openzeppelin-contracts/contracts/mocks/ECDSAMock.sol

pragma solidity ^0.4.24;

import "../cryptography/ECDSA.sol";

contract ECDSAMock {
  using ECDSA for bytes32;

  function recover(bytes32 hash, bytes signature)
    public
    pure
    returns (address)
  {
    return hash.recover(signature);
  }

  function toEthSignedMessageHash(bytes32 hash)
    public
    pure
    returns (bytes32)
  {
    return hash.toEthSignedMessageHash();
  }
}