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Cypress is a next-generation front end testing tool built for the modern web. It is a feature-rich end-to-end testing framework that makes testing anything that runs in a browser easier. Cypress provides a robust, complete framework for running automated tests on web applications.
End-to-End Testing
Cypress can be used to perform end-to-end testing on web applications. The code sample demonstrates how to visit a webpage, interact with elements, and assert that the actions have the expected outcome.
cy.visit('https://example.com')
.get('.new-todo')
.type('Learn Cypress{enter}')
.get('.todo-list li')
.should('have.length', 1)
Integration Testing
Cypress can also be used for testing React components by mounting them in the test runner. The code sample shows how to mount a component, simulate user interaction, and assert the result.
cy.mount(<MyComponent />)
.get('button').click()
.get('.result').should('contain', 'Clicked')
API Testing
Cypress can perform API testing by sending HTTP requests and asserting the responses. The code sample demonstrates how to send a POST request to an API endpoint and validate the response.
cy.request('POST', '/api/items', { name: 'Cypress' })
.then((response) => {
expect(response.body).to.have.property('id')
expect(response.body).to.have.property('name', 'Cypress')
})
Visual Testing
With the help of plugins, Cypress can be extended to perform visual regression testing. The code sample shows how to take a snapshot of an element and compare it to a baseline image for visual differences.
cy.visit('https://example.com')
.get('.important-element')
.matchImageSnapshot()
Selenium WebDriver is one of the most popular browser automation tools. It supports multiple browsers and programming languages. Compared to Cypress, Selenium tests can be slower and more flaky due to reliance on a separate server (Selenium Server) and the need to manage browser drivers.
Puppeteer is a Node library which provides a high-level API to control Chrome or Chromium over the DevTools Protocol. It is typically faster than Selenium and can be used for both end-to-end testing and web scraping. Unlike Cypress, Puppeteer only works with Chrome/Chromium, while Cypress supports multiple browsers.
Playwright is a Node library to automate the Chromium, WebKit, and Firefox browsers with a single API. It is similar to Puppeteer but provides cross-browser support. Playwright offers more features out of the box compared to Cypress, such as native mobile emulation.
TestCafe is a Node.js tool to automate end-to-end web testing. It is easy to set up and does not require WebDriver. TestCafe runs on multiple browsers and operating systems and can execute tests concurrently. It is a good alternative to Cypress with a different set of trade-offs, particularly in terms of test speed and debugging capabilities.
Fast, easy and reliable testing for anything that runs in a browser.
Cypress comes packaged as an npm
module, which is all you need to get started testing.
After installing you'll be able to:
require
Cypress as a modulePlease check our system requirements.
npm install --save-dev cypress
Please visit our documentation for a full list of commands and examples.
FAQs
Cypress is a next generation front end testing tool built for the modern web
We found that cypress demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 2 open source maintainers collaborating on the project.
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Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
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