JSPM

Delightful JavaScript Testing.

BDD/TDD assertion library for node.js and the browser. Test framework agnostic.

Delightful JavaScript Testing.

Improved deep equality testing for Node.js and the browser.

Delightful JavaScript Testing.

Simple and complete DOM testing utilities that encourage good testing practices.

Simple and complete React DOM testing utilities that encourage good testing practices.

Accessibility engine for automated Web UI testing

In-memory file-system with Node's fs API.

Custom jest matchers to test the state of the DOM

Fire events the same way the user does

A Jest transformer with source map support that lets you use Jest to test projects written in TypeScript

[](https://github.com/mmkal/expect-type/actions/workflows/ci.yml)  [![X (formerly Twitter) Follow](https://img.shields.io/twitte

simple, flexible, fun test framework

Low-level HTTP/HTTPS/XHR/fetch request interception library.

Seamless REST/GraphQL API mocking library for browser and Node.js.

JavaScript test spies, stubs and mocks.

SuperAgent driven library for testing HTTP servers

Cypress is a next generation front end testing tool built for the modern web

Fake XHR and server

ESLint plugin to follow best practices and anticipate common mistakes when writing tests with Testing Library

Property based testing framework for JavaScript (like QuickCheck)

the Istanbul command line interface

Simple JavaScript testing framework for browsers and node.js

Simple and complete React hooks testing utilities that encourage good testing practices.

Spectacular Test Runner for JavaScript.

Adaptation of react-addons-shallow-compare, for independent usage

Extends Chai with assertions about promises.

Testcontainers is a NodeJS library that supports tests, providing lightweight, throwaway instances of common databases, Selenium web browsers, or anything else that can run in a Docker container

JavaScript Testing utilities for React

Additional Jest matchers

The official JavaScript implementation of Cucumber.

The official WebDriver JavaScript bindings from the Selenium project

Easy and powerful mocking of AWS SDK v3 Clients

CLI for Jasmine, a simple JavaScript testing framework for browsers and Node

Allure JS Commons

Provides a method to inject and analyze web pages using axe

Mock 'http' objects for testing Express, Next.js and Koa routing functions

Simple and complete custom Cypress commands and utilities that encourage good testing practices.

Jest preset configuration for Angular projects

Appium Configuration Schema

use querySelector syntax to search for nodes inside of (nested) shadow roots

Various type declarations used across Appium

Extends Chai with assertions for the Sinon.JS mocking framework.

Mock http requests made using fetch

convert enzyme wrapper to a format compatible with Jest snapshot

Wait for expectation to be true, useful for integration and end to end testing

A plugin which adds additional commands to selenium's javascript implementation of the webdriver client side API

JavaScript Testing utilities for React

JavaScript Testing utilities for React

strings comparison matchers for chai

Testing module for Pinia

WebDriverJS adapter for Jasmine2.

Node.js test runner that lets you develop with confidence.

A client for working with the BrowserStack APIs.

Support libs used across Appium packages

Mock implementation of the Next.js Router

A selenium server and browser driver manager for your end to end tests.

Base driver class for Appium drivers

Storybook Vitest addon: Blazing fast component testing using stories

Command-line companion utility for Postman

WebDriver Proxy for testing rich clients. It block certain calls until Angular is done updating the page under test.

HeartBeat

An Angular testing library for creating mock services, components, directives, pipes and modules in unit tests. It provides shallow rendering, precise stubs to fake child dependencies. ng-mocks works with Angular 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

A Test-Anything-Protocol library for JavaScript

A Universal Logger For The Appium Ecosystem

Allure Playwright integration

Nodejs bindings for BrowserStack Local

time utils

PostgreSQL module for Testcontainers

Shared TypeScript Config for Appium

Applitools universal framework wrapper

Custom Jest matchers for AWS SDK v3 Client mock

Applitools universal screenshoter for web and native applications

Android UiAutomator and Chrome support for Appium

A Karma plugin. Launcher for Firefox.

Parsing string to array of args like node on bash do.

Documentation generation utilities for Appium and related projects

A superset of the JSDOM environment for Jest that respects Node.js globals.

