SafeERC20Wrapper.sol

pragma solidity ^0.5.2;

import "../token/ERC20/IERC20.sol";
import "../token/ERC20/SafeERC20.sol";
import "./ERC20ReturnTrueMock.sol";

contract SafeERC20Wrapper {
    using SafeERC20 for IERC20;

    IERC20 private _token;

    constructor (IERC20 token) public {
        _token = token;
    }

    function transfer() public {
        _token.safeTransfer(address(0), 0);
    }

    function transferFrom() public {
        _token.safeTransferFrom(address(0), address(0), 0);
    }

    function approve(uint256 amount) public {
        _token.safeApprove(address(0), amount);
    }

    function increaseAllowance(uint256 amount) public {
        _token.safeIncreaseAllowance(address(0), amount);
    }

    function decreaseAllowance(uint256 amount) public {
        _token.safeDecreaseAllowance(address(0), amount);
    }

    function setAllowance(uint256 allowance_) public {
        ERC20ReturnTrueMock(address(_token)).setAllowance(allowance_);
    }

    function allowance() public view returns (uint256) {
        return _token.allowance(address(0), address(0));
    }
}