salt/tests/unit/utils/test_systemd.py
2017-04-28 13:36:42 +01:00

283 lines
12 KiB
Python

# -*- coding: utf-8 -*-
# Import python libs
from __future__ import absolute_import
import errno
import os
# Import Salt Testing libs
from tests.support.unit import TestCase, skipIf
from tests.support.mock import Mock, patch, NO_MOCK, NO_MOCK_REASON
# Import Salt libs
from salt.exceptions import SaltInvocationError
from salt.utils import systemd as _systemd
def _booted_effect(path):
return True if path == '/run/systemd/system' else os.stat(path)
def _not_booted_effect(path):
if path == '/run/systemd/system':
raise OSError(errno.ENOENT, 'No such file or directory', path)
return os.stat(path)
@skipIf(NO_MOCK, NO_MOCK_REASON)
class SystemdTestCase(TestCase):
'''
Tests the functions in salt.utils.systemd
'''
def test_booted(self):
'''
Test that salt.utils.systemd.booted() returns True when minion is
systemd-booted.
'''
# Ensure that os.stat returns True. os.stat doesn't return a bool
# normally, but the code is doing a simple truth check on the return
# data, so it is sufficient enough to mock it as True for these tests.
with patch('os.stat', side_effect=_booted_effect):
# Test without context dict passed
self.assertTrue(_systemd.booted())
# Test that context key is set when context dict is passed
context = {}
self.assertTrue(_systemd.booted(context))
self.assertEqual(context, {'salt.utils.systemd.booted': True})
def test_not_booted(self):
'''
Test that salt.utils.systemd.booted() returns False when minion is not
systemd-booted.
'''
# Ensure that os.stat raises an exception even if test is being run on
# a systemd-booted host.
with patch('os.stat', side_effect=_not_booted_effect):
# Test without context dict passed
self.assertFalse(_systemd.booted())
# Test that context key is set when context dict is passed
context = {}
self.assertFalse(_systemd.booted(context))
self.assertEqual(context, {'salt.utils.systemd.booted': False})
def test_booted_return_from_context(self):
'''
Test that the context data is returned when present. To ensure we're
getting data from the context dict, we use a non-boolean value to
differentiate it from the True/False return this function normally
produces.
'''
context = {'salt.utils.systemd.booted': 'foo'}
self.assertEqual(_systemd.booted(context), 'foo')
def test_booted_invalid_context(self):
'''
Test with invalid context data. The context value must be a dict, so
this should raise a SaltInvocationError.
'''
# Test with invalid context data
with self.assertRaises(SaltInvocationError):
_systemd.booted(99999)
def test_version(self):
'''
Test that salt.utils.systemd.booted() returns True when minion is
systemd-booted.
'''
with patch('subprocess.Popen') as popen_mock:
_version = 231
output = 'systemd {0}\n-SYSVINIT'.format(_version)
popen_mock.return_value = Mock(
communicate=lambda *args, **kwargs: (output, None),
pid=lambda: 12345,
retcode=0
)
# Test without context dict passed
self.assertEqual(_systemd.version(), _version)
# Test that context key is set when context dict is passed
context = {}
self.assertTrue(_systemd.version(context))
self.assertEqual(context, {'salt.utils.systemd.version': _version})
def test_version_return_from_context(self):
'''
Test that the context data is returned when present. To ensure we're
getting data from the context dict, we use a non-integer value to
differentiate it from the integer return this function normally
produces.
'''
context = {'salt.utils.systemd.version': 'foo'}
self.assertEqual(_systemd.version(context), 'foo')
def test_version_invalid_context(self):
'''
Test with invalid context data. The context value must be a dict, so
this should raise a SaltInvocationError.
'''
# Test with invalid context data
with self.assertRaises(SaltInvocationError):
_systemd.version(99999)
def test_version_parse_problem(self):
'''
Test with invalid context data. The context value must be a dict, so
this should raise a SaltInvocationError.
'''
with patch('subprocess.Popen') as popen_mock:
popen_mock.return_value = Mock(
communicate=lambda *args, **kwargs: ('invalid', None),
pid=lambda: 12345,
retcode=0
)
# Test without context dict passed
self.assertIsNone(_systemd.version())
# Test that context key is set when context dict is passed. A failure
# to parse the systemctl output should not set a context key, so it
# should not be present in the context dict.
context = {}
self.assertIsNone(_systemd.version(context))
self.assertEqual(context, {})
def test_has_scope_systemd204(self):
'''
Scopes are available in systemd>=205. Make sure that this function
returns the expected boolean. We do three separate unit tests for
versions 204 through 206 because mock doesn't like us altering the
return_value in a loop.
