Cucumber.js

Cucumber is a tool for running automated tests written in plain language. Because they're written in plain language, they can be read by anyone on your team. Because they can be read by anyone, you can use them to help improve communication, collaboration and trust on your team.

Cucumber.js is the JavaScript implementation of Cucumber and runs on the maintained Node.js versions.

Try it now

We've put a demo of Cucumber.js to run in your browser. Why don't you give it a try before anything else?

Help & support

• See here: https://cucumber.io/support.

Contributing

See CONTRIBUTING.md for info on contributing to Cucumber.js.

Code of Conduct

Everyone interacting in this codebase and issue tracker is expected to follow the Cucumber code of conduct.

Install

Cucumber.js is available as an npm module.

7.x.x and above

$ npm install @cucumber/cucumber

If you're upgrading from 6.x.x or below, see the migration guide.

6.x.x and below

$ npm install cucumber@6

Documentation

The following documentation is for master. See below the documentation for older versions.

• CLI
• NodeJs Example
• Support Files
  • World
  • Step Definitions
  • Hooks
  • Timeouts
  • Data Table Interface
  • Attachments
  • API Reference
• Guides
  • Dry Run
  • ES Modules
  • Formatters
  • Running in parallel
  • Profiles
  • Rerunning just failures
  • Retrying flaky scenarios
  • Snippets for undefined steps
• FAQ

Documentation for older versions

• 6.x
• 5.x
• 4.x
• 3.x
• 2.x
• 1.x