mirror of https://github.com/python/cpython
834 lines
33 KiB
Python
834 lines
33 KiB
Python
import unittest
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from test import test_support
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import subprocess
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import sys
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import signal
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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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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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test_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 = re.sub(r"\[\d+ refs\]\r?\n?$", "", stderr)
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self.assertEqual(actual, expected, msg)
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class ProcessTestCase(BaseTestCase):
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def test_call_seq(self):
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# call() function with sequence argument
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rc = subprocess.call([sys.executable, "-c",
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"import sys; sys.exit(47)"])
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self.assertEqual(rc, 47)
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def test_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('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('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_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_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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p.wait()
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self.assertEqual(p.stdin, None)
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def test_stdout_none(self):
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# .stdout is None when not redirected
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p = subprocess.Popen([sys.executable, "-c",
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'print " this bit of output is from a '
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'test of stdout in a different '
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'process ..."'],
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stdin=subprocess.PIPE, stderr=subprocess.PIPE)
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p.wait()
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self.assertEqual(p.stdout, None)
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def test_stderr_none(self):
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# .stderr is None when not redirected
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p = subprocess.Popen([sys.executable, "-c", 'print "banana"'],
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stdin=subprocess.PIPE, stdout=subprocess.PIPE)
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p.wait()
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self.assertEqual(p.stderr, None)
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def test_executable_with_cwd(self):
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python_dir = os.path.dirname(os.path.realpath(sys.executable))
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p = subprocess.Popen(["somethingyoudonthave", "-c",
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"import sys; sys.exit(47)"],
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executable=sys.executable, cwd=python_dir)
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p.wait()
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self.assertEqual(p.returncode, 47)
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@unittest.skipIf(sysconfig.is_python_build(),
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"need an installed Python. See #7774")
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def test_executable_without_cwd(self):
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# For a normal installation, it should work without 'cwd'
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# argument. For test runs in the build directory, see #7774.
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p = subprocess.Popen(["somethingyoudonthave", "-c",
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"import sys; sys.exit(47)"],
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executable=sys.executable)
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p.wait()
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self.assertEqual(p.returncode, 47)
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def test_stdin_pipe(self):
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# stdin redirection
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.exit(sys.stdin.read() == "pear")'],
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stdin=subprocess.PIPE)
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p.stdin.write("pear")
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p.stdin.close()
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p.wait()
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self.assertEqual(p.returncode, 1)
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def test_stdin_filedes(self):
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# stdin is set to open file descriptor
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tf = tempfile.TemporaryFile()
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d = tf.fileno()
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os.write(d, "pear")
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os.lseek(d, 0, 0)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.exit(sys.stdin.read() == "pear")'],
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stdin=d)
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p.wait()
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self.assertEqual(p.returncode, 1)
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def test_stdin_fileobj(self):
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# stdin is set to open file object
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tf = tempfile.TemporaryFile()
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tf.write("pear")
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tf.seek(0)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.exit(sys.stdin.read() == "pear")'],
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stdin=tf)
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p.wait()
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self.assertEqual(p.returncode, 1)
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def test_stdout_pipe(self):
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# stdout redirection
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stdout.write("orange")'],
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stdout=subprocess.PIPE)
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self.assertEqual(p.stdout.read(), "orange")
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def test_stdout_filedes(self):
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# stdout is set to open file descriptor
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tf = tempfile.TemporaryFile()
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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), "orange")
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def test_stdout_fileobj(self):
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# stdout is set to open file object
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tf = tempfile.TemporaryFile()
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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(), "orange")
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def test_stderr_pipe(self):
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# stderr redirection
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stderr.write("strawberry")'],
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stderr=subprocess.PIPE)
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self.assertStderrEqual(p.stderr.read(), "strawberry")
