mirror of
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8153b7a57a
Cannot test an empty environment on Windows: Windows requires at least the SYSTEMROOT environment variable to start Python.
1649 lines
66 KiB
Python
1649 lines
66 KiB
Python
import unittest
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from test import support
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import subprocess
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import sys
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import signal
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import io
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import os
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import errno
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import tempfile
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import time
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import re
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import sysconfig
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import warnings
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import select
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import shutil
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try:
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import gc
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except ImportError:
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gc = None
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mswindows = (sys.platform == "win32")
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#
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# Depends on the following external programs: Python
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#
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if mswindows:
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SETBINARY = ('import msvcrt; msvcrt.setmode(sys.stdout.fileno(), '
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'os.O_BINARY);')
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else:
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SETBINARY = ''
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try:
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mkstemp = tempfile.mkstemp
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except AttributeError:
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# tempfile.mkstemp is not available
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def mkstemp():
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"""Replacement for mkstemp, calling mktemp."""
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fname = tempfile.mktemp()
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return os.open(fname, os.O_RDWR|os.O_CREAT), fname
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class BaseTestCase(unittest.TestCase):
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def setUp(self):
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# Try to minimize the number of children we have so this test
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# doesn't crash on some buildbots (Alphas in particular).
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support.reap_children()
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def tearDown(self):
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for inst in subprocess._active:
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inst.wait()
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subprocess._cleanup()
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self.assertFalse(subprocess._active, "subprocess._active not empty")
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def assertStderrEqual(self, stderr, expected, msg=None):
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# In a debug build, stuff like "[6580 refs]" is printed to stderr at
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# shutdown time. That frustrates tests trying to check stderr produced
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# from a spawned Python process.
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actual = support.strip_python_stderr(stderr)
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# strip_python_stderr also strips whitespace, so we do too.
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expected = expected.strip()
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self.assertEqual(actual, expected, msg)
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class ProcessTestCase(BaseTestCase):
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def test_call_seq(self):
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# call() function with sequence argument
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rc = subprocess.call([sys.executable, "-c",
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"import sys; sys.exit(47)"])
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self.assertEqual(rc, 47)
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def test_call_timeout(self):
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# call() function with timeout argument; we want to test that the child
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# process gets killed when the timeout expires. If the child isn't
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# killed, this call will deadlock since subprocess.call waits for the
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# child.
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self.assertRaises(subprocess.TimeoutExpired, subprocess.call,
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[sys.executable, "-c", "while True: pass"],
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timeout=0.1)
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def test_check_call_zero(self):
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# check_call() function with zero return code
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rc = subprocess.check_call([sys.executable, "-c",
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"import sys; sys.exit(0)"])
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self.assertEqual(rc, 0)
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def test_check_call_nonzero(self):
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# check_call() function with non-zero return code
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with self.assertRaises(subprocess.CalledProcessError) as c:
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subprocess.check_call([sys.executable, "-c",
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"import sys; sys.exit(47)"])
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self.assertEqual(c.exception.returncode, 47)
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def test_check_output(self):
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# check_output() function with zero return code
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output = subprocess.check_output(
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[sys.executable, "-c", "print('BDFL')"])
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self.assertIn(b'BDFL', output)
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def test_check_output_nonzero(self):
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# check_call() function with non-zero return code
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with self.assertRaises(subprocess.CalledProcessError) as c:
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subprocess.check_output(
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[sys.executable, "-c", "import sys; sys.exit(5)"])
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self.assertEqual(c.exception.returncode, 5)
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def test_check_output_stderr(self):
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# check_output() function stderr redirected to stdout
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output = subprocess.check_output(
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[sys.executable, "-c", "import sys; sys.stderr.write('BDFL')"],
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stderr=subprocess.STDOUT)
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self.assertIn(b'BDFL', output)
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def test_check_output_stdout_arg(self):
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# check_output() function stderr redirected to stdout
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with self.assertRaises(ValueError) as c:
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output = subprocess.check_output(
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[sys.executable, "-c", "print('will not be run')"],
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stdout=sys.stdout)
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self.fail("Expected ValueError when stdout arg supplied.")
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self.assertIn('stdout', c.exception.args[0])
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def test_check_output_timeout(self):
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# check_output() function with timeout arg
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with self.assertRaises(subprocess.TimeoutExpired) as c:
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output = subprocess.check_output(
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[sys.executable, "-c",
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"import sys, time\n"
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"sys.stdout.write('BDFL')\n"
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"sys.stdout.flush()\n"
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"time.sleep(3600)"],
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# Some heavily loaded buildbots (sparc Debian 3.x) require
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# this much time to start and print.
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timeout=3)
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self.fail("Expected TimeoutExpired.")
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self.assertEqual(c.exception.output, b'BDFL')
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def test_call_kwargs(self):
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# call() function with keyword args
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newenv = os.environ.copy()
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newenv["FRUIT"] = "banana"
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rc = subprocess.call([sys.executable, "-c",
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'import sys, os;'
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'sys.exit(os.getenv("FRUIT")=="banana")'],
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env=newenv)
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self.assertEqual(rc, 1)
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def test_invalid_args(self):
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# Popen() called with invalid arguments should raise TypeError
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# but Popen.__del__ should not complain (issue #12085)
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with support.captured_stderr() as s:
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self.assertRaises(TypeError, subprocess.Popen, invalid_arg_name=1)
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argcount = subprocess.Popen.__init__.__code__.co_argcount
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too_many_args = [0] * (argcount + 1)
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self.assertRaises(TypeError, subprocess.Popen, *too_many_args)
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self.assertEqual(s.getvalue(), '')
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def test_stdin_none(self):
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# .stdin is None when not redirected
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p = subprocess.Popen([sys.executable, "-c", 'print("banana")'],
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stdout=subprocess.PIPE, stderr=subprocess.PIPE)
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self.addCleanup(p.stdout.close)
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self.addCleanup(p.stderr.close)
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p.wait()
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self.assertEqual(p.stdin, None)
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def test_stdout_none(self):
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# .stdout is None when not redirected
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p = subprocess.Popen([sys.executable, "-c",
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'print(" this bit of output is from a '
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'test of stdout in a different '
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'process ...")'],
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stdin=subprocess.PIPE, stderr=subprocess.PIPE)
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self.addCleanup(p.stdin.close)
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self.addCleanup(p.stderr.close)
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p.wait()
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self.assertEqual(p.stdout, None)
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def test_stderr_none(self):
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# .stderr is None when not redirected
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p = subprocess.Popen([sys.executable, "-c", 'print("banana")'],
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stdin=subprocess.PIPE, stdout=subprocess.PIPE)
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self.addCleanup(p.stdout.close)
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self.addCleanup(p.stdin.close)
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p.wait()
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self.assertEqual(p.stderr, None)
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def test_executable_with_cwd(self):
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python_dir = os.path.dirname(os.path.realpath(sys.executable))
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p = subprocess.Popen(["somethingyoudonthave", "-c",
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"import sys; sys.exit(47)"],
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executable=sys.executable, cwd=python_dir)
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p.wait()
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self.assertEqual(p.returncode, 47)
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@unittest.skipIf(sysconfig.is_python_build(),
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"need an installed Python. See #7774")
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def test_executable_without_cwd(self):
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# For a normal installation, it should work without 'cwd'
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# argument. For test runs in the build directory, see #7774.
