Testing

12-month change compares the average of the last 4 weeks of downloads with the first 4 weeks of the 52-week series. Gzip size is for the whole package, as measured by Bundlephobia. "-" means the value has not been fetched.

• stubbya lightweight server for stubbing external systems and endpoints
• mock-envmorph process.env by adding/chaning/removing env vars for the lifetime of a callback
• auto-playwrightAutomate Playwright tests using ChatGPT.
• run-when-changedSelectively executes commands when watched files are changed.
• node-test-github-reporterA GitHub test reporter for the Node.js test runner
• jest-google-maps-mockJest mock for google maps
• cypress-autorecordIt simplifies mocking by auto-recording/stubbing HTTP interactions and automate the process of updating/deleting recordings.
• @mocky-balboa/serverServer library for Mocky Balboa to enable real-time network mocking for your server-side network requests in your browser based test suites via WebSockets.
• @web/test-runner-saucelabsSaucelabs launcher for Web Test Runner
• babel-plugin-import-remove-resource-queryRemove the resourceQuery param when importing modules via babel. Useful with Jest, that doesn't support resourceQueries
• a_mockSub package of a. Mocking framework
• mock-httpmock http request response
• inspect-loaderWebpack loader designed for loader testing and debugging. Calls a function with the received input.
• @mocky-balboa/clientClient library for Mocky Balboa to interact with the WebSocket server for real-time network mocking in your test suites.
• betterwrightA persistent, policy-guarded Playwright browser for AI agents with network controls, trusted credential filling, proof screenshots, and CAPTCHA helpers.
• @wonderland/walletlessVirtual EIP-1193 provider for E2E testing with Wagmi connector
• mock-require-lazyMock CommonJS require and native ESM import, together or separately, with lazy factories. A drop-in replacement for mock-require
• mock-gcsMock implementation of the Google Cloud Storage SDK.
• nothing-mockA chainable, callable mock object which always returns itself
• grunt-mochaGrunt task for running client-side Mocha specs in PhantomJS
• @stacksjs/testingThe Stacks way of testing.
• @mocky-balboa/playwrightPlaywright integration for Mocky Balboa. Mock your full-stack network requests directly inside your Playwright tests.
• @mbtest/mountebankOver the wire test doubles
• window-resizetoA window.resizeTo polyfill for test environments like Jest & JSDOM
• @stdlib/math-base-assert-is-probabilityTest if a double-precision floating-point number is a probability.
• lws-mock-responseMiddleware adding mock responses to lws
• @stacksjs/ts-fakerts-mocker is a performance-focused and lightweight faker/data mocking library for TypeScript.
• @stdlib/number-float64-base-assert-is-same-valueTest if two double-precision floating-point numbers are the same value.
• @cowasm/memfsIn-memory file-system with Node's fs API.
• @stdlib/ndarray-base-assert-is-struct-data-typeTest if an input value is a supported ndarray struct data type.
• ng-bulletAngular library which drastically improves execution time of your component's unit tests
• @mocky-balboa/next-jsNext.js integration for Mocky Balboa. Mock your full-stack network requests in your test suites.
• gulp-jestGulp plugin for running your Jest tests
• @layerzerolabs/hardhat-deployHardhat Plugin For Replicable Deployments And Tests
• @dramaorg/delectus-culpa-reprehenderit[![github actions][actions-image]][actions-url] [![coverage][codecov-image]][codecov-url] [![dependency status][deps-svg]][deps-url] [![dev dependency status][dev-deps-svg]][dev-deps-url] [![License][license-image]][license-url] [![Downloads][downloads-im
• nodemailer-mock-transportmock-mailer for putting tests around services that use node-mailer
• tap-minMinimal TAP output formatter.
• tunnelmoleTunnelmole, an open source ngrok alternative. Instant public URLs for any http/https based application. Available as a command line application or as an NPM dependency for your code. Stable and maintained. Good test coverage. Works behind firewalls
• grunt-simple-mochaA simple wrapper for running tests with Mocha.
• qunit-phantomjs-runnerA PhantomJS-powered headless test runner for QUnit
• w3walletsbrowser wallets for playwright
• @i18n-micro/test-utilsTesting helpers for Nuxt I18n Micro (translations, locales, formatting mocks).
• e2e-mailboxE2E test your email notification system using GuerrillaMail API.
• pgsql-testpgsql-test offers isolated, role-aware, and rollback-friendly PostgreSQL environments for integration tests — giving developers realistic test coverage without external state pollution
• gulp-mocha-phantomjsrun client-side Mocha tests with PhantomJS
• connect-prismRecord, mock, and proxy HTTP traffic.
• jest-mock-req-resJest mocks for Express Request and Response objects. Inspired by mock-req-res.
• ptaTest runner for nodejs using zora
• @stdlib/assert-is-same-valueTest if two arguments are the same value.
• react-native-accessibility-engineMake accessibility-related assertions on React Native code using React Test Renderer

• selenium-webdriver vs wd
• @appium/types vs selenium-webdriver
• msw vs json-server
• @copilotkit/aimock vs mock-socket
• @appium/types vs wd
• mockttp vs ts-mockito
• mock-socket vs ts-mockito
• rewire vs ng-mocks
• msw vs miragejs
• codeceptjs vs playwright-bdd
• codeceptjs vs nightwatch
• mocha vs jasmine-core
• mock-socket vs ng-mocks
• fast-check vs rewire
• ts-jest vs @golevelup/ts-jest