Panu Oksala • 10/27/2025

TUnit vs xUnit and NUnit: A New Take on C# Unit Testing

This article analyzes TUnit, a new .NET unit testing framework, comparing it to established options like xUnit and NUnit. It examines TUnit's key features such as parallel-by-default execution, compile-time generation, Native AOT support, and a simplified single [Test] attribute. The author discusses practical aspects like writing tests, the fluent assertion syntax, and unique features such as test dependencies via DependsOn, while also considering potential drawbacks like limited AI/LLM support compared to older frameworks.

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#unit testing #testing frameworks #c