public void B_GetCategoriesApiTest() { IEnumerable <WorkoutCategory> result = null; var controller = new WorkoutTrackerController(workoutService, categoryService, _logManager); controller.Request = new HttpRequestMessage(); controller.Configuration = new HttpConfiguration(); controller.Request.Headers.Add("Accept", "application/json"); var response = controller.GetCategories(); result = response.Content.ReadAsAsync <IEnumerable <WorkoutCategory> >().Result; Assert.AreEqual(HttpStatusCode.OK, response.StatusCode); Assert.AreNotEqual(null, result); response.Dispose(); }