xUnit.net is a developer testing framework, built to support Test Driven Development, with a design goal of extreme simplicity and alignment with framework features. Installing this package provides code analyzers to help developers find and fix frequent issues when writing tests and xUnit.net extensibility code.
$ dotnet add package xunit.analyzersThis project contains source code analysis and cleanup rules for xUnit.net.
Requirements: xUnit.net v2.0+ and Visual Studio 2022 or later (early versions of Visual Studio may work but are not officially supported).
Documentation: a list of supported rules is available at https://xunit.net/xunit.analyzers/rules/
Bugs and issues: please visit the core xUnit.net project issue tracker.
Building: see BUILDING.md.
xUnit.net 2.3.0 and higher: the analyzer package is referenced by the main xunit NuGet package out of the box. If you choose to reference xunit.core instead, you can reference xunit.analyzers explicitly.
xUnit.net 2.2.0 and earlier: you have to install the xunit.analyzers NuGet package explicitly.
If you installed xUnit.net 2.3.0 or higher and do not wish to use the analyzers package, replace the package reference to xunit with the corresponding versions of xunit.core and xunit.assert

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).