mirror of
https://github.com/python/cpython.git
synced 2025-10-31 13:41:24 +00:00
933 lines
33 KiB
Python
933 lines
33 KiB
Python
import os
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import signal
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import sys
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import textwrap
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import unittest
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import warnings
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from unittest import mock
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import asyncio
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from asyncio import base_subprocess
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from asyncio import subprocess
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from test.test_asyncio import utils as test_utils
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from test import support
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from test.support import os_helper
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if not support.has_subprocess_support:
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raise unittest.SkipTest("test module requires subprocess")
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if support.MS_WINDOWS:
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import msvcrt
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else:
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from asyncio import unix_events
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if support.check_sanitizer(address=True):
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raise unittest.SkipTest("Exposes ASAN flakiness in GitHub CI")
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# Program blocking
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PROGRAM_BLOCKED = [sys.executable, '-c', 'import time; time.sleep(3600)']
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# Program copying input to output
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PROGRAM_CAT = [
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sys.executable, '-c',
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';'.join(('import sys',
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'data = sys.stdin.buffer.read()',
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'sys.stdout.buffer.write(data)'))]
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def tearDownModule():
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asyncio._set_event_loop_policy(None)
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class TestSubprocessTransport(base_subprocess.BaseSubprocessTransport):
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def _start(self, *args, **kwargs):
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self._proc = mock.Mock()
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self._proc.stdin = None
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self._proc.stdout = None
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self._proc.stderr = None
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self._proc.pid = -1
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class SubprocessTransportTests(test_utils.TestCase):
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def setUp(self):
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super().setUp()
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self.loop = self.new_test_loop()
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self.set_event_loop(self.loop)
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def create_transport(self, waiter=None):
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protocol = mock.Mock()
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transport = TestSubprocessTransport(
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self.loop, protocol, ['test'], False,
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None, None, None, 0, waiter=waiter)
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return (transport, protocol)
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def test_proc_exited(self):
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waiter = self.loop.create_future()
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transport, protocol = self.create_transport(waiter)
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transport._process_exited(6)
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self.loop.run_until_complete(waiter)
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self.assertEqual(transport.get_returncode(), 6)
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self.assertTrue(protocol.connection_made.called)
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self.assertTrue(protocol.process_exited.called)
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self.assertTrue(protocol.connection_lost.called)
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self.assertEqual(protocol.connection_lost.call_args[0], (None,))
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self.assertFalse(transport.is_closing())
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self.assertIsNone(transport._loop)
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self.assertIsNone(transport._proc)
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self.assertIsNone(transport._protocol)
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# methods must raise ProcessLookupError if the process exited
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self.assertRaises(ProcessLookupError,
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transport.send_signal, signal.SIGTERM)
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self.assertRaises(ProcessLookupError, transport.terminate)
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self.assertRaises(ProcessLookupError, transport.kill)
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transport.close()
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def test_subprocess_repr(self):
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waiter = self.loop.create_future()
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transport, protocol = self.create_transport(waiter)
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transport._process_exited(6)
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self.loop.run_until_complete(waiter)
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self.assertEqual(
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repr(transport),
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"<TestSubprocessTransport pid=-1 returncode=6>"
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)
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transport._returncode = None
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self.assertEqual(
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repr(transport),
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"<TestSubprocessTransport pid=-1 running>"
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)
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transport._pid = None
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transport._returncode = None
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self.assertEqual(
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repr(transport),
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"<TestSubprocessTransport not started>"
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)
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transport.close()
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class SubprocessMixin:
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def test_stdin_stdout(self):
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args = PROGRAM_CAT
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async def run(data):
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proc = await asyncio.create_subprocess_exec(
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*args,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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)
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# feed data
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proc.stdin.write(data)
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await proc.stdin.drain()
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proc.stdin.close()
