How do you test redirects after POST?
PICTURE THIS: DATA SPLIT
Fit on train, tune on val, report on test once.
Simple meaning
Assert RedirectToActionResult controller and route values.
WHY — Testing instead of guessing?
Why interviewers care about Testing:
question about Testing.
trade-offs, and what you would actually do on a .NET MVC project - not buzzwords.
Name the idea, why it exists, then one short example.
End with when you use it and one common pitfall.
STEPS — What happens step by step?
Before you speak the answer, walk the interviewer through these steps:
- 1Assert RedirectToActionResult controller and
route values.
- 2Follow PRG so tests
hit the GET landing page separately.
- 3How it works
Flash messages live in TempData.
- 4Give an example
One tiny concrete case you can say aloud.
- 5Common mistake
What juniors usually get wrong.
- 6Close
When you pick this over the alternative.
EXAMPLE — See it in action
Here's a short line you can speak, broken into clear beats:
Note: Adapt this scaffold to your own project — keep it under 60–90 seconds.
Key takeaway
Assert RedirectToActionResult controller and route values. Follow PRG so tests hit the GET landing page separately.