ansible/test/units/modules/test_hostname.py
Rick Elrod 8a0abed1ba [hostname] don't write in get_*() methods
Change:
- Hostname strategies' get_*() methods should never write to the
  filesystem. They are used in check_mode by default to determine if
  there is any work to be done.

Test Plan:
- New unit tests to ensure that (at least when in check_mode) the get
  methods don't ever call write.

Tickets:
- Fixes #66432

Signed-off-by: Rick Elrod <rick@elrod.me>
2021-05-27 13:15:52 +02:00

35 lines
1.3 KiB
Python

from __future__ import (absolute_import, division, print_function)
__metaclass__ = type
from units.compat.mock import patch, MagicMock, mock_open
from ansible.module_utils import basic
from ansible.module_utils.common._utils import get_all_subclasses
from ansible.modules import hostname
from units.modules.utils import ModuleTestCase, set_module_args
from ansible.module_utils.six import PY2
class TestHostname(ModuleTestCase):
@patch('os.path.isfile')
def test_stategy_get_never_writes_in_check_mode(self, isfile):
isfile.return_value = True
set_module_args({'name': 'fooname', '_ansible_check_mode': True})
subclasses = get_all_subclasses(hostname.GenericStrategy)
module = MagicMock()
for cls in subclasses:
instance = cls(module)
instance.module.run_command = MagicMock()
instance.module.run_command.return_value = (0, '', '')
m = mock_open()
builtins = 'builtins'
if PY2:
builtins = '__builtin__'
with patch('%s.open' % builtins, m):
instance.get_permanent_hostname()
instance.get_current_hostname()
self.assertFalse(
m.return_value.write.called,
msg='%s called write, should not have' % str(cls))