Audits

A11y (accessibility)

• jsx-info

Blackbox Testing

Browser-based Testing Tools

• Appium

Chaos Testing

A11y (accessibility)

• Gremlin
• Psuedo-localization
• Naughty Strings
• testcheck-js
• Chaos Monkey
• ClusterFuzz
• Flow to testcheck

Coverage Reporting

A11y (accessibility)

• istanbul - Yet another JS code coverage tool.
• blanket - A simple code coverage library for javascript. Designed to be easy to install and use, for both browser and nodejs.
• JSCover - JSCover is a tool that measures code coverage for JavaScript programs.

Environment Helpers

A11y (accessibility)

• Solidarity
• EnvInfo

Greybox Testing

Browser-based Testing Tools

• Cypress
• Detox

Linters and Formatters

A11y (accessibility)

• jsx-a11y
• react-native-a11y

Formatters

• Prettier

Linters

• ESLint
• JSHint
• Standard
• Clinton

Maintenance Managers

A11y (accessibility)

• GreenKeeper.io
• DangerJS
• Dependabot
• updtr
• npm-check
• Madge
• Renovate

Performance

A11y (accessibility)

• Web Page Test
• BenchmarkJS

Production Checking / Testing

A11y (accessibility)

• Honeybadger
• Errorception
• Optimizely
• Bug Snag
• App Center

Quality Checks

A11y (accessibility)

• JS Inspect
• buddy.js

Snapshot Testing

Browser-based Testing Tools

• testStateMachine in react-automata
• react-native-view-shot
• storyshots

Tutorials

• Testing React Components - by Valentino Gagliardi
• Fullstack React - Testing Chapter - Day 22 of "30 Days of React"
• Testing JavaScript with Kent C. Dodds - Paid course
• Testing React Native Apps - Jest guide to React Native app testing

Unit Testing

Assertion

• chai - BDD / TDD assertion framework for node.js and the browser that can be paired with any testing framework.
• chai-immutable
• react testing library - Simple and complete React DOM testing utilities that encourage good testing practices.
• React Native Version
• Sinon.JS - Test spies, stubs, and mocks for JavaScript.
• expect.js - Minimalistic BDD-style assertions for Node.JS and the browser.
• React Unit - Lightweight unit test library for ReactJS
• skin-deep - Testing helpers for use with React's shallowRender test utils.
• Enzyme - Enzyme is a JavaScript Testing utility for React that makes it easier to assert, manipulate, and traverse your React Components' output.
• Unexpected React - Plugin for http://unexpected.js.org to enable testing the full React virtual DOM.

Browser-based Testing Tools

• phantomjs - Scriptable Headless WebKit.
• slimerjs - A PhantomJS-like tool running Gecko.
• casperjs - Navigation scripting & testing utility for PhantomJS and SlimerJS.
• zombie - Insanely fast, full-stack, headless browser testing using node.js.
• totoro - A simple and stable cross-browser testing tool.
• karma - Spectacular Test Runner for JavaScript.
• nightwatch - UI automated testing framework based on node.js and selenium webdriver.

Jest

• Jest Fetch Mock - Jest mock for the fetch polyfill.
• AWESOME-JEST

Other Frameworks

• mocha - Simple, flexible, fun javascript test framework for node.js & the browser.
• jasmine - DOM-less simple JavaScript testing framework.
• prova - Node & Browser test runner based on Tape and Browserify
• DalekJS - Automated cross browser functional testing with JavaScript
• Protractor - Protractor is an end-to-end test framework for AngularJS applications.
• TestCafe - Automated browser testing for the modern web development stack.
• ava - 🚀 Futuristic JavaScript test runner
• intern - A next-generation code testing stack for JavaScript.
• tape - Tap-producing test harness for node and browsers.
• qunit - An easy-to-use JavaScript Unit Testing framework.