108 lines
3.1 KiB
Python
108 lines
3.1 KiB
Python
"""
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Multiple python programs invoking ``tractor.run()``
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"""
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import platform
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import sys
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import time
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import signal
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import subprocess
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import pytest
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import tractor
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from conftest import tractor_test
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# Sending signal.SIGINT on subprocess fails on windows. Use CTRL_* alternatives
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if platform.system() == 'Windows':
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_KILL_SIGNAL = signal.CTRL_BREAK_EVENT
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_INT_SIGNAL = signal.CTRL_C_EVENT
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_INT_RETURN_CODE = 3221225786
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_PROC_SPAWN_WAIT = 2
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else:
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_KILL_SIGNAL = signal.SIGKILL
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_INT_SIGNAL = signal.SIGINT
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_INT_RETURN_CODE = 1 if sys.version_info < (3, 8) else -signal.SIGINT.value
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_PROC_SPAWN_WAIT = 0.6 if sys.version_info < (3, 7) else 0.4
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def sig_prog(proc, sig):
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"Kill the actor-process with ``sig``."
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proc.send_signal(sig)
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time.sleep(0.1)
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if not proc.poll():
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# TODO: why sometimes does SIGINT not work on teardown?
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# seems to happen only when trace logging enabled?
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proc.send_signal(_KILL_SIGNAL)
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ret = proc.wait()
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assert ret
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@pytest.fixture
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def daemon(loglevel, testdir, arb_addr):
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cmdargs = [
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sys.executable, '-c',
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"import tractor; tractor.run_daemon((), arbiter_addr={}, loglevel={})"
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.format(
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arb_addr,
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"'{}'".format(loglevel) if loglevel else None)
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]
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kwargs = dict()
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if platform.system() == 'Windows':
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# without this, tests hang on windows forever
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kwargs['creationflags'] = subprocess.CREATE_NEW_PROCESS_GROUP
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proc = testdir.popen(
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cmdargs,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE,
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**kwargs,
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)
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assert not proc.returncode
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time.sleep(_PROC_SPAWN_WAIT)
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yield proc
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sig_prog(proc, _INT_SIGNAL)
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def test_abort_on_sigint(daemon):
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assert daemon.returncode is None
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time.sleep(0.1)
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sig_prog(daemon, _INT_SIGNAL)
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assert daemon.returncode == _INT_RETURN_CODE
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# XXX: oddly, couldn't get capfd.readouterr() to work here?
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if platform.system() != 'Windows':
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# don't check stderr on windows as its empty when sending CTRL_C_EVENT
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assert "KeyboardInterrupt" in str(daemon.stderr.read())
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@tractor_test
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async def test_cancel_remote_arbiter(daemon, arb_addr):
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assert not tractor.current_actor().is_arbiter
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async with tractor.get_arbiter(*arb_addr) as portal:
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await portal.cancel_actor()
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time.sleep(0.1)
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# the arbiter channel server is cancelled but not its main task
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assert daemon.returncode is None
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# no arbiter socket should exist
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with pytest.raises(OSError):
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async with tractor.get_arbiter(*arb_addr) as portal:
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pass
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def test_register_duplicate_name(daemon, arb_addr):
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async def main():
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assert not tractor.current_actor().is_arbiter
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async with tractor.open_nursery() as n:
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p1 = await n.start_actor('doggy')
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p2 = await n.start_actor('doggy')
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async with tractor.wait_for_actor('doggy') as portal:
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assert portal.channel.uid in (p2.channel.uid, p1.channel.uid)
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await n.cancel()
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# run it manually since we want to start **after**
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# the other "daemon" program
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tractor.run(main, arbiter_addr=arb_addr)
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