uniswap-v4-testing

Uniswap V4 Testing with Foundry

Test Setup with Deployers

The Deployers base contract from v4-core bootstraps a complete V4 environment — PoolManager, test routers, currencies, and standard constants.

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.24;

import "forge-std/Test.sol";
import {Deployers} from "v4-core/test/utils/Deployers.sol";
import {PoolSwapTest} from "v4-core/src/test/PoolSwapTest.sol";
import {PoolModifyLiquidityTest} from "v4-core/src/test/PoolModifyLiquidityTest.sol";
import {IPoolManager} from "v4-core/src/interfaces/IPoolManager.sol";
import {IHooks} from "v4-core/src/interfaces/IHooks.sol";
import {PoolKey} from "v4-core/src/types/PoolKey.sol";
import {PoolId, PoolIdLibrary} from "v4-core/src/types/PoolId.sol";
import {Currency, CurrencyLibrary} from "v4-core/src/types/Currency.sol";
import {BalanceDelta} from "v4-core/src/types/BalanceDelta.sol";
import {SwapParams, ModifyLiquidityParams} from "v4-core/src/types/PoolOperation.sol";
import {Hooks} from "v4-core/src/libraries/Hooks.sol";
import {TickMath} from "v4-core/src/libraries/TickMath.sol";
import {StateLibrary} from "v4-core/src/libraries/StateLibrary.sol";

import {MyHook} from "../src/MyHook.sol";

contract MyHookTest is Test, Deployers {
    using PoolIdLibrary for PoolKey;
    using StateLibrary for IPoolManager;
    using CurrencyLibrary for Currency;

    MyHook hook;
    // `PoolKey key` is inherited from Deployers; redeclaring it is a DeclarationError
    PoolId poolId;

    function setUp() public {
        deployFreshManagerAndRouters();
        deployMintAndApprove2Currencies();

        // Deploy hook to mined address (see HookMiner section)
        _deployHook();

        key = PoolKey(currency0, currency1, 3000, 60, IHooks(address(hook)));
        manager.initialize(key, SQRT_PRICE_1_1);
        poolId = key.toId();

        modifyLiquidityRouter.modifyLiquidity(
            key,
            ModifyLiquidityParams({
                tickLower: -120,
                tickUpper: 120,
                liquidityDelta: 10 ether,
                salt: bytes32(0)
            }),
            ZERO_BYTES
        );
    }
}