public async Task HandleAsync_WithSchemeSpecified_GeneratesCorrectFileName() { IWeeeAuthorization authorization = AuthorizationBuilder.CreateUserWithAllRights(); IStoredProcedures storedProcedures = A.Fake <IStoredProcedures>(); SpgSchemeWeeeCsvResult storedProcedureResult = new SpgSchemeWeeeCsvResult(); storedProcedureResult.Schemes.Add(new SpgSchemeWeeeCsvResult.SchemeResult() { SchemeId = new Guid("C5AD2FF9-941D-4D6F-B68B-9805DD7E1FD1"), ApprovalNumber = "WEE/AA1111AA/SCH" }); A.CallTo(() => storedProcedures.SpgSchemeWeeeCsvAsync(A <int> ._, A <Guid?> ._, A <string> ._)) .Returns(storedProcedureResult); GetSchemeWeeeCsvHandler handler = new GetSchemeWeeeCsvHandler( storedProcedures, authorization, A.Dummy <CsvWriterFactory>()); GetSchemeWeeeCsv request = new GetSchemeWeeeCsv(2016, new Guid("C5AD2FF9-941D-4D6F-B68B-9805DD7E1FD1"), ObligationType.B2C); // Act SystemTime.Freeze(new DateTime(2016, 12, 31, 23, 59, 0)); FileInfo result = await handler.HandleAsync(request); SystemTime.Unfreeze(); // Assert Assert.Equal("2016_WEEAA1111AASCH_B2C_schemeWEEE_31122016_2359.csv", result.FileName); }