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# get output and exitcode
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data = await proc.stdout.read()
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exitcode = await proc.wait()
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return (exitcode, data)
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task = run(b'some data')
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task = asyncio.wait_for(task, 60.0)
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exitcode, stdout = self.loop.run_until_complete(task)
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self.assertEqual(exitcode, 0)
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self.assertEqual(stdout, b'some data')
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def test_communicate(self):
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args = PROGRAM_CAT
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async def run(data):
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proc = await asyncio.create_subprocess_exec(
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*args,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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)
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stdout, stderr = await proc.communicate(data)
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return proc.returncode, stdout
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task = run(b'some data')
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task = asyncio.wait_for(task, support.LONG_TIMEOUT)
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exitcode, stdout = self.loop.run_until_complete(task)
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self.assertEqual(exitcode, 0)
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self.assertEqual(stdout, b'some data')
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def test_communicate_none_input(self):
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args = PROGRAM_CAT
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async def run():
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proc = await asyncio.create_subprocess_exec(
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*args,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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)
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stdout, stderr = await proc.communicate()
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return proc.returncode, stdout
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task = run()
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task = asyncio.wait_for(task, support.LONG_TIMEOUT)
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exitcode, stdout = self.loop.run_until_complete(task)
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self.assertEqual(exitcode, 0)
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self.assertEqual(stdout, b'')
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def test_shell(self):
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proc = self.loop.run_until_complete(
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asyncio.create_subprocess_shell('exit 7')
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)
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exitcode = self.loop.run_until_complete(proc.wait())
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self.assertEqual(exitcode, 7)
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def test_start_new_session(self):
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# start the new process in a new session
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proc = self.loop.run_until_complete(
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asyncio.create_subprocess_shell(
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'exit 8',
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start_new_session=True,
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)
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)
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exitcode = self.loop.run_until_complete(proc.wait())
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self.assertEqual(exitcode, 8)
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def test_kill(self):
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args = PROGRAM_BLOCKED
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proc = self.loop.run_until_complete(
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asyncio.create_subprocess_exec(*args)
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)
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proc.kill()
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returncode = self.loop.run_until_complete(proc.wait())
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if sys.platform == 'win32':
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self.assertIsInstance(returncode, int)
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# expect 1 but sometimes get 0
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else:
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self.assertEqual(-signal.SIGKILL, returncode)
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def test_kill_issue43884(self):
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if sys.platform == 'win32':
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blocking_shell_command = f'"{sys.executable}" -c "import time; time.sleep(2)"'
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else:
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blocking_shell_command = 'sleep 1; sleep 1'
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creationflags = 0
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if sys.platform == 'win32':
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from subprocess import CREATE_NEW_PROCESS_GROUP
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# On windows create a new process group so that killing process
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# kills the process and all its children.
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creationflags = CREATE_NEW_PROCESS_GROUP
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proc = self.loop.run_until_complete(
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asyncio.create_subprocess_shell(blocking_shell_command, stdout=asyncio.subprocess.PIPE,
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creationflags=creationflags)
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)
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self.loop.run_until_complete(asyncio.sleep(1))
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if sys.platform == 'win32':
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proc.send_signal(signal.CTRL_BREAK_EVENT)
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# On windows it is an alias of terminate which sets the return code
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proc.kill()
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returncode = self.loop.run_until_complete(proc.wait())
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if sys.platform == 'win32':
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self.assertIsInstance(returncode, int)
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# expect 1 but sometimes get 0
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else:
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self.assertEqual(-signal.SIGKILL, returncode)
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def test_terminate(self):
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args = PROGRAM_BLOCKED
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proc = self.loop.run_until_complete(
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asyncio.create_subprocess_exec(*args)
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)
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proc.terminate()
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returncode = self.loop.run_until_complete(proc.wait())
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if sys.platform == 'win32':
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self.assertIsInstance(returncode, int)
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# expect 1 but sometimes get 0
