public async Task AddNoteWithAttachments_ShouldReturnOk_OnSuccessfulServiceCall() { var model = new NoteWithAttachments { Attachments = new List <StockportGovUK.NetStandard.Models.FileManagement.File>(), AttachmentsDescription = "description", CaseRef = 123456789123 }; var result = await _caseController.AddNoteWithAttachments(model); _mockCaseService.Verify(service => service.CreateNotesWithAttachment(It.IsAny <NoteWithAttachments>()), Times.Once); var okResult = Assert.IsType <OkResult>(result); Assert.Equal(200, okResult.StatusCode); }