Property Testing for Bupkis Plugins

This skill covers writing property-based tests for bupkis assertion plugins (like @bupkis/events or @bupkis/sinon) using @bupkis/property-testing and fast-check.

The Spirit of Property Testing

The whole point of property testing is to exercise code with a wide variety of randomly generated inputs. Every test config should have actual stochastic behavior - if a test just runs the same hardcoded values 50 times, you've missed the plot entirely.

The Anti-Pattern: fc.constant(null).chain(...)

This pattern is a red flag that indicates zero randomness: