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# This file is part of cloud-init. See LICENSE file for license information.
import random
from cloudinit.config import cc_disk_setup
from cloudinit.tests.helpers import CiTestCase, ExitStack, mock, TestCase
class TestIsDiskUsed(TestCase):
def setUp(self):
super(TestIsDiskUsed, self).setUp()
self.patches = ExitStack()
mod_name = 'cloudinit.config.cc_disk_setup'
self.enumerate_disk = self.patches.enter_context(
mock.patch('{0}.enumerate_disk'.format(mod_name)))
self.check_fs = self.patches.enter_context(
mock.patch('{0}.check_fs'.format(mod_name)))
def tearDown(self):
super(TestIsDiskUsed, self).tearDown()
self.patches.close()
def test_multiple_child_nodes_returns_true(self):
self.enumerate_disk.return_value = (mock.MagicMock() for _ in range(2))
self.check_fs.return_value = (mock.MagicMock(), None, mock.MagicMock())
self.assertTrue(cc_disk_setup.is_disk_used(mock.MagicMock()))
def test_valid_filesystem_returns_true(self):
self.enumerate_disk.return_value = (mock.MagicMock() for _ in range(1))
self.check_fs.return_value = (
mock.MagicMock(), 'ext4', mock.MagicMock())
self.assertTrue(cc_disk_setup.is_disk_used(mock.MagicMock()))
def test_one_child_nodes_and_no_fs_returns_false(self):
self.enumerate_disk.return_value = (mock.MagicMock() for _ in range(1))
self.check_fs.return_value = (mock.MagicMock(), None, mock.MagicMock())
self.assertFalse(cc_disk_setup.is_disk_used(mock.MagicMock()))
class TestGetMbrHddSize(TestCase):
def setUp(self):
super(TestGetMbrHddSize, self).setUp()
self.patches = ExitStack()
self.subp = self.patches.enter_context(
mock.patch.object(cc_disk_setup.subp, 'subp'))
def tearDown(self):
super(TestGetMbrHddSize, self).tearDown()
self.patches.close()
def _configure_subp_mock(self, hdd_size_in_bytes, sector_size_in_bytes):
def _subp(cmd, *args, **kwargs):
self.assertEqual(3, len(cmd))
if '--getsize64' in cmd:
return hdd_size_in_bytes, None
elif '--getss' in cmd:
return sector_size_in_bytes, None
raise Exception('Unexpected blockdev command called')
self.subp.side_effect = _subp
def _test_for_sector_size(self, sector_size):
size_in_bytes = random.randint(10000, 10000000) * 512
size_in_sectors = size_in_bytes / sector_size
self._configure_subp_mock(size_in_bytes, sector_size)
self.assertEqual(size_in_sectors,
cc_disk_setup.get_hdd_size('/dev/sda1'))
def test_size_for_512_byte_sectors(self):
self._test_for_sector_size(512)
def test_size_for_1024_byte_sectors(self):
self._test_for_sector_size(1024)
def test_size_for_2048_byte_sectors(self):
self._test_for_sector_size(2048)
def test_size_for_4096_byte_sectors(self):
self._test_for_sector_size(4096)
class TestGetPartitionMbrLayout(TestCase):
def test_single_partition_using_boolean(self):
self.assertEqual('0,',
cc_disk_setup.get_partition_mbr_layout(1000, True))
def test_single_partition_using_list(self):
disk_size = random.randint(1000000, 1000000000000)
self.assertEqual(
',,83',
cc_disk_setup.get_partition_mbr_layout(disk_size, [100]))
def test_half_and_half(self):
disk_size = random.randint(1000000, 1000000000000)
expected_partition_size = int(float(disk_size) / 2)
self.assertEqual(
',{0},83\n,,83'.format(expected_partition_size),
cc_disk_setup.get_partition_mbr_layout(disk_size, [50, 50]))
def test_thirds_with_different_partition_type(self):
disk_size = random.randint(1000000, 1000000000000)
expected_partition_size = int(float(disk_size) * 0.33)
self.assertEqual(
',{0},83\n,,82'.format(expected_partition_size),
