pragma solidity ^0.4.23; import '../utility/Utils.sol'; /* Utils test helper that exposes the safe math functions */ contract TestUtils is Utils { constructor() public { } function testSafeAdd(uint256 _x, uint256 _y) public pure returns (uint256) { return super.safeAdd(_x, _y); } function testSafeSub(uint256 _x, uint256 _y) public pure returns (uint256) { return super.safeSub(_x, _y); } function testSafeMul(uint256 _x, uint256 _y) public pure returns (uint256) { return super.safeMul(_x, _y); } }