Awesome Jest

An awesome list of Jest packages and resources

Contents

• Packages
  • Matchers
  • IDE
  • Linting
  • Runners
  • Reporters
  • Results Processors
  • Environments
  • Coverage
  • Snapshot
  • Migration
  • Library extensions
  • Mocks
  • Watch Plugins
  • Processor
  • Presets
  • Generators
  • Debug
• Resources

Packages

Matchers

• jest-extended Adds additional matchers to core API making it easy to test everything.
• expect-more A huge library of test matchers for a range of common use-cases.
• jest-axe Jest matcher for axe for testing accessibility.
• jest-enzyme An assertion library for enzyme.
• jest-json-schema JSON schema matcher.
• expect-puppeteer Collection of matchers for Jest & Puppeteer.
• @testing-library/jest-dom Jest matchers to test the state of the DOM.
• jest-generator Jest matcher for testing generator function.
• jest-shell-matchers Test shell scripts while mocking specific commands.
• @emotion/jest Jest matcher for testing Emotion components.
• jest-openapi Jest matchers for asserting that HTTP responses satisfy an OpenAPI spec.
• jest-json Jest matchers to assert on JSON strings.
• @testing-library/jest-native Jest matchers to test the state of React Native.
• @traceloop/jest-opentelemetry Collection of matchers and runner for end to end tests with Jest & OpenTelemetry.

IDE

• vscode-jest Works out of the box Jest based testing in VS Code.
• vscode-jest-runner Simple way to run or debug one or more tests from context menu, codelens or command plalette.
• wallaby The pinnacle of the idea of a test runner integrated into an editor.
• coc-jest Jest plugin for coc.nvim.
• jester A Neovim plugin to easily run and debug Jest tests.

Linting

• eslint-plugin-jest ESLint plugin for Jest.
• eslint-plugin-jest-formatting ESLint plugin that aims to provide formatting rules (auto-fixable where possible) to ensure consistency and readability in jest test suites.
• eslint-plugin-jest-extended ESLint plugin for jest-extended.
• eslint-plugin-jest-dom ESLint plugin to follow best practices and anticipate common mistakes when writing tests with @testing-library/jest-dom.

Runners

• jest-runner-eslint ESLint runner for Jest.
• jest-runner-mocha Mocha runner for Jest.
• jest-runner-prettier Prettier runner for Jest.
• jest-electron-runner Electron runner for Jest.
• jest-runner-stylelint Stylelint runner for Jest.
• jest-runner-groups A runner that lets to group tests and to run groups separately.
• jest-runner-tsc A Jest runner for the TypeScript compiler.
• jest-runner-tsd Runner for running TypeScript type tests.
• jest-light-runner Runner that runs tests directly in bare Node.js, without virtualizing the environment.

