Web3 Testing

This covers the essential testing patterns you'll actually use in production smart contract development. It sets up proper Hardhat and Foundry configurations with gas reporting, coverage, and mainnet forking capabilities. The examples show real testing scenarios like fuzzing with Foundry's property-based tests, impersonating whale accounts for DeFi integration tests, and using fixtures to avoid repetitive setup. What makes this genuinely useful is the focus on advanced patterns like snapshot testing for complex state changes and gas optimization comparisons between different implementations. If you're building anything beyond basic contracts, you'll need these testing strategies to catch edge cases and ensure your contracts behave correctly under real market conditions.

skills.sh installs: 11.2K
GitHub stars: 42.4K
last updated: Aug 21, 2026

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Install

$ npx -y skills add wshobson/agents --skill web3-testing --agent claude-code

Installs into .claude/skills of the current project.

Files

Web3 Smart Contract Testing

Master comprehensive testing strategies for smart contracts using Hardhat, Foundry, and advanced testing patterns.

When to Use This Skill

Writing unit tests for smart contracts
Setting up integration test suites
Performing gas optimization testing
Fuzzing for edge cases
Forking mainnet for realistic testing
Automating test coverage reporting
Verifying contracts on Etherscan

Hardhat Testing Setup

// hardhat.config.js
require("@nomicfoundation/hardhat-toolbox");
require("@nomiclabs/hardhat-etherscan");
require("hardhat-gas-reporter");
require("solidity-coverage");

SKILL.md on GitHub

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