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contracts...4_TestCustomError .sol

pragma solidity ^0.8.4;

error ErrorWithNoParams();
error ErrorWithParams(int x, string errorMessage);

contract TestCustomError {
    address payable owner = payable(msg.sender);

    function CustomErrorNoParams() public {
        revert ErrorWithNoParams();
    }
    
    function CustomErrorWithParams() public {
        revert ErrorWithParams(1, "this is an error");
    }

    function CustomErrorWithParamsView(int _x) external view {
        revert ErrorWithParams(_x, "this is an error");
    }


    function NormalRevert() public {
        revert("test error string");
    }
}