2307 lines
95 KiB
Python
2307 lines
95 KiB
Python
import unittest
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from test import script_helper
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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 locale
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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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import gc
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import textwrap
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try:
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import resource
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except ImportError:
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resource = None
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try:
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import threading
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except ImportError:
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threading = 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 PopenTestException(Exception):
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pass
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class PopenExecuteChildRaises(subprocess.Popen):
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"""Popen subclass for testing cleanup of subprocess.PIPE filehandles when
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_execute_child fails.
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"""
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def _execute_child(self, *args, **kwargs):
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raise PopenTestException("Forced Exception for Test")
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class ProcessTestCase(BaseTestCase):
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def test_io_buffered_by_default(self):
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p = subprocess.Popen([sys.executable, "-c", "import sys; sys.exit(0)"],
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stdin=subprocess.PIPE, stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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try:
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self.assertIsInstance(p.stdin, io.BufferedIOBase)
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self.assertIsInstance(p.stdout, io.BufferedIOBase)
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self.assertIsInstance(p.stderr, io.BufferedIOBase)
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finally:
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p.stdin.close()
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p.stdout.close()
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p.stderr.close()
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p.wait()
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def test_io_unbuffered_works(self):
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p = subprocess.Popen([sys.executable, "-c", "import sys; sys.exit(0)"],
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stdin=subprocess.PIPE, stdout=subprocess.PIPE,
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stderr=subprocess.PIPE, bufsize=0)
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try:
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self.assertIsInstance(p.stdin, io.RawIOBase)
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self.assertIsInstance(p.stdout, io.RawIOBase)
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self.assertIsInstance(p.stderr, io.RawIOBase)
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finally:
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p.stdin.close()
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p.stdout.close()
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p.stderr.close()
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p.wait()
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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, and the child's stdout will
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# be inherited from the parent. In order to test this we run a
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# subprocess in a subprocess:
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# this_test
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# \-- subprocess created by this test (parent)
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# \-- subprocess created by the parent subprocess (child)
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# The parent doesn't specify stdout, so the child will use the
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# parent's stdout. This test checks that the message printed by the
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# child goes to the parent stdout. The parent also checks that the
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# child's stdout is None. See #11963.
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code = ('import sys; from subprocess import Popen, PIPE;'
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'p = Popen([sys.executable, "-c", "print(\'test_stdout_none\')"],'
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' stdin=PIPE, stderr=PIPE);'
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'p.wait(); assert p.stdout is None;')
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p = subprocess.Popen([sys.executable, "-c", code],
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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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out, err = p.communicate()
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self.assertEqual(p.returncode, 0, err)
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self.assertEqual(out.rstrip(), b'test_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 _assert_python(self, pre_args, **kwargs):
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# We include sys.exit() to prevent the test runner from hanging
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# whenever python is found.
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args = pre_args + ["import sys; sys.exit(47)"]
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p = subprocess.Popen(args, **kwargs)
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p.wait()
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self.assertEqual(47, p.returncode)
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def test_executable(self):
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# Check that the executable argument works.
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#
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# On Unix (non-Mac and non-Windows), Python looks at args[0] to
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# determine where its standard library is, so we need the directory
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# of args[0] to be valid for the Popen() call to Python to succeed.
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# See also issue #16170 and issue #7774.
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doesnotexist = os.path.join(os.path.dirname(sys.executable),
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"doesnotexist")
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self._assert_python([doesnotexist, "-c"], executable=sys.executable)
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def test_executable_takes_precedence(self):
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# Check that the executable argument takes precedence over args[0].
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#
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# Verify first that the call succeeds without the executable arg.
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pre_args = [sys.executable, "-c"]
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self._assert_python(pre_args)
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self.assertRaises(FileNotFoundError, self._assert_python, pre_args,
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executable="doesnotexist")
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@unittest.skipIf(mswindows, "executable argument replaces shell")
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def test_executable_replaces_shell(self):
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# Check that the executable argument replaces the default shell
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# when shell=True.
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self._assert_python([], executable=sys.executable, shell=True)
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# For use in the test_cwd* tests below.
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def _normalize_cwd(self, cwd):
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# Normalize an expected cwd (for Tru64 support).
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# We can't use os.path.realpath since it doesn't expand Tru64 {memb}
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# strings. See bug #1063571.
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original_cwd = os.getcwd()
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os.chdir(cwd)
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cwd = os.getcwd()
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os.chdir(original_cwd)
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return cwd
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# For use in the test_cwd* tests below.
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def _split_python_path(self):
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# Return normalized (python_dir, python_base).
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python_path = os.path.realpath(sys.executable)
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return os.path.split(python_path)
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# For use in the test_cwd* tests below.
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def _assert_cwd(self, expected_cwd, python_arg, **kwargs):
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# Invoke Python via Popen, and assert that (1) the call succeeds,
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# and that (2) the current working directory of the child process
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# matches *expected_cwd*.
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p = subprocess.Popen([python_arg, "-c",
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"import os, sys; "
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"sys.stdout.write(os.getcwd()); "
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"sys.exit(47)"],
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stdout=subprocess.PIPE,
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**kwargs)
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self.addCleanup(p.stdout.close)
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p.wait()
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self.assertEqual(47, p.returncode)
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normcase = os.path.normcase
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self.assertEqual(normcase(expected_cwd),
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normcase(p.stdout.read().decode("utf-8")))
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def test_cwd(self):
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# Check that cwd changes the cwd for the child process.
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temp_dir = tempfile.gettempdir()
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temp_dir = self._normalize_cwd(temp_dir)
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self._assert_cwd(temp_dir, sys.executable, cwd=temp_dir)
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@unittest.skipIf(mswindows, "pending resolution of issue #15533")
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def test_cwd_with_relative_arg(self):
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# Check that Popen looks for args[0] relative to cwd if args[0]
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# is relative.
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python_dir, python_base = self._split_python_path()
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rel_python = os.path.join(os.curdir, python_base)
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with support.temp_cwd() as wrong_dir:
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# Before calling with the correct cwd, confirm that the call fails
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# without cwd and with the wrong cwd.
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self.assertRaises(FileNotFoundError, subprocess.Popen,
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[rel_python])
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self.assertRaises(FileNotFoundError, subprocess.Popen,
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[rel_python], cwd=wrong_dir)
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python_dir = self._normalize_cwd(python_dir)
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self._assert_cwd(python_dir, rel_python, cwd=python_dir)
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@unittest.skipIf(mswindows, "pending resolution of issue #15533")
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def test_cwd_with_relative_executable(self):
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# Check that Popen looks for executable relative to cwd if executable
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# is relative (and that executable takes precedence over args[0]).
