public async Task GetFlowsShouldReturnFailureWhenBadRequestReceivedFromApi() { //Arrange var locationBuildService = new Mock <ILocationBuildService>().Object; var jsonService = new Mock <IJsonService <object> >().Object; var usersRestApi = new Mock <IUsersRestApi>().Object; var teamsRestApi = new Mock <ITeamsRestApi>().Object; var workOrdersRestApi = new Mock <IWorkOrdersRestApi>().Object; var filterMapper = new Mock <IFilterMapper>().Object; var mapper = new Mock <IMapper>().Object; var filterString = "source%20eq%20%27source%27%20and%20operation%20eq%20%27operation%27%20and%20site%20eq%20%27site%27%20and%20department%20eq%20%27operational%20department%27%20and%20type-planning%20eq%20%27Type%20planning%27%20and%20customer%20eq%20%27Customer%27%20and%20prodsite%20eq%20%27Production%20site%27%20and%20transport-type%20eq%20%27Transport%20type%27%20and%20driver-wait%20eq%20%27Yes%27"; var filterBuildServiceMock = new Mock <IFilterBuildService>(); filterBuildServiceMock.Setup(x => x.BuildFlowFilter(It.IsAny <FlowFilterFromBody>())).Returns(filterString); var filterBuildService = filterBuildServiceMock.Object; var responseMessage = new HttpResponseMessage(); responseMessage.StatusCode = HttpStatusCode.BadRequest; responseMessage.Content = new StringContent("{\"count\":1,\"nextLink\":null,\"value\":[{\"id\":\"5fb3e62e-120d-49c7-8939-c0d7f93ee5ae\",\"name\":\"UpdatedName\",\"description\":\"Description\",\"image\":\"Image\",\"diagram\":\"diagram\",\"filterContent\":\"{}\",\"filter\":{\"sources\":[{\"name\":\"x\"}],\"operations\":[{\"name\":\"x\"}],\"sites\":[{\"name\":\"x\"}],\"operationalDepartments\":[{\"name\":\"x\"}],\"typePlannings\":[{\"name\":\"x\"}],\"customers\":[{\"name\":\"x\"}],\"productionSites\":[{\"name\":\"x\"}],\"transportTypes\":[{\"name\":\"x\"}],\"driverWait\":\"x\"}}]}"); var eccSetupRestApiMock = new Mock <IEccSetupRestApi>(); eccSetupRestApiMock.Setup(x => x.GetFlow(It.IsAny <string>())).Returns(Task.FromResult(responseMessage)); var eccSetupRestApi = eccSetupRestApiMock.Object; var modelDtoConverter = new Mock <IModelDtoConverter>().Object; var mobileService = new MobileService(usersRestApi, teamsRestApi, eccSetupRestApi, workOrdersRestApi, filterMapper, filterBuildService, jsonService, locationBuildService, modelDtoConverter, mapper); //Act var response = await mobileService.GetFlow(new FlowFilterFromBody()); //Assert response.IsFailure.Should().BeTrue(); }