expectRevert should be able to check for custom errorsΒ #180
Description
Since 0.8.4 we have use of new and cheap custom errors https://blog.soliditylang.org/2021/04/21/custom-errors/
Using them in contract code, but in test I need to use expectRevert.uspecified to handle them in any way.
Reproduce:
pragma solidity ^0.8.4;
contract Test {
uint256 public num;
error CustomErrorMessage();
function willThrowOnZero(uint256 param) external {
if (param == 0) revert CustomErrorMessage();
num = param;
}
}const { contract } = require('@openzeppelin/test-environment');
const { expectRevert } = require('@openzeppelin/test-helpers');
const Test = contract.fromArtifact('Test');
describe('Custom test', function () {
let test;
before(async function () {
test = await Test.new();
})
describe('Test check', function () {
it('throws on zero', async function () {
await expectRevert.unspecified(test.willThrowOnZero('0'))
})
it('passes on non-zero', async function () {
await test.willThrowOnZero('1');
})
it('can not catch error name', async function () {
await expectRevert(test.willThrowOnZero('0'), "CustomErrorMessage")
})
})
})Test running throws:
