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Diffstat (limited to 'Lib/test/test_threading.py')
| -rw-r--r-- | Lib/test/test_threading.py | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/Lib/test/test_threading.py b/Lib/test/test_threading.py index 67e061e..a57085b 100644 --- a/Lib/test/test_threading.py +++ b/Lib/test/test_threading.py @@ -3,7 +3,7 @@ Tests for the threading module. """ import test.support -from test.support import verbose, import_module, cpython_only +from test.support import verbose, import_module, cpython_only, unlink from test.support.script_helper import assert_python_ok, assert_python_failure import random @@ -17,6 +17,7 @@ import os import subprocess import signal import textwrap +import traceback from test import lock_tests from test import support @@ -1243,6 +1244,22 @@ class ThreadingExceptionTests(BaseTestCase): # explicitly break the reference cycle to not leak a dangling thread thread.exc = None + def test_multithread_modify_file_noerror(self): + # See issue25872 + def modify_file(): + with open(test.support.TESTFN, 'w', encoding='utf-8') as fp: + fp.write(' ') + traceback.format_stack() + + self.addCleanup(unlink, test.support.TESTFN) + threads = [ + threading.Thread(target=modify_file) + for i in range(100) + ] + for t in threads: + t.start() + t.join() + class ThreadRunFail(threading.Thread): def run(self): |