JSPM

Delightful JavaScript Testing.

Delightful JavaScript Testing.

Delightful JavaScript Testing.

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

Accessibility engine for automated Web UI testing

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

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

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

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

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

Custom jest matchers to test the state of the DOM

Fire events the same way the user does

simple, flexible, fun test framework

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

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

JavaScript test spies, stubs and mocks.

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

SuperAgent driven library for testing HTTP servers

Fake XHR and server

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

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

the Istanbul command line interface

Property based testing framework for JavaScript (like QuickCheck)

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.

JavaScript Testing utilities for React

Additional Jest matchers

The official WebDriver JavaScript bindings from the Selenium project

Easy and powerful mocking of AWS SDK v3 Clients

The official JavaScript implementation of Cucumber.

Allure JS Commons

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

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

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

Jest preset configuration for Angular projects

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

Provides a method to inject and analyze web pages using axe

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

Mock http requests made using fetch

JavaScript Testing utilities for React

Various type declarations used across Appium

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

Appium Configuration Schema

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

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

JavaScript Testing utilities for React

A client for working with the BrowserStack APIs.

WebDriverJS adapter for Jasmine2.

Mock implementation of the Next.js Router

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

Testing module for Pinia

convert enzyme wrapper to a format compatible with Jest snapshot

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

Command-line companion utility for Postman

A Test-Anything-Protocol library for JavaScript

Support libs used across Appium packages

strings comparison matchers for chai

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

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

Allure Playwright integration

Nodejs bindings for BrowserStack Local

Base driver class for Appium drivers

JavaScript Testing utilities for React

HeartBeat

Reusable utilities to help level up NestJS Testing

A Universal Logger For The Appium Ecosystem

Applitools universal framework wrapper

Shared TypeScript Config for Appium

Applitools universal screenshoter for web and native applications

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

time utils

Custom Jest matchers for AWS SDK v3 Client mock

Automation for Apps.

Documentation generation utilities for Appium and related projects

A Karma plugin. Launcher for Firefox.

JavaScript Testing utilities for React

Simulate react-select events for react-testing-library

PostgreSQL module for Testcontainers

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

The base plugin used to create Appium plugins

Storybook Vitest addon: Blazing fast component testing using stories

Power Assert feature enhancer for assert function/object

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

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

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

Android UiAutomator and Chrome support for Appium

Temporal.io SDK Testing sub-package

Tools to support code coverage in Storybook

<!-- markdownlint-disable MD024 -->

Flush promises in tests

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

The Karma command line interface.

The powerful, easy-to-use testing framework.

Test Redux Saga with an easy plan

A set of tools for emulating browser behavior in jsdom environment

Run gherkin-syntaxed specs with cypress.io

Render React components in Vitest Browser Mode

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

Persistent storage for Appium extensions

Redis module for Testcontainers

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

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

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

Mock HTTP server for testing HTTP clients and stubbing webservices

Chai plugin for JSON Schema v4

Integrate Vitest with Storybook

A lightweight Jest mock for unit testing Express

Check if a process is running

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

Automated browser testing for the modern web development stack.

Pact for all things Javascript

Marble testing helpers for RxJS and Jasmine

Elastic synthetic monitoring agent

Supercharged End 2 End Testing Framework for NodeJS

Fake data generator

Chai assertion that provides Jest's snapshot testing

Power Assert in JavaScript

Power Assert output formatter

AngularJS mocks for testing

Power Assert feature enhancer for assert function/object

Skip the rest of Cypress tests on first failure

Cypress test reporter for CircleCI

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

REST API Testing Tool for all levels in a Test Pyramid

Test React components using Cypress

Show some ❤️ to process errors

Babel plugin for power-assert

LocalStack module for Testcontainers

Testing Matchers for Enzyme

Preview your Jest tests in a browser

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

Visual regression testing tool with cypress

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

Hardhat utils for testing

Runtime Environment for enzyme tests in jest

Validates a deep structured JSON pattern

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

A Test-Anything-Protocol library for JavaScript

date / time comparison matchers for chai

React Apollo testing utilities.

WebDriver/Selenium 2 node.js client

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

Simplifying the use of mocks with Node.js

Generate fast-check arbitraries from Zod schemas.

Hardhat utils for testing

The api for the extendable JavaScript mutation testing framework Stryker

The extendable JavaScript mutation testing framework

mock stdout and stderr

High Level DOM Assertions for QUnit

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

Property based testing for Jest based on fast-check

Nodejs bindings for LambdaTest Tunnel

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

BDD Testing with Playwright runner

Ignore imported style files when running in Node

Applitools Eyes SDK for Playwright

An NSubstitute port to TypeScript called substitute.js.

a simple chai plugin for better array assertions

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

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

Library to help unit testing when using apollo-client

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

Filter out unwanted `console.log()` output

Convert assert to power-assert on ESTree AST

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

Official Cypress schematic for the Angular CLI

Power Assert feature instrumentor based on the ECMAScript AST

Spies for the Chai assertion library.

DOM assertions for the Chai assertion library using vanilla JavaScript

Mock axios requests for testing

Check if a value is an `Error` instance

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

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

Testing Helpers following open-wc recommendations

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

Power Assert feature instrumentor on the fly

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

A library to download and launch Sauce Connect.

Testing following open-wc recommendations

Mocha tests in Electron.

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

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

Use custom tags to slice up Cypress test runs.

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

MySQL module for Testcontainers

Node.js SDK for visual testing with Argos.

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

Calibre - Page speed performance testing with Google Lighthouse

Extends Chai with lint-friendly terminating assertions.


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

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

UI for testing API in Cypress

Capture and assert HTTP ajax calls in webdriver.io 🕸

A11y tests for chai

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

Shallow deep equal assertion for chai

Marble testing helpers library for RxJs and Jest

Allure Cucumber.JS integration

An RxJS marble testing library for any test framework

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

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

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

Playwright SDK for visual testing with Argos.

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

Hardhat Plugin For Replicable Deployments And Tests

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

Applitools Eyes SDK for Puppeteer

Provides 'specflow' like bindings for CucumberJS 7.0.0+ in TypeScript 1.7+.

Kafka module for Testcontainers

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

Runs Mocha unit tests but randomizes their order

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

Generate test data for your tests easily.

Chai.js assertions for enzyme

the open source API testing client

Provides a method to inject and analyze web pages using axe

fail cypress test on console error

Run Mocha tests

Allure Vitest integration

Jest utility for creating variations of the same test

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.

Visual Regression Testing for Storybook

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

NATS module for Testcontainers

Custom Jasmine matchers for testing DOM elements

Allure Jest integration

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

A simple mocking library for TypeScript

file system assertions for chai

puppeteer + dom-testing-library

Applitools Eyes SDK for TestCafe

Temporal.io SDK code coverage integration

Test your time critical app by overriding the native Javascript Date function

Asynchronous BDD & continuous integration for node.js

Common code for jest-openapi and Chai OpenAPI Response Validator

A library of utilities for testing with the ngx-translate i18n Angular library

tRPC API for Mock Service Worker (MSW).

A mock provider for your blockchain testing needs.

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