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import sys
from pathlib import Path
import psutil
import pytest
from xprocess import ProcessStarter
server_path = Path(__file__).parent.joinpath("server.py").absolute()
@pytest.mark.parametrize("proc_name", ["s1", "s2", "s3"])
def test_clean_shutdown(tcp_port, proc_name, xprocess):
class Starter(ProcessStarter):
pattern = "started"
args = [sys.executable, server_path, tcp_port]
xprocess.ensure(proc_name, Starter)
info = xprocess.getinfo(proc_name)
assert info.isrunning()
children = psutil.Process(info.pid).children()
assert info.terminate() == 1
for child in children:
assert not child.is_running() or child.status() == psutil.STATUS_ZOMBIE
@pytest.mark.parametrize("proc_name", ["s1", "s2", "s3"])
def test_terminate_no_pid(tcp_port, proc_name, xprocess):
class Starter(ProcessStarter):
pattern = "started"
args = [sys.executable, server_path, tcp_port]
xprocess.ensure(proc_name, Starter)
info = xprocess.getinfo(proc_name)
pid, info.pid = info.pid, None
# call terminate through XProcessInfo instance
# with pid=None to test edge case
assert info.terminate() == 0
info.pid = pid
info.terminate()
@pytest.mark.parametrize("proc_name", ["s1", "s2", "s3"])
def test_terminate_only_parent(tcp_port, proc_name, xprocess):
class Starter(ProcessStarter):
pattern = "started"
args = [sys.executable, server_path, tcp_port]
xprocess.ensure(proc_name, Starter)
info = xprocess.getinfo(proc_name)
children = psutil.Process(info.pid).children()
assert info.terminate(kill_proc_tree=False) == 1
assert not info.isrunning()
for p in children:
try:
p.terminate()
except Exception:
pass
@pytest.mark.skipif(
sys.platform == "win32",
reason="on windows SIGTERM is treated as an alias for kill()",
)
@pytest.mark.parametrize("proc_name", ["s1", "s2", "s3"])
def test_sigkill_after_failed_sigterm(tcp_port, proc_name, xprocess):
# explicitly tell xprocess_starter fixture to make
# server instance ignore SIGTERM
class Starter(ProcessStarter):
pattern = "started"
args = [sys.executable, server_path, tcp_port, "--ignore-sigterm"]
xprocess.ensure(proc_name, Starter)
info = xprocess.getinfo(proc_name)
# since terminate with sigterm will fail, set a lower
# timeout before sending sigkill so tests won't take too long
assert (
info.terminate(timeout=2) == 1
or psutil.Process(info.pid).status() == psutil.STATUS_ZOMBIE
)
@pytest.mark.parametrize("proc_name", ["s1", "s2", "s3"])
def test_return_value_on_failure(tcp_port, proc_name, xprocess):
class Starter(ProcessStarter):
pattern = "started"
args = [sys.executable, server_path, tcp_port]
xprocess.ensure(proc_name, Starter)
info = xprocess.getinfo(proc_name)
assert info.terminate(timeout=-1) == -1
try:
# make sure hanging processes are not left behind
psutil.Process(info.pid).terminate()
except psutil.NoSuchProcess:
pass
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