QueryAsync() public method

public QueryAsync ( string surveyId, string samplingPointId ) : Task>
surveyId string
samplingPointId string
return Task>
 public void TestQueryAsync_SurveyIdIsNull_Throws()
 {
     var target = new NfieldSamplingPointInterviewerAssignmentsService();
     Assert.Throws<ArgumentNullException>(() =>
             UnwrapAggregateException(target.QueryAsync(null, SamplingPointId)));
 }
        public void TestQueryAsync_ServerReturnsQuery_ReturnsListWithAssignments()
        {
            var expectedAssignments = new []
            {
                new InterviewerSamplingPointAssignmentModel {Active = false, Assigned = false, FirstName = "fn1", InterviewerId = "id1", LastName = "ln1", UserName = "******"},
                new InterviewerSamplingPointAssignmentModel {Active = true, Assigned = true, FirstName = "fn2", InterviewerId = "id2", LastName = "ln2", UserName = "******"}
            };

            var mockedNfieldConnection = new Mock<INfieldConnectionClient>();
            var mockedHttpClient = CreateHttpClientMock(mockedNfieldConnection);

            mockedHttpClient.Setup(client => client.GetAsync(It.IsAny<string>()))
                .Returns(CreateTask(HttpStatusCode.OK, new StringContent(JsonConvert.SerializeObject(expectedAssignments))));

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

            var actualAssignments = target.QueryAsync(SurveyId, SamplingPointId).Result;
            Assert.Equal(expectedAssignments[0].InterviewerId, actualAssignments.ToArray()[0].InterviewerId);
            Assert.Equal(expectedAssignments[1].InterviewerId, actualAssignments.ToArray()[1].InterviewerId);
            Assert.Equal(2, actualAssignments.Count());
        }