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"""This test checks for correct wait4() behavior.
"""
import os
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):
spid, status, rusage = os.wait4(cpid, 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()
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