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-rw-r--r--lib/python2.7/test/test_subprocess.py1397
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diff --git a/lib/python2.7/test/test_subprocess.py b/lib/python2.7/test/test_subprocess.py
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+++ b/lib/python2.7/test/test_subprocess.py
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+import unittest
+from test import test_support
+import subprocess
+import sys
+import signal
+import os
+import errno
+import tempfile
+import time
+import re
+import sysconfig
+
+try:
+ import resource
+except ImportError:
+ resource = None
+
+mswindows = (sys.platform == "win32")
+
+#
+# Depends on the following external programs: Python
+#
+
+if mswindows:
+ SETBINARY = ('import msvcrt; msvcrt.setmode(sys.stdout.fileno(), '
+ 'os.O_BINARY);')
+else:
+ SETBINARY = ''
+
+
+try:
+ mkstemp = tempfile.mkstemp
+except AttributeError:
+ # tempfile.mkstemp is not available
+ def mkstemp():
+ """Replacement for mkstemp, calling mktemp."""
+ fname = tempfile.mktemp()
+ return os.open(fname, os.O_RDWR|os.O_CREAT), fname
+
+
+class BaseTestCase(unittest.TestCase):
+ def setUp(self):
+ # Try to minimize the number of children we have so this test
+ # doesn't crash on some buildbots (Alphas in particular).
+ test_support.reap_children()
+
+ def tearDown(self):
+ for inst in subprocess._active:
+ inst.wait()
+ subprocess._cleanup()
+ self.assertFalse(subprocess._active, "subprocess._active not empty")
+
+ def assertStderrEqual(self, stderr, expected, msg=None):
+ # In a debug build, stuff like "[6580 refs]" is printed to stderr at
+ # shutdown time. That frustrates tests trying to check stderr produced
+ # from a spawned Python process.
+ actual = re.sub(r"\[\d+ refs\]\r?\n?$", "", stderr)
+ self.assertEqual(actual, expected, msg)
+
+
+class PopenTestException(Exception):
+ pass
+
+
+class PopenExecuteChildRaises(subprocess.Popen):
+ """Popen subclass for testing cleanup of subprocess.PIPE filehandles when
+ _execute_child fails.
+ """
+ def _execute_child(self, *args, **kwargs):
+ raise PopenTestException("Forced Exception for Test")
+
+
+class ProcessTestCase(BaseTestCase):
+
+ def test_call_seq(self):
+ # call() function with sequence argument
+ rc = subprocess.call([sys.executable, "-c",
+ "import sys; sys.exit(47)"])
+ self.assertEqual(rc, 47)
+
+ def test_check_call_zero(self):
+ # check_call() function with zero return code
+ rc = subprocess.check_call([sys.executable, "-c",
+ "import sys; sys.exit(0)"])
+ self.assertEqual(rc, 0)
+
+ def test_check_call_nonzero(self):
+ # check_call() function with non-zero return code
+ with self.assertRaises(subprocess.CalledProcessError) as c:
+ subprocess.check_call([sys.executable, "-c",
+ "import sys; sys.exit(47)"])
+ self.assertEqual(c.exception.returncode, 47)
+
+ def test_check_output(self):
+ # check_output() function with zero return code
+ output = subprocess.check_output(
+ [sys.executable, "-c", "print 'BDFL'"])
+ self.assertIn('BDFL', output)
+
+ def test_check_output_nonzero(self):
+ # check_call() function with non-zero return code
+ with self.assertRaises(subprocess.CalledProcessError) as c:
+ subprocess.check_output(
+ [sys.executable, "-c", "import sys; sys.exit(5)"])
+ self.assertEqual(c.exception.returncode, 5)
+
+ def test_check_output_stderr(self):
+ # check_output() function stderr redirected to stdout
+ output = subprocess.check_output(
+ [sys.executable, "-c", "import sys; sys.stderr.write('BDFL')"],
+ stderr=subprocess.STDOUT)
+ self.assertIn('BDFL', output)
+
+ def test_check_output_stdout_arg(self):
+ # check_output() function stderr redirected to stdout
+ with self.assertRaises(ValueError) as c:
+ output = subprocess.check_output(
+ [sys.executable, "-c", "print 'will not be run'"],
+ stdout=sys.stdout)
+ self.fail("Expected ValueError when stdout arg supplied.")
