如何在单元测试期间设置 HttpResponseMessage 的内容？

Question

我正在编写一个单元测试，其中我正在测试一个连接到外部服务的服务。

服务代码：

var request = new APIRequest
{
    Query = query
};

var response = await _httpService.SendRequestAsync(_configuration.ApiUrl, HttpMethod.Post, request, _configuration.Username, _configuration.Password);

if (response.IsSuccessStatusCode)
{
    var result = await response.Content.ReadAsAsync<Result>();
    return result;
}

我为上述服务方法编写的单元测试。

public async void GetPerformance_OKResults()
{
    //ARRANGE
    var resultToReturn = MockedEntitiesRepository.mockNetworkResult;
    HttpResponseMessage mockResponse = new HttpResponseMessage(System.Net.HttpStatusCode.OK);
    mockResponse.Content = new ObjectContent(Type.GetType(resultToReturn), resultToReturn, MediaTypeFormatter.)

    mockHttpService.Setup(s => s.SendRequestAsync(applicationConfiguration.Object.Value.ApiUrl, HttpMethod.Post, It.IsAny<object>(), applicationConfiguration.Object.Value.Username, applicationConfiguration.Object.Value.Password)).Returns(Task.FromResult(mockResponse));

    service = new Service(applicationConfiguration.Object, mockHttpService.Object, mockLogger.Object, mockCacheService.Object);

    //ACT
    var result = await Service.GetPerformance(It.IsAny<long>(), It.IsAny<DateTimeOffset>(), It.IsAny<DateTimeOffset>(), It.IsAny<string>());

    // ASSERT
    Assert.Collection(result, item => Assert.Equal(something, something));
}

我想在单元测试中使用对象resultToReturn 设置对象mockResponse HTTPResponseMessage 内容，以便当代码进行实际调用时，它能够设置值并且我可以断言结果。

如何设置值？

Answer 1

如何设置值？

将Content 属性设置为包含JSON 序列化Result 的StringContent，例如：

var result = new Result();
...
mockResponse.Content = new StringContent(JsonConvert.SerializeObject(result));