Cypress
Developer-friendly E2E and component testing for web apps. Famous for its time-travel debugging, real browser testing, and the best-in-class test runner UI that shows tests executing live.
Why Cypress?
E2E testing with visual time-travel debugging
Component testing for React/Vue/Angular in a real browser
Your team prefers an interactive test runner over headless CI
Signal Breakdown
What drives the Trust Score
Download Trend
Last 12 months
Tradeoffs & Caveats
Know before you commitMulti-browser testing is required — Cypress only runs Chromium-based
Python backend testing — Playwright has better Python SDK
Performance testing at scale — Playwright handles parallelism better
Pricing
Free tier & paid plans
Open source runner (unlimited local tests)
Cypress Cloud from $67/mo
Local testing always free
Alternative Tools
Other options worth considering
Often Used Together
Complementary tools that pair well with Cypress
Learning Resources
Docs, videos, tutorials, and courses
Get Started
Repository and installation options
View on GitHub
github.com/cypress-io/cypress
npm install --save-dev cypressQuick Start
Copy and adapt to get going fast
// cypress/e2e/checkout.cy.ts
describe('Checkout flow', () => {
beforeEach(() => cy.login());
it('completes a purchase', () => {
cy.visit('/products');
cy.get('[data-cy="product-card"]').first().click();
cy.get('[data-cy="add-to-cart"]').click();
cy.get('[data-cy="cart-count"]').should('contain', '1');
cy.get('[data-cy="checkout"]').click();
cy.url().should('include', '/checkout');
});
});Code Examples
Common usage patterns
Intercept API requests
Stub network calls in Cypress tests
// cypress/e2e/posts.cy.ts
it('displays stubbed posts', () => {
cy.intercept('GET', '/api/posts', {
body: [{ id: 1, title: 'Hello World' }],
}).as('getPosts');
cy.visit('/posts');
cy.wait('@getPosts');
cy.contains('Hello World').should('be.visible');
});Component test
Test a React component in isolation
// cypress/component/Button.cy.tsx
import { Button } from '../../src/components/Button';
describe('Button', () => {
it('calls onClick when clicked', () => {
const onClick = cy.stub().as('onClick');
cy.mount(<Button onClick={onClick}>Click me</Button>);
cy.get('button').click();
cy.get('@onClick').should('have.been.calledOnce');
});
});Community Notes
Real experiences from developers who've used this tool