public void UpdateDistrictTest() { //Arrange var controller = new DistrictController(); District testDistrict = new District { Id = 6, Name = "Test Update", PrimarySalesperson = new Salesperson { Id = 1 }, Salespersons = new List <Salesperson>() }; //Act IHttpActionResult result = controller.PutDistrict(testDistrict); var contentResult = result as NegotiatedContentResult <District>; //Assert Assert.IsNotNull(contentResult); Assert.AreEqual(HttpStatusCode.Accepted, contentResult.StatusCode); Assert.IsNotNull(contentResult.Content); }