'''
with patch('subprocess.Popen') as popen_mock:
_expected = False
_version = 204
_output = 'systemd {0}\n-SYSVINIT'.format(_version)
popen_mock.return_value = Mock(
communicate=lambda *args, **kwargs: (_output, None),
pid=lambda: 12345,
retcode=0
)
# Ensure that os.stat returns True. os.stat doesn't return a bool
# normally, but the code is doing a simple truth check on the
# return data, so it is sufficient enough to mock it as True for
# these tests.
with patch('os.stat', side_effect=_booted_effect):
# Test without context dict passed
self.assertEqual(_systemd.has_scope(), _expected)
# Test that context key is set when context dict is passed
context = {}
self.assertEqual(_systemd.has_scope(context), _expected)
self.assertEqual(
context,
{'salt.utils.systemd.booted': True,
'salt.utils.systemd.version': _version},
)
def test_has_scope_systemd205(self):
'''
Scopes are available in systemd>=205. Make sure that this function
returns the expected boolean. We do three separate unit tests for
versions 204 through 206 because mock doesn't like us altering the
return_value in a loop.
'''
with patch('subprocess.Popen') as popen_mock:
_expected = True
_version = 205
_output = 'systemd {0}\n-SYSVINIT'.format(_version)
popen_mock.return_value = Mock(
communicate=lambda *args, **kwargs: (_output, None),
pid=lambda: 12345,
retcode=0
)
# Ensure that os.stat returns True. os.stat doesn't return a bool
# normally, but the code is doing a simple truth check on the
# return data, so it is sufficient enough to mock it as True for
# these tests.
with patch('os.stat', side_effect=_booted_effect):
# Test without context dict passed
self.assertEqual(_systemd.has_scope(), _expected)
# Test that context key is set when context dict is passed
context = {}
self.assertEqual(_systemd.has_scope(context), _expected)
self.assertEqual(
context,
{'salt.utils.systemd.booted': True,
'salt.utils.systemd.version': _version},
)
def test_has_scope_systemd206(self):
'''
Scopes are available in systemd>=205. Make sure that this function
returns the expected boolean. We do three separate unit tests for
versions 204 through 206 because mock doesn't like us altering the
return_value in a loop.
'''
with patch('subprocess.Popen') as popen_mock:
_expected = True
_version = 206
_output = 'systemd {0}\n-SYSVINIT'.format(_version)
popen_mock.return_value = Mock(
communicate=lambda *args, **kwargs: (_output, None),
pid=lambda: 12345,
retcode=0
)
# Ensure that os.stat returns True. os.stat doesn't return a bool
# normally, but the code is doing a simple truth check on the
# return data, so it is sufficient enough to mock it as True for
# these tests.
with patch('os.stat', side_effect=_booted_effect):
# Test without context dict passed
self.assertEqual(_systemd.has_scope(), _expected)
# Test that context key is set when context dict is passed
context = {}
self.assertEqual(_systemd.has_scope(context), _expected)
self.assertEqual(
context,
{'salt.utils.systemd.booted': True,
'salt.utils.systemd.version': _version},
)
def test_has_scope_no_systemd(self):
'''
Test the case where the system is not systemd-booted. We should not be
performing a version check in these cases as there is no need.
'''
with patch('os.stat', side_effect=_not_booted_effect):
# Test without context dict passed
self.assertFalse(_systemd.has_scope())
# Test that context key is set when context dict is passed.
# Because we are not systemd-booted, there should be no key in the
# context dict for the version check, as we shouldn't have
# performed this check.
context = {}
self.assertFalse(_systemd.has_scope(context))
self.assertEqual(context, {'salt.utils.systemd.booted': False})
def test_has_scope_version_parse_problem(self):
'''
Test the case where the system is systemd-booted, but we failed to
parse the "systemctl --version" output.
'''
with patch('subprocess.Popen') as popen_mock:
popen_mock.return_value = Mock(
communicate=lambda *args, **kwargs: ('invalid', None),
pid=lambda: 12345,
retcode=0
)
with patch('os.stat', side_effect=_booted_effect):
# Test without context dict passed
self.assertFalse(_systemd.has_scope())
# Test that context key is set when context dict is passed. A
# failure to parse the systemctl output should not set a context
# key, so it should not be present in the context dict.
context = {}
self.assertFalse(_systemd.has_scope(context))
self.assertEqual(context, {'salt.utils.systemd.booted': True})
def test_has_scope_invalid_context(self):
'''
Test with invalid context data. The context value must be a dict, so
this should raise a SaltInvocationError.
'''
# Test with invalid context data
with self.assertRaises(SaltInvocationError):
_systemd.has_scope(99999)