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Issue #12363: improve siginterrupt() tests

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Add a basic synchronization code between the child and the parent processes:
the child writes "ready" to stdout.
This commit is contained in:
Victor Stinner 2011-06-22 22:15:51 +02:00
parent c0a9f75fba
commit 4527365ee4
1 changed files with 7 additions and 0 deletions
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7
Lib/test/test_signal.py
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@ -333,6 +333,9 @@ class SiginterruptTest(unittest.TestCase):
def handler(signum, frame):
pass
print("ready")
sys.stdout.flush()
signal.signal(signal.SIGALRM, handler)
if interrupt is not None:
signal.siginterrupt(signal.SIGALRM, interrupt)
@ -353,11 +356,15 @@ class SiginterruptTest(unittest.TestCase):
""" % (interrupt,)
with spawn_python('-c', code) as process:
try:
# wait until the child process is loaded and has started
first_line = process.stdout.readline()
stdout, stderr = process.communicate(timeout=3.0)
except subprocess.TimeoutExpired:
process.kill()
return False
else:
stdout = first_line + stdout
exitcode = process.wait()
if exitcode not in (2, 3):
raise Exception("Child error (exit code %s): %s"