TUnit

TUnit

A modern .NET testing framework. Tests are source-generated at compile time, run in parallel by default, and support Native AOT — all built on Microsoft.Testing.Platform.

Features

• Compile-time test discovery — tests are generated at build time rather than discovered via reflection at runtime, which means faster startup and better IDE integration
• Parallel by default — tests run concurrently; use [DependsOn] to express ordering and [ParallelLimiter] to cap concurrency
• Data-driven testing — [Arguments], [Matrix], [ClassData], and custom DataSourceGenerator<T> sources
• Async assertions with detailed failure messages
• Built-in Roslyn analyzers — catch mistakes at compile time, such as missing async, incorrect method signatures, and invalid attribute combinations
• Extensible — write your own skip conditions, retry logic, and attributes
• Native AOT & trimming support
• Lifecycle hooks — [Before] / [After] at method, class, assembly, or test session scope

Getting Started

Using the Project Template (Recommended)