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else:
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self.assertEqual(-signal.SIGTERM, returncode)
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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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# 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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proc = self.loop.run_until_complete(
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asyncio.create_subprocess_exec(
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*args,
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stdout=subprocess.PIPE,
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)
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)
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async def send_signal(proc):
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# basic synchronization to wait until the program is sleeping
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line = await proc.stdout.readline()
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self.assertEqual(line, b'sleeping\n')
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proc.send_signal(signal.SIGHUP)
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returncode = await proc.wait()
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return returncode
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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 test_stdin_broken_pipe(self):
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# buffer large enough to feed the whole pipe buffer
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large_data = b'x' * support.PIPE_MAX_SIZE
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rfd, wfd = os.pipe()
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self.addCleanup(os.close, rfd)
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self.addCleanup(os.close, wfd)
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if support.MS_WINDOWS:
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handle = msvcrt.get_osfhandle(rfd)
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os.set_handle_inheritable(handle, True)
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code = textwrap.dedent(f'''
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import os, msvcrt
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handle = {handle}
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fd = msvcrt.open_osfhandle(handle, os.O_RDONLY)
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os.read(fd, 1)
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''')
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from subprocess import STARTUPINFO
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startupinfo = STARTUPINFO()
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startupinfo.lpAttributeList = {"handle_list": [handle]}
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kwargs = dict(startupinfo=startupinfo)
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else:
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code = f'import os; fd = {rfd}; os.read(fd, 1)'
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kwargs = dict(pass_fds=(rfd,))
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# the program ends before the stdin can be fed
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proc = self.loop.run_until_complete(
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asyncio.create_subprocess_exec(
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sys.executable, '-c', code,
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stdin=subprocess.PIPE,
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**kwargs
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)
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)
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async def write_stdin(proc, data):
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proc.stdin.write(data)
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# Only exit the child process once the write buffer is filled
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os.write(wfd, b'go')
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await proc.stdin.drain()
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coro = write_stdin(proc, large_data)
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# drain() must raise BrokenPipeError or ConnectionResetError
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with test_utils.disable_logger():
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self.assertRaises((BrokenPipeError, ConnectionResetError),
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self.loop.run_until_complete, coro)
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self.loop.run_until_complete(proc.wait())
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def test_communicate_ignore_broken_pipe(self):
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# buffer large enough to feed the whole pipe buffer
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large_data = b'x' * support.PIPE_MAX_SIZE
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# the program ends before the stdin can be fed
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proc = self.loop.run_until_complete(
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asyncio.create_subprocess_exec(
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sys.executable, '-c', 'pass',
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stdin=subprocess.PIPE,
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)
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)
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# communicate() must ignore BrokenPipeError when feeding stdin
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self.loop.set_exception_handler(lambda loop, msg: None)
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self.loop.run_until_complete(proc.communicate(large_data))
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self.loop.run_until_complete(proc.wait())
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def test_pause_reading(self):
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limit = 10
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size = (limit * 2 + 1)
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async def test_pause_reading():
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code = '\n'.join((
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'import sys',
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'sys.stdout.write("x" * %s)' % size,
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'sys.stdout.flush()',
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))
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connect_read_pipe = self.loop.connect_read_pipe
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async def connect_read_pipe_mock(*args, **kw):
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transport, protocol = await connect_read_pipe(*args, **kw)
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transport.pause_reading = mock.Mock()
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transport.resume_reading = mock.Mock()
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return (transport, protocol)
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self.loop.connect_read_pipe = connect_read_pipe_mock
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proc = await asyncio.create_subprocess_exec(
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sys.executable, '-c', code,
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stdin=asyncio.subprocess.PIPE,
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stdout=asyncio.subprocess.PIPE,
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limit=limit,
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)
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stdout_transport = proc._transport.get_pipe_transport(1)
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stdout, stderr = await proc.communicate()
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# The child process produced more than limit bytes of output,
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# the stream reader transport should pause the protocol to not
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# allocate too much memory.