+ self.assertIn('stdout', c.exception.args[0])
+
+ def test_call_kwargs(self):
+ # call() function with keyword args
+ newenv = os.environ.copy()
+ newenv["FRUIT"] = "banana"
+ rc = subprocess.call([sys.executable, "-c",
+ 'import sys, os;'
+ 'sys.exit(os.getenv("FRUIT")=="banana")'],
+ env=newenv)
+ self.assertEqual(rc, 1)
+
+ def test_invalid_args(self):
+ # Popen() called with invalid arguments should raise TypeError
+ # but Popen.__del__ should not complain (issue #12085)
+ with test_support.captured_stderr() as s:
+ self.assertRaises(TypeError, subprocess.Popen, invalid_arg_name=1)
+ argcount = subprocess.Popen.__init__.__code__.co_argcount
+ too_many_args = [0] * (argcount + 1)
+ self.assertRaises(TypeError, subprocess.Popen, *too_many_args)
+ self.assertEqual(s.getvalue(), '')
+
+ def test_stdin_none(self):
+ # .stdin is None when not redirected
+ p = subprocess.Popen([sys.executable, "-c", 'print "banana"'],
+ stdout=subprocess.PIPE, stderr=subprocess.PIPE)
+ self.addCleanup(p.stdout.close)
+ self.addCleanup(p.stderr.close)
+ p.wait()
+ self.assertEqual(p.stdin, None)
+
+ def test_stdout_none(self):
+ # .stdout is None when not redirected, and the child's stdout will
+ # be inherited from the parent. In order to test this we run a
+ # subprocess in a subprocess:
+ # this_test
+ # \-- subprocess created by this test (parent)
+ # \-- subprocess created by the parent subprocess (child)
+ # The parent doesn't specify stdout, so the child will use the
+ # parent's stdout. This test checks that the message printed by the
+ # child goes to the parent stdout. The parent also checks that the
+ # child's stdout is None. See #11963.
+ code = ('import sys; from subprocess import Popen, PIPE;'
+ 'p = Popen([sys.executable, "-c", "print \'test_stdout_none\'"],'
+ ' stdin=PIPE, stderr=PIPE);'
+ 'p.wait(); assert p.stdout is None;')
+ 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(), 'test_stdout_none')
+
+ def test_stderr_none(self):
+ # .stderr is None when not redirected
+ p = subprocess.Popen([sys.executable, "-c", 'print "banana"'],
+ stdin=subprocess.PIPE, stdout=subprocess.PIPE)
+ self.addCleanup(p.stdout.close)
+ self.addCleanup(p.stdin.close)
+ p.wait()
+ self.assertEqual(p.stderr, None)
+
+ def test_executable_with_cwd(self):
+ python_dir = os.path.dirname(os.path.realpath(sys.executable))
+ p = subprocess.Popen(["somethingyoudonthave", "-c",
+ "import sys; sys.exit(47)"],
+ executable=sys.executable, cwd=python_dir)
+ p.wait()
+ self.assertEqual(p.returncode, 47)
+
+ @unittest.skipIf(sysconfig.is_python_build(),
+ "need an installed Python. See #7774")
+ def test_executable_without_cwd(self):
+ # For a normal installation, it should work without 'cwd'
+ # argument. For test runs in the build directory, see #7774.
