testing/property-testing

Property-based testing automatically generates diverse inputs to verify that defined invariants always hold true, uncovering hidden bugs and edge cases beyond manually crafted examples.

Test data transformations by defining invariant properties that should always hold true, allowing generative testing libraries to synthesize diverse inputs and automatically assert these rules.

Yes, you can use fast-check to verify invariants in pure functions by automatically generating varied inputs and asserting that your defined properties remain valid across all generated cases.

Property-based testing works for algorithms without predefined test cases by automatically synthesizing diverse inputs to check that invariant properties remain true, rather than relying on specific manual examples.

Generative testing is not suitable when invariants cannot be clearly defined for pure functions, data transformations, or algorithms, as the methodology requires strict properties to assert against generated inputs.