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Should we mock the entities array from FishTank class if we use it in a test?

#1

Should we mock the entities array from FishTank class if we use it in a test?

#2

It’s not very trivial to mock a static field, unfortunately. Ideally you would, but for the purposes of A2, just making a “resetTank()” method that clears it is probably fine for the purposes of writing unit tests.