bpo-31034: Reliable signal handler for test_asyncio (#2867) · python/cpython@8300809 (original) (raw)

`@@ -166,25 +166,32 @@ def test_terminate(self):

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`@unittest.skipIf(sys.platform == 'win32', "Don't have SIGHUP")

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`def test_send_signal(self):

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code = 'import time; print("sleeping", flush=True); time.sleep(3600)'

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args = [sys.executable, '-c', code]

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create = asyncio.create_subprocess_exec(*args,

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stdout=subprocess.PIPE,

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loop=self.loop)

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proc = self.loop.run_until_complete(create)

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-

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@asyncio.coroutine

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def send_signal(proc):

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basic synchronization to wait until the program is sleeping

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line = yield from proc.stdout.readline()

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self.assertEqual(line, b'sleeping\n')

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bpo-31034: Make sure that we get the default signal handler (killing

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the process). The parent process may have decided to ignore SIGHUP,

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and signal handlers are inherited.

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old_handler = signal.signal(signal.SIGHUP, signal.SIG_DFL)

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try:

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code = 'import time; print("sleeping", flush=True); time.sleep(3600)'

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args = [sys.executable, '-c', code]

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create = asyncio.create_subprocess_exec(*args,

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stdout=subprocess.PIPE,

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loop=self.loop)

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proc = self.loop.run_until_complete(create)

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proc.send_signal(signal.SIGHUP)

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returncode = (yield from proc.wait())

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return returncode

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-

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returncode = self.loop.run_until_complete(send_signal(proc))

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self.assertEqual(-signal.SIGHUP, returncode)

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@asyncio.coroutine

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def send_signal(proc):

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basic synchronization to wait until the program is sleeping

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line = yield from proc.stdout.readline()

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self.assertEqual(line, b'sleeping\n')

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+

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proc.send_signal(signal.SIGHUP)

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returncode = (yield from proc.wait())

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return returncode

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+

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returncode = self.loop.run_until_complete(send_signal(proc))

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self.assertEqual(-signal.SIGHUP, returncode)

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finally:

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signal.signal(signal.SIGHUP, old_handler)

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`def prepare_broken_pipe_test(self):

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`# buffer large enough to feed the whole pipe buffer