// Copyright 2021-2022, Offchain Labs, Inc.
// For license information, see https://github.com/OffchainLabs/nitro-contracts/blob/main/LICENSE
// SPDX-License-Identifier: BUSL-1.1

pragma solidity ^0.8.0;

import "@openzeppelin/contracts/token/ERC20/ERC20.sol";

interface IWETH9 {
    function deposit() external payable;

    function withdraw(
        uint256 _amount
    ) external;
}

contract TestWETH9 is ERC20, IWETH9 {
    constructor(string memory name_, string memory symbol_) ERC20(name_, symbol_) {}

    function deposit() external payable override {
        _mint(msg.sender, msg.value);
    }

    function withdraw(
        uint256 _amount
    ) external override {
        _burn(msg.sender, _amount);
        payable(address(msg.sender)).transfer(_amount);
    }
}