does not contain a definition for 'GetAsync'。我将System.Net.Http添加到引用中，右键单击并添加了fakes程序集，但它只提供对某些方法的访问，而不是GetAsync()。我省略了断言，因为在我甚至可以使垫片工作之前不需要它们。

如何填充GetAsync（）？

Answer 1

我是这样实现的：

代码：

       HttpClientHandler handler = new HttpClientHandler();
       HttpClient httpClient = new HttpClient(handler);

       Task<HttpResponseMessage> httpRequest = httpClient.SendAsync(requestMessage, HttpCompletionOption.ResponseContentRead, CancellationToken.None);
       HttpResponseMessage httpResponse = httpRequest.Result;

在测试中：

       ShimHttpClient.AllInstances.SendAsyncHttpRequestMessageHttpCompletionOptionCancellationToken = (r,a, message, s) => Task.FromResult(new HttpResponseMessage(HttpStatusCode.OK));

你怎么能shim /假HttpClient.GetAsync

1 个答案: