property-based-testing

Generate property-based tests for invariants and roundtrips across programming languages.

Updated Feb 24, 2026
One-click install
npx skills add https://github.com/ofelixdev/cc-kit --skill property-based-testing-ofelixdev
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: property-based-testing
Source: https://github.com/ofelixdev/cc-kit/tree/main/template/skills/property-based-testing
Command: npx skills add https://github.com/ofelixdev/cc-kit --skill property-based-testing-ofelixdev

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

This Skill helps developers write more robust and comprehensive tests by leveraging property-based testing (PBT), which focuses on verifying general properties of code rather than just specific examples.

Core Features & Use Cases

  • Generate Property-Based Tests: Create tests that check for invariants, roundtrips, and other properties across various languages.
  • Review Existing PBT: Analyze current tests for quality, identify weaknesses, and suggest improvements.
  • Design with Properties: Guide the development process by defining specifications as executable properties before implementation.
  • Use Case: When developing a new serialization library, use this Skill to generate property-based tests that ensure any data encoded can be correctly decoded, and that certain invariants about the data structure are maintained.

Quick Start

Use the property-based-testing skill to generate property-based tests for the provided Python serialization code.

Frequently Asked Questions about property-based-testing

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
What is property-based testing and how does it verify code invariants?

Property-based testing verifies general properties and invariants of code rather than specific examples. It automatically generates many test cases to ensure executable specifications hold true across a wide range of inputs.

How do I write property-based tests for smart contract logic?

To write property-based tests for smart contract logic, you define executable specifications and invariants. This Skill provides strategies to generate tests that validate serialization, validation, and normalization rules across multiple languages.

Can I use property-based testing to review and improve my existing test suite?

Yes, you can review existing property-based tests to analyze their quality. This Skill identifies weaknesses in current tests and suggests improvements to ensure roundtrips and invariants are properly maintained.

Does property-based testing work for serialization and normalization tasks?

Yes, property-based testing works for serialization and normalization tasks by detecting PBT opportunities. It helps generate tests that verify any encoded data can be correctly decoded while maintaining data structure invariants.

What's the best way to design tests using properties before implementation?

The best way to design tests with properties is to define specifications as executable properties before implementation. This approach guides development by ensuring roundtrips and invariants are established upfront.

When should I not use property-based testing over example-based tests?

You should avoid property-based testing when only simple, isolated example checks are needed. It is less suitable for scenarios lacking clear invariants, roundtrips, or serialization rules that require broad, automated input generation.