web3-testing

The web3-testing skill provides a comprehensive framework for testing Ethereum smart contracts using Hardhat and Foundry. It enables developers to implement unit tests, integration tests, and realistic mainnet-forked scenarios to ensure the reliability, security, and efficiency of their Solidity contracts. By combining advanced testing patterns with blockchain-specific tooling, this skill helps developers identify issues such as incorrect token transfers, failed assertions, and gas inefficiencies before deploying contracts to live networks.

Key features include support for Hardhat configuration with network forking, gas reporting, and Etherscan verification, alongside reusable test fixtures for consistent deployment and state management. The skill demonstrates unit testing patterns for deployment validation, token transactions, event emissions, time-based operations, and gas optimization. Foundry integration allows for Solidity-native testing through Forge, expanding the range of testing options. This structured approach ensures that both functional correctness and performance metrics are verified, providing confidence in contract behavior across different environments.

This skill is particularly valuable for blockchain developers, DeFi protocol engineers, and QA teams responsible for smart contract validation. Use cases include writing unit and integration tests for token contracts, executing fuzz tests for edge cases, performing gas optimization checks, automating test coverage reports, and verifying contracts on Etherscan. It is also suitable for developers who want to simulate real-world scenarios using mainnet forks to validate interactions with live protocol contracts. Overall, it streamlines the process of building robust, secure, and efficient Ethereum smart contracts.