create test util for catching errors

[morrieinmaas]

see this PR comment for more detail

Happy to work on this.

[Iskander508]

How is this different from the jest expect(...).toThrow(Error)? E.g. used here: https://github.com/hyperledger/aries-framework-javascript/blob/main/packages/core/src/modules/ledger/__tests__/IndyPoolService.test.ts#L86

[morrieinmaas]

@Iskander508 This is different in the way that it allows to catch the entire error object and do some more validation on this. The link above is just the example. With the expect(...).toThrow(Error) you are limited with the validation you can do in one go (eg validate error of type x is thrown or error message x is present). It's just a little bit of extra scrutiny

[TimoGlastra]

Doesn't seem so relevant anymore. We can add it when the need arises