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p = subprocess.Popen(["somethingyoudonthave", "-c",
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"import sys; sys.exit(47)"],
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executable=sys.executable)
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p.wait()
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self.assertEqual(p.returncode, 47)
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def test_stdin_pipe(self):
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# stdin redirection
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.exit(sys.stdin.read() == "pear")'],
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stdin=subprocess.PIPE)
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p.stdin.write(b"pear")
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p.stdin.close()
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p.wait()
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self.assertEqual(p.returncode, 1)
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def test_stdin_filedes(self):
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# stdin is set to open file descriptor
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tf = tempfile.TemporaryFile()
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self.addCleanup(tf.close)
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d = tf.fileno()
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os.write(d, b"pear")
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os.lseek(d, 0, 0)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.exit(sys.stdin.read() == "pear")'],
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stdin=d)
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p.wait()
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self.assertEqual(p.returncode, 1)
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def test_stdin_fileobj(self):
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# stdin is set to open file object
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tf = tempfile.TemporaryFile()
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self.addCleanup(tf.close)
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tf.write(b"pear")
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tf.seek(0)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.exit(sys.stdin.read() == "pear")'],
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stdin=tf)
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p.wait()
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self.assertEqual(p.returncode, 1)
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def test_stdout_pipe(self):
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# stdout redirection
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stdout.write("orange")'],
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stdout=subprocess.PIPE)
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self.addCleanup(p.stdout.close)
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self.assertEqual(p.stdout.read(), b"orange")
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def test_stdout_filedes(self):
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# stdout is set to open file descriptor
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tf = tempfile.TemporaryFile()
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self.addCleanup(tf.close)
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d = tf.fileno()
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stdout.write("orange")'],
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stdout=d)
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p.wait()
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os.lseek(d, 0, 0)
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self.assertEqual(os.read(d, 1024), b"orange")
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def test_stdout_fileobj(self):
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# stdout is set to open file object
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tf = tempfile.TemporaryFile()
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self.addCleanup(tf.close)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stdout.write("orange")'],
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stdout=tf)
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p.wait()
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tf.seek(0)
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self.assertEqual(tf.read(), b"orange")
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def test_stderr_pipe(self):
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# stderr redirection
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stderr.write("strawberry")'],
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stderr=subprocess.PIPE)
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self.addCleanup(p.stderr.close)
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self.assertStderrEqual(p.stderr.read(), b"strawberry")
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def test_stderr_filedes(self):
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# stderr is set to open file descriptor
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tf = tempfile.TemporaryFile()
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self.addCleanup(tf.close)
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d = tf.fileno()
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stderr.write("strawberry")'],
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stderr=d)
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p.wait()
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os.lseek(d, 0, 0)
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self.assertStderrEqual(os.read(d, 1024), b"strawberry")
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def test_stderr_fileobj(self):
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# stderr is set to open file object
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tf = tempfile.TemporaryFile()
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self.addCleanup(tf.close)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stderr.write("strawberry")'],
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stderr=tf)
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p.wait()
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tf.seek(0)
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self.assertStderrEqual(tf.read(), b"strawberry")
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def test_stdout_stderr_pipe(self):
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# capture stdout and stderr to the same pipe
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p = subprocess.Popen([sys.executable, "-c",
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'import sys;'
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'sys.stdout.write("apple");'
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'sys.stdout.flush();'
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'sys.stderr.write("orange")'],
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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self.addCleanup(p.stdout.close)
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self.assertStderrEqual(p.stdout.read(), b"appleorange")
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def test_stdout_stderr_file(self):
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# capture stdout and stderr to the same open file
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tf = tempfile.TemporaryFile()
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self.addCleanup(tf.close)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys;'
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'sys.stdout.write("apple");'
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'sys.stdout.flush();'
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'sys.stderr.write("orange")'],
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stdout=tf,
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stderr=tf)
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p.wait()
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tf.seek(0)
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self.assertStderrEqual(tf.read(), b"appleorange")
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def test_stdout_filedes_of_stdout(self):
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# stdout is set to 1 (#1531862).
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cmd = r"import sys, os; sys.exit(os.write(sys.stdout.fileno(), b'.\n'))"
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rc = subprocess.call([sys.executable, "-c", cmd], stdout=1)
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self.assertEqual(rc, 2)
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def test_stdout_devnull(self):
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p = subprocess.Popen([sys.executable, "-c",
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'for i in range(10240):'
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'print("x" * 1024)'],
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stdout=subprocess.DEVNULL)
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p.wait()
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self.assertEqual(p.stdout, None)
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def test_stderr_devnull(self):
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p = subprocess.Popen([sys.executable, "-c",
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'import sys\n'
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'for i in range(10240):'
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'sys.stderr.write("x" * 1024)'],
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stderr=subprocess.DEVNULL)
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p.wait()
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self.assertEqual(p.stderr, None)
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def test_stdin_devnull(self):
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p = subprocess.Popen([sys.executable, "-c",
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'import sys;'
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'sys.stdin.read(1)'],
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stdin=subprocess.DEVNULL)
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p.wait()
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self.assertEqual(p.stdin, None)
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def test_cwd(self):
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tmpdir = tempfile.gettempdir()
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# We cannot use os.path.realpath to canonicalize the path,
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# since it doesn't expand Tru64 {memb} strings. See bug 1063571.
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cwd = os.getcwd()
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os.chdir(tmpdir)
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tmpdir = os.getcwd()
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os.chdir(cwd)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;'
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'sys.stdout.write(os.getcwd())'],
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stdout=subprocess.PIPE,
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cwd=tmpdir)
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self.addCleanup(p.stdout.close)
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normcase = os.path.normcase
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self.assertEqual(normcase(p.stdout.read().decode("utf-8")),
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normcase(tmpdir))
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def test_env(self):
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newenv = os.environ.copy()
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newenv["FRUIT"] = "orange"
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with subprocess.Popen([sys.executable, "-c",
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'import sys,os;'
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'sys.stdout.write(os.getenv("FRUIT"))'],
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stdout=subprocess.PIPE,
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env=newenv) as p:
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stdout, stderr = p.communicate()
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self.assertEqual(stdout, b"orange")
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|
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# Windows requires at least the SYSTEMROOT environment variable to start
|
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# Python
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@unittest.skipIf(sys.platform == 'win32',
|
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'cannot test an empty env on Windows')
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@unittest.skipIf(sysconfig.get_config_var('Py_ENABLE_SHARED') is not None,
|
|
'the python library cannot be loaded '
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'with an empty environment')
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def test_empty_env(self):
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with subprocess.Popen([sys.executable, "-c",
|
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'import os; '
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'print(list(os.environ.keys()))'],
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stdout=subprocess.PIPE,
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env={}) as p:
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stdout, stderr = p.communicate()
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self.assertIn(stdout.strip(),
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(b"[]",
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# Mac OS X adds __CF_USER_TEXT_ENCODING variable to an empty
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# environment
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b"['__CF_USER_TEXT_ENCODING']"))
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|
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def test_communicate_stdin(self):
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p = subprocess.Popen([sys.executable, "-c",
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'import sys;'
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'sys.exit(sys.stdin.read() == "pear")'],
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stdin=subprocess.PIPE)
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p.communicate(b"pear")
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self.assertEqual(p.returncode, 1)
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def test_communicate_stdout(self):
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stdout.write("pineapple")'],
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stdout=subprocess.PIPE)
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(stdout, stderr) = p.communicate()
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self.assertEqual(stdout, b"pineapple")
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self.assertEqual(stderr, None)
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def test_communicate_stderr(self):
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stderr.write("pineapple")'],
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stderr=subprocess.PIPE)
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(stdout, stderr) = p.communicate()
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self.assertEqual(stdout, None)
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self.assertStderrEqual(stderr, b"pineapple")
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|
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def test_communicate(self):
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;'
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'sys.stderr.write("pineapple");'
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'sys.stdout.write(sys.stdin.read())'],
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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self.addCleanup(p.stdout.close)
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self.addCleanup(p.stderr.close)
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self.addCleanup(p.stdin.close)
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(stdout, stderr) = p.communicate(b"banana")
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self.assertEqual(stdout, b"banana")
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self.assertStderrEqual(stderr, b"pineapple")
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|
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def test_communicate_timeout(self):
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os,time;'
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'sys.stderr.write("pineapple\\n");'
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'time.sleep(1);'
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'sys.stderr.write("pear\\n");'
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'sys.stdout.write(sys.stdin.read())'],
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universal_newlines=True,
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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self.assertRaises(subprocess.TimeoutExpired, p.communicate, "banana",
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timeout=0.3)
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# Make sure we can keep waiting for it, and that we get the whole output
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# after it completes.
