nw-pbt-haskell

You can automate property-based testing workflows for Haskell code using QuickCheck and Hedgehog to verify invariants. This Skill guides property generation and shrinking for tasks ranging from pure functions to stateful systems.

The best way to test stateful systems in Haskell with randomized inputs is using Hedgehog for advanced stateful testing and integrated shrinking. This allows you to explore edge cases in impure code effectively.

Yes, property-based testing in Haskell works with both QuickCheck and Hedgehog. This Skill offers integration guidance for both frameworks to help you select the appropriate tool for your verification tasks.

To start writing a simple Haskell property test, assert a basic identity such as reversing a list twice yields the original list. This establishes a baseline for property generation before exploring more complex invariants.

You should use property-based testing instead of ad-hoc tests to systematically uncover Haskell invariants and reduce reliance on fragile test suites. Randomized inputs and shrinking automatically find edge cases that manual tests miss.