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python_dir, python_base = self._split_python_path()
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rel_python = os.path.join(os.curdir, python_base)
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doesntexist = "somethingyoudonthave"
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with support.temp_cwd() as wrong_dir:
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# Before calling with the correct cwd, confirm that the call fails
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# without cwd and with the wrong cwd.
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self.assertRaises(FileNotFoundError, subprocess.Popen,
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[doesntexist], executable=rel_python)
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self.assertRaises(FileNotFoundError, subprocess.Popen,
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[doesntexist], executable=rel_python,
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cwd=wrong_dir)
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python_dir = self._normalize_cwd(python_dir)
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self._assert_cwd(python_dir, doesntexist, executable=rel_python,
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cwd=python_dir)
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def test_cwd_with_absolute_arg(self):
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# Check that Popen can find the executable when the cwd is wrong
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# if args[0] is an absolute path.
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python_dir, python_base = self._split_python_path()
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abs_python = os.path.join(python_dir, python_base)
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rel_python = os.path.join(os.curdir, python_base)
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with script_helper.temp_dir() as wrong_dir:
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# Before calling with an absolute path, confirm that using a
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# relative path fails.
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self.assertRaises(FileNotFoundError, subprocess.Popen,
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[rel_python], cwd=wrong_dir)
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wrong_dir = self._normalize_cwd(wrong_dir)
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self._assert_cwd(wrong_dir, abs_python, cwd=wrong_dir)
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@unittest.skipIf(sys.base_prefix != sys.prefix,
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'Test is not venv-compatible')
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def test_executable_with_cwd(self):
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python_dir, python_base = self._split_python_path()
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python_dir = self._normalize_cwd(python_dir)
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self._assert_cwd(python_dir, "somethingyoudonthave",
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executable=sys.executable, cwd=python_dir)
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|
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@unittest.skipIf(sys.base_prefix != sys.prefix,
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'Test is not venv-compatible')
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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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self._assert_cwd(os.getcwd(), "somethingyoudonthave",
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executable=sys.executable)
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|
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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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|
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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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|
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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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|
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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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|
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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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|
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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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|
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def test_stderr_pipe(self):
|
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# stderr redirection
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys; sys.stderr.write("strawberry")'],
|
|
stderr=subprocess.PIPE)
|
|
self.addCleanup(p.stderr.close)
|
|
self.assertStderrEqual(p.stderr.read(), b"strawberry")
|
|
|
|
def test_stderr_filedes(self):
|
|
# stderr is set to open file descriptor
|
|
tf = tempfile.TemporaryFile()
|
|
self.addCleanup(tf.close)
|
|
d = tf.fileno()
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys; sys.stderr.write("strawberry")'],
|
|
stderr=d)
|
|
p.wait()
|
|
os.lseek(d, 0, 0)
|
|
self.assertStderrEqual(os.read(d, 1024), b"strawberry")
|
|
|
|
def test_stderr_fileobj(self):
|
|
# stderr is set to open file object
|
|
tf = tempfile.TemporaryFile()
|
|
self.addCleanup(tf.close)
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys; sys.stderr.write("strawberry")'],
|
|
stderr=tf)
|
|
p.wait()
|
|
tf.seek(0)
|
|
self.assertStderrEqual(tf.read(), b"strawberry")
|
|
|
|
def test_stdout_stderr_pipe(self):
|
|
# capture stdout and stderr to the same pipe
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys;'
|
|
'sys.stdout.write("apple");'
|
|
'sys.stdout.flush();'
|
|
'sys.stderr.write("orange")'],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.STDOUT)
|
|
self.addCleanup(p.stdout.close)
|
|
self.assertStderrEqual(p.stdout.read(), b"appleorange")
|
|
|
|
def test_stdout_stderr_file(self):
|
|
# capture stdout and stderr to the same open file
|
|
tf = tempfile.TemporaryFile()
|
|
self.addCleanup(tf.close)
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys;'
|
|
'sys.stdout.write("apple");'
|
|
'sys.stdout.flush();'
|
|
'sys.stderr.write("orange")'],
|
|
stdout=tf,
|
|
stderr=tf)
|
|
p.wait()
|
|
tf.seek(0)
|
|
self.assertStderrEqual(tf.read(), b"appleorange")
|
|
|
|
def test_stdout_filedes_of_stdout(self):
