public async Task UploadFileShouldFailWhenApiCallFails() { var locationBuildService = new Mock <ILocationBuildService>().Object; var responseMessage = new HttpResponseMessage(); responseMessage.StatusCode = HttpStatusCode.UnsupportedMediaType; var filterBuildService = new Mock <IFilterBuildService>().Object; var filterMapper = new Mock <IFilterMapper>().Object; var usersRestApi = new Mock <IUsersRestApi>().Object; var teamsRestApi = new Mock <ITeamsRestApi>().Object; var mapper = new Mock <IMapper>().Object; var workOrderRestApi = new Mock <IWorkOrdersRestApi>().Object; var jsonServiceMock = new Mock <IJsonService <object> >(); var jsonService = jsonServiceMock.Object; var eccSetupRestApiMock = new Mock <IEccSetupRestApi>(); eccSetupRestApiMock.Setup(x => x.UploadPicture(It.IsAny <string>(), It.IsAny <IFormFile>())).Returns(Task.FromResult(responseMessage)); var eccSetupRestApi = eccSetupRestApiMock.Object; var modelDtoConverter = new Mock <IModelDtoConverter>().Object; var mobileService = new MobileService(usersRestApi, teamsRestApi, eccSetupRestApi, workOrderRestApi, filterMapper, filterBuildService, jsonService, locationBuildService, modelDtoConverter, mapper); //Act var response = await mobileService.UploadPicture(new UploadPictureFromForm()); //Assert response.IsFailure.Should().BeTrue(); }