pragma solidity ^0.4.24; import "../token/ERC20/ERC20.sol"; // mock class using ERC20 contract ERC20Mock is ERC20 { constructor(address _initialAccount, uint256 _initialBalance) public { _mint(_initialAccount, _initialBalance); } function mint(address _account, uint256 _amount) public { _mint(_account, _amount); } function burn(address _account, uint256 _amount) public { _burn(_account, _amount); } function burnFrom(address _account, uint256 _amount) public { _burnFrom(_account, _amount); } }