| 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() |