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(stdout, stderr) = p.communicate()
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self.assertEqual(stdout, "banana")
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|
self.assertStderrEqual(stderr.encode(), b"pineapple\npear\n")
|
|
|
|
def test_communicate_timeout_large_ouput(self):
|
|
# Test a expring timeout while the child is outputting lots of data.
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys,os,time;'
|
|
'sys.stdout.write("a" * (64 * 1024));'
|
|
'time.sleep(0.2);'
|
|
'sys.stdout.write("a" * (64 * 1024));'
|
|
'time.sleep(0.2);'
|
|
'sys.stdout.write("a" * (64 * 1024));'
|
|
'time.sleep(0.2);'
|
|
'sys.stdout.write("a" * (64 * 1024));'],
|
|
stdout=subprocess.PIPE)
|
|
self.assertRaises(subprocess.TimeoutExpired, p.communicate, timeout=0.4)
|
|
(stdout, _) = p.communicate()
|
|
self.assertEqual(len(stdout), 4 * 64 * 1024)
|
|
|
|
# Test for the fd leak reported in http://bugs.python.org/issue2791.
|
|
def test_communicate_pipe_fd_leak(self):
|
|
for stdin_pipe in (False, True):
|
|
for stdout_pipe in (False, True):
|
|
for stderr_pipe in (False, True):
|
|
options = {}
|
|
if stdin_pipe:
|
|
options['stdin'] = subprocess.PIPE
|
|
if stdout_pipe:
|
|
options['stdout'] = subprocess.PIPE
|
|
if stderr_pipe:
|
|
options['stderr'] = subprocess.PIPE
|
|
if not options:
|
|
continue
|
|
p = subprocess.Popen((sys.executable, "-c", "pass"), **options)
|
|
p.communicate()
|
|
if p.stdin is not None:
|
|
self.assertTrue(p.stdin.closed)
|
|
if p.stdout is not None:
|
|
self.assertTrue(p.stdout.closed)
|
|
if p.stderr is not None:
|
|
self.assertTrue(p.stderr.closed)
|
|
|
|
def test_communicate_returns(self):
|
|
# communicate() should return None if no redirection is active
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
"import sys; sys.exit(47)"])
|
|
(stdout, stderr) = p.communicate()
|
|
self.assertEqual(stdout, None)
|
|
self.assertEqual(stderr, None)
|
|
|
|
def test_communicate_pipe_buf(self):
|
|
# communicate() with writes larger than pipe_buf
|
|
# This test will probably deadlock rather than fail, if
|
|
# communicate() does not work properly.
|
|
x, y = os.pipe()
|
|
os.close(x)
|
|
os.close(y)
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys,os;'
|
|
'sys.stdout.write(sys.stdin.read(47));'
|
|
'sys.stderr.write("x" * %d);'
|
|
'sys.stdout.write(sys.stdin.read())' %
|
|
support.PIPE_MAX_SIZE],
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
self.addCleanup(p.stdout.close)
|
|
self.addCleanup(p.stderr.close)
|
|
self.addCleanup(p.stdin.close)
|
|
string_to_write = b"a" * support.PIPE_MAX_SIZE
|
|
(stdout, stderr) = p.communicate(string_to_write)
|
|
self.assertEqual(stdout, string_to_write)
|
|
|
|
def test_writes_before_communicate(self):
|
|
# stdin.write before communicate()
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys,os;'
|
|
'sys.stdout.write(sys.stdin.read())'],
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
self.addCleanup(p.stdout.close)
|
|
self.addCleanup(p.stderr.close)
|
|
self.addCleanup(p.stdin.close)
|
|
p.stdin.write(b"banana")
|
|
(stdout, stderr) = p.communicate(b"split")
|
|
self.assertEqual(stdout, b"bananasplit")
|
|
self.assertStderrEqual(stderr, b"")
|
|
|
|
def test_universal_newlines(self):
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys,os;' + SETBINARY +
|
|
'sys.stdout.write("line1\\n");'
|
|
'sys.stdout.flush();'
|
|
'sys.stdout.write("line2\\n");'
|
|
'sys.stdout.flush();'
|
|
'sys.stdout.write("line3\\r\\n");'
|
|
'sys.stdout.flush();'
|
|
'sys.stdout.write("line4\\r");'
|
|
'sys.stdout.flush();'
|
|
'sys.stdout.write("\\nline5");'
|
|
'sys.stdout.flush();'
|
|
'sys.stdout.write("\\nline6");'],
|
|
stdout=subprocess.PIPE,
|
|
universal_newlines=1)
|
|
self.addCleanup(p.stdout.close)
|
|
stdout = p.stdout.read()
|
|
self.assertEqual(stdout, "line1\nline2\nline3\nline4\nline5\nline6")
|
|
|
|
def test_universal_newlines_communicate(self):
|
|
# universal newlines through communicate()
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys,os;' + SETBINARY +
|
|
'sys.stdout.write("line1\\n");'
|
|
'sys.stdout.flush();'
|
|
'sys.stdout.write("line2\\n");'
|
|
'sys.stdout.flush();'
|
|
'sys.stdout.write("line3\\r\\n");'
|
|
'sys.stdout.flush();'
|
|
'sys.stdout.write("line4\\r");'
|
|
'sys.stdout.flush();'
|
|
'sys.stdout.write("\\nline5");'
|
|
'sys.stdout.flush();'
|
|
'sys.stdout.write("\\nline6");'],
|
|
stdout=subprocess.PIPE, stderr=subprocess.PIPE,
|
|
universal_newlines=1)
|
|
self.addCleanup(p.stdout.close)
|
|
self.addCleanup(p.stderr.close)
|
|
(stdout, stderr) = p.communicate()
|
|
self.assertEqual(stdout, "line1\nline2\nline3\nline4\nline5\nline6")
|
|
|
|
def test_no_leaking(self):
|
|
# Make sure we leak no resources
|
|
if not mswindows:
|
|
max_handles = 1026 # too much for most UNIX systems
|
|
else:
|
|
max_handles = 2050 # too much for (at least some) Windows setups
|
|
handles = []
|
|
tmpdir = tempfile.mkdtemp()
|
|
try:
|
|
for i in range(max_handles):
|
|
try:
|
|
tmpfile = os.path.join(tmpdir, support.TESTFN)
|
|
handles.append(os.open(tmpfile, os.O_WRONLY|os.O_CREAT))
|
|
except OSError as e:
|
|
if e.errno != errno.EMFILE:
|
|
raise
|
|
break
|
|
else:
|
|
self.skipTest("failed to reach the file descriptor limit "
|
|
"(tried %d)" % max_handles)
|
|
# Close a couple of them (should be enough for a subprocess)
|
|
for i in range(10):
|
|
os.close(handles.pop())
|
|
# Loop creating some subprocesses. If one of them leaks some fds,
|
|
# the next loop iteration will fail by reaching the max fd limit.
|
|
for i in range(15):
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
"import sys;"
|
|
"sys.stdout.write(sys.stdin.read())"],
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
data = p.communicate(b"lime")[0]
|
|
self.assertEqual(data, b"lime")
|
|
finally:
|
|
for h in handles:
|
|
os.close(h)
|
|
shutil.rmtree(tmpdir)
|
|
|
|
def test_list2cmdline(self):
|
|
self.assertEqual(subprocess.list2cmdline(['a b c', 'd', 'e']),
|
|
'"a b c" d e')
|
|
self.assertEqual(subprocess.list2cmdline(['ab"c', '\\', 'd']),
|
|
'ab\\"c \\ d')
|
|
self.assertEqual(subprocess.list2cmdline(['ab"c', ' \\', 'd']),
|
|
'ab\\"c " \\\\" d')
|
|
self.assertEqual(subprocess.list2cmdline(['a\\\\\\b', 'de fg', 'h']),
|
|
'a\\\\\\b "de fg" h')
|
|
self.assertEqual(subprocess.list2cmdline(['a\\"b', 'c', 'd']),
|
|
'a\\\\\\"b c d')
|
|
self.assertEqual(subprocess.list2cmdline(['a\\\\b c', 'd', 'e']),
|
|
'"a\\\\b c" d e')
|
|
self.assertEqual(subprocess.list2cmdline(['a\\\\b\\ c', 'd', 'e']),
|
|
'"a\\\\b\\ c" d e')
|
|
self.assertEqual(subprocess.list2cmdline(['ab', '']),
|
|
'ab ""')
|
|
|
|
|
|
def test_poll(self):
|
|
p = subprocess.Popen([sys.executable,
|
|
"-c", "import time; time.sleep(1)"])
|
|
count = 0
|
|
while p.poll() is None:
|
|
time.sleep(0.1)
|
|
count += 1
|
|
# We expect that the poll loop probably went around about 10 times,
|
|
# but, based on system scheduling we can't control, it's possible
|
|
# poll() never returned None. It "should be" very rare that it
|
|
# didn't go around at least twice.
|
|
self.assertGreaterEqual(count, 2)
|
|
# Subsequent invocations should just return the returncode
|
|
self.assertEqual(p.poll(), 0)
|
|
|
|
|
|
def test_wait(self):
|
|
p = subprocess.Popen([sys.executable,
|
|
"-c", "import time; time.sleep(2)"])
|
|
self.assertEqual(p.wait(), 0)
|
|
# Subsequent invocations should just return the returncode
|
|
self.assertEqual(p.wait(), 0)
|
|
|
|
def test_wait_timeout(self):
|
|
p = subprocess.Popen([sys.executable,
|
|
"-c", "import time; time.sleep(0.1)"])
|
|
with self.assertRaises(subprocess.TimeoutExpired) as c:
|
|
p.wait(timeout=0.01)
|
|
self.assertIn("0.01", str(c.exception)) # For coverage of __str__.
