cpython/Lib/test/test_wait4.py
Neal Norwitz 10b835c401 The hppa ubuntu box sometimes hangs forever in these tests. My guess
is that the wait is failing for some reason.  Use WNOHANG, so we won't
wait until the buildbot kills the test suite.

I haven't been able to reproduce the failure, so I'm not sure if
this will help or not.  Hopefully, this change will cause the test
to fail, rather than hang.  That will be better since we will get
the rest of the test results.  It may also help us debug the real problem.
2006-06-18 19:37:40 +00:00

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1,017 B
Python

"""This test checks for correct wait4() behavior.
"""
import os
import time
from test.fork_wait import ForkWait
from test.test_support import TestSkipped, run_unittest
try:
os.fork
except AttributeError:
raise TestSkipped, "os.fork not defined -- skipping test_wait4"
try:
os.wait4
except AttributeError:
raise TestSkipped, "os.wait4 not defined -- skipping test_wait4"
class Wait4Test(ForkWait):
def wait_impl(self, cpid):
for i in range(10):
# wait4() shouldn't hang, but some of the buildbots seem to hang
# in the forking tests. This is an attempt to fix the problem.
spid, status, rusage = os.wait4(cpid, os.WNOHANG)
if spid == cpid:
break
time.sleep(1.0)
self.assertEqual(spid, cpid)
self.assertEqual(status, 0, "cause = %d, exit = %d" % (status&0xff, status>>8))
self.assertTrue(rusage)
def test_main():
run_unittest(Wait4Test)
if __name__ == "__main__":
test_main()