#3458 isUnmodifiable assertion for Iterator instances #3477
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Check List:
isUnmodifiable
assertion forIterator
instances #3458Following the contributing guidelines will make it easier for us to review and accept your PR.
What was done
I can only check if an iterator is unmodifiable by calling
remove()
and checking if the iterator throwsUnsupportedOperationException
. However not all unmodifiable iterators behave like that, see my comment in the ticket.That's why I check explicitly for
Collections$EmptyIterator
andCollections$EmptyListIterator
.cc @scordio