Enzyme quiz

Test your Enzyme knowledge with a free interactive quiz — 20 questions with answers and explanations. No signup needed to play.

Why has Enzyme's ecosystem relevance declined somewhat since React 17/18, and what is the commonly recommended modern alternative for React component testing?

1. Why has Enzyme's ecosystem relevance declined somewhat since React 17/18, and what is the commonly recommended modern alternative for React component testing?
2. What does `wrapper.text()` return on an Enzyme wrapper?
3. What is the key difference between `shallow()` and `mount()` rendering in Enzyme?
4. What does the Enzyme `.find()` method do on a rendered wrapper?
5. What does it mean that Enzyme's `shallow()` rendering "does not render into an actual DOM," and what does that make it unsuitable for testing?
6. What is snapshot testing, and how does it sometimes get used alongside (or instead of) Enzyme's more granular assertions?
7. Why might overusing `mount()` (full DOM rendering, including all children) for every single component test in a large test suite become a performance concern?
8. What does `wrapper.props()` return when called on an Enzyme wrapper?
9. What are the three rendering methods Enzyme provides?
10. Why is `shallow()` rendering often preferred for true "unit" testing of a single React component?
11. What does `wrapper.state()` (on a mounted class component wrapper) allow you to do?
12. How would you simulate a user clicking a button in an Enzyme test?

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