What is Cypress?
Cypress is a modern front-end testing tool built for the web. It is fast, reliable, and easy to set up. It enables developers and QA to write automated tests for UI and API with real-time reloads and rich debugging.
Why Use Cypress?
- Fast test execution with real-time reloads
- Great for modern JavaScript frameworks (React, Angular, Vue)
- Built-in support for retries, waits, screenshots, and video recording
- Works directly in the browser with no need for WebDriver
Getting Started
- Install via npm:
npm install cypress --save-dev
- Open Cypress test runner:
npx cypress open
- Tests are written in JavaScript or TypeScript
- Test files are placed inside the
cypress/e2e/
directory
Common Cypress Commands
cy.visit()
– Navigate to a pagecy.get()
– Query DOM elementscy.contains()
– Match text in DOMcy.intercept()
– Intercept API callscy.click()
,cy.type()
,cy.select()
Pro Tips
- Use
data-testid
for robust element selectors - Group similar tests with
describe()
andit()
- Integrate Cypress with GitHub Actions or Jenkins
- Use Cypress Dashboard for debugging flaky tests
Best Practices
- Keep tests independent and atomic
- Avoid relying on UI animations or time-based waits
- Mock API responses where necessary
- Use fixtures for test data
- Clean up state before each test