lib-python.2.7.test.test_wait3.py Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of jython-standalone Show documentation

Jython is an implementation of the high-level, dynamic, object-oriented language Python written in 100% Pure Java, and seamlessly integrated with the Java platform. It thus allows you to run Python on any Java platform.

The newest version!

"""This test checks for correct wait3() behavior.
"""

import os
import time
import unittest
from test.fork_wait import ForkWait
from test.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()