单元测试-C＃模拟HttpClient

Question

我具有要进行单元测试的功能。看来我的HttpClient有问题。每当我在TestExplorer中运行它时，我都会收到此错误消息“ System.Net.Http.HttpRequestException：发送请求时发生错误。System.Net.WebException：基础连接已关闭”。

如何正确模拟httpClient？

我的实现

public class WaktuSolatServiceApi : IWaktuSolatServiceApi
    {
        private const string URL = 
"http://api.azanpro.com/times/today.json?zone=sgr01&format=12-hour";

    IWaktuSolatServiceApi waktu;
    HttpClient client;
    Solat solat;

    public WaktuSolatServiceApi(HttpClient client, Solat solat)
    {
        this.client = client;
        this.solat = solat;
    }

    public async Task<Solat> GetAsyncSet()
    {
        client.BaseAddress = new Uri(URL);

        client.DefaultRequestHeaders.Accept.Add(
            new MediaTypeWithQualityHeaderValue("application/json"));

        var response = await client.GetAsync(URL).ConfigureAwait(false);
        if (response.IsSuccessStatusCode)
        {
            var dataObjects = response.Content.ReadAsStringAsync();

            solat = JsonConvert.DeserializeObject<Solat>(dataObjects.Result);
        }
        else
        {
            Console.WriteLine("{0} ({1})", (int)response.StatusCode, response.ReasonPhrase);
            Console.ReadLine();
        }

        return solat;
    }
}

UnitTest Xunit

[Fact]
public async Task ShouldReturnBetul()
{
  var solat = new Mock<Solat>();

  Mock<IWaktuSolatServiceApi> mocksetting = new 
  Mock<IWaktuSolatServiceApi>();

   Solat expected = new Solat
   {
      zone = "test"
   };

   var client  = new Mock<HttpClient>();
   var test = new WaktuSolatServiceApi(new HttpClient(), new Solat());
   var final = await test.GetAsyncSet().ConfigureAwait(false);

    Assert.NotNull(final);
    Assert.Same(expected, final);            
    }
}