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16 changes: 15 additions & 1 deletion Lib/test/test_eintr.py
Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
import os
import signal
import subprocess
import sys
import unittest

from test import support
Expand All @@ -15,7 +17,19 @@ def test_all(self):
# thread (for reliable signal delivery).
tester = support.findfile("eintr_tester.py", subdir="eintrdata")
# use -u to try to get the full output if the test hangs or crash
script_helper.assert_python_ok("-u", tester)
args = ["-u", tester, "-v"]
if support.verbose:
print()
print("--- run eintr_tester.py ---")
# In verbose mode, the child process inherit stdout and stdout,
# to see output in realtime and reduce the risk of loosing output.
args = [sys.executable, "-E", "-X", "faulthandler", *args]
proc = subprocess.run(args)
print(f"--- eintr_tester.py completed: exit code {proc.returncode} ---")
if proc.returncode:
self.fail("eintr_tester.py failed")
else:
script_helper.assert_python_ok("-u", tester, "-v")


if __name__ == "__main__":
Expand Down