public void Post_Creates_New_Business() { var newBusiness = new Business(1, "Name", "Industry", "Image", 1); var BusinessList = new List <Business>(); businessRepo.When(t => t.Create(newBusiness)) .Do(t => BusinessList.Add(newBusiness)); businessRepo.GetAll().Returns(BusinessList); var result = underTest.Post(newBusiness); Assert.Contains(newBusiness, result); }