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# This file is part of cloud-init. See LICENSE file for license information.
"""Tests for cloudinit.util"""
import logging
from textwrap import dedent
import cloudinit.util as util
from cloudinit.tests.helpers import CiTestCase, mock
LOG = logging.getLogger(__name__)
MOUNT_INFO = [
'68 0 8:3 / / ro,relatime shared:1 - btrfs /dev/sda1 ro,attr2,inode64',
'153 68 254:0 / /home rw,relatime shared:101 - xfs /dev/sda2 rw,attr2'
]
class FakeCloud(object):
def __init__(self, hostname, fqdn):
self.hostname = hostname
self.fqdn = fqdn
self.calls = []
def get_hostname(self, fqdn=None, metadata_only=None):
myargs = {}
if fqdn is not None:
myargs['fqdn'] = fqdn
if metadata_only is not None:
myargs['metadata_only'] = metadata_only
self.calls.append(myargs)
if fqdn:
return self.fqdn
return self.hostname
class TestUtil(CiTestCase):
def test_parse_mount_info_no_opts_no_arg(self):
result = util.parse_mount_info('/home', MOUNT_INFO, LOG)
self.assertEqual(('/dev/sda2', 'xfs', '/home'), result)
def test_parse_mount_info_no_opts_arg(self):
result = util.parse_mount_info('/home', MOUNT_INFO, LOG, False)
self.assertEqual(('/dev/sda2', 'xfs', '/home'), result)
def test_parse_mount_info_with_opts(self):
result = util.parse_mount_info('/', MOUNT_INFO, LOG, True)
self.assertEqual(
('/dev/sda1', 'btrfs', '/', 'ro,relatime'),
result
)
@mock.patch('cloudinit.util.get_mount_info')
def test_mount_is_rw(self, m_mount_info):
m_mount_info.return_value = ('/dev/sda1', 'btrfs', '/', 'rw,relatime')
is_rw = util.mount_is_read_write('/')
self.assertEqual(is_rw, True)
@mock.patch('cloudinit.util.get_mount_info')
def test_mount_is_ro(self, m_mount_info):
m_mount_info.return_value = ('/dev/sda1', 'btrfs', '/', 'ro,relatime')
is_rw = util.mount_is_read_write('/')
self.assertEqual(is_rw, False)
class TestShellify(CiTestCase):
def test_input_dict_raises_type_error(self):
self.assertRaisesRegex(
TypeError, 'Input.*was.*dict.*xpected',
util.shellify, {'mykey': 'myval'})
def test_input_str_raises_type_error(self):
self.assertRaisesRegex(
TypeError, 'Input.*was.*str.*xpected', util.shellify, "foobar")
def test_value_with_int_raises_type_error(self):
self.assertRaisesRegex(
TypeError, 'shellify.*int', util.shellify, ["foo", 1])
def test_supports_strings_and_lists(self):
self.assertEqual(
'\n'.join(["#!/bin/sh", "echo hi mom", "'echo' 'hi dad'",
"'echo' 'hi' 'sis'", ""]),
util.shellify(["echo hi mom", ["echo", "hi dad"],
('echo', 'hi', 'sis')]))
class TestGetHostnameFqdn(CiTestCase):
def test_get_hostname_fqdn_from_only_cfg_fqdn(self):
"""When cfg only has the fqdn key, derive hostname and fqdn from it."""
hostname, fqdn = util.get_hostname_fqdn(
cfg={'fqdn': 'myhost.domain.com'}, cloud=None)
self.assertEqual('myhost', hostname)
self.assertEqual('myhost.domain.com', fqdn)
def test_get_hostname_fqdn_from_cfg_fqdn_and_hostname(self):
"""When cfg has both fqdn and hostname keys, return them."""
hostname, fqdn = util.get_hostname_fqdn(
cfg={'fqdn': 'myhost.domain.com', 'hostname': 'other'}, cloud=None)
self.assertEqual('other', hostname)
self.assertEqual('myhost.domain.com', fqdn)
def test_get_hostname_fqdn_from_cfg_hostname_with_domain(self):
"""When cfg has only hostname key which represents a fqdn, use that."""
hostname, fqdn = util.get_hostname_fqdn(
cfg={'hostname': 'myhost.domain.com'}, cloud=None)
self.assertEqual('myhost', hostname)
self.assertEqual('myhost.domain.com', fqdn)
def test_get_hostname_fqdn_from_cfg_hostname_without_domain(self):
"""When cfg has a hostname without a '.' query cloud.get_hostname."""
mycloud = FakeCloud('cloudhost', 'cloudhost.mycloud.com')
hostname, fqdn = util.get_hostname_fqdn(
cfg={'hostname': 'myhost'}, cloud=mycloud)
self.assertEqual('myhost', hostname)
self.assertEqual('cloudhost.mycloud.com', fqdn)
self.assertEqual(
[{'fqdn': True, 'metadata_only': False}], mycloud.calls)
def test_get_hostname_fqdn_from_without_fqdn_or_hostname(self):
"""When cfg has neither hostname nor fqdn cloud.get_hostname."""
mycloud = FakeCloud('cloudhost', 'cloudhost.mycloud.com')
hostname, fqdn = util.get_hostname_fqdn(cfg={}, cloud=mycloud)
self.assertEqual('cloudhost', hostname)
self.assertEqual('cloudhost.mycloud.com', fqdn)
self.assertEqual(
[{'fqdn': True, 'metadata_only': False},
{'metadata_only': False}], mycloud.calls)
def test_get_hostname_fqdn_from_passes_metadata_only_to_cloud(self):
"""Calls to cloud.get_hostname pass the metadata_only parameter."""