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return (stdout, stdout_transport)
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# Issue #22685: Ensure that the stream reader pauses the protocol
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# when the child process produces too much data
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stdout, transport = self.loop.run_until_complete(test_pause_reading())
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self.assertEqual(stdout, b'x' * size)
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self.assertTrue(transport.pause_reading.called)
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self.assertTrue(transport.resume_reading.called)
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def test_stdin_not_inheritable(self):
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# asyncio issue #209: stdin must not be inheritable, otherwise
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# the Process.communicate() hangs
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async def len_message(message):
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code = 'import sys; data = sys.stdin.read(); print(len(data))'
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proc = await asyncio.create_subprocess_exec(
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sys.executable, '-c', code,
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stdin=asyncio.subprocess.PIPE,
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stdout=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.PIPE,
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close_fds=False,
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)
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stdout, stderr = await proc.communicate(message)
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exitcode = await proc.wait()
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return (stdout, exitcode)
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output, exitcode = self.loop.run_until_complete(len_message(b'abc'))
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self.assertEqual(output.rstrip(), b'3')
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self.assertEqual(exitcode, 0)
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def test_empty_input(self):
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async def empty_input():
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code = 'import sys; data = sys.stdin.read(); print(len(data))'
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proc = await asyncio.create_subprocess_exec(
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sys.executable, '-c', code,
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stdin=asyncio.subprocess.PIPE,
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stdout=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.PIPE,
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close_fds=False,
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)
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stdout, stderr = await proc.communicate(b'')
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exitcode = await proc.wait()
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return (stdout, exitcode)
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output, exitcode = self.loop.run_until_complete(empty_input())
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self.assertEqual(output.rstrip(), b'0')
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self.assertEqual(exitcode, 0)
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def test_devnull_input(self):
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async def empty_input():
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code = 'import sys; data = sys.stdin.read(); print(len(data))'
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proc = await asyncio.create_subprocess_exec(
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sys.executable, '-c', code,
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stdin=asyncio.subprocess.DEVNULL,
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stdout=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.PIPE,
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close_fds=False,
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)
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stdout, stderr = await proc.communicate()
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exitcode = await proc.wait()
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return (stdout, exitcode)
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output, exitcode = self.loop.run_until_complete(empty_input())
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self.assertEqual(output.rstrip(), b'0')
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self.assertEqual(exitcode, 0)
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def test_devnull_output(self):
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async def empty_output():
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code = 'import sys; data = sys.stdin.read(); print(len(data))'
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proc = await asyncio.create_subprocess_exec(
