diff options
Diffstat (limited to 'cros_utils/no_pseudo_terminal_test.py')
| -rwxr-xr-x | cros_utils/no_pseudo_terminal_test.py | 74 |
1 files changed, 37 insertions, 37 deletions
diff --git a/cros_utils/no_pseudo_terminal_test.py b/cros_utils/no_pseudo_terminal_test.py index 10fd9608..acc90af4 100755 --- a/cros_utils/no_pseudo_terminal_test.py +++ b/cros_utils/no_pseudo_terminal_test.py @@ -1,64 +1,64 @@ #!/usr/bin/env python3 # -*- coding: utf-8 -*- # -# Copyright 2019 The Chromium OS Authors. All rights reserved. +# Copyright 2019 The ChromiumOS Authors # Use of this source code is governed by a BSD-style license that can be # found in the LICENSE file. """Test to ensure we're not touching /dev/ptmx when running commands.""" -from __future__ import print_function import os import subprocess import tempfile import time import unittest + from cros_utils import command_executer class NoPsuedoTerminalTest(unittest.TestCase): - """Test to ensure we're not touching /dev/ptmx when running commands.""" + """Test to ensure we're not touching /dev/ptmx when running commands.""" - _strace_process = None - STRACE_TIMEOUT = 10 + _strace_process = None + STRACE_TIMEOUT = 10 - def _AttachStraceToSelf(self, output_file): - """Attaches strace to the current process.""" - args = ['sudo', 'strace', '-o', output_file, '-p', str(os.getpid())] - print(args) - # pylint: disable=bad-option-value, subprocess-popen-preexec-fn - self._strace_process = subprocess.Popen(args, preexec_fn=os.setpgrp) - # Wait until we see some activity. - start_time = time.time() - while time.time() - start_time < self.STRACE_TIMEOUT: - if os.path.isfile(output_file) and open(output_file).read(1): - return True - time.sleep(1) - return False + def _AttachStraceToSelf(self, output_file): + """Attaches strace to the current process.""" + args = ["sudo", "strace", "-o", output_file, "-p", str(os.getpid())] + print(args) + # pylint: disable=bad-option-value, subprocess-popen-preexec-fn + self._strace_process = subprocess.Popen(args, preexec_fn=os.setpgrp) + # Wait until we see some activity. + start_time = time.time() + while time.time() - start_time < self.STRACE_TIMEOUT: + if os.path.isfile(output_file) and open(output_file).read(1): + return True + time.sleep(1) + return False - def _KillStraceProcess(self): - """Kills strace that was started by _AttachStraceToSelf().""" - pgid = os.getpgid(self._strace_process.pid) - args = ['sudo', 'kill', str(pgid)] - if subprocess.call(args) == 0: - os.waitpid(pgid, 0) - return True - return False + def _KillStraceProcess(self): + """Kills strace that was started by _AttachStraceToSelf().""" + pgid = os.getpgid(self._strace_process.pid) + args = ["sudo", "kill", str(pgid)] + if subprocess.call(args) == 0: + os.waitpid(pgid, 0) + return True + return False - def testNoPseudoTerminalWhenRunningCommand(self): - """Test to make sure we're not touching /dev/ptmx when running commands.""" - temp_file = tempfile.mktemp() - self.assertTrue(self._AttachStraceToSelf(temp_file)) + def testNoPseudoTerminalWhenRunningCommand(self): + """Test to make sure we're not touching /dev/ptmx when running commands.""" + temp_file = tempfile.mktemp() + self.assertTrue(self._AttachStraceToSelf(temp_file)) - ce = command_executer.GetCommandExecuter() - ce.RunCommand('echo') + ce = command_executer.GetCommandExecuter() + ce.RunCommand("echo") - self.assertTrue(self._KillStraceProcess()) + self.assertTrue(self._KillStraceProcess()) - strace_contents = open(temp_file).read() - self.assertFalse('/dev/ptmx' in strace_contents) + strace_contents = open(temp_file).read() + self.assertFalse("/dev/ptmx" in strace_contents) -if __name__ == '__main__': - unittest.main() +if __name__ == "__main__": + unittest.main() |