|
|
# stdout is set to 1 (#1531862).
|
|
# To avoid printing the text on stdout, we do something similar to
|
|
# test_stdout_none (see above). The parent subprocess calls the child
|
|
# subprocess passing stdout=1, and this test uses stdout=PIPE in
|
|
# order to capture and check the output of the parent. See #11963.
|
|
code = ('import sys, subprocess; '
|
|
'rc = subprocess.call([sys.executable, "-c", '
|
|
' "import os, sys; sys.exit(os.write(sys.stdout.fileno(), '
|
|
'b\'test with stdout=1\'))"], stdout=1); '
|
|
'assert rc == 18')
|
|
p = subprocess.Popen([sys.executable, "-c", code],
|
|
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
self.addCleanup(p.stdout.close)
|
|
self.addCleanup(p.stderr.close)
|
|
out, err = p.communicate()
|
|
self.assertEqual(p.returncode, 0, err)
|
|
self.assertEqual(out.rstrip(), b'test with stdout=1')
|
|
|
|
def test_stdout_devnull(self):
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'for i in range(10240):'
|
|
'print("x" * 1024)'],
|
|
stdout=subprocess.DEVNULL)
|
|
p.wait()
|
|
self.assertEqual(p.stdout, None)
|
|
|
|
def test_stderr_devnull(self):
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys\n'
|
|
'for i in range(10240):'
|
|
'sys.stderr.write("x" * 1024)'],
|
|
stderr=subprocess.DEVNULL)
|
|
p.wait()
|
|
self.assertEqual(p.stderr, None)
|
|
|
|
def test_stdin_devnull(self):
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys;'
|
|
'sys.stdin.read(1)'],
|
|
stdin=subprocess.DEVNULL)
|
|
p.wait()
|
|
self.assertEqual(p.stdin, None)
|
|
|
|
def test_env(self):
|
|
newenv = os.environ.copy()
|
|
newenv["FRUIT"] = "orange"
|
|
with subprocess.Popen([sys.executable, "-c",
|
|
'import sys,os;'
|
|
'sys.stdout.write(os.getenv("FRUIT"))'],
|
|
stdout=subprocess.PIPE,
|
|
env=newenv) as p:
|
|
stdout, stderr = p.communicate()
|
|
self.assertEqual(stdout, b"orange")
|
|
|
|
# Windows requires at least the SYSTEMROOT environment variable to start
|
|
# Python
|
|
@unittest.skipIf(sys.platform == 'win32',
|
|
'cannot test an empty env on Windows')
|
|
@unittest.skipIf(sysconfig.get_config_var('Py_ENABLE_SHARED') is not None,
|
|
'the python library cannot be loaded '
|
|
'with an empty environment')
|
|
def test_empty_env(self):
|
|
with subprocess.Popen([sys.executable, "-c",
|
|
'import os; '
|
|
'print(list(os.environ.keys()))'],
|
|
stdout=subprocess.PIPE,
|
|
env={}) as p:
|
|
stdout, stderr = p.communicate()
|
|
self.assertIn(stdout.strip(),
|
|
(b"[]",
|
|
# Mac OS X adds __CF_USER_TEXT_ENCODING variable to an empty
|
|
# environment
|
|
b"['__CF_USER_TEXT_ENCODING']"))
|
|
|
|
def test_communicate_stdin(self):
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys;'
|
|
'sys.exit(sys.stdin.read() == "pear")'],
|
|
stdin=subprocess.PIPE)
|
|
p.communicate(b"pear")
|
|
self.assertEqual(p.returncode, 1)
|
|
|
|
def test_communicate_stdout(self):
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys; sys.stdout.write("pineapple")'],
|
|
stdout=subprocess.PIPE)
|
|
(stdout, stderr) = p.communicate()
|
|
self.assertEqual(stdout, b"pineapple")
|
|
self.assertEqual(stderr, None)
|
|
|
|
def test_communicate_stderr(self):
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys; sys.stderr.write("pineapple")'],
|
|
stderr=subprocess.PIPE)
|
|
(stdout, stderr) = p.communicate()
|
|
self.assertEqual(stdout, None)
|
|
self.assertStderrEqual(stderr, b"pineapple")
|
|
|
|
def test_communicate(self):
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys,os;'
|
|
'sys.stderr.write("pineapple");'
|
|
'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)
|
|
(stdout, stderr) = p.communicate(b"banana")
|
|
self.assertEqual(stdout, b"banana")
|
|
self.assertStderrEqual(stderr, b"pineapple")
|
|
|
|
def test_communicate_timeout(self):
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys,os,time;'
|
|
'sys.stderr.write("pineapple\\n");'
|
|
'time.sleep(1);'
|
|
'sys.stderr.write("pear\\n");'
|
|
'sys.stdout.write(sys.stdin.read())'],
|
|
universal_newlines=True,
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
self.assertRaises(subprocess.TimeoutExpired, p.communicate, "banana",
|
|
timeout=0.3)
|
|
# Make sure we can keep waiting for it, and that we get the whole output
|
|
# after it completes.
|
|
(stdout, stderr) = p.communicate()
|
|
self.assertEqual(stdout, "banana")
|
|
self.assertStderrEqual(stderr.encode(), b"pineapple\npear\n")
|
|
|
|
def test_communicate_timeout_large_ouput(self):
|
|
# Test an expiring 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 +
|
|
'buf = sys.stdout.buffer;'
|
|
'buf.write(sys.stdin.readline().encode());'
|
|
'buf.flush();'
|
|
'buf.write(b"line2\\n");'
|
|
'buf.flush();'
|
|
'buf.write(sys.stdin.read().encode());'
|
|
'buf.flush();'
|
|
'buf.write(b"line4\\n");'
|
|
'buf.flush();'
|
|
'buf.write(b"line5\\r\\n");'
|
|
'buf.flush();'
|
|
'buf.write(b"line6\\r");'
|
|
'buf.flush();'
|
|
'buf.write(b"\\nline7");'
|
|
'buf.flush();'
|
|
'buf.write(b"\\nline8");'],
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
universal_newlines=1)
|
|
p.stdin.write("line1\n")
|
|
self.assertEqual(p.stdout.readline(), "line1\n")
|
|
p.stdin.write("line3\n")
|
|
p.stdin.close()
|
|
self.addCleanup(p.stdout.close)
|
|
self.assertEqual(p.stdout.readline(),
|
|
"line2\n")
|
|
self.assertEqual(p.stdout.read(6),
|
|
"line3\n")
|
|
self.assertEqual(p.stdout.read(),
|
|
"line4\nline5\nline6\nline7\nline8")
|
|
|
|
def test_universal_newlines_communicate(self):
|
|
# universal newlines through communicate()
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys,os;' + SETBINARY +
|
|
'buf = sys.stdout.buffer;'
|
|
'buf.write(b"line2\\n");'
|
|
'buf.flush();'
|
|
'buf.write(b"line4\\n");'
|
|
'buf.flush();'
|
|
'buf.write(b"line5\\r\\n");'
|
|
'buf.flush();'
|
|
'buf.write(b"line6\\r");'
|
|
'buf.flush();'
|
|
'buf.write(b"\\nline7");'
|
|
'buf.flush();'
|
|
'buf.write(b"\\nline8");'],
|
|
stderr=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
universal_newlines=1)
|
|
self.addCleanup(p.stdout.close)
|
|
self.addCleanup(p.stderr.close)
|
|
(stdout, stderr) = p.communicate()
|
|
self.assertEqual(stdout,
|
|
"line2\nline4\nline5\nline6\nline7\nline8")
|
|
|
|
def test_universal_newlines_communicate_stdin(self):
|
|
# universal newlines through communicate(), with only stdin
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys,os;' + SETBINARY + textwrap.dedent('''
|
|
s = sys.stdin.readline()
|
|
assert s == "line1\\n", repr(s)
|
|
s = sys.stdin.read()
|
|
assert s == "line3\\n", repr(s)
|
|
''')],
|
|
stdin=subprocess.PIPE,
|
|
universal_newlines=1)
|
|
(stdout, stderr) = p.communicate("line1\nline3\n")
|
|
self.assertEqual(p.returncode, 0)
|
|
|
|
def test_universal_newlines_communicate_input_none(self):