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sys.executable, '-c', code,
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stdin=asyncio.subprocess.PIPE,
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stdout=asyncio.subprocess.DEVNULL,
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stderr=asyncio.subprocess.PIPE,
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close_fds=False,
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)
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stdout, stderr = await proc.communicate(b"abc")
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exitcode = await proc.wait()
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return (stdout, exitcode)
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output, exitcode = self.loop.run_until_complete(empty_output())
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self.assertEqual(output, None)
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self.assertEqual(exitcode, 0)
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|
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def test_devnull_error(self):
|
|
|
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async def empty_error():
|
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code = 'import sys; data = sys.stdin.read(); print(len(data))'
|
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proc = await asyncio.create_subprocess_exec(
|
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sys.executable, '-c', code,
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stdin=asyncio.subprocess.PIPE,
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stdout=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.DEVNULL,
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close_fds=False,
|
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)
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stdout, stderr = await proc.communicate(b"abc")
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exitcode = await proc.wait()
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return (stderr, exitcode)
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output, exitcode = self.loop.run_until_complete(empty_error())
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self.assertEqual(output, None)
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self.assertEqual(exitcode, 0)
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|
|
@unittest.skipIf(sys.platform not in ('linux', 'android'),
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"Don't have /dev/stdin")
|
|
def test_devstdin_input(self):
|
|
|
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async def devstdin_input(message):
|
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code = 'file = open("/dev/stdin"); data = file.read(); print(len(data))'
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proc = await asyncio.create_subprocess_exec(
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sys.executable, '-c', code,
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stdin=asyncio.subprocess.PIPE,
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stdout=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.PIPE,
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close_fds=False,
|
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)
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stdout, stderr = await proc.communicate(message)
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exitcode = await proc.wait()
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return (stdout, exitcode)
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|
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output, exitcode = self.loop.run_until_complete(devstdin_input(b'abc'))
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self.assertEqual(output.rstrip(), b'3')
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self.assertEqual(exitcode, 0)
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|
|
def test_cancel_process_wait(self):
|
|
# Issue #23140: cancel Process.wait()
|
|
|
|
async def cancel_wait():
|
|
proc = await asyncio.create_subprocess_exec(*PROGRAM_BLOCKED)
|
|
|
|
# Create an internal future waiting on the process exit
|
|
task = self.loop.create_task(proc.wait())
|
|
self.loop.call_soon(task.cancel)
|
|
try:
|
|
await task
|
|
except asyncio.CancelledError:
|
|
pass
|
|
|
|
# Cancel the future
|
|
task.cancel()
|
|
|
|
# Kill the process and wait until it is done
|
|
proc.kill()
|
|
await proc.wait()
|
|
|
|
self.loop.run_until_complete(cancel_wait())
|
|
|
|
def test_cancel_make_subprocess_transport_exec(self):
|
|
|
|
async def cancel_make_transport():
|
|
coro = asyncio.create_subprocess_exec(*PROGRAM_BLOCKED)
|
|
task = self.loop.create_task(coro)
|
|
|
|
self.loop.call_soon(task.cancel)
|
|
try:
|
|
await task
|
|
except asyncio.CancelledError:
|
|
pass
|
|
|
|
# ignore the log:
|
|
# "Exception during subprocess creation, kill the subprocess"
|
|
with test_utils.disable_logger():
|
|
self.loop.run_until_complete(cancel_make_transport())
|
|
|
|
def test_cancel_post_init(self):
|
|
|
|
async def cancel_make_transport():
|
|
coro = self.loop.subprocess_exec(asyncio.SubprocessProtocol,
|
|
*PROGRAM_BLOCKED)
|
|
task = self.loop.create_task(coro)
