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######################################################################
#
# File: test/integration/test_tqdm_closer.py
#
# Copyright 2023 Backblaze Inc. All Rights Reserved.
#
# License https://www.backblaze.com/using_b2_code.html
#
######################################################################
import re
import sys
import pytest
@pytest.mark.skipif(
(sys.platform != 'darwin') or ((sys.version_info.major, sys.version_info.minor) < (3, 11)),
reason='Tqdm closing error only occurs on OSX and python 3.11 or newer',
)
def test_tqdm_closer(b2_tool, bucket, file_name):
# test that stderr doesn't contain any warning, in particular warnings about multiprocessing resource tracker
# leaking semaphores
b2_tool.should_succeed([
'cat',
f'b2://{bucket.name}/{file_name}',
])
# test that disabling _TqdmCloser does produce a resource tracker warning. Should the following check ever fail,
# that would mean that either Tqdm or python fixed the issue and _TqdmCloser can be disabled for fixed versions
b2_tool.should_succeed(
[
'cat',
f'b2://{bucket.name}/{file_name}',
],
additional_env={'B2_TEST_DISABLE_TQDM_CLOSER': '1'},
expected_stderr_pattern=re.compile(
r'UserWarning: resource_tracker: There appear to be \d+ leaked semaphore'
r' objects to clean up at shutdown'
),
)
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