2
Actually never mind, I just found the solution, which is definitely not very intuitive. I leave it here in case it can help someone.
const level = web3.utils.toBN(1); // <------ we must use this function
truffleAssert.eventEmitted(tx, 'EventName', {level}); // now this works
So just using web3.utils.toBN suffices.
Only top voted, non community-wiki answers of a minimum length are eligible