|
|
|
|
self.loop.call_soon(task.cancel)
|
|
try:
|
|
await task
|
|
except asyncio.CancelledError:
|
|
pass
|
|
|
|
# ignore the log:
|
|
# "Exception during subprocess creation, kill the subprocess"
|
|
with test_utils.disable_logger():
|
|
self.loop.run_until_complete(cancel_make_transport())
|
|
test_utils.run_briefly(self.loop)
|
|
|
|
def test_close_kill_running(self):
|
|
|
|
async def kill_running():
|
|
create = self.loop.subprocess_exec(asyncio.SubprocessProtocol,
|
|
*PROGRAM_BLOCKED)
|
|
transport, protocol = await create
|
|
|
|
kill_called = False
|
|
def kill():
|
|
nonlocal kill_called
|
|
kill_called = True
|
|
orig_kill()
|
|
|
|
proc = transport.get_extra_info('subprocess')
|
|
orig_kill = proc.kill
|
|
proc.kill = kill
|
|
returncode = transport.get_returncode()
|
|
transport.close()
|
|
await asyncio.wait_for(transport._wait(), 5)
|
|
return (returncode, kill_called)
|
|
|
|
# Ignore "Close running child process: kill ..." log
|
|
with test_utils.disable_logger():
|
|
try:
|
|
returncode, killed = self.loop.run_until_complete(
|
|
kill_running()
|
|
)
|
|
except asyncio.TimeoutError:
|
|
self.skipTest(
|
|
"Timeout failure on waiting for subprocess stopping"
|
|
)
|
|
self.assertIsNone(returncode)
|
|
|
|
# transport.close() must kill the process if it is still running
|
|
self.assertTrue(killed)
|
|
test_utils.run_briefly(self.loop)
|
|
|
|
def test_close_dont_kill_finished(self):
|
|
|
|
async def kill_running():
|
|
create = self.loop.subprocess_exec(asyncio.SubprocessProtocol,
|
|
*PROGRAM_BLOCKED)
|
|
transport, protocol = await create
|
|
proc = transport.get_extra_info('subprocess')
|
|
|
|
# kill the process (but asyncio is not notified immediately)
|
|
proc.kill()
|
|
proc.wait()
|
|
|
|
proc.kill = mock.Mock()
|
|
proc_returncode = proc.poll()
|
|
transport_returncode = transport.get_returncode()
|
|
transport.close()
|
|
return (proc_returncode, transport_returncode, proc.kill.called)
|
|
|
|
# Ignore "Unknown child process pid ..." log of SafeChildWatcher,
|
|
# emitted because the test already consumes the exit status:
|
|
# proc.wait()
|
|
with test_utils.disable_logger():
|
|
result = self.loop.run_until_complete(kill_running())
|
|
test_utils.run_briefly(self.loop)
|
|
|
|
proc_returncode, transport_return_code, killed = result
|
|
|
|
self.assertIsNotNone(proc_returncode)
|
|
self.assertIsNone(transport_return_code)
|
|
|
|
# transport.close() must not kill the process if it finished, even if
|
|
# the transport was not notified yet
|
|
self.assertFalse(killed)
|
|
|
|
async def _test_popen_error(self, stdin):
|
|
if sys.platform == 'win32':
|
|
target = 'asyncio.windows_utils.Popen'
|
|
else:
|
|
target = 'subprocess.Popen'
|
|
with mock.patch(target) as popen:
|
|
exc = ZeroDivisionError
|
|
popen.side_effect = exc
|
|
|
|
with warnings.catch_warnings(record=True) as warns:
|
|
with self.assertRaises(exc):
|
|
await asyncio.create_subprocess_exec(
|
|
sys.executable,
|
|
'-c',
|
|
'pass',
|
|
stdin=stdin
|
|
)
|
|
self.assertEqual(warns, [])
|
|
|
|
def test_popen_error(self):
|
|
# Issue #24763: check that the subprocess transport is closed
|
|
# when BaseSubprocessTransport fails
|
|
self.loop.run_until_complete(self._test_popen_error(stdin=None))
|
|
|
|
def test_popen_error_with_stdin_pipe(self):
|
|
# Issue #35721: check that newly created socket pair is closed when
|
|
# Popen fails
|
|
self.loop.run_until_complete(
|
|
self._test_popen_error(stdin=subprocess.PIPE))
|
|
|
|
def test_read_stdout_after_process_exit(self):
|
|
|
|
async def execute():
|
|
code = '\n'.join(['import sys',
|
|
'for _ in range(64):',
|
|
' sys.stdout.write("x" * 4096)',
|
|
'sys.stdout.flush()',
|
|
'sys.exit(1)'])
|
|
|
|
process = await asyncio.create_subprocess_exec(
|
|
sys.executable, '-c', code,
|
|
stdout=asyncio.subprocess.PIPE,
|
|
)
|
|
|
|
while True:
|
|
data = await process.stdout.read(65536)
|
|
if data:
|
|
await asyncio.sleep(0.3)
|
|
else:
|
|
break
|
|
|
|
self.loop.run_until_complete(execute())
|
|
|
|
def test_create_subprocess_exec_text_mode_fails(self):
|
|
async def execute():
|
|
with self.assertRaises(ValueError):
|
|
await subprocess.create_subprocess_exec(sys.executable,
|
|
text=True)
|
|
|
|
with self.assertRaises(ValueError):
|
|
await subprocess.create_subprocess_exec(sys.executable,
|
|
encoding="utf-8")
|
|
|
|
with self.assertRaises(ValueError):
|
|
await subprocess.create_subprocess_exec(sys.executable,
|
|
errors="strict")
|
|
|
|
self.loop.run_until_complete(execute())
|
|
|
|
def test_create_subprocess_shell_text_mode_fails(self):
|
|
|
|
async def execute():
|
|
with self.assertRaises(ValueError):
|
|
await subprocess.create_subprocess_shell(sys.executable,
|
|
text=True)
|
|
|
|
with self.assertRaises(ValueError):
|
|
await subprocess.create_subprocess_shell(sys.executable,
|
|
encoding="utf-8")
|
|
|
|
with self.assertRaises(ValueError):
|
|
await subprocess.create_subprocess_shell(sys.executable,
|
|
errors="strict")
|
|
|
|
self.loop.run_until_complete(execute())
|
|
|
|
def test_create_subprocess_exec_with_path(self):
|
|
async def execute():
|
|
p = await subprocess.create_subprocess_exec(
|
|
os_helper.FakePath(sys.executable), '-c', 'pass')
|
|
await p.wait()
|
|
p = await subprocess.create_subprocess_exec(
|
|
sys.executable, '-c', 'pass', os_helper.FakePath('.'))
