API Testing Comparison: Cypress vs. Playwright vs. Jest

There is an implementation of a bunch of the same tests for each framework: Cypress, Playwright, and Jest as a test runner + Axios as HTTP library.

Example API for testing: OpenWeatherMap API, which requires a key for authorization (API_KEY env variable).

How to Use

1. Clone repository
2. Install dependencies: npm install
3. Install Cypress as per the documentation
4. Run all tests: API_KEY={string} npm run test

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Read more in the article «API Testing Comparison: Cypress vs. Playwright vs. Jest».

Methods of gathering results for the article:

• time API_KEY={string} npm run cypress:run
• time API_KEY={string} npm run test:playwright
• time API_KEY={string} npm run test:jest

Resulting average results:

• Cypress:run command time: 12,96 sec
• Playwright command time: 3,21 sec
• Jest command time: 3,84 sec

This means that Сypress is 4 times slower than Playwright.