|
|
# Some heavily loaded buildbots (sparc Debian 3.x) require this much
|
|
# time to start.
|
|
self.assertEqual(p.wait(timeout=3), 0)
|
|
|
|
def test_invalid_bufsize(self):
|
|
# an invalid type of the bufsize argument should raise
|
|
# TypeError.
|
|
with self.assertRaises(TypeError):
|
|
subprocess.Popen([sys.executable, "-c", "pass"], "orange")
|
|
|
|
def test_bufsize_is_none(self):
|
|
# bufsize=None should be the same as bufsize=0.
|
|
p = subprocess.Popen([sys.executable, "-c", "pass"], None)
|
|
self.assertEqual(p.wait(), 0)
|
|
# Again with keyword arg
|
|
p = subprocess.Popen([sys.executable, "-c", "pass"], bufsize=None)
|
|
self.assertEqual(p.wait(), 0)
|
|
|
|
def test_leaking_fds_on_error(self):
|
|
# see bug #5179: Popen leaks file descriptors to PIPEs if
|
|
# the child fails to execute; this will eventually exhaust
|
|
# the maximum number of open fds. 1024 seems a very common
|
|
# value for that limit, but Windows has 2048, so we loop
|
|
# 1024 times (each call leaked two fds).
|
|
for i in range(1024):
|
|
# Windows raises IOError. Others raise OSError.
|
|
with self.assertRaises(EnvironmentError) as c:
|
|
subprocess.Popen(['nonexisting_i_hope'],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
# ignore errors that indicate the command was not found
|
|
if c.exception.errno not in (errno.ENOENT, errno.EACCES):
|
|
raise c.exception
|
|
|
|
def test_issue8780(self):
|
|
# Ensure that stdout is inherited from the parent
|
|
# if stdout=PIPE is not used
|
|
code = ';'.join((
|
|
'import subprocess, sys',
|
|
'retcode = subprocess.call('
|
|
"[sys.executable, '-c', 'print(\"Hello World!\")'])",
|
|
'assert retcode == 0'))
|
|
output = subprocess.check_output([sys.executable, '-c', code])
|
|
self.assertTrue(output.startswith(b'Hello World!'), ascii(output))
|
|
|
|
def test_handles_closed_on_exception(self):
|
|
# If CreateProcess exits with an error, ensure the
|
|
# duplicate output handles are released
|
|
ifhandle, ifname = mkstemp()
|
|
ofhandle, ofname = mkstemp()
|
|
efhandle, efname = mkstemp()
|
|
try:
|
|
subprocess.Popen (["*"], stdin=ifhandle, stdout=ofhandle,
|
|
stderr=efhandle)
|
|
except OSError:
|
|
os.close(ifhandle)
|
|
os.remove(ifname)
|
|
os.close(ofhandle)
|
|
os.remove(ofname)
|
|
os.close(efhandle)
|
|
os.remove(efname)
|
|
self.assertFalse(os.path.exists(ifname))
|
|
self.assertFalse(os.path.exists(ofname))
|
|
self.assertFalse(os.path.exists(efname))
|
|
|
|
def test_communicate_epipe(self):
|
|
# Issue 10963: communicate() should hide EPIPE
|
|
p = subprocess.Popen([sys.executable, "-c", 'pass'],
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
self.addCleanup(p.stdout.close)
|
|
self.addCleanup(p.stderr.close)
|
|
self.addCleanup(p.stdin.close)
|
|
p.communicate(b"x" * 2**20)
|
|
|
|
def test_communicate_epipe_only_stdin(self):
|
|
# Issue 10963: communicate() should hide EPIPE
|
|
p = subprocess.Popen([sys.executable, "-c", 'pass'],
|
|
stdin=subprocess.PIPE)
|
|
self.addCleanup(p.stdin.close)
|
|
time.sleep(2)
|
|
p.communicate(b"x" * 2**20)
|
|
|
|
|
|
# context manager
|
|
class _SuppressCoreFiles(object):
|
|
"""Try to prevent core files from being created."""
|
|
old_limit = None
|
|
|
|
def __enter__(self):
|
|
"""Try to save previous ulimit, then set it to (0, 0)."""
|
|
try:
|
|
import resource
|
|
self.old_limit = resource.getrlimit(resource.RLIMIT_CORE)
|
|
resource.setrlimit(resource.RLIMIT_CORE, (0, 0))
|
|
except (ImportError, ValueError, resource.error):
|
|
pass
|
|
|
|
if sys.platform == 'darwin':
|
|
# Check if the 'Crash Reporter' on OSX was configured
|
|
# in 'Developer' mode and warn that it will get triggered
|
|
# when it is.
|
|
#
|
|
# This assumes that this context manager is used in tests
|
|
# that might trigger the next manager.
|
|
value = subprocess.Popen(['/usr/bin/defaults', 'read',
|
|
'com.apple.CrashReporter', 'DialogType'],
|
|
stdout=subprocess.PIPE).communicate()[0]
|
|
if value.strip() == b'developer':
|
|
print("this tests triggers the Crash Reporter, "
|
|
"that is intentional", end='')
|
|
sys.stdout.flush()
|
|
|
|
def __exit__(self, *args):
|
|
"""Return core file behavior to default."""
|
|
if self.old_limit is None:
|
|
return
|
|
try:
|
|
import resource
|
|
resource.setrlimit(resource.RLIMIT_CORE, self.old_limit)
|
|
except (ImportError, ValueError, resource.error):
|
|
pass
|
|
|
|
|
|
@unittest.skipIf(mswindows, "POSIX specific tests")
|
|
class POSIXProcessTestCase(BaseTestCase):
|
|
|
|
def test_exceptions(self):
|
|
nonexistent_dir = "/_this/pa.th/does/not/exist"
|
|
try:
|
|
os.chdir(nonexistent_dir)
|
|
except OSError as e:
|
|
# This avoids hard coding the errno value or the OS perror()
|
|
# string and instead capture the exception that we want to see
|
|
# below for comparison.
|
|
desired_exception = e
|
|
desired_exception.strerror += ': ' + repr(sys.executable)
|
|
else:
|
|
self.fail("chdir to nonexistant directory %s succeeded." %
|
|
nonexistent_dir)
|
|
|
|
# Error in the child re-raised in the parent.
|
|
try:
|
|
p = subprocess.Popen([sys.executable, "-c", ""],
|
|
cwd=nonexistent_dir)
|
|
except OSError as e:
|
|
# Test that the child process chdir failure actually makes
|
|
# it up to the parent process as the correct exception.
|
|
self.assertEqual(desired_exception.errno, e.errno)
|
|
self.assertEqual(desired_exception.strerror, e.strerror)
|
|
else:
|
|
self.fail("Expected OSError: %s" % desired_exception)
|
|
|
|
def test_restore_signals(self):
|
|
# Code coverage for both values of restore_signals to make sure it
|
|
# at least does not blow up.
|
|
# A test for behavior would be complex. Contributions welcome.
|
|
subprocess.call([sys.executable, "-c", ""], restore_signals=True)
|
|
subprocess.call([sys.executable, "-c", ""], restore_signals=False)
|
|
|
|
def test_start_new_session(self):
|
|
# For code coverage of calling setsid(). We don't care if we get an
|
|
# EPERM error from it depending on the test execution environment, that
|
|
# still indicates that it was called.
|
|
try:
|
|
output = subprocess.check_output(
|
|
[sys.executable, "-c",
|
|
"import os; print(os.getpgid(os.getpid()))"],
|
|
start_new_session=True)
|
|
except OSError as e:
|
|
if e.errno != errno.EPERM:
|
|
raise
|
|
else:
|
|
parent_pgid = os.getpgid(os.getpid())
|
|
child_pgid = int(output)
|
|
self.assertNotEqual(parent_pgid, child_pgid)
|
|
|
|
def test_run_abort(self):
|
|
# returncode handles signal termination
|
|
with _SuppressCoreFiles():
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import os; os.abort()'])
|
|
p.wait()
|
|
self.assertEqual(-p.returncode, signal.SIGABRT)
|
|
|
|
def test_preexec(self):