JavaScript Testing utilities for React

Automation for Apps.

Given an object and a property, replaces a property descriptor (or deletes it), and returns a thunk to restore it.

A library for setting up JavaScript factories to help build objects as test data, with full TypeScript support

Reusable utilities to help level up NestJS Testing

The base plugin used to create Appium plugins

Simulate react-select events for react-testing-library

JavaScript Testing utilities for React

Power Assert feature enhancer for assert function/object

Temporal.io SDK Testing sub-package

Tools to support code coverage in Storybook

Persistent storage for Appium extensions

Test Redux Saga with an easy plan

Redis module for Testcontainers

A port of Node v6's internal _deepEqual function in a universal style

A client-side server to help you build, test and demo your JavaScript app

Mock HTTP server for testing HTTP clients and stubbing webservices

The Karma command line interface.

<!-- markdownlint-disable MD024 -->

The powerful, easy-to-use testing framework.

Flush promises in tests

Render React components in Vitest Browser Mode

Simple and complete Svelte testing utilities that encourage good testing practices.

The Mailosaur Node library lets you integrate email and SMS testing into your continuous integration process.

Run gherkin-syntaxed specs with cypress.io

Power Assert in JavaScript

Chai assertion that provides Jest's snapshot testing

Pact for all things Javascript

An unofficial React 18 adapter for Enzyme, that you probably shouldn't use.

A lightweight Jest mock for unit testing Express

Marble testing helpers for RxJS and Jasmine

A set of tools for emulating browser behavior in jsdom environment

Power Assert output formatter

Supercharged End 2 End Testing Framework for NodeJS

Check if a process is running

Power Assert feature enhancer for assert function/object

Test'em 'scripts! Javascript Unit testing made easy.

Extends Cypress' cy commands with localStorage methods. Allows preserving localStorage between tests

Integrate Vitest with Storybook

AngularJS mocks for testing

Chai plugin for JSON Schema v4

LocalStack module for Testcontainers

A function to test for identical deep equality (based on lodash's isEqual).

Automated browser testing for the modern web development stack.

Fake data generator

Validates a deep structured JSON pattern

REST API Testing Tool for all levels in a Test Pyramid

Hardhat utils for testing

Babel plugin for power-assert

A flexible plugin that drives your tests with human-written commands, enhanced by the power of large language models (LLMs)

Preview your Jest tests in a browser

Show some ❤️ to process errors

The extendable JavaScript mutation testing framework

Power Assert instrumentor from source to source, with source-map

Hardhat utils for testing

The api for the extendable JavaScript mutation testing framework Stryker

Runtime Environment for enzyme tests in jest

Simplifying the use of mocks with Node.js

A Test-Anything-Protocol library for JavaScript

date / time comparison matchers for chai

Skip the rest of Cypress tests on first failure

Testing Matchers for Enzyme

Cypress test reporter for CircleCI

Test React components using Cypress

WebDriver/Selenium 2 node.js client

Jest runner for Angular build facade. Allows ng test run with Jest instead of Karma

Property based testing for Jest based on fast-check

Nodejs bindings for LambdaTest Tunnel

Utility to make vitest tests fail when console.error() or console.warn() are used

mock stdout and stderr

Power Assert feature instrumentor based on the ECMAScript AST

a simple chai plugin for better array assertions

Easy to use Node.js based end-to-end testing solution for web applications using the W3C WebDriver API.

Convert assert to power-assert on ESTree AST

Compliance tests for textlint's AST(Abstract Syntax Tree).

Zero-dependency (req,res) handler callback agent for use in client requests

Power Assert feature instrumentor on the fly

DOM assertions for the Chai assertion library using vanilla JavaScript

Extends Chai with an assertion for deeply matching objects (i.e. subset equality checking)

High Level DOM Assertions for QUnit

NATS module for Testcontainers

Applitools Eyes SDK for Playwright

BDD Testing with Playwright runner

React Apollo testing utilities.

To compare dom and shadow dom trees. Part of open-wc recommendations

Filter out unwanted `console.log()` output

A library to download and launch Sauce Connect.

Spies for the Chai assertion library.