cc_disk_setup.get_partition_mbr_layout(disk_size, [33, [66, 82]]))
class TestUpdateFsSetupDevices(TestCase):
def test_regression_1634678(self):
# Cf. https://bugs.launchpad.net/cloud-init/+bug/1634678
fs_setup = {
'partition': 'auto',
'device': '/dev/xvdb1',
'overwrite': False,
'label': 'test',
'filesystem': 'ext4'
}
cc_disk_setup.update_fs_setup_devices([fs_setup],
lambda device: device)
self.assertEqual({
'_origname': '/dev/xvdb1',
'partition': 'auto',
'device': '/dev/xvdb1',
'overwrite': False,
'label': 'test',
'filesystem': 'ext4'
}, fs_setup)
def test_dotted_devname(self):
fs_setup = {
'partition': 'auto',
'device': 'ephemeral0.0',
'label': 'test2',
'filesystem': 'xfs'
}
cc_disk_setup.update_fs_setup_devices([fs_setup],
lambda device: device)
self.assertEqual({
'_origname': 'ephemeral0.0',
'_partition': 'auto',
'partition': '0',
'device': 'ephemeral0',
'label': 'test2',
'filesystem': 'xfs'
}, fs_setup)
def test_dotted_devname_populates_partition(self):
fs_setup = {
'device': 'ephemeral0.1',
'label': 'test2',
'filesystem': 'xfs'
}
cc_disk_setup.update_fs_setup_devices([fs_setup],
lambda device: device)
self.assertEqual({
'_origname': 'ephemeral0.1',
'device': 'ephemeral0',
'partition': '1',
'label': 'test2',
'filesystem': 'xfs'
}, fs_setup)
@mock.patch('cloudinit.config.cc_disk_setup.assert_and_settle_device',
return_value=None)
@mock.patch('cloudinit.config.cc_disk_setup.find_device_node',
return_value=('/dev/xdb1', False))
@mock.patch('cloudinit.config.cc_disk_setup.device_type', return_value=None)
@mock.patch('cloudinit.config.cc_disk_setup.subp.subp', return_value=('', ''))
class TestMkfsCommandHandling(CiTestCase):
with_logs = True
def test_with_cmd(self, subp, *args):
"""mkfs honors cmd and logs warnings when extra_opts or overwrite are
provided."""
cc_disk_setup.mkfs({
'cmd': 'mkfs -t %(filesystem)s -L %(label)s %(device)s',
'filesystem': 'ext4',
'device': '/dev/xdb1',
'label': 'with_cmd',
'extra_opts': ['should', 'generate', 'warning'],
'overwrite': 'should generate warning too'
})
self.assertIn(
'extra_opts ' +
'ignored because cmd was specified: mkfs -t ext4 -L with_cmd ' +
'/dev/xdb1',
self.logs.getvalue())
self.assertIn(
'overwrite ' +
'ignored because cmd was specified: mkfs -t ext4 -L with_cmd ' +
'/dev/xdb1',
self.logs.getvalue())
subp.assert_called_once_with(
'mkfs -t ext4 -L with_cmd /dev/xdb1', shell=True)
@mock.patch('cloudinit.config.cc_disk_setup.subp.which')
def test_overwrite_and_extra_opts_without_cmd(self, m_which, subp, *args):
"""mkfs observes extra_opts and overwrite settings when cmd is not
present."""
m_which.side_effect = lambda p: {'mkfs.ext4': '/sbin/mkfs.ext4'}[p]
cc_disk_setup.mkfs({
'filesystem': 'ext4',
'device': '/dev/xdb1',
'label': 'without_cmd',
'extra_opts': ['are', 'added'],
'overwrite': True
})
subp.assert_called_once_with(
['/sbin/mkfs.ext4', '/dev/xdb1',
'-L', 'without_cmd', '-F', 'are', 'added'],
shell=False)
@mock.patch('cloudinit.config.cc_disk_setup.subp.which')
def test_mkswap(self, m_which, subp, *args):
"""mkfs observes extra_opts and overwrite settings when cmd is not
present."""
m_which.side_effect = iter([None, '/sbin/mkswap'])
cc_disk_setup.mkfs({
'filesystem': 'swap',
'device': '/dev/xdb1',
'label': 'swap',
'overwrite': True,
})
self.assertEqual([mock.call('mkfs.swap'), mock.call('mkswap')],
m_which.call_args_list)
subp.assert_called_once_with(
['/sbin/mkswap', '/dev/xdb1', '-L', 'swap', '-f'], shell=False)
#
# vi: ts=4 expandtab
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