mycloud = FakeCloud('cloudhost', 'cloudhost.mycloud.com')
_hn, _fqdn = util.get_hostname_fqdn(
cfg={}, cloud=mycloud, metadata_only=True)
self.assertEqual(
[{'fqdn': True, 'metadata_only': True},
{'metadata_only': True}], mycloud.calls)
class TestBlkid(CiTestCase):
ids = {
"id01": "1111-1111",
"id02": "22222222-2222",
"id03": "33333333-3333",
"id04": "44444444-4444",
"id05": "55555555-5555-5555-5555-555555555555",
"id06": "66666666-6666-6666-6666-666666666666",
"id07": "52894610484658920398",
"id08": "86753098675309867530",
"id09": "99999999-9999-9999-9999-999999999999",
}
blkid_out = dedent("""\
/dev/loop0: TYPE="squashfs"
/dev/loop1: TYPE="squashfs"
/dev/loop2: TYPE="squashfs"
/dev/loop3: TYPE="squashfs"
/dev/sda1: UUID="{id01}" TYPE="vfat" PARTUUID="{id02}"
/dev/sda2: UUID="{id03}" TYPE="ext4" PARTUUID="{id04}"
/dev/sda3: UUID="{id05}" TYPE="ext4" PARTUUID="{id06}"
/dev/sda4: LABEL="default" UUID="{id07}" UUID_SUB="{id08}" """
"""TYPE="zfs_member" PARTUUID="{id09}"
/dev/loop4: TYPE="squashfs"
""")
maxDiff = None
def _get_expected(self):
return ({
"/dev/loop0": {"DEVNAME": "/dev/loop0", "TYPE": "squashfs"},
"/dev/loop1": {"DEVNAME": "/dev/loop1", "TYPE": "squashfs"},
"/dev/loop2": {"DEVNAME": "/dev/loop2", "TYPE": "squashfs"},
"/dev/loop3": {"DEVNAME": "/dev/loop3", "TYPE": "squashfs"},
"/dev/loop4": {"DEVNAME": "/dev/loop4", "TYPE": "squashfs"},
"/dev/sda1": {"DEVNAME": "/dev/sda1", "TYPE": "vfat",
"UUID": self.ids["id01"],
"PARTUUID": self.ids["id02"]},
"/dev/sda2": {"DEVNAME": "/dev/sda2", "TYPE": "ext4",
"UUID": self.ids["id03"],
"PARTUUID": self.ids["id04"]},
"/dev/sda3": {"DEVNAME": "/dev/sda3", "TYPE": "ext4",
"UUID": self.ids["id05"],
"PARTUUID": self.ids["id06"]},
"/dev/sda4": {"DEVNAME": "/dev/sda4", "TYPE": "zfs_member",
"LABEL": "default",
"UUID": self.ids["id07"],
"UUID_SUB": self.ids["id08"],
"PARTUUID": self.ids["id09"]},
})
@mock.patch("cloudinit.util.subp")
def test_functional_blkid(self, m_subp):
m_subp.return_value = (
self.blkid_out.format(**self.ids), "")
self.assertEqual(self._get_expected(), util.blkid())
m_subp.assert_called_with(["blkid", "-o", "full"], capture=True,
decode="replace")
@mock.patch("cloudinit.util.subp")
def test_blkid_no_cache_uses_no_cache(self, m_subp):
"""blkid should turn off cache if disable_cache is true."""
m_subp.return_value = (
self.blkid_out.format(**self.ids), "")
self.assertEqual(self._get_expected(),
util.blkid(disable_cache=True))
m_subp.assert_called_with(["blkid", "-o", "full", "-c", "/dev/null"],
capture=True, decode="replace")
@mock.patch('cloudinit.util.subp')
class TestUdevadmSettle(CiTestCase):
def test_with_no_params(self, m_subp):
"""called with no parameters."""
util.udevadm_settle()
m_subp.called_once_with(mock.call(['udevadm', 'settle']))
def test_with_exists_and_not_exists(self, m_subp):
"""with exists=file where file does not exist should invoke subp."""
mydev = self.tmp_path("mydev")
util.udevadm_settle(exists=mydev)
m_subp.called_once_with(
['udevadm', 'settle', '--exit-if-exists=%s' % mydev])
def test_with_exists_and_file_exists(self, m_subp):
"""with exists=file where file does exist should not invoke subp."""
mydev = self.tmp_path("mydev")
util.write_file(mydev, "foo\n")
util.udevadm_settle(exists=mydev)
self.assertIsNone(m_subp.call_args)
def test_with_timeout_int(self, m_subp):
"""timeout can be an integer."""
timeout = 9
util.udevadm_settle(timeout=timeout)
m_subp.called_once_with(
['udevadm', 'settle', '--timeout=%s' % timeout])
def test_with_timeout_string(self, m_subp):
"""timeout can be a string."""
timeout = "555"
util.udevadm_settle(timeout=timeout)
m_subp.assert_called_once_with(
['udevadm', 'settle', '--timeout=%s' % timeout])
def test_with_exists_and_timeout(self, m_subp):
"""test call with both exists and timeout."""
mydev = self.tmp_path("mydev")
timeout = "3"
util.udevadm_settle(exists=mydev)
m_subp.called_once_with(
['udevadm', 'settle', '--exit-if-exists=%s' % mydev,
'--timeout=%s' % timeout])
def test_subp_exception_raises_to_caller(self, m_subp):
m_subp.side_effect = util.ProcessExecutionError("BOOM")
self.assertRaises(util.ProcessExecutionError, util.udevadm_settle)
# vi: ts=4 expandtab
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