|
|
# DISCLAIMER: Setting environment variables is *not* a good use
|
|
# of a preexec_fn. This is merely a test.
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys,os;'
|
|
'sys.stdout.write(os.getenv("FRUIT"))'],
|
|
stdout=subprocess.PIPE,
|
|
preexec_fn=lambda: os.putenv("FRUIT", "apple"))
|
|
self.addCleanup(p.stdout.close)
|
|
self.assertEqual(p.stdout.read(), b"apple")
|
|
|
|
def test_preexec_exception(self):
|
|
def raise_it():
|
|
raise ValueError("What if two swallows carried a coconut?")
|
|
try:
|
|
p = subprocess.Popen([sys.executable, "-c", ""],
|
|
preexec_fn=raise_it)
|
|
except RuntimeError as e:
|
|
self.assertTrue(
|
|
subprocess._posixsubprocess,
|
|
"Expected a ValueError from the preexec_fn")
|
|
except ValueError as e:
|
|
self.assertIn("coconut", e.args[0])
|
|
else:
|
|
self.fail("Exception raised by preexec_fn did not make it "
|
|
"to the parent process.")
|
|
|
|
@unittest.skipUnless(gc, "Requires a gc module.")
|
|
def test_preexec_gc_module_failure(self):
|
|
# This tests the code that disables garbage collection if the child
|
|
# process will execute any Python.
|
|
def raise_runtime_error():
|
|
raise RuntimeError("this shouldn't escape")
|
|
enabled = gc.isenabled()
|
|
orig_gc_disable = gc.disable
|
|
orig_gc_isenabled = gc.isenabled
|
|
try:
|
|
gc.disable()
|
|
self.assertFalse(gc.isenabled())
|
|
subprocess.call([sys.executable, '-c', ''],
|
|
preexec_fn=lambda: None)
|
|
self.assertFalse(gc.isenabled(),
|
|
"Popen enabled gc when it shouldn't.")
|
|
|
|
gc.enable()
|
|
self.assertTrue(gc.isenabled())
|
|
subprocess.call([sys.executable, '-c', ''],
|
|
preexec_fn=lambda: None)
|
|
self.assertTrue(gc.isenabled(), "Popen left gc disabled.")
|
|
|
|
gc.disable = raise_runtime_error
|
|
self.assertRaises(RuntimeError, subprocess.Popen,
|
|
[sys.executable, '-c', ''],
|
|
preexec_fn=lambda: None)
|
|
|
|
del gc.isenabled # force an AttributeError
|
|
self.assertRaises(AttributeError, subprocess.Popen,
|
|
[sys.executable, '-c', ''],
|
|
preexec_fn=lambda: None)
|
|
finally:
|
|
gc.disable = orig_gc_disable
|
|
gc.isenabled = orig_gc_isenabled
|
|
if not enabled:
|
|
gc.disable()
|
|
|
|
def test_args_string(self):
|
|
# args is a string
|
|
fd, fname = mkstemp()
|
|
# reopen in text mode
|
|
with open(fd, "w", errors="surrogateescape") as fobj:
|
|
fobj.write("#!/bin/sh\n")
|
|
fobj.write("exec '%s' -c 'import sys; sys.exit(47)'\n" %
|
|
sys.executable)
|
|
os.chmod(fname, 0o700)
|
|
p = subprocess.Popen(fname)
|
|
p.wait()
|
|
os.remove(fname)
|
|
self.assertEqual(p.returncode, 47)
|
|
|
|
def test_invalid_args(self):
|
|
# invalid arguments should raise ValueError
|
|
self.assertRaises(ValueError, subprocess.call,
|
|
[sys.executable, "-c",
|
|
"import sys; sys.exit(47)"],
|
|
startupinfo=47)
|
|
self.assertRaises(ValueError, subprocess.call,
|
|
[sys.executable, "-c",
|
|
"import sys; sys.exit(47)"],
|
|
creationflags=47)
|
|
|
|
def test_shell_sequence(self):
|
|
# Run command through the shell (sequence)
|
|
newenv = os.environ.copy()
|
|
newenv["FRUIT"] = "apple"
|
|
p = subprocess.Popen(["echo $FRUIT"], shell=1,
|
|
stdout=subprocess.PIPE,
|
|
env=newenv)
|
|
self.addCleanup(p.stdout.close)
|
|
self.assertEqual(p.stdout.read().strip(b" \t\r\n\f"), b"apple")
|
|
|
|
def test_shell_string(self):
|
|
# Run command through the shell (string)
|
|
newenv = os.environ.copy()
|
|
newenv["FRUIT"] = "apple"
|
|
p = subprocess.Popen("echo $FRUIT", shell=1,
|
|
stdout=subprocess.PIPE,
|
|
env=newenv)
|
|
self.addCleanup(p.stdout.close)
|
|
self.assertEqual(p.stdout.read().strip(b" \t\r\n\f"), b"apple")
|
|
|
|
def test_call_string(self):
|
|
# call() function with string argument on UNIX
|
|
fd, fname = mkstemp()
|
|
# reopen in text mode
|
|
with open(fd, "w", errors="surrogateescape") as fobj:
|
|
fobj.write("#!/bin/sh\n")
|
|
fobj.write("exec '%s' -c 'import sys; sys.exit(47)'\n" %
|
|
sys.executable)
|
|
os.chmod(fname, 0o700)
|
|
rc = subprocess.call(fname)
|
|
os.remove(fname)
|
|
self.assertEqual(rc, 47)
|
|
|
|
def test_specific_shell(self):
|
|
# Issue #9265: Incorrect name passed as arg[0].
|
|
shells = []
|
|
for prefix in ['/bin', '/usr/bin/', '/usr/local/bin']:
|
|
for name in ['bash', 'ksh']:
|
|
sh = os.path.join(prefix, name)
|
|
if os.path.isfile(sh):
|
|
shells.append(sh)
|
|
if not shells: # Will probably work for any shell but csh.
|
|
self.skipTest("bash or ksh required for this test")
|
|
sh = '/bin/sh'
|
|
if os.path.isfile(sh) and not os.path.islink(sh):
|
|
# Test will fail if /bin/sh is a symlink to csh.
|
|
shells.append(sh)
|
|
for sh in shells:
|
|
p = subprocess.Popen("echo $0", executable=sh, shell=True,
|
|
stdout=subprocess.PIPE)
|
|
self.addCleanup(p.stdout.close)
|
|
self.assertEqual(p.stdout.read().strip(), bytes(sh, 'ascii'))
|
|
|
|
def _kill_process(self, method, *args):
|
|
# Do not inherit file handles from the parent.
|
|
# It should fix failures on some platforms.
|
|
p = subprocess.Popen([sys.executable, "-c", """if 1:
|
|
import sys, time
|
|
sys.stdout.write('x\\n')
|
|
sys.stdout.flush()
|
|
time.sleep(30)
