An ERC-20 token with a full test suite

#Brief

Tokens are the hello world of smart contracts, and they are also where careless code loses money. Build one the professional way: small, on audited libraries, and thoroughly tested. Use a local Anvil chain and, when you deploy publicly, a testnet such as Sepolia with free test ether from a faucet. Never use real funds or a wallet that holds any, and never paste a private key into code or a website.

#What to build

1. Create a Foundry project and install OpenZeppelin Contracts

2. Write a token with a fixed maximum supply, a minter role, a pauser role and an admin that can grant and revoke roles

3. Write unit tests for transfers, approvals, minting, pausing and every revert

4. Write fuzz tests for transfers and an invariant test that total supply equals the sum of all balances and never exceeds the cap

5. Write a forge script that deploys to Anvil, and document the roles and how to transfer admin safely

#Deliverables

• Repository with src/, test/, script/ and README.md

#How it is graded

Reviewers run forge test, read your invariants, and try to mint above the cap or pause without the role.

#Stretch

Add EIP-2612 permit support and tests for signature expiry and replay.