def _test_process(self, run_as_root):
test_pid = str(os.getppid())
cmd = ['bash', '-c', '(sleep 10)']
proc = async_process.AsyncProcess(cmd, run_as_root=run_as_root)
proc.start()
self.addCleanup(self._stop_process, proc)
common_utils.wait_until_true(lambda: proc._process.pid,
sleep=0.5,
timeout=10)
bash_pid = utils.find_parent_pid(proc._process.pid)
testcase_pid = utils.find_parent_pid(bash_pid)
self.assertEqual(test_pid, testcase_pid)
def test_raises_unknown_exception(self):
with testtools.ExpectedException(RuntimeError):
self.m_execute.side_effect = RuntimeError()
utils.find_parent_pid(-1)
def test_raises_exception_returncode_0(self):
with testtools.ExpectedException(exceptions.ProcessExecutionError):
self.m_execute.side_effect = \
exceptions.ProcessExecutionError('', returncode=0)
utils.find_parent_pid(-1)
def test_returns_parent_id_for_good_ouput(self):
self.m_execute.return_value = '123 \n'
self.assertEqual(utils.find_parent_pid(-1), '123')
def test_returns_none_for_no_valid_pid(self):
self.m_execute.side_effect = exceptions.ProcessExecutionError(
'', returncode=1)
self.assertIsNone(utils.find_parent_pid(-1))