test_ttk_guionly: test_to() fails on the GitHub Ubuntu job

[vstinner]

BPO	42370
Nosy	@vstinner, @serhiy-storchaka, @miss-islington
PRs	bpo-42142: Try to fix timeouts in ttk tests #23474 bpo-42370: Check element before making mouse click in ttk tests #23491 [3.9] bpo-42370: Check element before making mouse click in ttk tests (GH-23491) #23497 [3.8] bpo-42370: Check element before making mouse click in ttk tests (GH-23491) #23498

^{Note: these values reflect the state of the issue at the time it was migrated and might not reflect the current state.}

Show more details

GitHub fields:

assignee = None
closed_at = <Date 2021-03-17.20:57:32.528>
created_at = <Date 2020-11-16.14:56:27.878>
labels = ['tests', 'expert-tkinter', '3.9']
title = 'test_ttk_guionly: test_to() fails on the GitHub Ubuntu job'
updated_at = <Date 2021-03-17.20:57:32.527>
user = 'https://github.com/vstinner'

bugs.python.org fields:

activity = <Date 2021-03-17.20:57:32.527>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2021-03-17.20:57:32.528>
closer = 'vstinner'
components = ['Tests', 'Tkinter']
creation = <Date 2020-11-16.14:56:27.878>
creator = 'vstinner'
dependencies = []
files = []
hgrepos = []
issue_num = 42370
keywords = ['patch']
message_count = 6.0
messages = ['381101', '381120', '381717', '381761', '381764', '382202']
nosy_count = 3.0
nosy_names = ['vstinner', 'serhiy.storchaka', 'miss-islington']
pr_nums = ['23474', '23491', '23497', '23498']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue42370'
versions = ['Python 3.9']

[vstinner]

Seen on the Ubuntu job on a GitHub PR:
https://github.com/python/cpython/pull/23315/checks?check_run_id=1406797840

======================================================================
FAIL: test_to (tkinter.test.test_ttk.test_widgets.SpinboxTest)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "/home/runner/work/cpython/cpython/Lib/tkinter/test/test_ttk/test_widgets.py", line 1175, in test_to
    self.assertEqual(self.spin.get(), '5')
AssertionError: '4' != '5'
- 4
+ 5

[vstinner]

I'm unable to reproduce the failure locally.

[serhiy-storchaka]

PR 23491 does not fix the failure, but it adds new checks which can provide additional information in case of failure.

[serhiy-storchaka]

New changeset b0b4285 by Serhiy Storchaka in branch 'master':
bpo-42370: Check element before making mouse click in ttk tests (GH-23491)
b0b4285

[miss-islington]

New changeset 8388a33 by Miss Islington (bot) in branch '3.8':
bpo-42370: Check element before making mouse click in ttk tests (GH-23491)
8388a33

[miss-islington]

New changeset b2652f2 by Miss Islington (bot) in branch '3.9':
bpo-42370: Check element before making mouse click in ttk tests (GH-23491)
b2652f2