public async Task OnPostAsync_GivenNullOrEmptyCalculationId_ReturnsBadRequest()
        {
            //Arrange
            const string calculationId = "";

            CalculationProviderResultsPageModel pageModel = CreatePageModel();

            //Act
            IActionResult result = await pageModel.OnPostAsync(calculationId, null, "");

            //Assert
            result
            .Should()
            .BeOfType <BadRequestObjectResult>();
        }
        public async Task OnPostAsync_GivenCalculationCouldNotBeFound_ReturnsNotFound()
        {
            //Arrange
            const string calculationId = "calc-id";

            ApiResponse <Clients.CalcsClient.Models.Calculation> calculation = new ApiResponse <Clients.CalcsClient.Models.Calculation>(HttpStatusCode.NotFound);

            ICalculationsApiClient calculationsApiClient = CreateCalculationsApiClient();

            calculationsApiClient
            .GetCalculationById(Arg.Is(calculationId))
            .Returns(calculation);

            CalculationProviderResultsPageModel pageModel = CreatePageModel(calculationsApiClient: calculationsApiClient);

            //Act
            IActionResult result = await pageModel.OnPostAsync(calculationId, null, "");

            //Assert
            result
            .Should()
            .BeOfType <NotFoundResult>();
        }
        public async Task OnPostAsync_GivenCalculationFoundButGettingAssignedSchemasForSpecRetunsOKWithNullContent_ReturnsStatusCode500()
        {
            const string calculationId   = "calc-id";
            const string specificationId = "spec-id";

            Calculation calculation = new Calculation
            {
                Id = calculationId,
                SpecificationId = specificationId
            };

            CalculationViewModel calculationViewModel = new CalculationViewModel
            {
                Id = calculationId,
                SpecificationId = specificationId
            };

            ApiResponse <Calculation> CalculationResponse = new ApiResponse <Calculation>(HttpStatusCode.OK, calculation);

            ICalculationsApiClient calculationsApiClient = CreateCalculationsApiClient();

            calculationsApiClient
            .GetCalculationById(Arg.Is(calculationId))
            .Returns(CalculationResponse);

            IMapper mapper = CreateMapper();

            mapper
            .Map <CalculationViewModel>(Arg.Is(calculation))
            .Returns(calculationViewModel);

            ICalculationProviderResultsSearchService calculationProviderResultsSearchService = CreateResultsSearchService();

            IEnumerable <DatasetSchemasAssigned> datasetSchemasAssignedList = new[]
            {
                new DatasetSchemasAssigned
                {
                    IsSetAsProviderData = true
                }
            };

            ApiResponse <IEnumerable <DatasetSchemasAssigned> > datasetSchemaResponse = new ApiResponse <IEnumerable <DatasetSchemasAssigned> >(HttpStatusCode.OK);

            IDatasetsApiClient datasetsApiClient = CreateDatasetsApiClient();

            datasetsApiClient
            .GetAssignedDatasetSchemasForSpecification(Arg.Is(specificationId))
            .Returns(datasetSchemaResponse);

            ISpecsApiClient specsApiClient = CreateSpecsApiClient();

            specsApiClient.GetSpecificationSummaries(Arg.Any <IEnumerable <string> >())
            .Returns(new ApiResponse <IEnumerable <Clients.SpecsClient.Models.SpecificationSummary> >(HttpStatusCode.OK, Enumerable.Empty <Clients.SpecsClient.Models.SpecificationSummary>()));

            Clients.SpecsClient.Models.SpecificationSummary specificationSummary = new Clients.SpecsClient.Models.SpecificationSummary()
            {
                Id = specificationId,
            };

            specsApiClient
            .GetSpecificationSummary(Arg.Is(specificationId))
            .Returns(new ApiResponse <Clients.SpecsClient.Models.SpecificationSummary>(HttpStatusCode.OK, specificationSummary));

            CalculationProviderResultsPageModel pageModel = CreatePageModel(
                calculationProviderResultsSearchService,
                calculationsApiClient,
                mapper: mapper,
                datasetsApiClient: datasetsApiClient,
                specsApiClient: specsApiClient);