|
|
"""],
|
|
close_fds=True,
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
# Wait for the interpreter to be completely initialized before
|
|
# sending any signal.
|
|
p.stdout.read(1)
|
|
getattr(p, method)(*args)
|
|
return p
|
|
|
|
def test_send_signal(self):
|
|
p = self._kill_process('send_signal', signal.SIGINT)
|
|
_, stderr = p.communicate()
|
|
self.assertIn(b'KeyboardInterrupt', stderr)
|
|
self.assertNotEqual(p.wait(), 0)
|
|
|
|
def test_kill(self):
|
|
p = self._kill_process('kill')
|
|
_, stderr = p.communicate()
|
|
self.assertStderrEqual(stderr, b'')
|
|
self.assertEqual(p.wait(), -signal.SIGKILL)
|
|
|
|
def test_terminate(self):
|
|
p = self._kill_process('terminate')
|
|
_, stderr = p.communicate()
|
|
self.assertStderrEqual(stderr, b'')
|
|
self.assertEqual(p.wait(), -signal.SIGTERM)
|
|
|
|
def check_close_std_fds(self, fds):
|
|
# Issue #9905: test that subprocess pipes still work properly with
|
|
# some standard fds closed
|
|
stdin = 0
|
|
newfds = []
|
|
for a in fds:
|
|
b = os.dup(a)
|
|
newfds.append(b)
|
|
if a == 0:
|
|
stdin = b
|
|
try:
|
|
for fd in fds:
|
|
os.close(fd)
|
|
out, err = subprocess.Popen([sys.executable, "-c",
|
|
'import sys;'
|
|
'sys.stdout.write("apple");'
|
|
'sys.stdout.flush();'
|
|
'sys.stderr.write("orange")'],
|
|
stdin=stdin,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE).communicate()
|
|
err = support.strip_python_stderr(err)
|
|
self.assertEqual((out, err), (b'apple', b'orange'))
|
|
finally:
|
|
for b, a in zip(newfds, fds):
|
|
os.dup2(b, a)
|
|
for b in newfds:
|
|
os.close(b)
|
|
|
|
def test_close_fd_0(self):
|
|
self.check_close_std_fds([0])
|
|
|
|
def test_close_fd_1(self):
|
|
self.check_close_std_fds([1])
|
|
|
|
def test_close_fd_2(self):
|
|
self.check_close_std_fds([2])
|
|
|
|
def test_close_fds_0_1(self):
|
|
self.check_close_std_fds([0, 1])
|
|
|
|
def test_close_fds_0_2(self):
|
|
self.check_close_std_fds([0, 2])
|
|
|
|
def test_close_fds_1_2(self):
|
|
self.check_close_std_fds([1, 2])
|
|
|
|
def test_close_fds_0_1_2(self):
|
|
# Issue #10806: test that subprocess pipes still work properly with
|
|
# all standard fds closed.
|
|
self.check_close_std_fds([0, 1, 2])
|
|
|
|
def test_remapping_std_fds(self):
|
|
# open up some temporary files
|
|
temps = [mkstemp() for i in range(3)]
|
|
try:
|
|
temp_fds = [fd for fd, fname in temps]
|
|
|
|
# unlink the files -- we won't need to reopen them
|
|
for fd, fname in temps:
|
|
os.unlink(fname)
|
|
|
|
# write some data to what will become stdin, and rewind
|
|
os.write(temp_fds[1], b"STDIN")
|
|
os.lseek(temp_fds[1], 0, 0)
|
|
|
|
# move the standard file descriptors out of the way
|
|
saved_fds = [os.dup(fd) for fd in range(3)]
|
|
try:
|
|
# duplicate the file objects over the standard fd's
|
|
for fd, temp_fd in enumerate(temp_fds):
|
|
os.dup2(temp_fd, fd)
|
|
|
|
# now use those files in the "wrong" order, so that subprocess
|
|
# has to rearrange them in the child
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys; got = sys.stdin.read();'
|
|
'sys.stdout.write("got %s"%got); sys.stderr.write("err")'],
|
|
stdin=temp_fds[1],
|
|
stdout=temp_fds[2],
|
|
stderr=temp_fds[0])
|
|
p.wait()
|
|
finally:
|
|
# restore the original fd's underneath sys.stdin, etc.
|
|
for std, saved in enumerate(saved_fds):
|
|
os.dup2(saved, std)
|
|
os.close(saved)
|
|
|
|
for fd in temp_fds:
|
|
os.lseek(fd, 0, 0)
|
|
|
|
out = os.read(temp_fds[2], 1024)
|
|
err = support.strip_python_stderr(os.read(temp_fds[0], 1024))
|
|
self.assertEqual(out, b"got STDIN")
|
|
self.assertEqual(err, b"err")
|
|
|
|
finally:
|
|
for fd in temp_fds:
|
|
os.close(fd)
|
|
|
|
def test_surrogates_error_message(self):
|
|
def prepare():
|
|
raise ValueError("surrogate:\uDCff")
|
|
|
|
try:
|
|
subprocess.call(
|
|
[sys.executable, "-c", "pass"],
|
|
preexec_fn=prepare)
|
|
except ValueError as err:
|
|
# Pure Python implementations keeps the message
|
|
self.assertIsNone(subprocess._posixsubprocess)
|
|
self.assertEqual(str(err), "surrogate:\uDCff")
|
|
except RuntimeError as err:
|
|
# _posixsubprocess uses a default message
|
|
self.assertIsNotNone(subprocess._posixsubprocess)
|
|
self.assertEqual(str(err), "Exception occurred in preexec_fn.")
|
|
else:
|
|
self.fail("Expected ValueError or RuntimeError")
|
|
|
|
def test_undecodable_env(self):
|
|
for key, value in (('test', 'abc\uDCFF'), ('test\uDCFF', '42')):
|
|
# test str with surrogates
|
|
script = "import os; print(ascii(os.getenv(%s)))" % repr(key)
|
|
env = os.environ.copy()