|
|
# Test communicate(input=None) with universal newlines.
|
|
#
|
|
# We set stdout to PIPE because, as of this writing, a different
|
|
# code path is tested when the number of pipes is zero or one.
|
|
p = subprocess.Popen([sys.executable, "-c", "pass"],
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
universal_newlines=True)
|
|
p.communicate()
|
|
self.assertEqual(p.returncode, 0)
|
|
|
|
def test_universal_newlines_communicate_stdin_stdout_stderr(self):
|
|
# universal newlines through communicate(), with stdin, stdout, stderr
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys,os;' + SETBINARY + textwrap.dedent('''
|
|
s = sys.stdin.buffer.readline()
|
|
sys.stdout.buffer.write(s)
|
|
sys.stdout.buffer.write(b"line2\\r")
|
|
sys.stderr.buffer.write(b"eline2\\n")
|
|
s = sys.stdin.buffer.read()
|
|
sys.stdout.buffer.write(s)
|
|
sys.stdout.buffer.write(b"line4\\n")
|
|
sys.stdout.buffer.write(b"line5\\r\\n")
|
|
sys.stderr.buffer.write(b"eline6\\r")
|
|
sys.stderr.buffer.write(b"eline7\\r\\nz")
|
|
''')],
|
|
stdin=subprocess.PIPE,
|
|
stderr=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
universal_newlines=True)
|
|
self.addCleanup(p.stdout.close)
|
|
self.addCleanup(p.stderr.close)
|
|
(stdout, stderr) = p.communicate("line1\nline3\n")
|
|
self.assertEqual(p.returncode, 0)
|
|
self.assertEqual("line1\nline2\nline3\nline4\nline5\n", stdout)
|
|
# Python debug build push something like "[42442 refs]\n"
|
|
# to stderr at exit of subprocess.
|
|
# Don't use assertStderrEqual because it strips CR and LF from output.
|
|
self.assertTrue(stderr.startswith("eline2\neline6\neline7\n"))
|
|
|
|
def test_universal_newlines_communicate_encodings(self):
|
|
# Check that universal newlines mode works for various encodings,
|
|
# in particular for encodings in the UTF-16 and UTF-32 families.
|
|
# See issue #15595.
|
|
#
|
|
# UTF-16 and UTF-32-BE are sufficient to check both with BOM and
|
|
# without, and UTF-16 and UTF-32.
|
|
for encoding in ['utf-16', 'utf-32-be']:
|
|
old_getpreferredencoding = locale.getpreferredencoding
|
|
# Indirectly via io.TextIOWrapper, Popen() defaults to
|
|
# locale.getpreferredencoding(False) and earlier in Python 3.2 to
|
|
# locale.getpreferredencoding().
|
|
def getpreferredencoding(do_setlocale=True):
|
|
return encoding
|
|
code = ("import sys; "
|
|
r"sys.stdout.buffer.write('1\r\n2\r3\n4'.encode('%s'))" %
|
|
encoding)
|
|
args = [sys.executable, '-c', code]
|
|
try:
|
|
locale.getpreferredencoding = getpreferredencoding
|
|
# We set stdin to be non-None because, as of this writing,
|
|
# a different code path is used when the number of pipes is
|
|
# zero or one.
|
|
popen = subprocess.Popen(args, universal_newlines=True,
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE)
|
|
stdout, stderr = popen.communicate(input='')
|
|
finally:
|
|
locale.getpreferredencoding = old_getpreferredencoding
|
|
self.assertEqual(stdout, '1\n2\n3\n4')
|
|
|
|
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 os; os.read(0, 1)"],
|
|
stdin=subprocess.PIPE)
|
|
self.addCleanup(p.stdin.close)
|
|
self.assertIsNone(p.poll())
|
|
os.write(p.stdin.fileno(), b'A')
|
|
p.wait()
|
|
# Subsequent invocations should just return the returncode
|
|
self.assertEqual(p.poll(), 0)
|
|
|
|
def test_wait(self):
|
|
p = subprocess.Popen([sys.executable, "-c", "pass"])
|
|
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(0.3)"])
|
|
with self.assertRaises(subprocess.TimeoutExpired) as c:
|
|
p.wait(timeout=0.0001)
|
|
self.assertIn("0.0001", 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
|
|
|
|
@unittest.skipIf(threading is None, "threading required")
|
|
def test_double_close_on_error(self):
|
|
# Issue #18851
|
|
fds = []
|
|
def open_fds():
|
|
for i in range(20):
|
|
fds.extend(os.pipe())
|
|
time.sleep(0.001)
|
|
t = threading.Thread(target=open_fds)
|
|
t.start()
|
|
try:
|
|
with self.assertRaises(EnvironmentError):
|
|
subprocess.Popen(['nonexisting_i_hope'],
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
finally:
|
|
t.join()
|
|
exc = None
|
|
for fd in fds:
|
|
# If a double close occurred, some of those fds will
|
|
# already have been closed by mistake, and os.close()
|
|
# here will raise.
|
|
try:
|
|
os.close(fd)
|
|
except OSError as e:
|
|
exc = e
|
|
if exc is not None:
|
|
raise exc
|
|
|
|
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)
|
|
p.wait()
|
|
p.communicate(b"x" * 2**20)
|
|
|
|
@unittest.skipUnless(hasattr(signal, 'SIGUSR1'),
|
|
"Requires signal.SIGUSR1")
|
|
@unittest.skipUnless(hasattr(os, 'kill'),
|
|
"Requires os.kill")
|
|
@unittest.skipUnless(hasattr(os, 'getppid'),
|
|
"Requires os.getppid")
|
|
def test_communicate_eintr(self):
|
|
# Issue #12493: communicate() should handle EINTR
|
|
def handler(signum, frame):
|
|
pass
|
|
old_handler = signal.signal(signal.SIGUSR1, handler)
|
|
self.addCleanup(signal.signal, signal.SIGUSR1, old_handler)
|
|
|
|
args = [sys.executable, "-c",
|
|
'import os, signal;'
|
|
'os.kill(os.getppid(), signal.SIGUSR1)']
|
|
for stream in ('stdout', 'stderr'):
|
|
kw = {stream: subprocess.PIPE}
|
|
with subprocess.Popen(args, **kw) as process:
|
|
# communicate() will be interrupted by SIGUSR1
|
|
process.communicate()
|
|
|
|
|
|
# This test is Linux-ish specific for simplicity to at least have
|
|
# some coverage. It is not a platform specific bug.
|
|
@unittest.skipUnless(os.path.isdir('/proc/%d/fd' % os.getpid()),
|
|
"Linux specific")
|
|
def test_failed_child_execute_fd_leak(self):
|
|
"""Test for the fork() failure fd leak reported in issue16327."""
