Files
deb-python-ironic-lib/ironic_lib/tests/test_utils.py
Lucas Alvares Gomes 7aac631fbc Add parse_root_device_hints to utils.py
This patch is adding a function called parse_root_device_hints to the
utils.py module. This function is responsible for parsing the root
device hints dictionary from the node's properties attribute.

Both Ironic and Ironic Python Agent project have similar functions so
adding it to ironic-lib would make it easier to share code between both
projects and fix bugs in only one place.

Change-Id: Ida6d20d1fdb40e50fe33ffec1c953286d4cbc2b7
Partial-Bug: #1605631
2016-07-26 09:52:26 +01:00

331 lines
13 KiB
Python

# Copyright 2011 Justin Santa Barbara
# Copyright 2012 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import errno
import os
import os.path
import tempfile
import mock
from oslo_concurrency import processutils
from oslo_config import cfg
from oslotest import base as test_base
from ironic_lib import exception
from ironic_lib import utils
CONF = cfg.CONF
class BareMetalUtilsTestCase(test_base.BaseTestCase):
def test_unlink(self):
with mock.patch.object(os, "unlink", autospec=True) as unlink_mock:
unlink_mock.return_value = None
utils.unlink_without_raise("/fake/path")
unlink_mock.assert_called_once_with("/fake/path")
def test_unlink_ENOENT(self):
with mock.patch.object(os, "unlink", autospec=True) as unlink_mock:
unlink_mock.side_effect = OSError(errno.ENOENT)
utils.unlink_without_raise("/fake/path")
unlink_mock.assert_called_once_with("/fake/path")
class ExecuteTestCase(test_base.BaseTestCase):
def test_retry_on_failure(self):
fd, tmpfilename = tempfile.mkstemp()
_, tmpfilename2 = tempfile.mkstemp()
try:
fp = os.fdopen(fd, 'w+')
fp.write('''#!/bin/sh
# If stdin fails to get passed during one of the runs, make a note.
if ! grep -q foo
then
echo 'failure' > "$1"
fi
# If stdin has failed to get passed during this or a previous run, exit early.
if grep failure "$1"
then
exit 1
fi
runs="$(cat $1)"
if [ -z "$runs" ]
then
runs=0
fi
runs=$(($runs + 1))
echo $runs > "$1"
exit 1
''')
fp.close()
os.chmod(tmpfilename, 0o755)
try:
self.assertRaises(processutils.ProcessExecutionError,
utils.execute,
tmpfilename, tmpfilename2, attempts=10,
process_input=b'foo',
delay_on_retry=False)
except OSError as e:
if e.errno == errno.EACCES:
self.skipTest("Permissions error detected. "
"Are you running with a noexec /tmp?")
else:
raise
fp = open(tmpfilename2, 'r')
runs = fp.read()
fp.close()
self.assertNotEqual(runs.strip(), 'failure', 'stdin did not '
'always get passed '
'correctly')
runs = int(runs.strip())
self.assertEqual(10, runs,
'Ran %d times instead of 10.' % (runs,))
finally:
os.unlink(tmpfilename)
os.unlink(tmpfilename2)
def test_unknown_kwargs_raises_error(self):
self.assertRaises(processutils.UnknownArgumentError,
utils.execute,
'/usr/bin/env', 'true',
this_is_not_a_valid_kwarg=True)
def test_check_exit_code_boolean(self):
utils.execute('/usr/bin/env', 'false', check_exit_code=False)
self.assertRaises(processutils.ProcessExecutionError,
utils.execute,
'/usr/bin/env', 'false', check_exit_code=True)
def test_no_retry_on_success(self):
fd, tmpfilename = tempfile.mkstemp()
_, tmpfilename2 = tempfile.mkstemp()
try:
fp = os.fdopen(fd, 'w+')
fp.write('''#!/bin/sh
# If we've already run, bail out.
grep -q foo "$1" && exit 1
# Mark that we've run before.
echo foo > "$1"
# Check that stdin gets passed correctly.
grep foo
''')
fp.close()
os.chmod(tmpfilename, 0o755)
try:
utils.execute(tmpfilename,
tmpfilename2,
process_input=b'foo',
attempts=2)
except OSError as e:
if e.errno == errno.EACCES:
self.skipTest("Permissions error detected. "
"Are you running with a noexec /tmp?")
