Smart Contract Testing (Foundry)

Trust Score 90/100

Practical guide and patterns for smart contract tests using Foundry: unit tests, fuzzing, fork tests, and invariants to catch economic and integration bugs.

triggers:smart contract testingfoundryfuzzfork testinvariant test

GitHub SKILL.md

What it does

Provides pragmatic patterns, examples, and checklists for testing Ethereum smart contracts with Foundry. Covers unit tests, fuzz testing, fork testing against real protocol contracts, and invariant testing to surface economic failures. Includes sample test code and a pre-deploy checklist.

When to use it

Use this skill when writing or reviewing tests for Solidity contracts — especially when you need to test integrations (Uniswap/Aave), fuzz inputs, or assert invariants across random sequences. Ideal for CI test suites and pre-deploy safety checks.

What's included

Scripts: none in repo (has_scripts=false) — focus is documentation and examples
References: minimal (has_references=false) — examples and addresses may be included in repo
Instructions: concrete examples for unit, fuzz, fork, and invariant tests; best-practice guidance on what not to test and a pre-deploy checklist.

Compatible agents

Useful for developer-focused agents and CI automation that can run Foundry (forge) in CI environments; agent outputs are mostly actionable test code and checklists.

Audit Summary

Pure documentation skill for smart contract testing with Foundry. Covers unit tests, fuzz testing, fork testing, and invariant testing with solid code examples and practical guidance. No scripts to execute. Well-structured content with clear progressive disclosure from basics to advanced patterns.

Watch Out

References addresses/SKILL.md for verified contract addresses but this is an external dependency
Fork testing requires an RPC endpoint (Alchemy or similar) which users must configure separately

Notes

No executable scripts — static analysis only. The skill is a well-written reference guide with concrete Solidity code examples. Encourages good testing practices (fuzzing, invariants, fork tests) and explicitly calls out anti-patterns. Minor concern: fork testing section references external RPC URLs which could encourage hardcoded API keys, though the skill itself doesn't hardcode any.

Information

Repository: ethskills
Stars: 196
Installs: 0

Trust Score

Overall90

Security95

Code Quality88

Architecture78

Usefulness72

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