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   Cypress App Test your modern applications with our open-source app
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TEST. AUTOMATE. ACCELERATE.

With Cypress, you can easily create tests for your modern web applications,
debug them visually, and automatically run them in your continuous integration
builds.

npm install cypress Documentation
http://localhost:3000

Authentication.cy.ts
Button.tsx
Button.cy.tsx
   
 * design-system
     
   * assets
   * cypress
       
     * e2e
         
       * Authentication.cy.ts
         
       
   * src
       
     * components
         
       * Button.cy.tsx
       * Button.tsx
         
       
     
   

describe('login', () => {
  it('user should be able to log in', () => {
    cy.visit('/')

    // open the login modal
    cy.get('button').contains('Login').click()

    // fill in the form
    cy.get('input[type="email"]').type('test@test.com')
    cy.get('input[type="password"]').type('test123')

    // submit the form 
    cy.get('button').contains('Sign in').click()
    cy.contains('button', 'Logout').should('be.visible')
  })
})


describe('login', () => {
  it('user should be able to log in', () => {
    cy.visit('/')

    // open the login modal
    cy.get('button').contains('Login').click()

    // fill in the form
    cy.get('input[type="email"]').type('test@test.com')
    cy.get('input[type="password"]').type('test123')

    // submit the form

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Mercari


Introducing the Cypress App


WRITE, RUN, AND DEBUG LIKE A PRO


TEST MODERN APPS DIRECTLY IN THE BROWSER

Watch your end-to-end and component tests run in real-time as you develop your
applications. Cypress’s simple, yet powerful API runs as fast as your browser
can render content.

Learn more
http://localhost:8080




WRITE YOUR FIRST PASSING TEST IN MINUTES

Installing Cypress and writing your first passing test is a breeze. There are no
servers, drivers, or other dependencies to install or configure.

Learn more

it('user should be able to log in', () => {
  cy.visit('/login')

  // fill in the form
  cy.get('input[type="email"]').type('test@test.com')
  cy.get('input[type="password"]').type('test1234')

  // submit the form
  cy.get('button').contains('Sign in').click()
  cy.contains('button', 'Logout').should('be.visible')
}) // @cy-startTyping



DEBUG FAILURES DIRECTLY IN THE BROWSER

Because Cypress runs directly in the browser, you can debug failed tests using
the in-browser developer tools you already know and love.

Learn more
localhost:8080




ELIMINATE FLAKY TESTS WITH EASE

Cypress deterministically interacts with your application the same way as your
users so you can discover intermittent bugs before your users do.

Learn more
Authentication.cy.js
#102flaky
Auth Login Owner Role



#104flaky
Auth Login Owner Role



.github/workflows/test.yml

on: [push]
jobs:
  cypress:
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Cypress run
        uses: cypress-io/github-action@v5
        with:
          build: npm run build
          start: npm start





INTEGRATE CYPRESS WITH ANY CI PROVIDER

Easily integrate Cypress with your current CI provider. Run Cypress in CI and
you will know as soon as there is a failure. We make it simple to run in CI. Use
our Docker images or bring your own.

Learn more




Introducing Cypress Cloud


INCREASE YOUR PRODUCTIVITY AND CONFIDENCE


OPTIMIZE YOUR RUNS FOR A FASTER FEEDBACK LOOP

Run Cypress in your existing CI pipeline and use test parallelization, load
balancing, spec prioritization, and more to be as efficient as possible with
your available CI resources.

Learn more
Machine 1

Machine 2

Machine 3

Machine 4



REVIEW AND DEBUG FAILURES VISUALLY

Reach new levels of visibility into why your tests failed in CI. Play back
videos of your tests as they failed, read friendly stack trace errors, and never
guess why another test failed.

Learn more



GAIN ACTIONABLE INSIGHTS INTO YOUR TEST SUITE

Monitor your test suite’s health with in-depth analytics. Cypress surfaces
failing and flaky test result trends and config changes that affect your test
suite’s performance.