|
|
fd_directory = '/proc/%d/fd' % os.getpid()
|
|
fds_before_popen = os.listdir(fd_directory)
|
|
with self.assertRaises(PopenTestException):
|
|
PopenExecuteChildRaises(
|
|
[sys.executable, '-c', 'pass'], stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
|
|
# NOTE: This test doesn't verify that the real _execute_child
|
|
# does not close the file descriptors itself on the way out
|
|
# during an exception. Code inspection has confirmed that.
|
|
|
|
fds_after_exception = os.listdir(fd_directory)
|
|
self.assertEqual(fds_before_popen, fds_after_exception)
|
|
|
|
|
|
# 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)."""
|
|
if resource is not None:
|
|
try:
|
|
self.old_limit = resource.getrlimit(resource.RLIMIT_CORE)
|
|
resource.setrlimit(resource.RLIMIT_CORE, (0, 0))
|
|
except (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
|
|
if resource is not None:
|
|
try:
|
|
resource.setrlimit(resource.RLIMIT_CORE, self.old_limit)
|
|
except (ValueError, resource.error):
|
|
pass
|
|
|
|
|
|
@unittest.skipIf(mswindows, "POSIX specific tests")
|
|
class POSIXProcessTestCase(BaseTestCase):
|
|
|
|
def setUp(self):
|
|
super().setUp()
|
|
self._nonexistent_dir = "/_this/pa.th/does/not/exist"
|
|
|
|
def _get_chdir_exception(self):
|
|
try:
|
|
os.chdir(self._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(self._nonexistent_dir)
|
|
else:
|
|
self.fail("chdir to nonexistant directory %s succeeded." %
|
|
self._nonexistent_dir)
|
|
return desired_exception
|
|
|
|
def test_exception_cwd(self):
|
|
"""Test error in the child raised in the parent for a bad cwd."""
|
|
desired_exception = self._get_chdir_exception()
|
|
try:
|
|
p = subprocess.Popen([sys.executable, "-c", ""],
|
|
cwd=self._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_exception_bad_executable(self):
|
|
"""Test error in the child raised in the parent for a bad executable."""
|
|
desired_exception = self._get_chdir_exception()
|
|
try:
|
|
p = subprocess.Popen([sys.executable, "-c", ""],
|
|
executable=self._nonexistent_dir)
|
|
except OSError as e:
|
|
# Test that the child process exec 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_exception_bad_args_0(self):
|
|
"""Test error in the child raised in the parent for a bad args[0]."""
|
|
desired_exception = self._get_chdir_exception()
|
|
try:
|
|
p = subprocess.Popen([self._nonexistent_dir, "-c", ""])
|
|
except OSError as e:
|
|
# Test that the child process exec 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.")
|
|
|
|
class _TestExecuteChildPopen(subprocess.Popen):
|
|
"""Used to test behavior at the end of _execute_child."""
|
|
def __init__(self, testcase, *args, **kwargs):
|
|
self._testcase = testcase
|
|
subprocess.Popen.__init__(self, *args, **kwargs)
|
|
|
|
def _execute_child(self, *args, **kwargs):
|
|
try:
|
|
subprocess.Popen._execute_child(self, *args, **kwargs)
|
|
finally:
|
|
# Open a bunch of file descriptors and verify that
|
|
# none of them are the same as the ones the Popen
|
|
# instance is using for stdin/stdout/stderr.
|
|
devzero_fds = [os.open("/dev/zero", os.O_RDONLY)
|
|
for _ in range(8)]
|
|
try:
|
|
for fd in devzero_fds:
|
|
self._testcase.assertNotIn(
|
|
fd, (self.stdin.fileno(), self.stdout.fileno(),
|
|
self.stderr.fileno()),
|
|
msg="At least one fd was closed early.")
|
|
finally:
|
|
for fd in devzero_fds:
|
|
os.close(fd)
|
|
|
|
@unittest.skipIf(not os.path.exists("/dev/zero"), "/dev/zero required.")
|
|
def test_preexec_errpipe_does_not_double_close_pipes(self):
|
|
"""Issue16140: Don't double close pipes on preexec error."""
|
|
|
|
def raise_it():
|
|
raise RuntimeError("force the _execute_child() errpipe_data path.")
|
|
|
|
with self.assertRaises(RuntimeError):
|
|
self._TestExecuteChildPopen(
|
|
self, [sys.executable, "-c", "pass"],
|
|
stdin=subprocess.PIPE, stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE, preexec_fn=raise_it)
|
|
|
|
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.
|
|
# Also set the SIGINT handler to the default to make sure it's not
|
|
# being ignored (some tests rely on that.)
|
|
old_handler = signal.signal(signal.SIGINT, signal.default_int_handler)
|
|
try:
|
|
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)
|
|
finally:
|
|
signal.signal(signal.SIGINT, old_handler)
|
|
# Wait for the interpreter to be completely initialized before
|
|
# sending any signal.
|
|
p.stdout.read(1)
|
|
getattr(p, method)(*args)
|
|
return p
|
|
|
|
@unittest.skipIf(sys.platform.startswith(('netbsd', 'openbsd')),
|
|
"Due to known OS bug (issue #16762)")
|
|
def _kill_dead_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()
|
|
"""],
|
|
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)
|
|
# The process should end after this
|
|
time.sleep(1)
|
|
# This shouldn't raise even though the child is now dead
|
|
getattr(p, method)(*args)
|
|
p.communicate()
|
|
|
|
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 test_send_signal_dead(self):
|
|
# Sending a signal to a dead process
|
|
self._kill_dead_process('send_signal', signal.SIGINT)
|
|
|
|
def test_kill_dead(self):
|
|
# Killing a dead process
|
|
self._kill_dead_process('kill')
|
|
|
|
def test_terminate_dead(self):
|
|
# Terminating a dead process
|
|
self._kill_dead_process('terminate')
|
|
|
|
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_small_errpipe_write_fd(self):
|
|
"""Issue #15798: Popen should work when stdio fds are available."""
