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bpo-30107: don't dump core on expected test_io crash (#1235) (#1241)

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test_io has two unit tests which trigger a deadlock:

* test_daemon_threads_shutdown_stdout_deadlock()
* test_daemon_threads_shutdown_stderr_deadlock()

These tests call Py_FatalError() if the expected bug is triggered
which calls abort(). Use test.support.SuppressCrashReport to prevent
the creation on a core dump, to fix the warning:

Warning -- files was modified by test_io
  Before: []
  After:  ['python.core']
(cherry picked from commit 2a1aed04b0)
This commit is contained in:
Victor Stinner 2017-04-21 18:27:29 +02:00 • committed by GitHub
parent 483729526e
commit b984a05d55
1 changed files with 5 additions and 0 deletions
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5
Lib/test/test_io.py
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@ -3720,6 +3720,7 @@ class CMiscIOTest(MiscIOTest):
import sys import sys
import time import time
import threading import threading
from test.support import SuppressCrashReport
file = sys.{stream_name} file = sys.{stream_name}
@ -3728,6 +3729,10 @@ class CMiscIOTest(MiscIOTest):
file.write('.') file.write('.')
file.flush() file.flush()
crash = SuppressCrashReport()
crash.__enter__()
# don't call __exit__(): the crash occurs at Python shutdown
thread = threading.Thread(target=run) thread = threading.Thread(target=run)
thread.daemon = True thread.daemon = True
thread.start() thread.start()