使用xUnit编写单元测试时，如何在控制器方法内达到int变量

Question

I am trying to write unit test for my controller. I am using xUnit to test my methots.

I can reach "changePasswordX" method inside my controller to test but i can not reach to my userId variable and claim value to check are they equal or not ?

How can i test this code in xUnit?

    [HttpGet("ChangePassword")]
    public async Task<IActionResult> ChangePassword(int userId, oldPassword, newPassword)
    {      
        if (userId != int.Parse(User.FindFirst(ClaimTypes.NameIdentifier).Value))
            return Unauthorized();

         _repo.changePasswordX(userId, oldPassword, newPassword);

        return Ok();
    }

Answer 1

Unit testing does not test every intermediate result of every step of a method.

Unit testing is meant to test the overall output or return value of a method, given certain inputs.

If you need to test that single line of code, then put it in a separate location (library) where it can be called and tested.

Answer 2

It's not clear what you're actually trying to achieve, but this is the wrong way to be writing unit/integration tests, regardless. You don't and shouldn't test the value of userId versus the claim yourself in your unit test. You know that if it doesn't match, your action returns and an UnauthorizedResult , whereas if it matches, you'll get an OkResult . If you're unit testing, you simply stub out your user principal, call the action as a method, and verify the return. If you're integration testing, the procedures mostly the same: you authorize the call, and verify that the status code is either 401 or 200, depending on which case you're testing.