NestJS · Middle · Question 41 of 75

In an e2e test, why apply the same global pipes and filters as in `main.ts`?

1Pipes don't work in tests
2Tests require different pipes
✓Correct answer: Settings made in main.ts aren't part of AppModule, so the test app doesn't get them unless you add them again or register them with APP_* providers

Explanation

Registering global pipes and filters as APP_PIPE/APP_FILTER providers inside the module avoids this mismatch.

Further reading

Test yourself

Take the NestJS · Middle quiz: questions and options are shuffled, and you get a review of your mistakes at the end.