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A very extensive set of extension methods that allow you to more naturally specify the expected outcome of a TDD or BDD-style unit tests. Targets .NET Framework 4.7, as well as .NET Core 2.1, .NET Core 3.0, .NET 6, .NET Standard 2.0 and 2.1. Supports the unit test frameworks MSTest2, NUnit3, XUnit2, MSpec, and NSpec3.
A test fixtures replacement for Python
Catch API bugs before your users do
Fortio load testing library, command line tool, advanced echo server and web UI in go (golang). Allows to specify a set query-per-second load and record latency histograms and other useful stats.
JSLint, The JavaScript Code Quality and Coverage Tool
The Enterprise-ready testing and specification framework.
Simple one-liner tests for common Rails functionality
AutoFixture is an open source library for .NET designed to minimize the 'Arrange' phase of your unit tests in order to maximize maintainability. Its primary goal is to allow developers to focus on what is being tested rather than how to setup the test scenario, by making it easier to create object graphs containing test data.
Ruby: 2 CPUs = 2x Testing Speed for RSpec, Test::Unit and Cucumber
Verify is a snapshot testing tool that simplifies the assertion of complex data models and documents.
QA Wolf from anywhere — your terminal, your CI, your AI agent.
JSON-Schema + fake data generators
GoMock is a mocking framework for the Go programming language.
The code coverage tool for Python
Should testing for .NET—the way assertions should be!
A gem providing "time travel", "time freezing", and "time acceleration" capabilities, making it simple to test time-dependent code. It provides a unified method to mock Time.now, Date.today, and DateTime.now in a single call.
minitest provides a complete suite of testing facilities supporting TDD, BDD, and benchmarking.
Security oriented software fuzzer. Supports evolutionary, feedback-driven fuzzing based on code coverage (SW and HW based)
Pester is the ubiquitous test and mock framework for PowerShell.
Simple gRPC benchmarking and load testing tool
Papercut SMTP -- The Simple Desktop Email Server
Mutation testing for JavaScript and friends
Official repository for WebPageTest
Bluepill is a reliable iOS testing tool that runs UI tests using multiple simulators on a single machine