def test_unused_pid(self):
"""Waiting on an unused PID should return immediately"""
unused_pid = self._unused_pid()
t0 = time.time()
pidmon.waitpid(unused_pid)
t1 = time.time()
time_taken = t1 - t0
self.assertLess(time_taken, .5)
def test_childpid(self, delay=.05):
"""waitpid handles direct child (nothing os.waitpid can't do)"""
p1 = _utils.DummyProcess()
try:
p1.start()
self._stop_process_after(p1, delay)
t0 = time.time()
pidmon.waitpid(p1.process.pid)
finally:
p1.stop()
t1 = time.time()
assert (delay < t1 - t0), "died {:.2f}s into {:.2f}s delay".format(t1 - t0, delay)
def test_grandchildpid(self, delay=.05):
"""waitpid handles grandchild (os.waitpid can't do this)"""
p1 = _utils.SpawnOnceProcess()
try:
p1.start()
p1_handle = pidmon.Process(p1.process.pid)
(p2_handle,) = p1_handle.children
self._stop_process_after(p1, delay)
t0 = time.time()
pidmon.waitpid(p1.process.pid)
finally:
p1.stop()
t1 = time.time()
assert (delay < t1 - t0), "died {:.2f}s into {:.2f}s delay".format(t1 - t0, delay)