+ p = subprocess.Popen(["somethingyoudonthave", "-c",
+ "import sys; sys.exit(47)"],
+ executable=sys.executable)
+ p.wait()
+ self.assertEqual(p.returncode, 47)
+
+ def test_stdin_pipe(self):
+ # stdin redirection
+ p = subprocess.Popen([sys.executable, "-c",
+ 'import sys; sys.exit(sys.stdin.read() == "pear")'],
+ stdin=subprocess.PIPE)
+ p.stdin.write("pear")
+ p.stdin.close()
+ p.wait()
+ self.assertEqual(p.returncode, 1)
+
+ def test_stdin_filedes(self):
+ # stdin is set to open file descriptor
+ tf = tempfile.TemporaryFile()
+ d = tf.fileno()
+ os.write(d, "pear")
+ os.lseek(d, 0, 0)
+ p = subprocess.Popen([sys.executable, "-c",
+ 'import sys; sys.exit(sys.stdin.read() == "pear")'],
+ stdin=d)
+ p.wait()
+ self.assertEqual(p.returncode, 1)
+
+ def test_stdin_fileobj(self):
+ # stdin is set to open file object
+ tf = tempfile.TemporaryFile()
+ tf.write("pear")
+ tf.seek(0)
+ p = subprocess.Popen([sys.executable, "-c",
+ 'import sys; sys.exit(sys.stdin.read() == "pear")'],
+ stdin=tf)
+ p.wait()
+ self.assertEqual(p.returncode, 1)
+
+ def test_stdout_pipe(self):
+ # stdout redirection
+ p = subprocess.Popen([sys.executable, "-c",
+ 'import sys; sys.stdout.write("orange")'],
+ stdout=subprocess.PIPE)
+ self.addCleanup(p.stdout.close)
+ self.assertEqual(p.stdout.read(), "orange")
+
+ def test_stdout_filedes(self):
+ # stdout is set to open file descriptor
+ tf = tempfile.TemporaryFile()
+ d = tf.fileno()
+ p = subprocess.Popen([sys.executable, "-c",
+ 'import sys; sys.stdout.write("orange")'],
+ stdout=d)
+ p.wait()
+ os.lseek(d, 0, 0)
+ self.assertEqual(os.read(d, 1024), "orange")
+
+ def test_stdout_fileobj(self):
+ # stdout is set to open file object
+ tf = tempfile.TemporaryFile()
+ p = subprocess.Popen([sys.executable, "-c",
+ 'import sys; sys.stdout.write("orange")'],
+ stdout=tf)
+ p.wait()
+ tf.seek(0)
+ self.assertEqual(tf.read(), "orange")
+
+ def test_stderr_pipe(self):
+ # 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(), "strawberry")
+
+ def test_stderr_filedes(self):
+ # stderr is set to open file descriptor
+ tf = tempfile.TemporaryFile()
+ 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), "strawberry")
+
+ def test_stderr_fileobj(self):
+ # stderr is set to open file object
+ tf = tempfile.TemporaryFile()
+ p = subprocess.Popen([sys.executable, "-c",
+ 'import sys; sys.stderr.write("strawberry")'],
+ stderr=tf)
+ p.wait()
+ tf.seek(0)
+ self.assertStderrEqual(tf.read(), "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(), "appleorange")
+
+ def test_stdout_stderr_file(self):
+ # capture stdout and stderr to the same open file
+ tf = tempfile.TemporaryFile()
+ 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(), "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(), '
+ '\'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(), 'test with stdout=1')
+
+ def test_cwd(self):
+ tmpdir = tempfile.gettempdir()
+ # We cannot use os.path.realpath to canonicalize the path,
+ # since it doesn't expand Tru64 {memb} strings. See bug 1063571.
+ cwd = os.getcwd()
+ os.chdir(tmpdir)
+ tmpdir = os.getcwd()
+ os.chdir(cwd)
+ p = subprocess.Popen([sys.executable, "-c",
+ 'import sys,os;'
+ 'sys.stdout.write(os.getcwd())'],
+ stdout=subprocess.PIPE,
+ cwd=tmpdir)
+ self.addCleanup(p.stdout.close)
+ normcase = os.path.normcase
+ self.assertEqual(normcase(p.stdout.read()), normcase(tmpdir))
+
+ def test_env(self):
+ newenv = os.environ.copy()
+ newenv["FRUIT"] = "orange"
+ p = subprocess.Popen([sys.executable, "-c",
+ 'import sys,os;'
+ 'sys.stdout.write(os.getenv("FRUIT"))'],
+ stdout=subprocess.PIPE,
+ env=newenv)
+ self.addCleanup(p.stdout.close)
+ self.assertEqual(p.stdout.read(), "orange")
+
+ def test_communicate_stdin(self):
+ p = subprocess.Popen([sys.executable, "-c",
+ 'import sys;'
+ 'sys.exit(sys.stdin.read() == "pear")'],
+ stdin=subprocess.PIPE)
+ p.communicate("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, "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, "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("banana")
+ self.assertEqual(stdout, "banana")
+ self.assertStderrEqual(stderr, "pineapple")
+
+ # This test is Linux 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")
+ # Test for the fd leak reported in http://bugs.python.org/issue2791.
