Testing · Senior · Question 5 of 75

Why are the terms “unit” and “integration” test often ambiguous in discussions?

✓Correct answer: Teams define the “unit” differently - a function, a class, a module or a feature - so agree on what each level means in your project
2Because the terms are deprecated
3Because Jest and Vitest use different definitions

Explanation

Fowler distinguishes sociable vs solitary unit tests; what matters is speed, isolation and confidence, not the label.

Further reading

Test yourself

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