About xUnit.net

xUnit.net is a free, open source, community-focused unit testing tool for the .NET Framework. Written by the original inventor of NUnit v2, xUnit.net is the latest technology for unit testing C#, F#, VB.NET and other .NET languages. xUnit.net works with ReSharper, CodeRush, TestDriven.NET and Xamarin. It is part of the .NET Foundation, and operates under their code of conduct. It is licensed under Apache 2 (an OSI approved license).

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Discussions are held on our discussions site.
Resharper support is provided and supported by JetBrains.
CodeRush support is provided and supported by DevExpress.
NCrunch support is provided and supported by Remco Software.
The xUnit.net logo was designed by Nathan Young.

Table of Contents

Packages and Builds

Stable package Latest CI package Latest CI build
v2 core framework
v3 core framework (alpha docs) N/A
xunit.analyzers
xunit.runner.devices
xunit.runner.visualstudio

Documentation

Getting Started

New to xUnit.net? These guides will help you get started.

Configuration

Unit Test Parallelism

Other Topics

Frequently Asked Questions

Migration

Release Notes

Core Framework
VersionReleases
2.4.2 RTM Build 27 Build 12
2.4.1 RTM Build 4071 Build 4059
2.4 RTM RC 2 RC 1 Beta 2 Beta 1
2.3.1 RTM RC 2 RC 1
2.3 RTM RC 3 RC 2 RC 1 Beta 5 Beta 4 Beta 3 Beta 2 Beta 1
2.2 RTM Beta 4 Beta 3 Beta 2 Beta 1
2.1 RTM RC 2 RC 1 Beta 4 Beta 3 Beta 2 Beta 1
2.0.1 RTM RC 1
2.0 RTM RC 4 RC 3 RC 2 RC 1 Beta 5
Analyzers
VersionReleases
1.0.0 RTM
1.1.0 RTM

Test Runner Compatibility

  xUnit.net xunit.console MSBuild TestDriven.NET Visual Studio 2 Devices
Desktop Class Library 1.9.2+ 3a 3a 3a 3b (2012+)  
.NET Core
(Windows, Linux, OS X)
2.2+       3b (2017+)  
Universal Windows Platform 2.1+       3b (2015+) 3c
Xamarin MonoAndroid 1 2.0+         3c
Xamarin iOS Unified 1 2.0+         3c
  ↓ The project types below have been officially deprecated ↓
Universal Application
(Windows 8.1, Windows Phone 8.1)
2.0 - 2.1       3b (2013+) 3c
Windows Phone 8 (Silverlight) 2.0 - 2.1         3c
Xamarin MonoTouch (iOS Classic) 1 2.0 - 2.1         3c
  1. Requires Xamarin for Visual Studio or Xamarin Studio.
  2. Visual Studio support includes the Visual Studio Test Explorer, Visual Studio Code, vstest.console.exe,
    and dotnet test. Express editions of Visual Studio are not supported.
  3. Test runner source code availability:
    a. https://github.com/xunit/xunit
    b. https://github.com/xunit/visualstudio.xunit
    c. https://github.com/xunit/devices.xunit

Github Projects

For information on contributing to xUnit.net, please read the governance document.

Additional copyrights

Portions copyright The Legion Of The Bouncy Castle

Copyright © .NET Foundation. Contributions welcomed at https://github.com/xunit/xunit/tree/gh-pages.