Update regression tests for PyCQA/astroid#940

[nelfin]

Steps

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  doc/whatsnew/<current release.rst>.
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Description

Changes to the inference of properties in a class context affected some existing tests

Type of Changes

	Type
✓	🐛 Bug fix

Related Issue

Ref pylint-dev/astroid#940
Depends on pylint-dev/astroid#941

[nelfin]

The following guard can actually be removed if Enum.__members__ is correctly inferred:

    if (
        owner.parent
        and isinstance(owner.parent, astroid.ClassDef)
        and owner.parent.name == "EnumMeta"
        and owner_name == "__members__"
        and node.attrname in ["items", "values", "keys"]
    ):
        # Avoid false positive on Enum.__members__.{items(), values, keys}
        # See https://github.com/PyCQA/pylint/issues/4123
        return False

[Pierre-Sassoulas]

Thank you. Is there a reason why you did not remove the guard you detected ?

[coveralls]

Coverage remained the same at 91.689% when pulling 60835c4 on nelfin:fix/astroid-940-regression-tests into 3fc4052 on PyCQA:master.

[nelfin]

Is there a reason why you did not remove the guard you detected ?

To decouple this MR from the astroid changes. If I remove that guard, then this changeset should only be merged after pylint-dev/astroid#941, but if I leave it in then this can be merged before (since all the tests still pass) and that guard removed in a later change.

[Pierre-Sassoulas]

Thank you for the explanation :)