public void TestQueryAsync_WhenFilePresent_ReturnsCorrectName() { const string surveyId = "SurveyId"; const string fileName = "MyFileName"; var expected = new List<string>() { fileName }; var mockedNfieldConnection = new Mock<INfieldConnectionClient>(); var mockedHttpClient = CreateHttpClientMock(mockedNfieldConnection); mockedHttpClient .Setup(client => client.GetAsync(ServiceAddress + "Surveys/" + surveyId + "/MediaFiles/")) .Returns(CreateTask(HttpStatusCode.OK, new StringContent(JsonConvert.SerializeObject(expected)))); var target = new NfieldMediaFilesService(); target.InitializeNfieldConnection(mockedNfieldConnection.Object); var actual = target.QueryAsync(surveyId).Result.ToList(); Assert.Equal(1, actual.Count); Assert.Equal(fileName, actual[0]); }