fast-check
https://github.com/dubzzz/fast-check
TypeScript
Property based testing framework for JavaScript (like QuickCheck) written in TypeScript
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- Issues
- 📝 Add migration guide from v4 to v5
- stringMatching: octal and \cX escapes produce non-matching strings; [\b], [\d-z] and (?:) throw
- ✨ Expose current run paths to plugins
- ⚡️ Improve initialization/memory performance of binary string
- Raise the minimum supported Node.js version in code and documentation
- ♻️ Rely on modern plugins' APIs for `interruptAfterTimeLimit`
- ✨(codemod) Add v5/asyncProperty migration
- Performance: `string({ unit: 'binary' })` costs ~half a second in initialization
- Handle plugin factory failures in assert
- 📝 Make testing skill propose properties across test layers
- Docs
- TypeScript not yet supported