[issue37706] IDLE test_sidebar test_(click/drag)_selection fail on macOS 8.6

[Ned Deily]

Ned Deily <nad at python.org> added the comment:

I can reproduce this at will on all of the real and virtual macOS systems I've tried (10.12 through 10.14) even building with ActiveTcl 8.5.18.  Tal, make sure the appropriate tests cases are actually running.  If you don't have a proper Gui installation of your Python, many of the GUI-related test cases in test_idle are silently skipped unless you add -v or something:

/usr/local/bin/python3.8 -m test -v -uall test_idle

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Python tracker <report at bugs.python.org>
<https://bugs.python.org/issue37706>
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