test_asyncio: test_sendfile_close_peer_in_the_middle_of_receiving() fails randomly

[vstinner]

BPO	43539
Nosy	@vstinner, @asvetlov, @1st1
PRs	bpo-43843: libregrtest uses threading.excepthook #25400
Superseder	bpo-41682: [Windows] : Proactor test_sendfile_close_peer_in_the_middle_of_receiving failure

^{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 2021-04-15.12:53:00.313>
created_at = <Date 2021-03-18.08:27:23.871>
labels = ['tests', '3.10', 'expert-asyncio']
title = 'test_asyncio: test_sendfile_close_peer_in_the_middle_of_receiving() fails randomly'
updated_at = <Date 2021-04-15.12:53:00.313>
user = 'https://github.com/vstinner'

bugs.python.org fields:

activity = <Date 2021-04-15.12:53:00.313>
actor = 'vstinner'
assignee = 'none'
closed = True
closed_date = <Date 2021-04-15.12:53:00.313>
closer = 'vstinner'
components = ['Tests', 'asyncio']
creation = <Date 2021-03-18.08:27:23.871>
creator = 'vstinner'
dependencies = []
files = []
hgrepos = []
issue_num = 43539
keywords = ['patch']
message_count = 3.0
messages = ['388997', '389084', '391133']
nosy_count = 3.0
nosy_names = ['vstinner', 'asvetlov', 'yselivanov']
pr_nums = ['25400']
priority = 'normal'
resolution = 'duplicate'
stage = 'resolved'
status = 'closed'
superseder = '41682'
type = None
url = 'https://bugs.python.org/issue43539'
versions = ['Python 3.10']

[vstinner]

Seen on the Windows x64 job of GitHub Actions:
https://github.com/python/cpython/pull/24913/checks?check_run_id=2137800313

======================================================================
FAIL: test_sendfile_close_peer_in_the_middle_of_receiving (test.test_asyncio.test_sendfile.ProactorEventLoopTests)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "D:\a\cpython\cpython\lib\test\test_asyncio\test_sendfile.py", line 458, in test_sendfile_close_peer_in_the_middle_of_receiving
    self.run_loop(
AssertionError: ConnectionError not raised

(...)
0:12:31 load avg: 0.39 Re-running test_asyncio in verbose mode
(...)

======================================================================
FAIL: test_sendfile_close_peer_in_the_middle_of_receiving (test.test_asyncio.test_sendfile.ProactorEventLoopTests)
----------------------------------------------------------------------

Traceback (most recent call last):
  File "D:\a\cpython\cpython\lib\test\test_asyncio\test_sendfile.py", line 458, in test_sendfile_close_peer_in_the_middle_of_receiving
    self.run_loop(
AssertionError: ConnectionError not raised

[vstinner]

It failed again:
https://github.com/python/cpython/pull/24933/checks?check_run_id=2148450378

[vstinner]

Duplicate of bpo-41682.

[sobolevn]

And again: #110325