Reporters

• jest-silent-reporter A silent reporter for Jest.
• jest-junit A JUnit format reporter for Jest which can integrate with CI systems.
• jest-xunit An xUnit format reporter for Jest.
• jest-skipped-reporter Report skipped tests in Jest.
• jest-html-reporter A Jest test results processor for generating a summary in HTML.
• jest-stare Configurable HTML reporter for filtering, side-by-side snapshot diffs, API, and simple CLI.
• jest-slow-test-reporter Prints the slowest tests in your codebase.
• jest-simple-dot-reporter A simple dot reporter - one dot per each test.
• jest-performance-reporter Identify slow tests and create a report including execution times.
• jest-progress-bar-reporter Simple reporter with a little progressbar.
• jest-html-reporters A Jest test results processor for generating a summary in HTML.
• jest-allure Add more power to your tests using Jest-Allure with very concise representation of what has been tested in a neat web report form.
• jest-standard-reporter Reporter that uses stdout for messages and stderr for errors.
• jest-github-reporter Report jest test errors directly in pull requests.
• jest-email-reporter Reporter for jest test errors by e-mail.
• jest-dashboard Command line dashboard.
• testrail-jest-reporter Report jest test results to TestRail.
• jest-tesults-reporter Submits test results data to Tesults for analysis and reporting.
• github-actions-jest-reporter Reports jest test results using Github Actions groups, allowing for an easy navigation of the test logs.
• jest-ado-reporter Reports jest test suite progress information to the pipeline step in Azure DevOps.
• jest-ci-spec-reporter Zero dependency spec reporter with CI-friendly output.
• jest-angular-test-verifier Ensures that essential Angular files have corresponding test files, reporting any missed opportunities and celebrating when all is well.
• jest-slow-test-highlighter Highlights and reports the slowest tests in your suite, helping you identify areas for performance optimization.
• jest-wip-reporter Classifies all tests as either passing, failing, or work-in-progress; also quiet progress reporting with dots by default.
• @tsdoc-test-reporter/jest A reporter that attaches JS/TSDoc comments to your test results and generates a summary in HTML or JSON.
• testomatio-jest-reporter Allows to analyze Jest autotests, collect test metadata and report them to the testomat.io TCM system.
• jest-console-group-reporter Automatically groups console messages, allows filtering, and provides flexible display configuration options.
• echoed Makes tests observable by reporting OpenTelemetry data.

Results Processors

• majestic Zero config UI for Jest.

Environments

• jest-environment-webdriver custom environment for WebDriver integration.
• jest-environment-puppeteer Puppeteer environment for Jest.
• jest-doctor Async leak detection and preventions.

Coverage

• jest-it-up Automatically bump up global thresholds whenever coverage goes above them.
• jest-coverage-thresholds-bumper Similar to jest-it-up, but allows to specify where coverage summary is located, supports Jest config in JSON files and package.json.
• jest-a-coverage-slip-detector Designed for parallelized CI, prevents test coverage from slipping. Features include per-file ratcheting, automatic coverage merging, and custom messages.

Snapshot

• snapshot-diff Takes two values, and return their difference as a string, ready to be snapshotted with toMatchSnapshot(). Especially helpful when testing the difference between different React component states.
• jest-snapshots-svg Take a React component tree, and render it into an SVG.
• jest-image-snapshot Take a snapshot test of an image buffer, and catch when the image changes over a threshold. Commonly used for visual regression testing.
• enzyme-to-json Convert Enzyme wrappers to a format compatible with Jest snapshot testing.
• jest-styled-components A set of utilities for testing Styled Components with Jest.
• jest-img-snapshot Image snapshot comparison using pixelmatch with all Jest's snapshot goodies out of the box.
• jest-file-snapshot Write snapshots to a separate file instead of the default snapshot file used by Jest.
• Differencify Visual regression testing tool using Jest and Puppeteer to do Image snapshot comparison.
• StoryShots StoryShots adds automatic Jest Snapshot Testing for Storybook.
• jest-large-snapshot-warning Add warnings to large snapshots.
• jest-serializer-react-helmet Include React Helmet data in component snapshots.
• jest-serializer-json-ld-script Serializes JSON+LD elements as JavaScript objects.
• @emotion/jest Include Emotion styles in component snapshots.
• jest-serializer-xml Format XML documents to better visualize in Snapshots.
• 1log Extensible logger that allows capturing log messages as snapshots.
• jest-serializer-ansi-escapes Snapshot serializer for ANSI escape sequences.

Migration

• jest-codemods Makes it easy to migrate from other test runner and frameworks to Jest.
• @putout/plugin-jest 🐊Putout plugin helps to migrate to latest Jest API.

