ANVIL: Become the engineer trusted to ship a contract that holds real money, the one who finds the drain before an attacker does
ANVIL: Become the engineer trusted to ship a contract that holds real money, the one who finds the drain before an attacker does - Image 2

ANVIL: Become the engineer trusted to ship a contract that holds real money, the one who finds the drain before an attacker does

$ 150.922,00

This book teaches you to use a local blockchain as your test bench, so the contract that holds funds meets every failure in your terminal instead of in production. It centers on Anvil, the local node from the Foundry toolkit, and builds from the basics, spinning up a chain, funded accounts, instant blocks, to the techniques that actually find bugs. You will fork mainnet so your tests run against the real deployed protocols your contract talks to, use cheatcodes to impersonate any address, set balances, and warp the clock past a deadline, and manipulate blocks and time to test logic that only triggers months later. Then it turns adversarial: simulating an attack locally, replaying the exact state where an exploit happened, and tracing a failing transaction to see where it really broke. The back half is discipline, writing fork-based integration tests that catch what unit tests miss, scripting repeatable deployments, and wiring the whole thing into CI so every push runs against a forked chain. The examples are real testing sessions against real contracts. For engineers who want the confidence that comes from having already broken their contract a thousand times locally before anyone else could try.

SKU: ANVIL-EN Category: Tags: , , ,

Description

Your contract passed every test, you shipped it, and a week later the vault is empty. The post-mortem is one paragraph: someone impersonated a whale, jumped the clock past the vesting cliff, and called the functions in an order your tests never tried, on the exact mainnet state you never ran against. None of that was in your suite, because your suite ran on a remote testnet that is slow, flaky, and gives you no control: you cannot fund an account freely, cannot become the address that breaks you, cannot rewind, cannot replay the block where the bug lives. So you tested the happy path and hoped. A contract that holds money meets the real world exactly once, and the real world is a public chain you cannot reset. What you are missing is a chain you own: one you can fork from mainnet, bend with cheatcodes, attack on purpose, and run ten thousand times before it ever touches production.

This book teaches you to use a local blockchain as your test bench, so the contract that holds funds meets every failure in your terminal instead of in production. It centers on Anvil, the local node from the Foundry toolkit, and builds from the basics, spinning up a chain, funded accounts, instant blocks, to the techniques that actually find bugs. You will fork mainnet so your tests run against the real deployed protocols your contract talks to, use cheatcodes to impersonate any address, set balances, and warp the clock past a deadline, and manipulate blocks and time to test logic that only triggers months later. Then it turns adversarial: simulating an attack locally, replaying the exact state where an exploit happened, and tracing a failing transaction to see where it really broke. The back half is discipline, writing fork-based integration tests that catch what unit tests miss, scripting repeatable deployments, and wiring the whole thing into CI so every push runs against a forked chain. The examples are real testing sessions against real contracts. For engineers who want the confidence that comes from having already broken their contract a thousand times locally before anyone else could try.

Who this was written for

This book is for: engineers writing smart contracts who are tired of testing against a slow public testnet, and want a local chain they can fork, fund, fast-forward, and break, so they catch bugs before they ship.

What’s in this book

  • Chapter 1: The testnet that wasted your week
  • Chapter 2: Stop begging a faucet for test ether
  • Chapter 3: A private copy of mainnet, without downloading it
  • Chapter 4: The bug only a real whale can trigger
  • Chapter 5: Test a 30-day lock in a millisecond
  • Chapter 6: Your tests pass. Would the real USDC agree?
  • Chapter 7: Attack your own vault before someone else does
  • Chapter 8: When a test reverts and won’t say where
  • Chapter 9: The test suite that only runs when you remember
  • Chapter 10: The one transaction you can never take back
  • Chapter 11: The token that doesn’t send what you sent
  • Chapter 12: Why 100% coverage still loses the money
  • Chapter 13: Ship because you already know how it breaks

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