|
|
env[key] = value
|
|
# Use C locale to get ascii for the locale encoding to force
|
|
# surrogate-escaping of \xFF in the child process; otherwise it can
|
|
# be decoded as-is if the default locale is latin-1.
|
|
env['LC_ALL'] = 'C'
|
|
stdout = subprocess.check_output(
|
|
[sys.executable, "-c", script],
|
|
env=env)
|
|
stdout = stdout.rstrip(b'\n\r')
|
|
self.assertEqual(stdout.decode('ascii'), ascii(value))
|
|
|
|
# test bytes
|
|
key = key.encode("ascii", "surrogateescape")
|
|
value = value.encode("ascii", "surrogateescape")
|
|
script = "import os; print(ascii(os.getenvb(%s)))" % repr(key)
|
|
env = os.environ.copy()
|
|
env[key] = value
|
|
stdout = subprocess.check_output(
|
|
[sys.executable, "-c", script],
|
|
env=env)
|
|
stdout = stdout.rstrip(b'\n\r')
|
|
self.assertEqual(stdout.decode('ascii'), ascii(value))
|
|
|
|
def test_bytes_program(self):
|
|
abs_program = os.fsencode(sys.executable)
|
|
path, program = os.path.split(sys.executable)
|
|
program = os.fsencode(program)
|
|
|
|
# absolute bytes path
|
|
exitcode = subprocess.call([abs_program, "-c", "pass"])
|
|
self.assertEqual(exitcode, 0)
|
|
|
|
# absolute bytes path as a string
|
|
cmd = b"'" + abs_program + b"' -c pass"
|
|
exitcode = subprocess.call(cmd, shell=True)
|
|
self.assertEqual(exitcode, 0)
|
|
|
|
# bytes program, unicode PATH
|
|
env = os.environ.copy()
|
|
env["PATH"] = path
|
|
exitcode = subprocess.call([program, "-c", "pass"], env=env)
|
|
self.assertEqual(exitcode, 0)
|
|
|
|
# bytes program, bytes PATH
|
|
envb = os.environb.copy()
|
|
envb[b"PATH"] = os.fsencode(path)
|
|
exitcode = subprocess.call([program, "-c", "pass"], env=envb)
|
|
self.assertEqual(exitcode, 0)
|
|
|
|
def test_pipe_cloexec(self):
|
|
sleeper = support.findfile("input_reader.py", subdir="subprocessdata")
|
|
fd_status = support.findfile("fd_status.py", subdir="subprocessdata")
|
|
|
|
p1 = subprocess.Popen([sys.executable, sleeper],
|
|
stdin=subprocess.PIPE, stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE, close_fds=False)
|
|
|
|
self.addCleanup(p1.communicate, b'')
|
|
|
|
p2 = subprocess.Popen([sys.executable, fd_status],
|
|
stdout=subprocess.PIPE, close_fds=False)
|
|
|
|
output, error = p2.communicate()
|
|
result_fds = set(map(int, output.split(b',')))
|
|
unwanted_fds = set([p1.stdin.fileno(), p1.stdout.fileno(),
|
|
p1.stderr.fileno()])
|
|
|
|
self.assertFalse(result_fds & unwanted_fds,
|
|
"Expected no fds from %r to be open in child, "
|
|
"found %r" %
|
|
(unwanted_fds, result_fds & unwanted_fds))
|
|
|
|
def test_pipe_cloexec_real_tools(self):
|
|
qcat = support.findfile("qcat.py", subdir="subprocessdata")
|
|
qgrep = support.findfile("qgrep.py", subdir="subprocessdata")
|
|
|
|
subdata = b'zxcvbn'
|
|
data = subdata * 4 + b'\n'
|
|
|
|
p1 = subprocess.Popen([sys.executable, qcat],
|
|
stdin=subprocess.PIPE, stdout=subprocess.PIPE,
|
|
close_fds=False)
|
|
|
|
p2 = subprocess.Popen([sys.executable, qgrep, subdata],
|
|
stdin=p1.stdout, stdout=subprocess.PIPE,
|
|
close_fds=False)
|
|
|
|
self.addCleanup(p1.wait)
|
|
self.addCleanup(p2.wait)
|
|
self.addCleanup(p1.terminate)
|
|
self.addCleanup(p2.terminate)
|
|
|
|
p1.stdin.write(data)
|
|
p1.stdin.close()
|
|
|
|
readfiles, ignored1, ignored2 = select.select([p2.stdout], [], [], 10)
|
|
|
|
self.assertTrue(readfiles, "The child hung")
|
|
self.assertEqual(p2.stdout.read(), data)
|
|
|
|
p1.stdout.close()
|
|
p2.stdout.close()
|
|
|
|
def test_close_fds(self):
|
|
fd_status = support.findfile("fd_status.py", subdir="subprocessdata")
|
|
|
|
fds = os.pipe()
|
|
self.addCleanup(os.close, fds[0])
|
|
self.addCleanup(os.close, fds[1])
|
|
|
|
open_fds = set(fds)
|
|
|
|
p = subprocess.Popen([sys.executable, fd_status],
|
|
stdout=subprocess.PIPE, close_fds=False)
|
|
output, ignored = p.communicate()
|
|
remaining_fds = set(map(int, output.split(b',')))
|
|
|
|
self.assertEqual(remaining_fds & open_fds, open_fds,
|
|
"Some fds were closed")
|
|
|
|
p = subprocess.Popen([sys.executable, fd_status],
|
|
stdout=subprocess.PIPE, close_fds=True)
|
|
output, ignored = p.communicate()
|
|
remaining_fds = set(map(int, output.split(b',')))
|
|
|
|
self.assertFalse(remaining_fds & open_fds,
|
|
"Some fds were left open")
|
|
self.assertIn(1, remaining_fds, "Subprocess failed")
|
|
|
|
# Mac OS X Tiger (10.4) has a kernel bug: sometimes, the file
|
|
# descriptor of a pipe closed in the parent process is valid in the
|
|
# child process according to fstat(), but the mode of the file
|
|
# descriptor is invalid, and read or write raise an error.
|
|
@support.requires_mac_ver(10, 5)
|
|
def test_pass_fds(self):
|
|
fd_status = support.findfile("fd_status.py", subdir="subprocessdata")
|
|
|
|
open_fds = set()
|
|
|
|
for x in range(5):
|
|
fds = os.pipe()
|
|
self.addCleanup(os.close, fds[0])
|
|
self.addCleanup(os.close, fds[1])
|
|
open_fds.update(fds)
|
|
|
|
for fd in open_fds:
|
|
p = subprocess.Popen([sys.executable, fd_status],
|
|
stdout=subprocess.PIPE, close_fds=True,
|
|
pass_fds=(fd, ))
|
|
output, ignored = p.communicate()
|
|
|
|
remaining_fds = set(map(int, output.split(b',')))
|
|
to_be_closed = open_fds - {fd}
|
|
|
|
self.assertIn(fd, remaining_fds, "fd to be passed not passed")
|
|
self.assertFalse(remaining_fds & to_be_closed,
|
|
"fd to be closed passed")
|
|
|
|
# pass_fds overrides close_fds with a warning.
|
|
with self.assertWarns(RuntimeWarning) as context:
|
|
self.assertFalse(subprocess.call(
|
|
[sys.executable, "-c", "import sys; sys.exit(0)"],
|
|
close_fds=False, pass_fds=(fd, )))
|
|
self.assertIn('overriding close_fds', str(context.warning))
|
|
|
|
def test_stdout_stdin_are_single_inout_fd(self):
|
|
with io.open(os.devnull, "r+") as inout:
|
|
p = subprocess.Popen([sys.executable, "-c", "import sys; sys.exit(0)"],
|
|
stdout=inout, stdin=inout)
|
|
p.wait()
|
|
|
|
def test_stdout_stderr_are_single_inout_fd(self):
|
|
with io.open(os.devnull, "r+") as inout:
|
|
p = subprocess.Popen([sys.executable, "-c", "import sys; sys.exit(0)"],
|
|
stdout=inout, stderr=inout)
|
|
p.wait()
|
|
|
|
def test_stderr_stdin_are_single_inout_fd(self):
|
|
with io.open(os.devnull, "r+") as inout:
|
|
p = subprocess.Popen([sys.executable, "-c", "import sys; sys.exit(0)"],
|
|
stderr=inout, stdin=inout)
|
|
p.wait()
|
|
|
|
def test_wait_when_sigchild_ignored(self):
|
|
# NOTE: sigchild_ignore.py may not be an effective test on all OSes.
|
|
sigchild_ignore = support.findfile("sigchild_ignore.py",
|
|
subdir="subprocessdata")
|
|
p = subprocess.Popen([sys.executable, sigchild_ignore],
|
|
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
stdout, stderr = p.communicate()
|
|
self.assertEqual(0, p.returncode, "sigchild_ignore.py exited"
|
|
" non-zero with this error:\n%s" %
|
|
stderr.decode('utf-8'))
|
|
|
|
def test_select_unbuffered(self):
|
|
# Issue #11459: bufsize=0 should really set the pipes as
|
|
# unbuffered (and therefore let select() work properly).
|
|
select = support.import_module("select")
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys;'
|
|
'sys.stdout.write("apple")'],
|
|
stdout=subprocess.PIPE,
|
|
bufsize=0)
|
|
f = p.stdout
|
|
self.addCleanup(f.close)
|
|
try:
|
|
self.assertEqual(f.read(4), b"appl")
|
|
self.assertIn(f, select.select([f], [], [], 0.0)[0])
|
|
finally:
|
|
p.wait()
|
|
|
|
|
|
@unittest.skipUnless(mswindows, "Windows specific tests")
|
|
class Win32ProcessTestCase(BaseTestCase):
|
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def test_startupinfo(self):
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# startupinfo argument
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# We uses hardcoded constants, because we do not want to
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# depend on win32all.
