[New-bugs-announce] [issue31130] test_idle: idlelib.configdialog leaks references

[STINNER Victor]

New submission from STINNER Victor:

Starting at the following build, test_idle started to leak references:
http://buildbot.python.org/all/builders/AMD64%20Windows8.1%20Refleaks%203.x/builds/60/steps/test/logs/stdio

Example of leak:

$ ./python -m test -R 3:3 -u all test_idle -m idlelib.idle_test.test_configdialog.FontPageTest.test_set_samples
(...)
test_idle leaked [2168, 2168, 2168] references, sum=6504
test_idle leaked [1152, 1154, 1155] memory blocks, sum=3461
(...)

A bisection identified this commit:

commit 9397e2a87ed6e0e724ad71a0c751553620cb775e
Author: csabella <cheryl.sabella at gmail.com>
Date:   Sun Jul 30 13:34:25 2017 -0400

    bpo-31004: IDLE: Factor out FontPage class from configdialog (step 1) (#2905)
    
    The slightly modified tests continue to pass. The General test
    broken by the switch to Notebook is fixed.
    Patch mostly by Cheryl Sabella.

----------
messages: 299834
nosy: haypo
priority: normal
severity: normal
status: open
title: test_idle: idlelib.configdialog leaks references
type: resource usage
versions: Python 3.7

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue31130>
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