// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import { IAMB } from "../CrossChainUpgradeableProxy.sol"; contract MockAMB is IAMB { address public xDomainMessageSender; bytes32 public xDomainMessageChainId; constructor(address _xDomainMessageSender, uint256 _xDomainMessageChainId) { xDomainMessageSender = _xDomainMessageSender; xDomainMessageChainId = bytes32(uint256(_xDomainMessageChainId)); } function setMessageSender(address _sender) external { xDomainMessageSender = _sender; } function messageSender() external view override returns (address) { return xDomainMessageSender; } function messageSourceChainId() external view override returns (bytes32) { return xDomainMessageChainId; } function execute(address _who, bytes calldata _calldata) external returns (bool success, bytes memory result) { (success, result) = _who.call(_calldata); require(success, string(result)); } }