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# This file is part of cloud-init. See LICENSE file for license information.
from collections import namedtuple
from unittest import mock
import pytest
from cloudinit.config.cc_install_hotplug import (
handle,
HOTPLUG_UDEV_PATH,
HOTPLUG_UDEV_RULES_TEMPLATE,
)
from cloudinit.event import EventScope, EventType
@pytest.yield_fixture()
def mocks():
m_update_enabled = mock.patch('cloudinit.stages.update_event_enabled')
m_write = mock.patch('cloudinit.util.write_file', autospec=True)
m_del = mock.patch('cloudinit.util.del_file', autospec=True)
m_subp = mock.patch('cloudinit.subp.subp')
m_which = mock.patch('cloudinit.subp.which', return_value=None)
m_path_exists = mock.patch('os.path.exists', return_value=False)
yield namedtuple(
'Mocks',
'm_update_enabled m_write m_del m_subp m_which m_path_exists'
)(
m_update_enabled.start(), m_write.start(), m_del.start(),
m_subp.start(), m_which.start(), m_path_exists.start()
)
m_update_enabled.stop()
m_write.stop()
m_del.stop()
m_subp.stop()
m_which.stop()
m_path_exists.stop()
class TestInstallHotplug:
@pytest.mark.parametrize('libexec_exists', [True, False])
def test_rules_installed_when_supported_and_enabled(
self, mocks, libexec_exists
):
mocks.m_which.return_value = 'udevadm'
mocks.m_update_enabled.return_value = True
m_cloud = mock.MagicMock()
m_cloud.datasource.get_supported_events.return_value = {
EventScope.NETWORK: {EventType.HOTPLUG}
}
if libexec_exists:
libexecdir = "/usr/libexec/cloud-init"
else:
libexecdir = "/usr/lib/cloud-init"
with mock.patch('os.path.exists', return_value=libexec_exists):
handle(None, {}, m_cloud, mock.Mock(), None)
mocks.m_write.assert_called_once_with(
filename=HOTPLUG_UDEV_PATH,
content=HOTPLUG_UDEV_RULES_TEMPLATE.format(
libexecdir=libexecdir),
)
assert mocks.m_subp.call_args_list == [mock.call([
'udevadm', 'control', '--reload-rules',
])]
assert mocks.m_del.call_args_list == []
def test_rules_not_installed_when_unsupported(self, mocks):
mocks.m_update_enabled.return_value = True
m_cloud = mock.MagicMock()
m_cloud.datasource.get_supported_events.return_value = {}
handle(None, {}, m_cloud, mock.Mock(), None)
assert mocks.m_write.call_args_list == []
assert mocks.m_del.call_args_list == []
assert mocks.m_subp.call_args_list == []
def test_rules_not_installed_when_disabled(self, mocks):
mocks.m_update_enabled.return_value = False
m_cloud = mock.MagicMock()
m_cloud.datasource.get_supported_events.return_value = {
EventScope.NETWORK: {EventType.HOTPLUG}
}
handle(None, {}, m_cloud, mock.Mock(), None)
assert mocks.m_write.call_args_list == []
assert mocks.m_del.call_args_list == []
assert mocks.m_subp.call_args_list == []
def test_rules_uninstalled_when_disabled(self, mocks):
mocks.m_path_exists.return_value = True
mocks.m_update_enabled.return_value = False
m_cloud = mock.MagicMock()
m_cloud.datasource.get_supported_events.return_value = {}
handle(None, {}, m_cloud, mock.Mock(), None)
mocks.m_del.assert_called_with(HOTPLUG_UDEV_PATH)
assert mocks.m_subp.call_args_list == [mock.call([
'udevadm', 'control', '--reload-rules',
])]
assert mocks.m_write.call_args_list == []
def test_rules_not_installed_when_no_udevadm(self, mocks):
mocks.m_update_enabled.return_value = True
m_cloud = mock.MagicMock()
m_cloud.datasource.get_supported_events.return_value = {
EventScope.NETWORK: {EventType.HOTPLUG}
}
handle(None, {}, m_cloud, mock.Mock(), None)
assert mocks.m_del.call_args_list == []
assert mocks.m_write.call_args_list == []
assert mocks.m_subp.call_args_list == []
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