foundry-solidity

# Foundry Solidity Development Complete guide for building secure, efficient smart contracts with **Foundry 1.5.0** and **Solidity 0.8.30**. ## When to Use This Skill - Developing Ethereum/EVM smart contracts - Writing Forge tests (unit, fuzz, invariant, fork) - Deploying contracts with scripts - Using Foundry tools (forge, cast, anvil, chisel) - Working with `foundry.toml`, `*.t.sol`, `*.s.sol` files - Debugging transactions and contract interactions ## Quick Start ```bash # Create new project forge init my-project && cd my-project # Build contracts forge build # Run tests forge test # Deploy (dry-run) forge script script/Deploy.s.sol --rpc-url sepolia # Deploy (broadcast) forge script script/Deploy.s.sol --rpc-url sepolia --broadcast --verify ``` ## Project Structure ``` my-project/ ├── foundry.toml # Configuration ├── src/ # Contracts │ └── Counter.sol ├── test/ # Tests (*.t.sol) │ └── Counter.t.sol ├── script/ # Deploy scripts (*.s.sol) │ └── Deploy.s.sol └── lib/ # Dependencies └── forge-std/ ``` ## Core Commands ### Build & Test ```bash forge build # Compile forge test # Run all tests forge test -vvvv # With traces forge test --match-test testDeposit # Filter by test name forge test --match-contract Vault # Filter by contract forge test --fork-url $RPC_URL # Fork testing forge test --gas-report ...