+ def test_communicate_pipe_fd_leak(self):
+ fd_directory = '/proc/%d/fd' % os.getpid()
+ num_fds_before_popen = len(os.listdir(fd_directory))
+ p = subprocess.Popen([sys.executable, "-c", "print()"],
+ stdout=subprocess.PIPE)
+ p.communicate()
+ num_fds_after_communicate = len(os.listdir(fd_directory))
+ del p
+ num_fds_after_destruction = len(os.listdir(fd_directory))
+ self.assertEqual(num_fds_before_popen, num_fds_after_destruction)
+ self.assertEqual(num_fds_before_popen, num_fds_after_communicate)
+
+ 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()
+ if mswindows:
+ pipe_buf = 512
+ else:
+ pipe_buf = os.fpathconf(x, "PC_PIPE_BUF")
+ 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("xyz"*%d);'
+ 'sys.stdout.write(sys.stdin.read())' % pipe_buf],
+ 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 = "abc"*pipe_buf
+ (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("banana")
+ (stdout, stderr) = p.communicate("split")
+ self.assertEqual(stdout, "bananasplit")
+ self.assertStderrEqual(stderr, "")
+
+ def test_universal_newlines(self):
+ p = subprocess.Popen([sys.executable, "-c",
+ 'import sys,os;' + SETBINARY +
+ 'sys.stdout.write("line1\\n");'
+ 'sys.stdout.flush();'
+ 'sys.stdout.write("line2\\r");'
+ 'sys.stdout.flush();'
+ 'sys.stdout.write("line3\\r\\n");'
+ 'sys.stdout.flush();'
+ 'sys.stdout.write("line4\\r");'
+ 'sys.stdout.flush();'
+ 'sys.stdout.write("\\nline5");'
+ 'sys.stdout.flush();'
+ 'sys.stdout.write("\\nline6");'],
+ stdout=subprocess.PIPE,
+ universal_newlines=1)
+ self.addCleanup(p.stdout.close)
+ stdout = p.stdout.read()
+ if hasattr(file, 'newlines'):
+ # Interpreter with universal newline support
+ self.assertEqual(stdout,
+ "line1\nline2\nline3\nline4\nline5\nline6")
+ else:
+ # Interpreter without universal newline support
+ self.assertEqual(stdout,
+ "line1\nline2\rline3\r\nline4\r\nline5\nline6")
+
+ def test_universal_newlines_communicate(self):
+ # universal newlines through communicate()
+ p = subprocess.Popen([sys.executable, "-c",
+ 'import sys,os;' + SETBINARY +
+ 'sys.stdout.write("line1\\n");'
+ 'sys.stdout.flush();'
+ 'sys.stdout.write("line2\\r");'
+ 'sys.stdout.flush();'
+ 'sys.stdout.write("line3\\r\\n");'
+ 'sys.stdout.flush();'
+ 'sys.stdout.write("line4\\r");'
+ 'sys.stdout.flush();'
+ 'sys.stdout.write("\\nline5");'
+ 'sys.stdout.flush();'
+ 'sys.stdout.write("\\nline6");'],
+ stdout=subprocess.PIPE, stderr=subprocess.PIPE,
+ universal_newlines=1)
+ self.addCleanup(p.stdout.close)
+ self.addCleanup(p.stderr.close)
+ (stdout, stderr) = p.communicate()
+ if hasattr(file, 'newlines'):
+ # Interpreter with universal newline support
+ self.assertEqual(stdout,
+ "line1\nline2\nline3\nline4\nline5\nline6")
+ else:
+ # Interpreter without universal newline support
+ self.assertEqual(stdout,
+ "line1\nline2\rline3\r\nline4\r\nline5\nline6")
+
+ def test_no_leaking(self):
+ # Make sure we leak no resources
+ if not mswindows:
+ max_handles = 1026 # too much for most UNIX systems
+ else:
+ max_handles = 2050 # too much for (at least some) Windows setups
+ handles = []
+ try:
+ for i in range(max_handles):
+ try:
+ handles.append(os.open(test_support.TESTFN,
+ 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)
+ test_support.unlink(test_support.TESTFN)
+
+ 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)
+ # ignore errors that indicate the command was not found
+ if c.exception.errno not in (errno.ENOENT, errno.EACCES):
+ raise c.exception
+
+ 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("x" * 2**20)
+
+ def test_communicate_epipe_only_stdin(self):
+ # Issue 10963: communicate() should hide EPIPE
+ p = subprocess.Popen([sys.executable, "-c", 'pass'],
+ stdin=subprocess.PIPE)
+ self.addCleanup(p.stdin.close)
+ time.sleep(2)
+ p.communicate("x" * 2**20)
+
+ # 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"
+ 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.skipUnless(hasattr(signal, 'SIGALRM'),
+ "Requires signal.SIGALRM")
+ def test_communicate_eintr(self):
+ # Issue #12493: communicate() should handle EINTR
+ def handler(signum, frame):
+ pass
+ old_handler = signal.signal(signal.SIGALRM, handler)
+ self.addCleanup(signal.signal, signal.SIGALRM, old_handler)