Ignore imported style files when running in Node

Mock axios requests for testing

Visual regression testing tool with cypress

Check if a value is an `Error` instance

Extends Cypress' cy commands that let you integrate email and SMS testing into your continuous integration process.

Mocha tests in Electron.

Elastic synthetic monitoring agent

Testing Helpers following open-wc recommendations

Shared resources of db-migrate for drivers and also used internally.

Runs Mocha unit tests but randomizes their order

A forked of Chai 5 which adds Promise support in order to work with Nightwatch commands.

SMTP Server and Web Interface for reading and testing emails during development

Extends Chai with lint-friendly terminating assertions.

Official Cypress schematic for the Angular CLI

Use custom tags to slice up Cypress test runs.

Library to help unit testing when using apollo-client

file system assertions for chai

Testing following open-wc recommendations

A tool to mock a JWKS for development of microservices who consume jwts signed with RSA

Utilities to help you create E2E test suites for apps using Clerk

Calibre - Page speed performance testing with Google Lighthouse

An RxJS marble testing library for any test framework

Utility library emit test data through @wire adapters in Lightning web component tests

Stub behaviors of Vitest mock functions with a small, readable API.

the open source API testing client

With Bruno CLI, you can now run your API collections with ease using simple command line commands.

MySQL module for Testcontainers


Node.js SDK for visual testing with Argos.

A Storybook addon, Save the screenshot image of your stories! via puppeteer.

Simple and complete Preact DOM testing utilities that encourage good testing practices.

An implementation of https://github.com/emberjs/rfcs/pull/726

Knapsack Pro Core library splits tests across CI nodes and makes sure that tests will run in optimal time on each CI node. This library gives core features like communication with KnapsackPro.com API. This library is a dependency for other projects specif

Applitools Eyes SDK for Puppeteer

Parse test results from JUnit, TestNG, xUnit, cucumber and many more

Marble testing helpers library for RxJs and Jest

Playwright SDK for visual testing with Argos.

Shallow deep equal assertion for chai

Generate test data for your tests easily.

A standalone utility to manage Xvfb (X Virtual Framebuffer) for headless testing

A11y tests for chai

An NSubstitute port to TypeScript called substitute.js.

Visual Regression Testing for Storybook

Run Mocha tests

a library of conditions that are useful for end-to-end tests

UI for testing API in Cypress

Hardhat Plugin For Replicable Deployments And Tests

Chai.js assertions for enzyme

Asynchronous BDD & continuous integration for node.js

An extension of DOM-testing-library to provide hooks into the shadow dom

Provides a method to inject and analyze web pages using axe

Allure Vitest integration

Capture and assert HTTP ajax calls in webdriver.io 🕸

The Cypress plugin for generating HTTP Archive (HAR) files is a tool that allows developers and QA engineers to capture detailed information about network requests made during the execution of Cypress tests.

A HTML reporting module for Cypress-Image-Diff to parse the JSON output to a beautiful report

puppeteer + dom-testing-library

Confidently unit and integration test your Next.js API routes/handlers in an isolated Next.js-like environment

Kafka module for Testcontainers

An ember-cli addon to test against multiple dependencies, such as ember and ember-data.

fail cypress test on console error

Generate fast-check arbitraries from Zod schemas.

LambdaTest Rest Client for Node.js

A mock provider for your blockchain testing needs.

Common code for jest-openapi and Chai OpenAPI Response Validator

An in-memory implementation of webextension-polyfill for testing. Supports all test frameworks (Vitest, Jest, etc)

A client-side server to help you build, test and demo your Ember app

Tooling for testing Inngest functions.

E2E mobile app testing done right, with the Playwright test runner

Visual Debugging Experience for Vitest 🧪🖼⚡️

JavaScript "deep equality" / structural equality tester with Node.js flavor.

Temporal.io SDK code coverage integration

Allure Cucumber.JS integration

A testing utility for nest-commander. It builds on top of ideas from @nestjs/testing and is not tied to any test framework directly.

jest wrapper for fetch-mock

A simple mocking library for TypeScript

Vitest wrapper for fetch-mock