public void ExerciseTestMethodGetAll() { var exerciseManager = new ExerciseManager(sUoW, mapper); sUoW.ExerciseRepo.GetAll().Returns(new List <Exercise>() { new Exercise() { TaskName = "TestTask", CreateDateTime = DateTime.Now, UpdateDateTime = DateTime.Now, TaskTextField = "This is UnitTest task" } }); Assert.AreEqual("TestTask", exerciseManager.GetAll().FirstOrDefault().TaskName); }