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/ Foundry Cheatcode Generator

Available Cheatcodes (17)

Foundry Cheatcodes: Special testing functions that manipulate the EVM state. Use these in your Foundry tests to control time, impersonate accounts, mock calls, and more. All cheatcodes are prefixed with vm.

/ Selected Tool

Foundry Cheatcode Generator

Generate Foundry test cheatcodes (vm.prank, vm.deal, vm.warp, etc.)

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What are Foundry Cheatcodes?

Cheatcodes are special functions in Foundry that allow you to manipulate the EVM state during tests. They enable time travel, account impersonation, balance manipulation, and more.

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How does it work?

Common Use Cases Pranking: Impersonate any address with vm.prank() or vm.startPrank(). Balance: Set ETH balances with vm.deal(). Time: Control block.timestamp with vm.warp(). Mocking: Mock external calls with vm.mockCal…

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Sample Cases

Covers Impersonate USDC Transfer (Mainnet), Uniswap Liquidity Testing, and Aave Flashloan Mock Test so you can compare common inputs and outputs quickly.

/ Code

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/ Integration

Source code from the selected tool, shown here alongside the live version on the right.

/ Source Code

TypeScript

typescript

// No external packages needed - Foundry built-in cheatcodes
// Use in Foundry tests (.t.sol files)

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

import "forge-std/Test.sol";

contract CheatcodeExamples is Test {
    // Pranking: Impersonate addresses