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def test_stderr_filedes(self):
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# stderr is set to open file descriptor
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tf = tempfile.TemporaryFile()
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d = tf.fileno()
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stderr.write("strawberry")'],
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stderr=d)
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p.wait()
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os.lseek(d, 0, 0)
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self.assertStderrEqual(os.read(d, 1024), "strawberry")
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def test_stderr_fileobj(self):
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# stderr is set to open file object
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tf = tempfile.TemporaryFile()
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stderr.write("strawberry")'],
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stderr=tf)
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p.wait()
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tf.seek(0)
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self.assertStderrEqual(tf.read(), "strawberry")
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def test_stdout_stderr_pipe(self):
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# capture stdout and stderr to the same pipe
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p = subprocess.Popen([sys.executable, "-c",
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'import sys;'
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'sys.stdout.write("apple");'
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'sys.stdout.flush();'
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'sys.stderr.write("orange")'],
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stdout=subprocess.PIPE,
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stderr=subprocess.STDOUT)
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self.assertStderrEqual(p.stdout.read(), "appleorange")
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def test_stdout_stderr_file(self):
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# capture stdout and stderr to the same open file
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tf = tempfile.TemporaryFile()
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p = subprocess.Popen([sys.executable, "-c",
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'import sys;'
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'sys.stdout.write("apple");'
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'sys.stdout.flush();'
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'sys.stderr.write("orange")'],
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stdout=tf,
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stderr=tf)
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p.wait()
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tf.seek(0)
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self.assertStderrEqual(tf.read(), "appleorange")
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def test_stdout_filedes_of_stdout(self):
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# stdout is set to 1 (#1531862).
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cmd = r"import sys, os; sys.exit(os.write(sys.stdout.fileno(), '.\n'))"
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rc = subprocess.call([sys.executable, "-c", cmd], stdout=1)
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self.assertEqual(rc, 2)
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def test_cwd(self):
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tmpdir = tempfile.gettempdir()
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# We cannot use os.path.realpath to canonicalize the path,
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# since it doesn't expand Tru64 {memb} strings. See bug 1063571.
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cwd = os.getcwd()
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os.chdir(tmpdir)
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tmpdir = os.getcwd()
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os.chdir(cwd)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;'
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'sys.stdout.write(os.getcwd())'],
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stdout=subprocess.PIPE,
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cwd=tmpdir)
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normcase = os.path.normcase
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self.assertEqual(normcase(p.stdout.read()), normcase(tmpdir))
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def test_env(self):
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newenv = os.environ.copy()
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newenv["FRUIT"] = "orange"
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;'
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'sys.stdout.write(os.getenv("FRUIT"))'],
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stdout=subprocess.PIPE,
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env=newenv)
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self.assertEqual(p.stdout.read(), "orange")
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def test_communicate_stdin(self):
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p = subprocess.Popen([sys.executable, "-c",
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'import sys;'
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'sys.exit(sys.stdin.read() == "pear")'],
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stdin=subprocess.PIPE)
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p.communicate("pear")
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self.assertEqual(p.returncode, 1)
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def test_communicate_stdout(self):
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stdout.write("pineapple")'],
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stdout=subprocess.PIPE)
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(stdout, stderr) = p.communicate()
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self.assertEqual(stdout, "pineapple")
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self.assertEqual(stderr, None)
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def test_communicate_stderr(self):
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p = subprocess.Popen([sys.executable, "-c",
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'import sys; sys.stderr.write("pineapple")'],
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stderr=subprocess.PIPE)
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(stdout, stderr) = p.communicate()
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self.assertEqual(stdout, None)
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self.assertStderrEqual(stderr, "pineapple")
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def test_communicate(self):
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;'
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'sys.stderr.write("pineapple");'
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'sys.stdout.write(sys.stdin.read())'],
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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(stdout, stderr) = p.communicate("banana")
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self.assertEqual(stdout, "banana")
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self.assertStderrEqual(stderr, "pineapple")
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# This test is Linux specific for simplicity to at least have
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# some coverage. It is not a platform specific bug.
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@unittest.skipUnless(os.path.isdir('/proc/%d/fd' % os.getpid()),
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"Linux specific")
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# Test for the fd leak reported in http://bugs.python.org/issue2791.
