ansible/test/units/module_utils/basic/test_run_command.py

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# -*- coding: utf-8 -*-
#
# This file is part of Ansible
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
# Make coding more python3-ish
from __future__ import (absolute_import, division)
__metaclass__ = type
import errno
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import json
import sys
import time
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from io import BytesIO, StringIO
from ansible.compat.tests import unittest
from ansible.compat.tests.mock import call, MagicMock, Mock, patch, sentinel
from units.mock.procenv import swap_stdin_and_argv
import ansible.module_utils.basic
class OpenBytesIO(BytesIO):
"""BytesIO with dummy close() method
So that you can inspect the content after close() was called.
"""
def close(self):
pass
@unittest.skipIf(sys.version_info[0] >= 3, "Python 3 is not supported on targets (yet)")
class TestAnsibleModuleRunCommand(unittest.TestCase):
def setUp(self):
self.cmd_out = {
# os.read() is returning 'bytes', not strings
sentinel.stdout: BytesIO(),
sentinel.stderr: BytesIO(),
}
def mock_os_read(fd, nbytes):
return self.cmd_out[fd].read(nbytes)
def mock_select(rlist, wlist, xlist, timeout=1):
return (rlist, [], [])
def mock_os_chdir(path):
if path == '/inaccessible':
raise OSError(errno.EPERM, "Permission denied: '/inaccessible'")
args = json.dumps(dict(ANSIBLE_MODULE_ARGS={}))
# unittest doesn't have a clean place to use a context manager, so we have to enter/exit manually
self.stdin_swap = swap_stdin_and_argv(stdin_data=args)
self.stdin_swap.__enter__()
ansible.module_utils.basic._ANSIBLE_ARGS = None
self.module = ansible.module_utils.basic.AnsibleModule(argument_spec=dict())
self.module.fail_json = MagicMock(side_effect=SystemExit)
self.os = patch('ansible.module_utils.basic.os').start()
self.os.path.expandvars.side_effect = lambda x: x
self.os.path.expanduser.side_effect = lambda x: x
self.os.environ = {'PATH': '/bin'}
self.os.getcwd.return_value = '/home/foo'
self.os.path.isdir.return_value = True
self.os.chdir.side_effect = mock_os_chdir
self.os.read.side_effect = mock_os_read
self.subprocess = patch('ansible.module_utils.basic.subprocess').start()
self.cmd = Mock()
self.cmd.returncode = 0
self.cmd.stdin = OpenBytesIO()
self.cmd.stdout.fileno.return_value = sentinel.stdout
self.cmd.stderr.fileno.return_value = sentinel.stderr
self.subprocess.Popen.return_value = self.cmd
self.select = patch('ansible.module_utils.basic.select').start()
self.select.select.side_effect = mock_select
self.addCleanup(patch.stopall)
def tearDown(self):
# unittest doesn't have a clean place to use a context manager, so we have to enter/exit manually
self.stdin_swap.__exit__(None, None, None)
def test_list_as_args(self):
self.module.run_command(['/bin/ls', 'a', ' b', 'c '])
self.assertTrue(self.subprocess.Popen.called)
args, kwargs = self.subprocess.Popen.call_args
self.assertEqual(args, (['/bin/ls', 'a', ' b', 'c '], ))
self.assertEqual(kwargs['shell'], False)
def test_str_as_args(self):
self.module.run_command('/bin/ls a " b" "c "')
self.assertTrue(self.subprocess.Popen.called)
args, kwargs = self.subprocess.Popen.call_args
self.assertEqual(args, (['/bin/ls', 'a', ' b', 'c '], ))
self.assertEqual(kwargs['shell'], False)
def test_tuple_as_args(self):
self.assertRaises(SystemExit, self.module.run_command, ('ls', '/'))
self.assertTrue(self.module.fail_json.called)
def test_unsafe_shell(self):
self.module.run_command('ls a " b" "c "', use_unsafe_shell=True)
self.assertTrue(self.subprocess.Popen.called)
args, kwargs = self.subprocess.Popen.call_args
self.assertEqual(args, ('ls a " b" "c "', ))
self.assertEqual(kwargs['shell'], True)
def test_cwd(self):
self.os.getcwd.return_value = '/old'
self.module.run_command('/bin/ls', cwd='/new')
self.assertEqual(self.os.chdir.mock_calls,
[call('/new'), call('/old'), ])
def test_cwd_not_a_dir(self):
self.os.getcwd.return_value = '/old'
self.os.path.isdir.side_effect = lambda d: d != '/not-a-dir'
self.module.run_command('/bin/ls', cwd='/not-a-dir')
self.assertEqual(self.os.chdir.mock_calls, [call('/old'), ])
def test_cwd_inaccessible(self):
self.assertRaises(SystemExit, self.module.run_command, '/bin/ls', cwd='/inaccessible')
self.assertTrue(self.module.fail_json.called)
args, kwargs = self.module.fail_json.call_args
self.assertEqual(kwargs['rc'], errno.EPERM)
def test_prompt_bad_regex(self):
self.assertRaises(SystemExit, self.module.run_command, 'foo', prompt_regex='[pP)assword:')
self.assertTrue(self.module.fail_json.called)
def test_prompt_no_match(self):
self.cmd_out[sentinel.stdout] = BytesIO(b'hello')
(rc, _, _) = self.module.run_command('foo', prompt_regex='[pP]assword:')
self.assertEqual(rc, 0)
def test_prompt_match_wo_data(self):
self.cmd_out[sentinel.stdout] = BytesIO(b'Authentication required!\nEnter password: ')
(rc, _, _) = self.module.run_command('foo', prompt_regex=r'[pP]assword:', data=None)
self.assertEqual(rc, 257)
def test_check_rc_false(self):
self.cmd.returncode = 1
(rc, _, _) = self.module.run_command('/bin/false', check_rc=False)
self.assertEqual(rc, 1)
def test_check_rc_true(self):
self.cmd.returncode = 1
self.assertRaises(SystemExit, self.module.run_command, '/bin/false', check_rc=True)
self.assertTrue(self.module.fail_json.called)
args, kwargs = self.module.fail_json.call_args
self.assertEqual(kwargs['rc'], 1)
def test_text_stdin(self):
(rc, stdout, stderr) = self.module.run_command('/bin/foo', data='hello world')
self.assertEqual(self.cmd.stdin.getvalue(), b'hello world\n')
def test_ascii_stdout(self):
self.cmd_out[sentinel.stdout] = BytesIO(b'hello')
(rc, stdout, stderr) = self.module.run_command('/bin/cat hello.txt')
self.assertEqual(rc, 0)
self.assertEqual(stdout, b'hello')
def test_utf8_output(self):
self.cmd_out[sentinel.stdout] = BytesIO(u'Žarn§'.encode('utf-8'))
self.cmd_out[sentinel.stderr] = BytesIO(u'لرئيسية'.encode('utf-8'))
(rc, stdout, stderr) = self.module.run_command('/bin/something_ugly')
self.assertEqual(rc, 0)
self.assertEqual(stdout.decode('utf-8'), u'Žarn§')
self.assertEqual(stderr.decode('utf-8'), u'لرئيسية')