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. Works with .NET Standard 2.0 and higher, .NET Framework 4.7 and higher and .NET 6 and higher.

See https://www.fluentassertions.com for background information, usage documentation, an extensibility guide, support information and more tips & tricks.

Originally authored by Dennis Doomen with Jonas Nyrup as the productive side-kick. Notable contributions were provided by Artur Krajewski, Lukas Grützmacher and David Omid.

Install Visual Studio 2022 17.8+ or JetBrains Rider 2021.3 as well as the Build Tools 2022 (including the Universal Windows Platform build tools). You will also need to have .NET Framework 4.7 SDK and .NET 8.0 SDK installed. Check global.json for the current minimum required version.

This is a special set of tests that use the Verify project to verify whether you've introduced any breaking changes in the public API of the library.

If you've verified the changes and decided they are valid, you can accept them using AcceptApiChanges.ps1 or AcceptApiChanges.sh. Alternatively, you can use the Verify Support plug-in to compare the changes and accept them right from inside Rider. See also the Contribution Guidelines.

With support from the following public sponsors