writing-foundry-tests

What problem does it solve?

Writing robust Foundry tests for Solidity contracts can be challenging without clear patterns and best practices. This Skill provides a structured guide to help engineers write deterministic tests, use cheatcodes correctly, and organize tests with invariant checks and fuzzing.

Core Features & Use Cases

• Enforces test naming conventions (test_, testFuzz_, invariant_) and isolation via setUp to ensure reliable CI outcomes.
• Demonstrates practical cheatcodes usage (makeAddr, deal, vm.prank, vm.expectRevert) and pattern-driven test patterns for readability.
• Covers invariants and handler-based fuzzing to catch deep edge cases and maintain global contract health.

Quick Start

Create a new Foundry test file following the conventions shown, then run forge test to validate contract behavior.