"OpenZeppelin Test Helpers" is an assertion library which makes it easier to test EVM-based Smart Contracts. Using it you can easily check if reverts happen for the right reason, events are emitted when the should, balances are updated, and much more.
Protip: With the help of Test Helpers you can emulate the passing of time which comes in handy if you have functionality which depends on a certain block height.
- OpenZeppelin