Nfield.Services.Implementation.NfieldSurveysService.AddAsync C# (CSharp) Method

        public Task<Survey> AddAsync(Survey survey)
        {
            if (survey == null)
            {
                throw new ArgumentNullException("survey");
            }

            return Client.PostAsJsonAsync(SurveysApi.AbsoluteUri, survey)
                         .ContinueWith(task => task.Result.Content.ReadAsStringAsync().Result)
                         .ContinueWith(task => JsonConvert.DeserializeObject<Survey>(task.Result))
                         .FlattenExceptions();
        }

        public void TestAddAsync_ServerAccepts_ReturnsSurvey()
        {
            var survey = new Survey(SurveyType.Basic) { SurveyName = "New Survey" };
            var mockedNfieldConnection = new Mock<INfieldConnectionClient>();
            var mockedHttpClient = CreateHttpClientMock(mockedNfieldConnection);
            var content = new StringContent(JsonConvert.SerializeObject(survey));
            mockedHttpClient
                .Setup(client => client.PostAsJsonAsync(ServiceAddress + "surveys/", survey))
                .Returns(CreateTask(HttpStatusCode.OK, content));

            var target = new NfieldSurveysService();
            target.InitializeNfieldConnection(mockedNfieldConnection.Object);

            var actual = target.AddAsync(survey).Result;

            Assert.Equal(survey.SurveyName, actual.SurveyName);
            Assert.Equal(survey.SurveyType, actual.SurveyType);
        }