@web/test-runner NPM

Web Test Runner

Test runner for web applications.

👉 Headless browsers with Puppeteer, Playwright, or Selenium. 🚧 Reports logs, 404s, and errors from the browser. 🔍 Debug opens a real browser window with devtools. 📦 Mock es modules using Import Maps. 🔧 Exposes browser properties like viewport size and dark mode. ⏱ Runs tests in parallel and isolation. 👀 Interactive watch mode. 🏃 Fast development by rerunning only changed tests. 🚀 Powered by esbuild and rollup plugins

See our website for full documentation.

Installation

Install the web test runner:

npm i --save-dev @web/test-runner

Basic commands

Do a single test run:

web-test-runner test/**/*.test.js --node-resolve
wtr test/**/*.test.js --node-resolve

Run in watch mode, reloading on file changes:

web-test-runner test/**/*.test.js --node-resolve --watch
wtr test/**/*.test.js --node-resolve --watch

Run with code coverage profiling (this is slower):

web-test-runner test/**/*.test.js --node-resolve --coverage
wtr test/**/*.test.js --node-resolve --coverage

Transform JS to a compatible syntax based on user agent:

web-test-runner test/**/*.test.js --node-resolve --esbuild-target auto
wtr test/**/*.test.js --node-resolve --esbuild-target auto

Guide

Check out this step by step guide to get started.

Example projects

Check out the example projects for a fully integrated setup.

Documentation

See our website for full documentation.

web test runner testrunner default implementation cli

@web/browser-logs @web/config-loader @web/dev-server @web/test-runner-chrome @web/test-runner-commands @web/test-runner-core @web/test-runner-mocha camelcase command-line-args command-line-usage convert-source-map diff globby nanocolors portfinder source-map

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