public void Password_Change_Must_Set_New_LastPasswordChangedDate() { // Arrange User user = new User("username", password, passwordCoder); // Act var isPasswordChanged = user.ChangePassword(password, fakePassword, passwordCoder); // Assert Assert.IsTrue(isPasswordChanged, "Password isn't changed."); Assert.AreNotEqual(user.CreationDate, user.LastPasswordChangedDate, "LastPasswordChangedDate and CreationDate are equal."); }