Tkinter: test_winfo_rgb failure

[E-Paine]

BPO	45496
Nosy	@terryjreedy, @serhiy-storchaka, @miss-islington, @E-Paine
PRs	bpo-45496: Allow flexibility in winfo_rgb tests #30185 [3.10] bpo-45496: Allow flexibility in winfo_rgb tests (GH-30185) #30266 [3.9] bpo-45496: Allow flexibility in winfo_rgb tests (GH-30185) #30267

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

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GitHub fields:

assignee = None
closed_at = <Date 2021-12-26.12:40:16.221>
created_at = <Date 2021-10-16.16:29:00.234>
labels = ['tests', 'expert-tkinter', '3.11']
title = 'Tkinter: test_winfo_rgb failure'
updated_at = <Date 2021-12-26.12:40:23.989>
user = 'https://github.com/E-Paine'

bugs.python.org fields:

activity = <Date 2021-12-26.12:40:23.989>
actor = 'serhiy.storchaka'
assignee = 'none'
closed = True
closed_date = <Date 2021-12-26.12:40:16.221>
closer = 'serhiy.storchaka'
components = ['Tests', 'Tkinter']
creation = <Date 2021-10-16.16:29:00.234>
creator = 'epaine'
dependencies = []
files = []
hgrepos = []
issue_num = 45496
keywords = ['patch']
message_count = 6.0
messages = ['404097', '404104', '404105', '409193', '409195', '409198']
nosy_count = 4.0
nosy_names = ['terry.reedy', 'serhiy.storchaka', 'miss-islington', 'epaine']
pr_nums = ['30185', '30266', '30267']
priority = 'normal'
resolution = 'fixed'
stage = 'resolved'
status = 'closed'
superseder = None
type = None
url = 'https://bugs.python.org/issue45496'
versions = ['Python 3.11']

[E-Paine]

This issue is to separately address the test_winfo_rgb failure reported by myself in bpo-43139. This issue does not currently affect any of the buildbots.

---

On one computer I am experiencing a problem with the test_winfo_rgb test:

======================================================================
FAIL: test_winfo_rgb (tkinter.test.test_tkinter.test_misc.MiscTest)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "/cpython/Lib/tkinter/test/test_tkinter/test_misc.py", line 213, in test_winfo_rgb
    self.assertEqual(rgb('#4a3c8c'), (0x4a4a, 0x3c3c, 0x8c8c))
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError: Tuples differ: (19016, 15399, 35985) != (19018, 15420, 35980)

First differing element 0:
19016
19018

• (19016, 15399, 35985)
  ? ^ ^^^ ^

+ (19018, 15420, 35980)
? ^ ^^^ ^

I have tested another computer with a very similar setup (Plasma on X11) with exactly the same monitor (both using HDMI) and it passed this test. The only notable difference is one computer is using Intel integrated graphics while the other is Nvidia.

[serhiy-storchaka]

And on what of them it is failed?

[E-Paine]

Nvidia (using the proprietary drivers)

[serhiy-storchaka]

New changeset 2e3e0d2 by E-Paine in branch 'main':
bpo-45496: Allow flexibility in winfo_rgb tests (GH-30185)
2e3e0d2

[miss-islington]

New changeset bb0b5c1 by Miss Islington (bot) in branch '3.10':
bpo-45496: Allow flexibility in winfo_rgb tests (GH-30185)
bb0b5c1

[miss-islington]

New changeset aa056ed by Miss Islington (bot) in branch '3.9':
bpo-45496: Allow flexibility in winfo_rgb tests (GH-30185)
aa056ed