else:
raise
finally:
os.unlink(tmpfilename)
os.unlink(tmpfilename2)
@mock.patch.object(processutils, 'execute', autospec=True)
@mock.patch.object(os.environ, 'copy', return_value={}, autospec=True)
def test_execute_use_standard_locale_no_env_variables(self, env_mock,
execute_mock):
utils.execute('foo', use_standard_locale=True)
execute_mock.assert_called_once_with('foo',
env_variables={'LC_ALL': 'C'})
@mock.patch.object(processutils, 'execute', autospec=True)
def test_execute_use_standard_locale_with_env_variables(self,
execute_mock):
utils.execute('foo', use_standard_locale=True,
env_variables={'foo': 'bar'})
execute_mock.assert_called_once_with('foo',
env_variables={'LC_ALL': 'C',
'foo': 'bar'})
@mock.patch.object(processutils, 'execute', autospec=True)
def test_execute_not_use_standard_locale(self, execute_mock):
utils.execute('foo', use_standard_locale=False,
env_variables={'foo': 'bar'})
execute_mock.assert_called_once_with('foo',
env_variables={'foo': 'bar'})
def test_execute_without_root_helper(self):
CONF.set_override('root_helper', None, group='ironic_lib')
with mock.patch.object(
processutils, 'execute', autospec=True) as execute_mock:
utils.execute('foo', run_as_root=False)
execute_mock.assert_called_once_with('foo', run_as_root=False)
def test_execute_without_root_helper_run_as_root(self):
CONF.set_override('root_helper', None, group='ironic_lib')
with mock.patch.object(
processutils, 'execute', autospec=True) as execute_mock:
utils.execute('foo', run_as_root=True)
execute_mock.assert_called_once_with('foo', run_as_root=False)
def test_execute_with_root_helper(self):
with mock.patch.object(
processutils, 'execute', autospec=True) as execute_mock:
utils.execute('foo', run_as_root=False)
execute_mock.assert_called_once_with('foo', run_as_root=False)
def test_execute_with_root_helper_run_as_root(self):
with mock.patch.object(
processutils, 'execute', autospec=True) as execute_mock:
utils.execute('foo', run_as_root=True)
execute_mock.assert_called_once_with(
'foo', run_as_root=True,
root_helper=CONF.ironic_lib.root_helper)
@mock.patch.object(utils, 'LOG', autospec=True)
def _test_execute_with_log_stdout(self, log_mock, log_stdout=None):
with mock.patch.object(processutils, 'execute') as execute_mock:
execute_mock.return_value = ('stdout', 'stderr')
if log_stdout is not None:
utils.execute('foo', log_stdout=log_stdout)
else:
utils.execute('foo')
execute_mock.assert_called_once_with('foo')
name, args, kwargs = log_mock.debug.mock_calls[1]
if log_stdout is False:
self.assertEqual(2, log_mock.debug.call_count)
self.assertNotIn('stdout', args[0])
else:
self.assertEqual(3, log_mock.debug.call_count)
self.assertIn('stdout', args[0])
def test_execute_with_log_stdout_default(self):
self._test_execute_with_log_stdout()
def test_execute_with_log_stdout_true(self):
self._test_execute_with_log_stdout(log_stdout=True)
def test_execute_with_log_stdout_false(self):
self._test_execute_with_log_stdout(log_stdout=False)
class MkfsTestCase(test_base.BaseTestCase):
@mock.patch.object(utils, 'execute', autospec=True)
def test_mkfs(self, execute_mock):
utils.mkfs('ext4', '/my/block/dev')
utils.mkfs('msdos', '/my/msdos/block/dev')
utils.mkfs('swap', '/my/swap/block/dev')
expected = [mock.call('mkfs', '-t', 'ext4', '-F', '/my/block/dev',
run_as_root=True,
use_standard_locale=True),
mock.call('mkfs', '-t', 'msdos', '/my/msdos/block/dev',
run_as_root=True,
use_standard_locale=True),