            //Act
            IActionResult result = await pageModel.OnPostAsync(calculationId, null, "");

            //Assert
            result
            .Should()
            .BeOfType <StatusCodeResult>();

            StatusCodeResult statusCodeResult = result as StatusCodeResult;

            statusCodeResult
            .StatusCode
            .Should()
            .Be(500);
        }
        public async Task OnGetAsync_GivenCalculationFoundWithEmptySearchResults_ReturnsPage()
        {
            //Arrange
            const string calculationId   = "calc-id";
            const string specificationId = "spec-id";

            Calculation calculation = new Calculation
            {
                Id = calculationId,
                SpecificationId = specificationId
            };

            CalculationViewModel calculationViewModel = new CalculationViewModel
            {
                Id = calculationId,
                SpecificationId = specificationId
            };

            IEnumerable <DatasetSchemasAssigned> datasetSchemasAssignedList = new[]
            {
                new DatasetSchemasAssigned
                {
                    IsSetAsProviderData = true
                }
            };

            ApiResponse <IEnumerable <DatasetSchemasAssigned> > datasetSchemaResponse = new ApiResponse <IEnumerable <DatasetSchemasAssigned> >(HttpStatusCode.OK, datasetSchemasAssignedList);

            IDatasetsApiClient datasetsApiClient = CreateDatasetsApiClient();

            datasetsApiClient
            .GetAssignedDatasetSchemasForSpecification(Arg.Is(specificationId))
            .Returns(datasetSchemaResponse);

            CalculationProviderResultSearchResultViewModel calculationProviderResultSearchResultViewModel = new CalculationProviderResultSearchResultViewModel
            {
                CalculationProviderResults = Enumerable.Empty <CalculationProviderResultSearchResultItemViewModel>()
            };

            ApiResponse <Calculation> CalculationResponse = new ApiResponse <Calculation>(HttpStatusCode.OK, calculation);

            ICalculationsApiClient calculationsApiClient = CreateCalculationsApiClient();

            calculationsApiClient
            .GetCalculationById(Arg.Is(calculationId))
            .Returns(CalculationResponse);

            IMapper mapper = CreateMapper();

            mapper
            .Map <CalculationViewModel>(Arg.Is(calculation))
            .Returns(calculationViewModel);

            ICalculationProviderResultsSearchService calculationProviderResultsSearchService = CreateResultsSearchService();

            calculationProviderResultsSearchService
            .PerformSearch(Arg.Any <SearchRequestViewModel>())
            .Returns(calculationProviderResultSearchResultViewModel);

            ISpecsApiClient specsApiClient = CreateSpecsApiClient();

            specsApiClient.GetSpecificationSummaries(Arg.Any <IEnumerable <string> >())
            .Returns(new ApiResponse <IEnumerable <Clients.SpecsClient.Models.SpecificationSummary> >(HttpStatusCode.OK, Enumerable.Empty <Clients.SpecsClient.Models.SpecificationSummary>()));

            Clients.SpecsClient.Models.SpecificationSummary specificationSummary = new Clients.SpecsClient.Models.SpecificationSummary()
            {
                Id = specificationId,
            };

            specsApiClient
            .GetSpecificationSummary(Arg.Is(specificationId))
            .Returns(new ApiResponse <Clients.SpecsClient.Models.SpecificationSummary>(HttpStatusCode.OK, specificationSummary));

            CalculationProviderResultsPageModel pageModel = CreatePageModel(
                calculationProviderResultsSearchService,
                calculationsApiClient,
                mapper: mapper,
                datasetsApiClient: datasetsApiClient,
                specsApiClient: specsApiClient);

            //Act
            IActionResult result = await pageModel.OnGetAsync(calculationId, null, "");

            //Assert
            result
            .Should()
            .BeOfType <PageResult>();

            pageModel
            .CalculationProviderResults
            .CalculationProviderResults
            .Any()
            .Should()
            .BeFalse();
        }