Frontend Developer
mediumfrontend-unit-testing
How do you unit test frontend components effectively?
Answer
Good component tests focus on behavior.
**Principles:**
- Test user-visible outcomes (text, ARIA roles, interactions)
- Avoid testing internal implementation details
- Mock network calls and isolate external dependencies
- Keep tests fast and deterministic
Use a test runner (Vitest/Jest) and a DOM testing library to simulate real user interactions.
Related Topics
TestingFrontendJavaScript