Cucumber.js vs Jest
Cucumber.js
cucumber.io
Jest
jestjs.ioSide by side
| Figure | Cucumber.js | Jest |
|---|---|---|
| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| Self-hosted | Yes | Yes |
| Plans published | 2 | 1 |
| Spec score · JavaScript Testing Frameworks | 9.0 (#1) | 7.7 (#8) |
| Integrations | Cucumber says it is not a browser automation tool, but works with browser automation tools such as Selenium WebDriver. | The guide documents use with webpack and Parcel, and says Jest is not supported by Vite because of plugin system incompatibilities. |
| Purpose | Cucumber reads executable specifications written in plain text and checks whether software conforms to them, reporting success or failure for each scenario. | Jest is a JavaScript testing framework focused on simplicity and correctness. |
| Security | The project says it has a security policy that explains how to contact maintainers about security issues. | The Jest repository links a security policy, but the official pages opened did not state a security certification or compliance standard. |
| Support | The FAQ directs users with questions to the Cucumber community and lists Cucumber School online training for deeper learning. | The site points users to Stack Overflow, Reactiflux, and Twitter for community help. |
Plans
In their own words
Cucumber.js
Cucumber.js checks software against executable specifications written as plain-text scenarios, reporting whether each scenario passes or fails. It is the JavaScript implementation of Cucumber and runs on Node.js. Scenarios use Gherkin syntax and are usually kept in `.feature` files alongside the software in source control. Step definitions connect each Gherkin step to code that carries out its described action; expressions can use Cucumber Expressions or regular expressions, but not both syntaxes in a single expression.
The tool runs feature files from the command line and can run in continuous integration, including parallel execution. Reporter plugins can produce results, and reports can be published to Cucumber Reports with `--publish`. Published reports are public and deleted after 24 hours. Cucumber.js is available as the `@cucumber/cucumber` npm module, installed as a development dependency with npm or Yarn. The setup requires Node.js and one of those package managers. It is free and open source, with Linux, macOS, Windows, and self-hosted platforms listed. It works with browser automation tools, but is not itself one.
Jest
Jest is a free, self-hosted JavaScript testing framework focused on checking correctness. It supports projects using Babel, TypeScript, Node, React, Angular, Vue and other technologies, and aims to run without configuration on most JavaScript projects. Snapshot tests compare rendered output with a saved reference. Tests run in separate processes for parallel execution, while the --coverage flag can collect coverage, including from files without tests. Mock functions and a custom import resolver support replacing objects and observing calls. Interactive watch mode reruns tests related to changed files. Installation guidance covers npm, Yarn, pnpm and Bun. Documentation describes webpack and Parcel use, but states that Vite is unsupported because of plugin-system incompatibilities. With Babel handling TypeScript, Jest transpiles tests without type-checking them during execution. A free plan is listed at free, with no paid plans or usage limits stated.