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def test_communicate_pipe_fd_leak(self):
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fd_directory = '/proc/%d/fd' % os.getpid()
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num_fds_before_popen = len(os.listdir(fd_directory))
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p = subprocess.Popen([sys.executable, "-c", "print()"],
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stdout=subprocess.PIPE)
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p.communicate()
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num_fds_after_communicate = len(os.listdir(fd_directory))
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del p
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num_fds_after_destruction = len(os.listdir(fd_directory))
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self.assertEqual(num_fds_before_popen, num_fds_after_destruction)
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self.assertEqual(num_fds_before_popen, num_fds_after_communicate)
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def test_communicate_returns(self):
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# communicate() should return None if no redirection is active
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p = subprocess.Popen([sys.executable, "-c",
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"import sys; sys.exit(47)"])
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(stdout, stderr) = p.communicate()
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self.assertEqual(stdout, None)
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self.assertEqual(stderr, None)
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def test_communicate_pipe_buf(self):
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# communicate() with writes larger than pipe_buf
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# This test will probably deadlock rather than fail, if
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# communicate() does not work properly.
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x, y = os.pipe()
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if mswindows:
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pipe_buf = 512
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else:
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pipe_buf = os.fpathconf(x, "PC_PIPE_BUF")
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os.close(x)
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os.close(y)
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;'
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'sys.stdout.write(sys.stdin.read(47));'
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'sys.stderr.write("xyz"*%d);'
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'sys.stdout.write(sys.stdin.read())' % pipe_buf],
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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string_to_write = "abc"*pipe_buf
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(stdout, stderr) = p.communicate(string_to_write)
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self.assertEqual(stdout, string_to_write)
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def test_writes_before_communicate(self):
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# stdin.write before communicate()
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;'
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'sys.stdout.write(sys.stdin.read())'],
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stdin=subprocess.PIPE,
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stdout=subprocess.PIPE,
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stderr=subprocess.PIPE)
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p.stdin.write("banana")
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(stdout, stderr) = p.communicate("split")
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self.assertEqual(stdout, "bananasplit")
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self.assertStderrEqual(stderr, "")
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def test_universal_newlines(self):
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;' + SETBINARY +
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'sys.stdout.write("line1\\n");'
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'sys.stdout.flush();'
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'sys.stdout.write("line2\\r");'
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'sys.stdout.flush();'
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'sys.stdout.write("line3\\r\\n");'
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'sys.stdout.flush();'
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'sys.stdout.write("line4\\r");'
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'sys.stdout.flush();'
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'sys.stdout.write("\\nline5");'
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'sys.stdout.flush();'
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'sys.stdout.write("\\nline6");'],
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stdout=subprocess.PIPE,
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universal_newlines=1)
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stdout = p.stdout.read()
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if hasattr(file, 'newlines'):
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# Interpreter with universal newline support
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self.assertEqual(stdout,
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"line1\nline2\nline3\nline4\nline5\nline6")
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else:
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# Interpreter without universal newline support