|
|
await p.wait()
|
|
|
|
self.assertIsNone(self.loop.run_until_complete(execute()))
|
|
|
|
async def check_stdout_output(self, coro, output):
|
|
proc = await coro
|
|
stdout, _ = await proc.communicate()
|
|
self.assertEqual(stdout, output)
|
|
self.assertEqual(proc.returncode, 0)
|
|
task = asyncio.create_task(proc.wait())
|
|
await asyncio.sleep(0)
|
|
self.assertEqual(task.result(), proc.returncode)
|
|
|
|
def test_create_subprocess_env_shell(self) -> None:
|
|
async def main() -> None:
|
|
executable = sys.executable
|
|
if sys.platform == "win32":
|
|
executable = f'"{executable}"'
|
|
cmd = f'''{executable} -c "import os, sys; sys.stdout.write(os.getenv('FOO'))"'''
|
|
env = os.environ.copy()
|
|
env["FOO"] = "bar"
|
|
proc = await asyncio.create_subprocess_shell(
|
|
cmd, env=env, stdout=subprocess.PIPE
|
|
)
|
|
return proc
|
|
|
|
self.loop.run_until_complete(self.check_stdout_output(main(), b'bar'))
|
|
|
|
def test_create_subprocess_env_exec(self) -> None:
|
|
async def main() -> None:
|
|
cmd = [sys.executable, "-c",
|
|
"import os, sys; sys.stdout.write(os.getenv('FOO'))"]
|
|
env = os.environ.copy()
|
|
env["FOO"] = "baz"
|
|
proc = await asyncio.create_subprocess_exec(
|
|
*cmd, env=env, stdout=subprocess.PIPE
|
|
)
|
|
return proc
|
|
|
|
self.loop.run_until_complete(self.check_stdout_output(main(), b'baz'))
|
|
|
|
|
|
def test_subprocess_concurrent_wait(self) -> None:
|
|
async def main() -> None:
|
|
proc = await asyncio.create_subprocess_exec(
|
|
*PROGRAM_CAT,
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
)
|
|
stdout, _ = await proc.communicate(b'some data')
|
|
self.assertEqual(stdout, b"some data")
|
|
self.assertEqual(proc.returncode, 0)
|
|
self.assertEqual(await asyncio.gather(*[proc.wait() for _ in range(10)]),
|
|
[proc.returncode] * 10)
|
|
|
|
self.loop.run_until_complete(main())
|
|
|
|
def test_subprocess_protocol_events(self):
|
|
# gh-108973: Test that all subprocess protocol methods are called.
|
|
# The protocol methods are not called in a deterministic order.
|
|
# The order depends on the event loop and the operating system.
|
|
events = []
|
|
fds = [1, 2]
|
|
expected = [
|
|
('pipe_data_received', 1, b'stdout'),
|
|
('pipe_data_received', 2, b'stderr'),
|
|
('pipe_connection_lost', 1),
|
|
('pipe_connection_lost', 2),
|
|
'process_exited',
|
|
]
|
|
per_fd_expected = [
|
|
'pipe_data_received',
|
|
'pipe_connection_lost',
|
|
]
|
|
|
|
class MyProtocol(asyncio.SubprocessProtocol):
|
|
def __init__(self, exit_future: asyncio.Future) -> None:
|
|
self.exit_future = exit_future
|
|
|
|
def pipe_data_received(self, fd, data) -> None:
|
|
events.append(('pipe_data_received', fd, data))
|
|
self.exit_maybe()
|
|
|
|
def pipe_connection_lost(self, fd, exc) -> None:
|
|
events.append(('pipe_connection_lost', fd))
|
|
self.exit_maybe()
|
|
|
|
def process_exited(self) -> None:
|
|
events.append('process_exited')
|
|
self.exit_maybe()
|
|
|
|
def exit_maybe(self):
|
|
# Only exit when we got all expected events
|
|
if len(events) >= len(expected):
|
|
self.exit_future.set_result(True)
|
|
|
|
async def main() -> None:
|
|
loop = asyncio.get_running_loop()
|
|
exit_future = asyncio.Future()
|
|
code = 'import sys; sys.stdout.write("stdout"); sys.stderr.write("stderr")'
