XUnit.net

This article is about the xUnit.net software. For all unit-testing frameworks like '_Unit', see xUnit.

xUnit.net is a free and open-source unit testing tool for the .NET Framework, written by the original author of NUnit. The software can also be used with .NET Core and ^[2] Mono.

xUnit.net

xUnit.net 1.9.1 GUI on Windows
Original author(s)	James Newkirk, Brad Wilson
Developer(s)	Microsoft, Outercurve Foundation, .NET Foundation
Stable release	2.6.2[1] / November 18, 2023; 17 months ago (2023-11-18)
Repository	github.com/xunit/xunit/
Written in	C#
Operating system	Windows, macOS, Linux
Platform	.NET Framework, .NET Core, Mono
Type	Unit testing tool
License	Apache License 2.0
Website	xunit.net

It is licensed under Apache License 2.0, and the source code is available on GitHub.^[3] xUnit.net works with Xamarin, ReSharper, CodeRush, and TestDriven.NET.^[4] It is authored by James Newkirk and Brad Wilson.^[5]

Example

Example of an xUnit.net test fixture:

using Xunit;

public class MyTests
{
    [Fact]
    public void MyTest()
    {
        Assert.Equal(4, 2 + 2);
    }
}

After you compile the test, run it in your console:

C:\MyTests\bin\Debug>xunit.console MyTestLibrary.dll
xUnit.net console test runner (64-bit .NET 2.0.50727.0)
Copyright (C) 2007-11 Microsoft Corporation.

xunit.dll:     Version 1.9.1.0
Test assembly: C:\MyTests\bin\Debug\MyTestLibrary.dll

1 total, 0 failed, 0 skipped, took 0.302 seconds

See also

• Free and open-source software portal

• Test automation
• List of unit testing frameworks for .NET programming languages (includes column indicating which are based on xUnit)
• JUnit