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self.assertEqual(stdout,
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"line1\nline2\rline3\r\nline4\r\nline5\nline6")
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def test_universal_newlines_communicate(self):
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# universal newlines through communicate()
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p = subprocess.Popen([sys.executable, "-c",
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'import sys,os;' + SETBINARY +
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'sys.stdout.write("line1\\n");'
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'sys.stdout.flush();'
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'sys.stdout.write("line2\\r");'
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'sys.stdout.flush();'
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'sys.stdout.write("line3\\r\\n");'
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'sys.stdout.flush();'
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'sys.stdout.write("line4\\r");'
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'sys.stdout.flush();'
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'sys.stdout.write("\\nline5");'
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'sys.stdout.flush();'
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'sys.stdout.write("\\nline6");'],
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stdout=subprocess.PIPE, stderr=subprocess.PIPE,
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universal_newlines=1)
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(stdout, stderr) = p.communicate()
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if hasattr(file, 'newlines'):
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# Interpreter with universal newline support
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self.assertEqual(stdout,
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"line1\nline2\nline3\nline4\nline5\nline6")
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else:
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# Interpreter without universal newline support
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self.assertEqual(stdout,
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"line1\nline2\rline3\r\nline4\r\nline5\nline6")
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def test_no_leaking(self):
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# Make sure we leak no resources
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if not hasattr(test_support, "is_resource_enabled") \
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or test_support.is_resource_enabled("subprocess") and not mswindows:
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max_handles = 1026 # too much for most UNIX systems
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else:
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max_handles = 65
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for i in range(max_handles):
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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("lime")[0]
|
|
self.assertEqual(data, "lime")
|
|
|
|
|
|
def test_list2cmdline(self):
|
|
self.assertEqual(subprocess.list2cmdline(['a b c', 'd', 'e']),
|
|
'"a b c" d e')
|
|
self.assertEqual(subprocess.list2cmdline(['ab"c', '\\', 'd']),
|
|
'ab\\"c \\ d')
|
|
self.assertEqual(subprocess.list2cmdline(['ab"c', ' \\', 'd']),
|
|
'ab\\"c " \\\\" d')
|
|
self.assertEqual(subprocess.list2cmdline(['a\\\\\\b', 'de fg', 'h']),
|
|
'a\\\\\\b "de fg" h')
|
|
self.assertEqual(subprocess.list2cmdline(['a\\"b', 'c', 'd']),
|
|
'a\\\\\\"b c d')
|
|
self.assertEqual(subprocess.list2cmdline(['a\\\\b c', 'd', 'e']),
|
|
'"a\\\\b c" d e')
|
|
self.assertEqual(subprocess.list2cmdline(['a\\\\b\\ c', 'd', 'e']),
|
|
'"a\\\\b\\ c" d e')
|
|
self.assertEqual(subprocess.list2cmdline(['ab', '']),
|
|
'ab ""')
|
|
|
|
|
|
def test_poll(self):
|
|
p = subprocess.Popen([sys.executable,
|
|
"-c", "import time; time.sleep(1)"])
|
|
count = 0
|
|
while p.poll() is None:
|
|
time.sleep(0.1)
|
|
count += 1
|
|
# We expect that the poll loop probably went around about 10 times,
|
|
# but, based on system scheduling we can't control, it's possible
|
|
# poll() never returned None. It "should be" very rare that it
|
|
# didn't go around at least twice.
|
|
self.assertGreaterEqual(count, 2)
|
|
# Subsequent invocations should just return the returncode
|
|
self.assertEqual(p.poll(), 0)
|
|
|
|
|
|
def test_wait(self):
|
|
p = subprocess.Popen([sys.executable,
|
|
"-c", "import time; time.sleep(2)"])
|
|
self.assertEqual(p.wait(), 0)
|
|
# Subsequent invocations should just return the returncode
|
|
self.assertEqual(p.wait(), 0)
|
|
|
|
|
|
def test_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_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)
|
|
if c.exception.errno != 2: # ignore "no such file"
|
|
raise c.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)."""
|
|
try:
|
|
import resource
|
|
self.old_limit = resource.getrlimit(resource.RLIMIT_CORE)
|
|
resource.setrlimit(resource.RLIMIT_CORE, (0, 0))
|
|
except (ImportError, ValueError, resource.error):
|
|
pass
|
|
|
|
def __exit__(self, *args):
|
|
"""Return core file behavior to default."""
|
|
if self.old_limit is None:
|
|
return
|
|
try:
|
|
import resource
|
|
resource.setrlimit(resource.RLIMIT_CORE, self.old_limit)
|
|
except (ImportError, ValueError, resource.error):
|
|
pass
|
|
|
|
|
|
@unittest.skipIf(mswindows, "POSIX specific tests")
|
|
class POSIXProcessTestCase(BaseTestCase):
|
|
|
|
def test_exceptions(self):
|
|
# caught & re-raised exceptions
|
|
with self.assertRaises(OSError) as c:
|
|
p = subprocess.Popen([sys.executable, "-c", ""],
|
|
cwd="/this/path/does/not/exist")
