[issue26015] Add new tests for pickling iterators of mutable sequences

[Raymond Hettinger]

Raymond Hettinger added the comment:

These tests look fine.  I won't miss "orgit" ;-)

In test_reversed_pickle, please add the blank line before each section like you did for the other tests.

I agree that exhausted array iterator should change to match the others.  Once an iterator is exhausted, it is required to remain exhausted even if the underlying data mutates.   That rule should survive even after dumping and loading.

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assignee: rhettinger -> serhiy.storchaka

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<http://bugs.python.org/issue26015>
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