GrimSwap Test

End-to-end test scripts for the GrimSwap privacy system.

V3 Multi-Token Tests

ETH → USDC Swap

src/ethToUsdcSwap.ts - Deposit ETH, receive USDC at stealth address

USDC → ETH Swap

src/usdcToEthSwap.ts - Deposit USDC, receive ETH at stealth address

Test Flow

1. Create deposit note (Poseidon commitment) - local
2. Deposit ETH or USDC to GrimPoolMultiToken - on-chain
3. Build Poseidon Merkle tree - local
4. Add Merkle root to pool - on-chain (testnet only)
5. Generate stealth address - local
6. Generate Groth16 ZK proof - local (snarkjs)
7. Send proof to relayer → GrimSwapRouterV2 → Uniswap v4 swap
8. Verify privacy + token receipt at stealth address

Running

# Start relayer first
cd ../grimswap-relayer && npm run dev

# Run ETH → USDC test
PRIVATE_KEY=0x... npx ts-node --esm src/ethToUsdcSwap.ts

# Run USDC → ETH test
PRIVATE_KEY=0x... npx ts-node --esm src/usdcToEthSwap.ts

Contract Addresses (V3 - Unichain Sepolia)

Contract	Address
GrimPoolMultiToken	0x6777cfe2A72669dA5a8087181e42CA3dB29e7710
GrimSwapZK (Hook)	0x6AFe3f3B81d6a22948800C924b2e9031e76E00C4
GrimSwapRouterV2	0x5EE78E89A0d5B4669b05aC8B7D7ea054a08f555f
Groth16Verifier	0xF7D14b744935cE34a210D7513471a8E6d6e696a0
PoolManager	0x00B036B58a818B1BC34d502D3fE730Db729e62AC
USDC	0x31d0220469e10c4E71834a79b1f276d740d3768F

Pool Configuration (V3)

const POOL_KEY = {
  currency0: "0x0000000000000000000000000000000000000000", // ETH
  currency1: "0x31d0220469e10c4E71834a79b1f276d740d3768F", // USDC
  fee: 500,        // 0.05%
  tickSpacing: 10,
  hooks: "0x6AFe3f3B81d6a22948800C924b2e9031e76E00C4",
};

Swap Directions

Direction	zeroForOne	inputToken
ETH → USDC	true	(not set)
USDC → ETH	false	USDC address

Test Results (V3)

ETH → USDC

• TX: 0x22b313f89d9a706e79e34dfcaa24c411fcd10335af46995ed6677c85562b65be
• Input: 0.001 ETH → Output: 224.36 USDC at stealth address
• Gas: 901,815
• All privacy guarantees verified

USDC → ETH

• TX: 0xbf064fbc7344be22b3ad1bb52181fb0223602c334b74236eb70b9215d20e5120
• Input: 1 USDC → Output: ~0.0005 ETH at stealth address
• Gas: 566,146
• All privacy guarantees verified

Other Scripts

Script	Description
checkBalances.ts	Check ETH/token balances
fullZKSwap.ts	Legacy ETH-only swap test
fullZKSwapWithRelayer.ts	Legacy relayer test

License

MIT