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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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


Getting Started

Frequently Asked Questions


Release Notes



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Test Runner Compatibility

  xUnit.net Console MSBuild TestDriven.NET Visual Studio 2 Resharper Devices
Desktop Class Library 1.9.2+ 3a 3a 3a 3b (2012+)  
Portable Class Library 2.0+ 3a 3a 3a   3c
.NET Core
(Windows, Linux, OS X)
2.2+ 3b     3b (2017+)    
.NET Standard Class Library 1.1+ 2.2+ 3a 3a 3a     3c
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
Note: A GUI runner ships with xUnit.net 1.9.2, but is no longer supported.
1 Requires Xamarin for Visual Studio or Xamarin Studio
2 Visual Studio support requires Visual Studio Community, or a paid-for version of Visual Studio (Express editions 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

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Copyright © 2017 .NET Foundation. Contributions welcomed at https://github.com/xunit/xunit.github.io.