|
|
new_stdin = os.dup(0)
|
|
new_stdout = os.dup(1)
|
|
try:
|
|
os.close(0)
|
|
os.close(1)
|
|
|
|
# Side test: if errpipe_write fails to have its CLOEXEC
|
|
# flag set this should cause the parent to think the exec
|
|
# failed. Extremely unlikely: everyone supports CLOEXEC.
|
|
subprocess.Popen([
|
|
sys.executable, "-c",
|
|
"print('AssertionError:0:CLOEXEC failure.')"]).wait()
|
|
finally:
|
|
# Restore original stdin and stdout
|
|
os.dup2(new_stdin, 0)
|
|
os.dup2(new_stdout, 1)
|
|
os.close(new_stdin)
|
|
os.close(new_stdout)
|
|
|
|
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 check_swap_fds(self, stdin_no, stdout_no, stderr_no):
|
|
# open up some temporary files
|
|
temps = [mkstemp() for i in range(3)]
|
|
temp_fds = [fd for fd, fname in temps]
|
|
try:
|
|
# unlink the files -- we won't need to reopen them
|
|
for fd, fname in temps:
|
|
os.unlink(fname)
|
|
|
|
# save a copy of the standard file descriptors
|
|
saved_fds = [os.dup(fd) for fd in range(3)]
|
|
try:
|
|
# duplicate the temp files over the standard fd's 0, 1, 2
|
|
for fd, temp_fd in enumerate(temp_fds):
|
|
os.dup2(temp_fd, fd)
|
|
|
|
# write some data to what will become stdin, and rewind
|
|
os.write(stdin_no, b"STDIN")
|
|
os.lseek(stdin_no, 0, 0)
|
|
|
|
# now use those files in the given 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=stdin_no,
|
|
stdout=stdout_no,
|
|
stderr=stderr_no)
|
|
p.wait()
|
|
|
|
for fd in temp_fds:
|
|
os.lseek(fd, 0, 0)
|
|
|
|
out = os.read(stdout_no, 1024)
|
|
err = support.strip_python_stderr(os.read(stderr_no, 1024))
|
|
finally:
|
|
for std, saved in enumerate(saved_fds):
|
|
os.dup2(saved, std)
|
|
os.close(saved)
|
|
|
|
self.assertEqual(out, b"got STDIN")
|
|
self.assertEqual(err, b"err")
|
|
|
|
finally:
|
|
for fd in temp_fds:
|
|
os.close(fd)
|
|
|
|
# When duping fds, if there arises a situation where one of the fds is
|
|
# either 0, 1 or 2, it is possible that it is overwritten (#12607).
|
|
# This tests all combinations of this.
|
|
def test_swap_fds(self):
|
|
self.check_swap_fds(0, 1, 2)
|
|
self.check_swap_fds(0, 2, 1)
|
|
self.check_swap_fds(1, 0, 2)
|
|
self.check_swap_fds(1, 2, 0)
|
|
self.check_swap_fds(2, 0, 1)
|
|
self.check_swap_fds(2, 1, 0)
|
|
|
|
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)
|
|
def kill_p1():
|
|
try:
|
|
p1.terminate()
|
|
except ProcessLookupError:
|
|
pass
|
|
def kill_p2():
|
|
try:
|
|
p2.terminate()
|
|
except ProcessLookupError:
|
|
pass
|
|
self.addCleanup(kill_p1)
|
|
self.addCleanup(kill_p2)
|
|
|
|
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)
|
|
# add a bunch more fds
|
|
for _ in range(9):
|
|
fd = os.open("/dev/null", os.O_RDONLY)
|
|
self.addCleanup(os.close, fd)
|
|
open_fds.add(fd)
|
|
|
|
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")
|
|
|
|
# Keep some of the fd's we opened open in the subprocess.
|
|
# This tests _posixsubprocess.c's proper handling of fds_to_keep.
|
|
fds_to_keep = set(open_fds.pop() for _ in range(8))
|
|
p = subprocess.Popen([sys.executable, fd_status],
|
|
stdout=subprocess.PIPE, close_fds=True,
|
|
pass_fds=())
|
|
output, ignored = p.communicate()
|
|
remaining_fds = set(map(int, output.split(b',')))
|
|
|
|
self.assertFalse(remaining_fds & fds_to_keep & open_fds,
|
|
"Some fds not in pass_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()
|
|
|
|
def test_zombie_fast_process_del(self):
|
|
# Issue #12650: on Unix, if Popen.__del__() was called before the
|
|
# process exited, it wouldn't be added to subprocess._active, and would
|
|
# remain a zombie.
|
|
# spawn a Popen, and delete its reference before it exits
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import sys, time;'
|
|
'time.sleep(0.2)'],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
self.addCleanup(p.stdout.close)
|
|
self.addCleanup(p.stderr.close)
|
|
ident = id(p)
|
|
pid = p.pid
|
|
del p
|
|
# check that p is in the active processes list
|
|
self.assertIn(ident, [id(o) for o in subprocess._active])
|
|
|
|
def test_leak_fast_process_del_killed(self):
|
|
# Issue #12650: on Unix, if Popen.__del__() was called before the
|
|
# process exited, and the process got killed by a signal, it would never
|
|
# be removed from subprocess._active, which triggered a FD and memory
|
|
# leak.
|
|
# spawn a Popen, delete its reference and kill it
|
|
p = subprocess.Popen([sys.executable, "-c",
|
|
'import time;'
|
|
'time.sleep(3)'],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
self.addCleanup(p.stdout.close)
|
|
self.addCleanup(p.stderr.close)
|
|
ident = id(p)
|
|
pid = p.pid
|
|
del p
|
|
os.kill(pid, signal.SIGKILL)
|
|
# check that p is in the active processes list
|
|
self.assertIn(ident, [id(o) for o in subprocess._active])
|
|
|
|
# let some time for the process to exit, and create a new Popen: this
|
|
# should trigger the wait() of p
|
|
time.sleep(0.2)
|
|
with self.assertRaises(EnvironmentError) as c:
|
|
with subprocess.Popen(['nonexisting_i_hope'],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE) as proc:
|
|
pass
|
|
# p should have been wait()ed on, and removed from the _active list
|
|
self.assertRaises(OSError, os.waitpid, pid, 0)
|
|
self.assertNotIn(ident, [id(o) for o in subprocess._active])
|
|
|
|
def test_close_fds_after_preexec(self):
|
|
fd_status = support.findfile("fd_status.py", subdir="subprocessdata")
|
|
|
|
# this FD is used as dup2() target by preexec_fn, and should be closed
|
|
# in the child process
|
|
fd = os.dup(1)
|
|
self.addCleanup(os.close, fd)
|
|
|
|
p = subprocess.Popen([sys.executable, fd_status],
|
|
stdout=subprocess.PIPE, close_fds=True,
|
|
preexec_fn=lambda: os.dup2(1, fd))
|
|
output, ignored = p.communicate()
|
|
|
|
remaining_fds = set(map(int, output.split(b',')))
|
|
|
|
self.assertNotIn(fd, remaining_fds)
|
|
|
|
|
|
@unittest.skipUnless(mswindows, "Windows specific tests")
|
|
class Win32ProcessTestCase(BaseTestCase):
|
|
|
|
def test_startupinfo(self):