Learn more



INTEGRATE SEAMLESSLY INTO YOUR WORKFLOW

Plug Cypress into any CI pipeline and you can manage test results as a team
thanks to native integrations with Slack, GitHub, GitLab, JIRA, and more.

Learn more
Search Slack





LOVED BY OSS, TRUSTED BY ENTERPRISE

Cypress is proud to support developers all around the world by making it easier
to build and test modern applications.

5.0M+
Weekly downloads
43K+
GitHub stars
753K+
Dependent repositories
Hakim El Hattab
@hakimel
Go to tweet
Cypress makes me feel about 10x as confident in my work. Just look at those
tests go 🥰
Tobias Struckmeier
@tobmaster
Go to tweet
Every day I learn something awesome new about @Cypress_io.

Its extensibility just makes it the super tool for new approaches and integrates
in most environments. Especially when I compare it with other tools, it always
feels easier and more stable to me.

#testing
Etienne Roudeix
@__etienne
Go to tweet
Hey @Cypress_io just wanted to give you a big 👏👏👏 for the quality of your
documentation. Thank you for the good work.
brent
@BrentA1283
Go to tweet
I've been meaning to express my gratitude to the incredibly talented people who
built and maintain the docs @Cypress_io. From start to finish, it's such an
incredible platform and so much of that is due to how easy it is to get into it
via the top notch documentation! Thank you!
Henrik Joreteg
@HenrikJoreteg
Go to tweet
Overall, settings up @Cypress_io's dashboard service and using GitHub actions to
run all my Cypress tests in parallel has been a big win.

Recommended 👍
Lumigo
@Lumigo
Go to tweet
Cypress makes it possible to have the best of both worlds: a streamlined and
stable testing infrastructure.
Stefan Dili
@DiliStefan
Go to tweet
@Cypress_io is by far the best DX tool I have encountered.
Francesco Mugnai
@francescomugnai
Go to tweet
@Cypress_io is an amazing tool. And the documentation is pure joy. It's like
reading a great book...the more you read it, the more you love it. Thank you,
@Cypress_io!
Irina the nerd 🤓
@IrinaTheNerd
Go to tweet
I need a relaxing morning.

I'll write some @Cypress_io tests.

#WomenWhoCode
Gregoire Pineau
@lyrixx
Go to tweet
I spend the last two days working with @Cypress_io: "A complete end-to-end
testing experience"

I'm **really** impressed by this project. We feel the DX is super important for
them... And it just works© 👏👏👏
Yash Raj
@mister_bourbon
Go to tweet
I'm awestruck with the power of @Cypress_io. It makes the development and
automation experience so awesome that you'll fall in love with it. With the
updates more frequent than your sprint review, cypress is totally disrupting the
market and is here to knock your socks off.
Franck Grenier 🇪🇺🇺🇦
@franckgrenier
Go to tweet
Cypress is a real game changer in e2e testing. It runs inside 2 containers on
our stack. The setup was almost easy and its adoption by the team was immediate.
Now our test coverage is growing fast.

Also mention the amazing test runner tool. @Cypress_io beats them all !
a-deal
@adilconstantine
Go to tweet
Explaining to my 4 year old what I do for work & what automation is. So I showed
him an automated @Cypress_io test & how its clicking and typing.

Me: I made the computer do the work while my hands are not touching it

My son: Oh so you can play with me while computer do work

😅
Sebastian Chwastek
@s_chwastek
Go to tweet
@Cypress_io docs must be one of the best! 🤯 Well done.

It has it all: learning course, real world examples, best practices, even FAQ is
impressive (it has questions I didn't even know I wanted to ask).

All open source too.
Nico
@2co_p
Go to tweet
Opened a pretty big PR to our project in Hyperjump but our comprehensive
@Cypress_io tests make me confident it won't break anything. So proud of my team
👏

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