|
|
# The attribute child_traceback should contain "os.chdir" somewhere.
|
|
self.assertIn("os.chdir", c.exception.child_traceback)
|
|
|
|
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):
|
|
# preexec function
|
|
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.assertEqual(p.stdout.read(), "apple")
|
|
|
|
def test_args_string(self):
|
|
# args is a string
|
|
f, fname = mkstemp()
|
|
os.write(f, "#!/bin/sh\n")
|
|
os.write(f, "exec '%s' -c 'import sys; sys.exit(47)'\n" %
|
|
sys.executable)
|
|
os.close(f)
|
|
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.assertEqual(p.stdout.read().strip(), "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.assertEqual(p.stdout.read().strip(), "apple")
|
|
|
|
def test_call_string(self):
|
|
# call() function with string argument on UNIX
|
|
f, fname = mkstemp()
|
|
os.write(f, "#!/bin/sh\n")
|
|
os.write(f, "exec '%s' -c 'import sys; sys.exit(47)'\n" %
|
|
sys.executable)
|
|
os.close(f)
|
|
os.chmod(fname, 0700)
|
|
rc = subprocess.call(fname)
|
|
os.remove(fname)
|
|
self.assertEqual(rc, 47)
|
|
|
|
def _kill_process(self, method, *args):
|
|
# Do not inherit file handles from the parent.
|
|
# It should fix failures on some platforms.
|
|
p = subprocess.Popen([sys.executable, "-c", "input()"], close_fds=True,
|
|
stdin=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
|
|
# Let the process initialize (Issue #3137)
|
|
time.sleep(0.1)
|
|
# The process should not terminate prematurely
|
|
self.assertIsNone(p.poll())
|
|
# Retry if the process do not receive the signal.
|
|
count, maxcount = 0, 3
|
|
while count < maxcount and p.poll() is None:
|
|
getattr(p, method)(*args)
|
|
time.sleep(0.1)
|
|
count += 1
|
|
|
|
self.assertIsNotNone(p.poll(), "the subprocess did not terminate")
|
|
if count > 1:
|
|
print >>sys.stderr, ("p.{}{} succeeded after "
|
|
"{} attempts".format(method, args, count))
|
|
return p
|
|
|
|
def test_send_signal(self):
|
|
p = self._kill_process('send_signal', signal.SIGINT)
|
|
_, stderr = p.communicate()
|
|
self.assertIn('KeyboardInterrupt', stderr)
|
|
self.assertNotEqual(p.wait(), 0)
|
|
|
|
def test_kill(self):
|
|
p = self._kill_process('kill')
|
|
_, stderr = p.communicate()
|
|
self.assertStderrEqual(stderr, '')
|
|
self.assertEqual(p.wait(), -signal.SIGKILL)
|
|
|
|
def test_terminate(self):
|
|
p = self._kill_process('terminate')
|
|
_, stderr = p.communicate()
|
|
self.assertStderrEqual(stderr, '')
|
|
self.assertEqual(p.wait(), -signal.SIGTERM)
|
|
|
|
|
|
@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.assertIn("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.assertIn("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", "input()"],
|
|
stdin=subprocess.PIPE, stderr=subprocess.PIPE)
|
|
|
|
# Let the process initialize (Issue #3137)
|
|
time.sleep(0.1)
|
|
# The process should not terminate prematurely
|
|
self.assertIsNone(p.poll())
|
|
# Retry if the process do not receive the signal.
|
|
count, maxcount = 0, 3
|
|
while count < maxcount and p.poll() is None:
|
|
getattr(p, method)(*args)
|
|
time.sleep(0.1)
|
|
count += 1
|
|
|
|
returncode = p.poll()
|
|
self.assertIsNotNone(returncode, "the subprocess did not terminate")
|
|
if count > 1:
|
|
print >>sys.stderr, ("p.{}{} succeeded after "
|
|
"{} attempts".format(method, args, count))
|
|
_, stderr = p.communicate()
|
|
self.assertStderrEqual(stderr, '')
|
|
self.assertEqual(p.wait(), returncode)
|
|
self.assertNotEqual(returncode, 0)
|
|
|
|
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')
|
|
|
|
|
|
@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)
|
|
|
|
|
|
def test_main():
|
|
unit_tests = (ProcessTestCase,
|
|
POSIXProcessTestCase,
|
|
Win32ProcessTestCase,
|
|
ProcessTestCaseNoPoll,
|
|
HelperFunctionTests)
|
|
|
|
test_support.run_unittest(*unit_tests)
|
|
test_support.reap_children()
|
|
|
|
if __name__ == "__main__":
|
|
test_main()
|