|
|
# startupinfo argument
|
|
# We uses hardcoded constants, because we do not want to
|
|
# depend on win32all.
|
|
STARTF_USESHOWWINDOW = 1
|
|
SW_MAXIMIZE = 3
|
|
startupinfo = subprocess.STARTUPINFO()
|
|
startupinfo.dwFlags = STARTF_USESHOWWINDOW
|
|
startupinfo.wShowWindow = SW_MAXIMIZE
|
|
# Since Python is a console process, it won't be affected
|
|
# by wShowWindow, but the argument should be silently
|
|
# ignored
|
|
subprocess.call([sys.executable, "-c", "import sys; sys.exit(0)"],
|
|
startupinfo=startupinfo)
|
|
|
|
def test_creationflags(self):
|
|
# creationflags argument
|
|
CREATE_NEW_CONSOLE = 16
|
|
sys.stderr.write(" a DOS box should flash briefly ...\n")
|
|
subprocess.call(sys.executable +
|
|
' -c "import time; time.sleep(0.25)"',
|
|
creationflags=CREATE_NEW_CONSOLE)
|
|
|
|
def test_invalid_args(self):
|
|
# invalid arguments should raise ValueError
|
|
self.assertRaises(ValueError, subprocess.call,
|
|
[sys.executable, "-c",
|
|
"import sys; sys.exit(47)"],
|
|
preexec_fn=lambda: 1)
|
|
self.assertRaises(ValueError, subprocess.call,
|
|
[sys.executable, "-c",
|
|
"import sys; sys.exit(47)"],
|
|
stdout=subprocess.PIPE,
|
|
close_fds=True)
|
|
|
|
def test_close_fds(self):
|
|
# close file descriptors
|
|
rc = subprocess.call([sys.executable, "-c",
|
|
"import sys; sys.exit(47)"],
|
|
close_fds=True)
|
|
self.assertEqual(rc, 47)
|
|
|
|
def test_shell_sequence(self):
|
|
# Run command through the shell (sequence)
|
|
newenv = os.environ.copy()
|
|
newenv["FRUIT"] = "physalis"
|
|
p = subprocess.Popen(["set"], shell=1,
|
|
stdout=subprocess.PIPE,
|
|
env=newenv)
|
|
self.addCleanup(p.stdout.close)
|
|
self.assertIn(b"physalis", p.stdout.read())
|
|
|
|
def test_shell_string(self):
|
|
# Run command through the shell (string)
|
|
newenv = os.environ.copy()
|
|
newenv["FRUIT"] = "physalis"
|
|
p = subprocess.Popen("set", shell=1,
|
|
stdout=subprocess.PIPE,
|
|
env=newenv)
|
|
self.addCleanup(p.stdout.close)
|
|
self.assertIn(b"physalis", p.stdout.read())
|
|
|
|
def test_call_string(self):
|
|
# call() function with string argument on Windows
|
|
rc = subprocess.call(sys.executable +
|
|
' -c "import sys; sys.exit(47)"')
|
|
self.assertEqual(rc, 47)
|
|
|
|
def _kill_process(self, method, *args):
|
|
# Some win32 buildbot raises EOFError if stdin is inherited
|
|
p = subprocess.Popen([sys.executable, "-c", """if 1:
|
|
import sys, time
|
|
sys.stdout.write('x\\n')
|
|
sys.stdout.flush()
|
|
time.sleep(30)
|
|
"""],
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
self.addCleanup(p.stdout.close)
|
|
self.addCleanup(p.stderr.close)
|
|
self.addCleanup(p.stdin.close)
|
|
# Wait for the interpreter to be completely initialized before
|
|
# sending any signal.
|
|
p.stdout.read(1)
|
|
getattr(p, method)(*args)
|
|
_, stderr = p.communicate()
|
|
self.assertStderrEqual(stderr, b'')
|
|
returncode = p.wait()
|
|
self.assertNotEqual(returncode, 0)
|
|
|
|
def _kill_dead_process(self, method, *args):
|
|
p = subprocess.Popen([sys.executable, "-c", """if 1:
|
|
import sys, time
|
|
sys.stdout.write('x\\n')
|
|
sys.stdout.flush()
|
|
sys.exit(42)
|
|
"""],
|
|
stdin=subprocess.PIPE,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE)
|
|
self.addCleanup(p.stdout.close)
|
|
self.addCleanup(p.stderr.close)
|
|
self.addCleanup(p.stdin.close)
|
|
# Wait for the interpreter to be completely initialized before
|
|
# sending any signal.
|
|
p.stdout.read(1)
|
|
# The process should end after this
|
|
time.sleep(1)
|
|
# This shouldn't raise even though the child is now dead
|
|
getattr(p, method)(*args)
|
|
_, stderr = p.communicate()
|
|
self.assertStderrEqual(stderr, b'')
|
|
rc = p.wait()
|
|
self.assertEqual(rc, 42)
|
|
|
|
def test_send_signal(self):
|
|
self._kill_process('send_signal', signal.SIGTERM)
|
|
|
|
def test_kill(self):
|
|
self._kill_process('kill')
|
|
|
|
def test_terminate(self):
|
|
self._kill_process('terminate')
|
|
|
|
def test_send_signal_dead(self):
|
|
self._kill_dead_process('send_signal', signal.SIGTERM)
|
|
|
|
def test_kill_dead(self):
|
|
self._kill_dead_process('kill')
|
|
|
|
def test_terminate_dead(self):
|
|
self._kill_dead_process('terminate')
|
|
|
|
class CommandTests(unittest.TestCase):
|
|
def test_getoutput(self):
|
|
self.assertEqual(subprocess.getoutput('echo xyzzy'), 'xyzzy')
|
|
self.assertEqual(subprocess.getstatusoutput('echo xyzzy'),
|
|
(0, 'xyzzy'))