mock.call('mkswap', '/my/swap/block/dev',
run_as_root=True,
use_standard_locale=True)]
self.assertEqual(expected, execute_mock.call_args_list)
@mock.patch.object(utils, 'execute', autospec=True)
def test_mkfs_with_label(self, execute_mock):
utils.mkfs('ext4', '/my/block/dev', 'ext4-vol')
utils.mkfs('msdos', '/my/msdos/block/dev', 'msdos-vol')
utils.mkfs('swap', '/my/swap/block/dev', 'swap-vol')
expected = [mock.call('mkfs', '-t', 'ext4', '-F', '-L', 'ext4-vol',
'/my/block/dev', run_as_root=True,
use_standard_locale=True),
mock.call('mkfs', '-t', 'msdos', '-n', 'msdos-vol',
'/my/msdos/block/dev', run_as_root=True,
use_standard_locale=True),
mock.call('mkswap', '-L', 'swap-vol',
'/my/swap/block/dev', run_as_root=True,
use_standard_locale=True)]
self.assertEqual(expected, execute_mock.call_args_list)
@mock.patch.object(utils, 'execute', autospec=True,
side_effect=processutils.ProcessExecutionError(
stderr=os.strerror(errno.ENOENT)))
def test_mkfs_with_unsupported_fs(self, execute_mock):
self.assertRaises(exception.FileSystemNotSupported,
utils.mkfs, 'foo', '/my/block/dev')
@mock.patch.object(utils, 'execute', autospec=True,
side_effect=processutils.ProcessExecutionError(
stderr='fake'))
def test_mkfs_with_unexpected_error(self, execute_mock):
self.assertRaises(processutils.ProcessExecutionError, utils.mkfs,
'ext4', '/my/block/dev', 'ext4-vol')
class IsHttpUrlTestCase(test_base.BaseTestCase):
def test_is_http_url(self):
self.assertTrue(utils.is_http_url('http://127.0.0.1'))
self.assertTrue(utils.is_http_url('https://127.0.0.1'))
self.assertTrue(utils.is_http_url('HTTP://127.1.2.3'))
self.assertTrue(utils.is_http_url('HTTPS://127.3.2.1'))
self.assertFalse(utils.is_http_url('Zm9vYmFy'))
self.assertFalse(utils.is_http_url('11111111'))
class ParseRootDeviceTestCase(test_base.BaseTestCase):
def setUp(self):
super(ParseRootDeviceTestCase, self).setUp()
self.root_device = {
'wwn': '123456', 'model': 'foo-model', 'size': 12345,
'serial': 'foo-serial', 'vendor': 'foo-vendor', 'name': '/dev/sda',
'wwn_with_extension': '123456111', 'wwn_vendor_extension': '111',
'rotational': True}
def test_parse_root_device_hints(self):
result = utils.parse_root_device_hints(self.root_device)
self.assertEqual(self.root_device, result)
def test_parse_root_device_hints_no_hints(self):
result = utils.parse_root_device_hints({})
self.assertIsNone(result)
def test_parse_root_device_hints_convert_size(self):
result = utils.parse_root_device_hints({'size': '12345'})
self.assertEqual({'size': 12345}, result)
def test_parse_root_device_hints_invalid_size(self):
for value in ('not-int', -123, 0):
self.assertRaises(ValueError, utils.parse_root_device_hints,
{'size': value})
def _parse_root_device_hints_convert_rotational(self, values,
expected_value):
for value in values:
result = utils.parse_root_device_hints({'rotational': value})
self.assertEqual({'rotational': expected_value}, result)
def test_parse_root_device_hints_convert_rotational(self):
self._parse_root_device_hints_convert_rotational(
(True, 'true', 'on', 'y', 'yes'), True)
self._parse_root_device_hints_convert_rotational(
(False, 'false', 'off', 'n', 'no'), False)
def test_parse_root_device_hints_invalid_rotational(self):
self.assertRaises(ValueError, utils.parse_root_device_hints,
{'rotational': 'not-bool'})
def test_parse_root_device_hints_non_existent_hint(self):
self.assertRaises(ValueError, utils.parse_root_device_hints,
{'non-existent': 'foo'})