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STARTF_USESHOWWINDOW = 1
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SW_MAXIMIZE = 3
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startupinfo = subprocess.STARTUPINFO()
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startupinfo.dwFlags = STARTF_USESHOWWINDOW
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startupinfo.wShowWindow = SW_MAXIMIZE
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# Since Python is a console process, it won't be affected
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# by wShowWindow, but the argument should be silently
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# ignored
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subprocess.call([sys.executable, "-c", "import sys; sys.exit(0)"],
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startupinfo=startupinfo)
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def test_creationflags(self):
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# creationflags argument
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CREATE_NEW_CONSOLE = 16
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sys.stderr.write(" a DOS box should flash briefly ...\n")
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subprocess.call(sys.executable +
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' -c "import time; time.sleep(0.25)"',
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creationflags=CREATE_NEW_CONSOLE)
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def test_invalid_args(self):
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# invalid arguments should raise ValueError
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self.assertRaises(ValueError, subprocess.call,
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[sys.executable, "-c",
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"import sys; sys.exit(47)"],
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preexec_fn=lambda: 1)
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self.assertRaises(ValueError, subprocess.call,
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[sys.executable, "-c",
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"import sys; sys.exit(47)"],
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stdout=subprocess.PIPE,
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close_fds=True)
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def test_close_fds(self):
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# close file descriptors
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rc = subprocess.call([sys.executable, "-c",
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"import sys; sys.exit(47)"],
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close_fds=True)
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self.assertEqual(rc, 47)
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def test_shell_sequence(self):
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# Run command through the shell (sequence)
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newenv = os.environ.copy()
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newenv["FRUIT"] = "physalis"
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p = subprocess.Popen(["set"], shell=1,
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stdout=subprocess.PIPE,
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env=newenv)
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self.addCleanup(p.stdout.close)
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self.assertIn(b"physalis", p.stdout.read())
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def test_shell_string(self):
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# Run command through the shell (string)
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newenv = os.environ.copy()
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newenv["FRUIT"] = "physalis"
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p = subprocess.Popen("set", shell=1,
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stdout=subprocess.PIPE,
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env=newenv)
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self.addCleanup(p.stdout.close)
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self.assertIn(b"physalis", p.stdout.read())
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def test_call_string(self):
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# call() function with string argument on Windows
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rc = subprocess.call(sys.executable +
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' -c "import sys; sys.exit(47)"')
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self.assertEqual(rc, 47)
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def _kill_process(self, method, *args):
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# Some win32 buildbot raises EOFError if stdin is inherited
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p = subprocess.Popen([sys.executable, "-c", """if 1:
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import sys, time
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sys.stdout.write('x\\n')
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sys.stdout.flush()
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time.sleep(30)
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"""],
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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self.addCleanup(p.stdout.close)
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self.addCleanup(p.stderr.close)
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self.addCleanup(p.stdin.close)
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# Wait for the interpreter to be completely initialized before
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# sending any signal.
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p.stdout.read(1)
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getattr(p, method)(*args)
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_, stderr = p.communicate()
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self.assertStderrEqual(stderr, b'')
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returncode = p.wait()
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self.assertNotEqual(returncode, 0)
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def test_send_signal(self):
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self._kill_process('send_signal', signal.SIGTERM)
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def test_kill(self):
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self._kill_process('kill')
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def test_terminate(self):
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self._kill_process('terminate')
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# The module says:
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# "NB This only works (and is only relevant) for UNIX."
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#
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# Actually, getoutput should work on any platform with an os.popen, but
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# I'll take the comment as given, and skip this suite.
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@unittest.skipUnless(os.name == 'posix', "only relevant for UNIX")
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class CommandTests(unittest.TestCase):
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def test_getoutput(self):
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self.assertEqual(subprocess.getoutput('echo xyzzy'), 'xyzzy')
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self.assertEqual(subprocess.getstatusoutput('echo xyzzy'),
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(0, 'xyzzy'))
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# we use mkdtemp in the next line to create an empty directory
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# under our exclusive control; from that, we can invent a pathname
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# that we _know_ won't exist. This is guaranteed to fail.
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dir = None
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try:
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dir = tempfile.mkdtemp()
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name = os.path.join(dir, "foo")
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status, output = subprocess.getstatusoutput('cat ' + name)
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self.assertNotEqual(status, 0)
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finally:
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if dir is not None:
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os.rmdir(dir)
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@unittest.skipUnless(getattr(subprocess, '_has_poll', False),
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"poll system call not supported")
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class ProcessTestCaseNoPoll(ProcessTestCase):
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def setUp(self):
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subprocess._has_poll = False
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ProcessTestCase.setUp(self)
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def tearDown(self):
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subprocess._has_poll = True
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ProcessTestCase.tearDown(self)
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class HelperFunctionTests(unittest.TestCase):
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@unittest.skipIf(mswindows, "errno and EINTR make no sense on windows")
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def test_eintr_retry_call(self):
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record_calls = []
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def fake_os_func(*args):
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record_calls.append(args)
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if len(record_calls) == 2:
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raise OSError(errno.EINTR, "fake interrupted system call")
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return tuple(reversed(args))
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self.assertEqual((999, 256),
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subprocess._eintr_retry_call(fake_os_func, 256, 999))
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self.assertEqual([(256, 999)], record_calls)
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# This time there will be an EINTR so it will loop once.
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self.assertEqual((666,),
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subprocess._eintr_retry_call(fake_os_func, 666))
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self.assertEqual([(256, 999), (666,), (666,)], record_calls)
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@unittest.skipUnless(mswindows, "Windows-specific tests")
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class CommandsWithSpaces (BaseTestCase):
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def setUp(self):
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super().setUp()
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f, fname = mkstemp(".py", "te st")
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self.fname = fname.lower ()
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os.write(f, b"import sys;"
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b"sys.stdout.write('%d %s' % (len(sys.argv), [a.lower () for a in sys.argv]))"
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)
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os.close(f)
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def tearDown(self):
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os.remove(self.fname)
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super().tearDown()
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def with_spaces(self, *args, **kwargs):
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kwargs['stdout'] = subprocess.PIPE
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p = subprocess.Popen(*args, **kwargs)
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self.addCleanup(p.stdout.close)
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self.assertEqual(
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p.stdout.read ().decode("mbcs"),
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"2 [%r, 'ab cd']" % self.fname
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)
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def test_shell_string_with_spaces(self):
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# call() function with string argument with spaces on Windows
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self.with_spaces('"%s" "%s" "%s"' % (sys.executable, self.fname,
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"ab cd"), shell=1)
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def test_shell_sequence_with_spaces(self):
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# call() function with sequence argument with spaces on Windows
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self.with_spaces([sys.executable, self.fname, "ab cd"], shell=1)
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def test_noshell_string_with_spaces(self):
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# call() function with string argument with spaces on Windows
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self.with_spaces('"%s" "%s" "%s"' % (sys.executable, self.fname,
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"ab cd"))
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def test_noshell_sequence_with_spaces(self):
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# call() function with sequence argument with spaces on Windows
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self.with_spaces([sys.executable, self.fname, "ab cd"])
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class ContextManagerTests(ProcessTestCase):
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|
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def test_pipe(self):
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with subprocess.Popen([sys.executable, "-c",
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"import sys;"
|
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"sys.stdout.write('stdout');"
|
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"sys.stderr.write('stderr');"],
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE) as proc:
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self.assertEqual(proc.stdout.read(), b"stdout")
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self.assertStderrEqual(proc.stderr.read(), b"stderr")
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self.assertTrue(proc.stdout.closed)
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self.assertTrue(proc.stderr.closed)
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def test_returncode(self):
|
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with subprocess.Popen([sys.executable, "-c",
|
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"import sys; sys.exit(100)"]) as proc:
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pass
|
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# __exit__ calls wait(), so the returncode should be set
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self.assertEqual(proc.returncode, 100)
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def test_communicate_stdin(self):
|
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with subprocess.Popen([sys.executable, "-c",
|
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"import sys;"
|
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"sys.exit(sys.stdin.read() == 'context')"],
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stdin=subprocess.PIPE) as proc:
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proc.communicate(b"context")
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self.assertEqual(proc.returncode, 1)
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|
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def test_invalid_args(self):
|
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with self.assertRaises(EnvironmentError) as c:
|
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with subprocess.Popen(['nonexisting_i_hope'],
|
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stdout=subprocess.PIPE,
|
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stderr=subprocess.PIPE) as proc:
|
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pass
|
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|
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if c.exception.errno != errno.ENOENT: # ignore "no such file"
|
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raise c.exception
|
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|
|
|
|
def test_main():
|
|
unit_tests = (ProcessTestCase,
|
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POSIXProcessTestCase,
|
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Win32ProcessTestCase,
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CommandTests,
|
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ProcessTestCaseNoPoll,
|
|
HelperFunctionTests,
|
|
CommandsWithSpaces,
|
|
ContextManagerTests)
|
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|
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support.run_unittest(*unit_tests)
|
|
support.reap_children()
|
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|
|
if __name__ == "__main__":
|
|
unittest.main()
|