what is hallstatt fr?

Hallstatt is a testing framework for C# that takes a different approach to writing tests. Instead of the traditional pattern where tests are defined as methods inside classes with special annotations, it lets you write tests as simple, standalone functions. The result is more concise test code that feels closer to how testing works in languages like JavaScript. In practice, you write a test by calling a function with a name and a small block of code that performs the check. The framework handles registering and running those tests through the standard .NET test tools, so the workflow stays familiar. It also supports parameterized tests, where you can run the same test logic against multiple sets of inputs, and you can tag tests with metadata or skip them conditionally. The built-in assertion tools are intentionally minimal, so the README recommends pairing it with a more full-featured assertion library for real projects. This would appeal to C# developers who find the conventional class-and-attribute testing style verbose or restrictive, and who prefer the lighter, more flexible approach common in other ecosystems. For example, a team that wants to generate test cases dynamically or compose them like regular functions would find this model more natural than wrangling class hierarchies. One important caveat: the project is explicitly marked as suspended and experimental, not recommended for production use. The author is waiting on a C# language feature proposal to move forward, so anyone considering it should understand it is not actively developed right now.