public void TestUpdateUser() { ProjectManagerController taskManagerController = new ProjectManagerController(); taskManagerController.AddUser(new Models.User() { FirstName = "editUser", LastName = "test", EmployeeId = "empId" }); IEnumerable <User> users = taskManagerController.GetAllUsers(); Assert.IsNotNull(users); User user = users.Where(t => t.FirstName == "editUser").FirstOrDefault(); string newName = user.FirstName + "Renamed"; user.FirstName = newName; taskManagerController.UpdateUser(user); user = taskManagerController.GetUser(user.UserId); Assert.IsTrue(user.FirstName == newName); }