New submission from David Anderson <[EMAIL PROTECTED]>: Some test cases in Lib/test/mapping_tests.py are problematic for users wishing to test their own implementations of the mapping protocol:
- TestHashMappingProtocol.test_repr() requires the user implementations to look like a dict when repr() is applied. It is unclear why this is required of conforming mapping protocol implementations. - TestMappingProtocol.test_fromkeys() cannot pass for any implementation that uses its constructor in fromkeys(), because baddict1 defines a constructor accepting no arguments. It should accept *args, **kwargs to be sane for user implementations that handle passing data sources to the constructor. - TestHashMappingProtocol.test_mutatingiteration(), for some faulty implementations, makes the iteration degrade into an infinite loop. Making the test more strict (eg. keeping an explicit iteration count and failing if it goes >1) would be more helpful to buggy implementations. These all seem like trivial issues. If it is agreed that the repr_test should be removed from the ABC tests, I can provide a patch implementing these three corrections. ---------- components: Library (Lib) messages: 65639 nosy: danderson severity: normal status: open title: Mapping tests cannot be passed by user implementations type: behavior versions: Python 3.0 __________________________________ Tracker <[EMAIL PROTECTED]> <http://bugs.python.org/issue2661> __________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: http://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
