Testing · Senior · Question 31 of 75

What is in-source testing in Vitest?

✓Correct answer: Tests written in the same file as the code inside if (import.meta.vitest), removed from the production build
2Running tests against source maps
3A mode where tests are generated from comments

Explanation

Handy for small private helpers; the bundler strips the block via define: { "import.meta.vitest": "undefined" }.

Further reading

Vitest: In-Source Testing ↗

Test yourself

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