+
+ # the process is running for 2 seconds
+ args = [sys.executable, "-c", 'import time; time.sleep(2)']
+ for stream in ('stdout', 'stderr'):
+ kw = {stream: subprocess.PIPE}
+ with subprocess.Popen(args, **kw) as process:
+ signal.alarm(1)
+ # communicate() will be interrupted by SIGALRM
+ process.communicate()
+
+
+@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.addCleanup(p.stdout.close)
+ self.assertEqual(p.stdout.read(), "apple")
+
+ 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, executable, preexec_fn, close_fds, cwd, env,
+ universal_newlines, startupinfo, creationflags, shell,
+ p2cread, p2cwrite,
+ c2pread, c2pwrite,
+ errread, errwrite):
+ try:
+ subprocess.Popen._execute_child(
+ self, args, executable, preexec_fn, close_fds,
+ cwd, env, universal_newlines,
+ startupinfo, creationflags, shell,
+ p2cread, p2cwrite,
+ c2pread, c2pwrite,
+ errread, errwrite)
+ 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, (p2cwrite, c2pread, errread))
+ finally:
+ map(os.close, devzero_fds)
+
+ @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_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.addCleanup(p.stdout.close)
+ 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.addCleanup(p.stdout.close)
+ 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 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(), sh)
+
+ def _kill_process(self, method, *args):
+ # Do not inherit file handles from the parent.
+ # It should fix failures on some platforms.
+ p = subprocess.Popen([sys.executable, "-c", """if 1:
+ import sys, time
+ sys.stdout.write('x\\n')
+ sys.stdout.flush()
+ time.sleep(30)
+ """],
+ close_fds=True,
+ stdin=subprocess.PIPE,
+ stdout=subprocess.PIPE,
+ stderr=subprocess.PIPE)
+ # Wait for the interpreter to be completely initialized before
+ # sending any signal.
+ p.stdout.read(1)
+ getattr(p, method)(*args)
+ return p
+
+ @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('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)
+
+ 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 = test_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 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 = test_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_wait_when_sigchild_ignored(self):
+ # NOTE: sigchild_ignore.py may not be an effective test on all OSes.
+ sigchild_ignore = test_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)
+
+ 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_pipe_cloexec(self):
+ # Issue 12786: check that the communication pipes' FDs are set CLOEXEC,
+ # and are not inherited by another child process.
+ p1 = subprocess.Popen([sys.executable, "-c",
+ 'import os;'
+ 'os.read(0, 1)'
+ ],
+ stdin=subprocess.PIPE, stdout=subprocess.PIPE,
+ stderr=subprocess.PIPE)
+
+ p2 = subprocess.Popen([sys.executable, "-c", """if True:
+ import os, errno, sys
+ for fd in %r:
+ try:
+ os.close(fd)
+ except OSError as e:
+ if e.errno != errno.EBADF:
+ raise
+ else:
+ sys.exit(1)
+ sys.exit(0)
+ """ % [f.fileno() for f in (p1.stdin, p1.stdout,
+ p1.stderr)]
+ ],
+ stdin=subprocess.PIPE, stdout=subprocess.PIPE,
+ stderr=subprocess.PIPE, close_fds=False)
+ p1.communicate('foo')
+ _, stderr = p2.communicate()
+
+ self.assertEqual(p2.returncode, 0, "Unexpected error: " + repr(stderr))
+
+
+@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("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("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, '')
+ 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')
+
+
+@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, "mswindows only")
+class CommandsWithSpaces (BaseTestCase):
+
+ def setUp(self):
+ super(CommandsWithSpaces, self).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(CommandsWithSpaces, self).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"])
+
+def test_main():
+ unit_tests = (ProcessTestCase,
+ POSIXProcessTestCase,
+ Win32ProcessTestCase,
+ ProcessTestCaseNoPoll,
+ HelperFunctionTests,
+ CommandsWithSpaces)
+
+ test_support.run_unittest(*unit_tests)
+ test_support.reap_children()
+
+if __name__ == "__main__":
+ test_main()
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-06 15:24:35 +0000