Library extensions

• testdouble-jest Support for testdouble.js for users of Jest.
• jest-puppe-shots A Jest plugin for creating screenshots of React components with a little help of Puppeteer.
• babel-jest-assertions Babel plugin that automatically adds the number of assertions found in each test with expect.assertions(n) and expect.hasAssertions().
• typescript-snapshots-plugin Extends the TypeScript dev server to support hovering and jumping to a snapshot.
• jest-chain Chain Jest matchers together to create one powerful assertion.
• jest-expect-message Add custom message to Jest expects.
• @bigtest/interactor A testing and assertion library that makes it easy to test UIs at scale while keeping accessibility at the core.
• @testdeck/jest Decorator based wrapper around Jest for object oriented testing. Checkout the documentation and a working seed for you to start with.
• jest-plugin-must-assert A Jest plugin for strict runtime checks. Fails any tests without assertions and prevents async tasks (Promises & timeouts) from leaking across tests.
• wait-for-expect A await/async function to wait a expect. Useful on e2e test.
• jest-os-detection Dynamically enable or skip tests based on the OS they run on so you can share the same test suite across various platforms.
• @fast-check/jest Bring property based testing (aka fuzzing) into Jest.
• jest-fail-on-console Utility to fail a test when console.error() (or any other method of the console) gets called.

Mocks

• jest-fetch-mock Easily mock out fetch and set up responses, powered by Jest mock functions.
• jest-canvas-mock Mock canvas when run unit test cases with jest.
• jest-localstorage-mock A module to mock window.localStorage and window.sessionStorage in Jest.
• jest-date-mock Mock window.Date when run unit test cases with jest. Make tests of Date easier.
• jest-mock-extended Create Typesafe mocks for TS interfaces and objects as well as returning argument specific return values.
• jest-wake-lock-mock Mock Screen Wake Lock API navigator.wakeLock with ease and run your tests using Jest.
• jest-location-mock Mock window.location easily.
• @jest-mock/express Mock Express.js request and response objects.
• Suites Unit-testing framework for TypeScript backends with inversion of control and dependency injection that automatically generates type-safe mocks.

Watch plugins

• jest-watch-continue Run test in continue mode.
• jest-watch-directories Select directories to test.
• jest-watch-exec Execute scripts during the watch cycle.
• jest-watch-lerna-packages Select Lerna packages to test.
• jest-watch-master Check changes since master.
• jest-watch-random Randomly run some of the test suites.
• jest-watch-repeat Repeat test runs multiple times.
• jest-watch-select-projects Select which Jest projects to run.
• jest-watch-suspend Suspend watch mode so that your changes would not trigger test runs.
• jest-watch-toggle-config Toggle boolean settings (e.g. verbosity, test coverage).
• jest-watch-typeahead Filter your tests by file name or test name.
• jest-watch-yarn-workspaces Select Yarn workspaces to test.
• node-recorder Toggle recording modes for node-recorder.

Processor

• jest-nunjucks Processor that compiles nunjucks templates.
• ts-jest TypeScript preprocessor with sourcemap support.
• vue-jest Vue transformer with source map support.
• marko-jest Processor for Marko component.
• awesome-pug-jest Processor for Pug/Jade.
• jest-raw-loader Processor mimicking webpack's raw-loader.
• jest-less-loader Jest transformer for .less file.
• jest-url-loader Similar with webpack's url-loader for Jest transformer.

Presets

• jest-dynamodb Jest preset for working with DynamoDB.
• jest-mongodb Jest preset for working with MongoDB.
• jest-elasticsearch Jest preset for working with ElasticSearch.
• jest-puppeteer A Jest preset that enables a ready-to-use environment to write integration tests using Puppeteer.
• jest-preset-angular Jest preset for Angular projects.
• jest-preset-gatsby Jest preset to streamline unit testing a Gatsby project.
• jest-search Jest preset for working with customisable version of OpenSearch, ElasticSearch and ZincSearch.

Generators

• jest-test-gen CLI tool to generate a test file with test scaffold for every class method or function exported.
• text2jest A web-based tool to instantly convert a nested list of plain text test names into a Jest file.

Debug

• jest-preview Preview Jest tests in a browser.

Resources

• Jest cheat sheet.
• React Jest workshop.
• Jest: How Do I Mock X.

Contribute

Contributions welcome! Read the contribution guidelines.

License

MIT