|
|
transport, _ = await loop.subprocess_exec(lambda: MyProtocol(exit_future),
|
|
sys.executable, '-c', code, stdin=None)
|
|
await exit_future
|
|
transport.close()
|
|
|
|
return events
|
|
|
|
events = self.loop.run_until_complete(main())
|
|
|
|
# First, make sure that we received all events
|
|
self.assertSetEqual(set(events), set(expected))
|
|
|
|
# Second, check order of pipe events per file descriptor
|
|
per_fd_events = {fd: [] for fd in fds}
|
|
for event in events:
|
|
if event == 'process_exited':
|
|
continue
|
|
name, fd = event[:2]
|
|
per_fd_events[fd].append(name)
|
|
|
|
for fd in fds:
|
|
self.assertEqual(per_fd_events[fd], per_fd_expected, (fd, events))
|
|
|
|
def test_subprocess_communicate_stdout(self):
|
|
# See https://github.com/python/cpython/issues/100133
|
|
async def get_command_stdout(cmd, *args):
|
|
proc = await asyncio.create_subprocess_exec(
|
|
cmd, *args, stdout=asyncio.subprocess.PIPE,
|
|
)
|
|
stdout, _ = await proc.communicate()
|
|
return stdout.decode().strip()
|
|
|
|
async def main():
|
|
outputs = [f'foo{i}' for i in range(10)]
|
|
res = await asyncio.gather(*[get_command_stdout(sys.executable, '-c',
|
|
f'print({out!r})') for out in outputs])
|
|
self.assertEqual(res, outputs)
|
|
|
|
self.loop.run_until_complete(main())
|
|
|
|
@unittest.skipIf(sys.platform != 'linux', "Linux only")
|
|
def test_subprocess_send_signal_race(self):
|
|
# See https://github.com/python/cpython/issues/87744
|
|
async def main():
|
|
for _ in range(10):
|
|
proc = await asyncio.create_subprocess_exec('sleep', '0.1')
|
|
await asyncio.sleep(0.1)
|
|
try:
|
|
proc.send_signal(signal.SIGUSR1)
|
|
except ProcessLookupError:
|
|
pass
|
|
self.assertNotEqual(await proc.wait(), 255)
|
|
|
|
self.loop.run_until_complete(main())
|
|
|
|
|
|
if sys.platform != 'win32':
|
|
# Unix
|
|
class SubprocessWatcherMixin(SubprocessMixin):
|
|
|
|
def setUp(self):
|
|
super().setUp()
|
|
self.loop = asyncio.new_event_loop()
|
|
self.set_event_loop(self.loop)
|
|
|
|
def test_watcher_implementation(self):
|
|
loop = self.loop
|
|
watcher = loop._watcher
|
|
if unix_events.can_use_pidfd():
|
|
self.assertIsInstance(watcher, unix_events._PidfdChildWatcher)
|
|
else:
|
|
self.assertIsInstance(watcher, unix_events._ThreadedChildWatcher)
|
|
|
|
|
|
class SubprocessThreadedWatcherTests(SubprocessWatcherMixin,
|
|
test_utils.TestCase):
|
|
def setUp(self):
|
|
self._original_can_use_pidfd = unix_events.can_use_pidfd
|
|
# Force the use of the threaded child watcher
|
|
unix_events.can_use_pidfd = mock.Mock(return_value=False)
|
|
super().setUp()
|
|
|
|
def tearDown(self):
|
|
unix_events.can_use_pidfd = self._original_can_use_pidfd
|
|
return super().tearDown()
|
|
|
|
@unittest.skipUnless(
|
|
unix_events.can_use_pidfd(),
|
|
"operating system does not support pidfds",
|
|
)
|
|
class SubprocessPidfdWatcherTests(SubprocessWatcherMixin,
|
|
test_utils.TestCase):
|
|
|
|
pass
|
|
|
|
else:
|
|
# Windows
|
|
class SubprocessProactorTests(SubprocessMixin, test_utils.TestCase):
|
|
|
|
def setUp(self):
|
|
super().setUp()
|
|
self.loop = asyncio.ProactorEventLoop()
|
|
self.set_event_loop(self.loop)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|