Showing content from http://svn.python.org/projects/python/branches/test_subprocess_10826/Lib/test/test_wait3.py below:
"""This test checks for correct wait3() behavior. """ import os import time import unittest from test.fork_wait import ForkWait from test.support import run_unittest, reap_children try: os.fork except AttributeError: raise unittest.SkipTest("os.fork not defined -- skipping test_wait3") try: os.wait3 except AttributeError: raise unittest.SkipTest("os.wait3 not defined -- skipping test_wait3") class Wait3Test(ForkWait): def wait_impl(self, cpid): for i in range(10): # wait3() 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.wait3(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(Wait3Test) reap_children() if __name__ == "__main__": test_main()
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