Open-source alternatives to Pytest Asyncio

Bogus is a fake data generator for .NET applications, including C#, F#, and VB.NET. It provides a deterministic mock data engine and an object configuration mapper to produce realistic profiles, addresses, and financial records. The library differentiates itself through a localization data provider that generates region-specific identifiers across various international languages and locales. It ensures reproducibility across executions by using seed values to control the sequence of generated data. The project covers wide-ranging data synthesis capabilities, including the generation of netwo

Cypress is a browser-based testing framework designed for writing and running automated tests directly inside the browser. It serves as an end-to-end testing framework, a frontend component testing tool, and a web application test runner. The project also functions as a headless browser automation tool and a network traffic interceptor. The system differentiates itself by executing test code within the same browser process as the application, allowing for direct access to the DOM. It includes a network traffic interception system to stub and manipulate browser requests, as well as a graphical

Machine.Specifications is a Context/Specification framework for .NET that removes language noise and simplifies tests.

Should testing for .NET—the way assertions should be!

xunit is a unit testing framework for the .NET ecosystem designed to execute isolated code units and report failures across multiple platforms. It functions as a data-driven test runner and a native AOT test suite, capable of verifying compiled binaries and standalone executables after ahead-of-time compilation. The framework utilizes build-time source generators for test discovery to define test cases without relying on runtime reflection. It also features an extensible reporting system where custom logic can be linked into test assemblies to output results in specialized formats. The proje

FluentAssertions is a library of extension methods for .NET that provides a human-readable syntax for verifying expectations in unit tests. It serves as a validation layer that integrates with MSTest, NUnit, and xUnit to throw framework-specific exceptions upon assertion failure. The project includes a structural equivalency engine that performs deep member-by-member validation of .NET objects using configurable matching rules. It is designed for test-driven and behavior-driven development by generating descriptive failure messages that explain the difference between actual and expected resul

blanket.js is a simple code coverage library for javascript. Designed to be easy to install and use, for both browser and nodejs.

Chaos testing, network emulation, and stress testing tool for containers

Common tasks for Erlang projects that use Mix

A collection of useful micro-modules for Lua.

PowerShell module to run a Selenium WebDriver.

Rust-based framework to Fuzz Solana programs, designed to help you ship secure code.

jest-image-snapshot is a Node.js image testing library and visual comparison engine designed for visual regression testing within Jest. It provides a custom matcher to compare current images against baseline snapshots to identify pixel differences. The tool generates image diffs that highlight specific divergences between baseline and received snapshots. It includes mechanisms to update baseline images when changes are approved and allows for sensitivity tuning via pixel count, percentage thresholds, or blur to ignore noise. The library covers image snapshot management, including custom stor

airspeed velocity

Testing Framework for Rust

Protractor is a WebDriver-based end-to-end testing framework and browser automation tool. It serves as a frontend integration test suite used to verify web application flows by simulating user behavior and executing JavaScript within a browser. The framework is specifically designed for testing Angular applications, providing specialized locators and synchronization tools that align with the framework lifecycle. It distinguishes itself through automatic test step synchronization, which pauses execution until pending page tasks are completed to ensure stable browser execution. The tool covers

Random testing library for C#

Elixir Behaviour Driven Development

Download the latest release (or clone) the repository and build Kovacs with:

Apache JMeter is a Java-based performance testing tool and multi-protocol traffic simulator used to analyze the stability and scalability of servers and networks. It functions as a distributed load testing framework that coordinates remote worker nodes from a single controller to generate high volumes of concurrent traffic. The project is distinguished by its ability to simulate traffic across diverse backend systems, including HTTP, JDBC, LDAP, JMS, FTP, and TCP. It provides a headless command-line interface for automated execution and a reporting system that transforms raw sample logs into

★ Online documentation ★

The XCTest Project, A Swift core library for providing unit test support

OHHTTPStubs is an HTTP network mocking library and request interceptor used to simulate server responses for testing application behavior without a live backend. It functions as a network request stubbing tool that captures outgoing network calls and replaces them with predefined mock data, custom status codes, and headers. The library distinguishes itself through its ability to simulate a wide range of network conditions, including artificial latency and connection failures. It supports dynamic response sequencing, allowing the tool to return a series of different responses for the same requ