|
|
|
|
# we use mkdtemp in the next line to create an empty directory
|
|
# under our exclusive control; from that, we can invent a pathname
|
|
# that we _know_ won't exist. This is guaranteed to fail.
|
|
dir = None
|
|
try:
|
|
dir = tempfile.mkdtemp()
|
|
name = os.path.join(dir, "foo")
|
|
status, output = subprocess.getstatusoutput(
|
|
("type " if mswindows else "cat ") + name)
|
|
self.assertNotEqual(status, 0)
|
|
finally:
|
|
if dir is not None:
|
|
os.rmdir(dir)
|
|
|
|
|
|
@unittest.skipUnless(getattr(subprocess, '_has_poll', False),
|
|
"poll system call not supported")
|
|
class ProcessTestCaseNoPoll(ProcessTestCase):
|
|
def setUp(self):
|
|
subprocess._has_poll = False
|
|
ProcessTestCase.setUp(self)
|
|
|
|
def tearDown(self):
|
|
subprocess._has_poll = True
|
|
ProcessTestCase.tearDown(self)
|
|
|
|
|
|
class HelperFunctionTests(unittest.TestCase):
|
|
@unittest.skipIf(mswindows, "errno and EINTR make no sense on windows")
|
|
def test_eintr_retry_call(self):
|
|
record_calls = []
|
|
def fake_os_func(*args):
|
|
record_calls.append(args)
|
|
if len(record_calls) == 2:
|
|
raise OSError(errno.EINTR, "fake interrupted system call")
|
|
return tuple(reversed(args))
|
|
|
|
self.assertEqual((999, 256),
|
|
subprocess._eintr_retry_call(fake_os_func, 256, 999))
|
|
self.assertEqual([(256, 999)], record_calls)
|
|
# This time there will be an EINTR so it will loop once.
|
|
self.assertEqual((666,),
|
|
subprocess._eintr_retry_call(fake_os_func, 666))
|
|
self.assertEqual([(256, 999), (666,), (666,)], record_calls)
|
|
|
|
|
|
@unittest.skipUnless(mswindows, "Windows-specific tests")
|
|
class CommandsWithSpaces (BaseTestCase):
|
|
|
|
def setUp(self):
|
|
super().setUp()
|
|
f, fname = mkstemp(".py", "te st")
|
|
self.fname = fname.lower ()
|
|
os.write(f, b"import sys;"
|
|
b"sys.stdout.write('%d %s' % (len(sys.argv), [a.lower () for a in sys.argv]))"
|
|
)
|
|
os.close(f)
|
|
|
|
def tearDown(self):
|
|
os.remove(self.fname)
|
|
super().tearDown()
|
|
|
|
def with_spaces(self, *args, **kwargs):
|
|
kwargs['stdout'] = subprocess.PIPE
|
|
p = subprocess.Popen(*args, **kwargs)
|
|
self.addCleanup(p.stdout.close)
|
|
self.assertEqual(
|
|
p.stdout.read ().decode("mbcs"),
|
|
"2 [%r, 'ab cd']" % self.fname
|
|
)
|
|
|
|
def test_shell_string_with_spaces(self):
|
|
# call() function with string argument with spaces on Windows
|
|
self.with_spaces('"%s" "%s" "%s"' % (sys.executable, self.fname,
|
|
"ab cd"), shell=1)
|
|
|
|
def test_shell_sequence_with_spaces(self):
|
|
# call() function with sequence argument with spaces on Windows
|
|
self.with_spaces([sys.executable, self.fname, "ab cd"], shell=1)
|
|
|
|
def test_noshell_string_with_spaces(self):
|
|
# call() function with string argument with spaces on Windows
|
|
self.with_spaces('"%s" "%s" "%s"' % (sys.executable, self.fname,
|
|
"ab cd"))
|
|
|
|
def test_noshell_sequence_with_spaces(self):
|
|
# call() function with sequence argument with spaces on Windows
|
|
self.with_spaces([sys.executable, self.fname, "ab cd"])
|
|
|
|
|
|
class ContextManagerTests(BaseTestCase):
|
|
|
|
def test_pipe(self):
|
|
with subprocess.Popen([sys.executable, "-c",
|
|
"import sys;"
|
|
"sys.stdout.write('stdout');"
|
|
"sys.stderr.write('stderr');"],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE) as proc:
|
|
self.assertEqual(proc.stdout.read(), b"stdout")
|
|
self.assertStderrEqual(proc.stderr.read(), b"stderr")
|
|
|
|
self.assertTrue(proc.stdout.closed)
|
|
self.assertTrue(proc.stderr.closed)
|
|
|
|
def test_returncode(self):
|
|
with subprocess.Popen([sys.executable, "-c",
|
|
"import sys; sys.exit(100)"]) as proc:
|
|
pass
|
|
# __exit__ calls wait(), so the returncode should be set
|
|
self.assertEqual(proc.returncode, 100)
|
|
|
|
def test_communicate_stdin(self):
|
|
with subprocess.Popen([sys.executable, "-c",
|
|
"import sys;"
|
|
"sys.exit(sys.stdin.read() == 'context')"],
|
|
stdin=subprocess.PIPE) as proc:
|
|
proc.communicate(b"context")
|
|
self.assertEqual(proc.returncode, 1)
|
|
|
|
def test_invalid_args(self):
|
|
with self.assertRaises(FileNotFoundError) as c:
|
|
with subprocess.Popen(['nonexisting_i_hope'],
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE) as proc:
|
|
pass
|
|
|
|
|
|
def test_main():
|
|
unit_tests = (ProcessTestCase,
|
|
POSIXProcessTestCase,
|
|
Win32ProcessTestCase,
|
|
CommandTests,
|
|
ProcessTestCaseNoPoll,
|
|
HelperFunctionTests,
|
|
CommandsWithSpaces,
|
|
ContextManagerTests,
|
|
)
|
|
|
|
support.run_unittest(*unit_tests)
|
|
support.reap_children()
|
|
|
|
if __name__ == "__main__":
|
|
unittest.main()
|