New feature idea: elementsEqualIgnoringOrder

[amomchilov]

• I have read CONTRIBUTING and have done my best to follow them.

Is it a good idea to implement an order-agnostic variant of the elementsEqual matcher? I don't mind implementing it, I just don't know if I'm testing "the right way".

For context, I'm testing an algorithm that produces an array whose elements are unordered. Under the hood, they're the result of flattening/filtering/processing a dictionary. I want to assert that say, 1, 2, 3 are present (and nothing else), ignoring the order they appear in.

My real elements aren't really sortable, so I can't just sort the expected result and actual result, and compare them that way.

I wouldn't mind implementing this and contributing it. Should I?

[andrey-shavelev]

That would be a really handy matcher, or even a set of matchers like in jest-extended:

https://github.com/jest-community/jest-extended#toincludeallmembersmembers