Tag: Testing

All the articles with the tag "Testing".

• How to Test Custom Hooks with React Testing Library and Jest

  Updated:Jun 14, 2023 |  at 10:08 AM

  Learn how to test your custom React Hooks with React Testing Library and Jest. You'll find an interactive Codesandox at the end of the post.

• How to test props in React Testing Library

  Updated:Oct 23, 2026 |  at 12:00 PM

  Mock the child with jest.mock and read the prop from the text. On Jest 30 the mock variable's name has to start with mock.

• How to migrate from Mocha to Jest

  Updated:Jun 24, 2021 |  at 02:46 PM

  Move a Mocha suite to Jest with small edits instead of rewriting tests, including JSDOM via Jest's testEnvironment and mocha.opts.

• Why avoid testing implementation details

  Updated:Jun 24, 2021 |  at 03:08 PM

  Why tests that lock onto implementation details slow a project down, and what to assert so refactors stay safe.