Awesome Jest

An awesome list of Jest packages and 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.

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.
@automock/jest Class dependencies auto-mocking.
@jest-mock/express Mock Express.js request and response objects.

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

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