Best Practice for Property-Based Testing

Property-based testing validates code by defining invariants that should always hold true, rather than testing specific examples. The approach involves identifying properties (like 'sorting produces non-decreasing order'), choosing a framework (Hypothesis for Python, QuickCheck for Haskell, jqwik for Java), and letting the tool generate hundreds of random test cases including edge cases. When tests fail, frameworks automatically shrink inputs to minimal counterexamples, making debugging easier. This method provides broader test coverage than traditional example-based unit testing.