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import logging
from typing import NoReturn
from pytest import (
fixture, raises
)
from unittest.mock import (
patch, call, Mock
)
from kiwi.exceptions import KiwiCommandError, KiwiUmountBusyError
from kiwi.mount_manager import MountManager
class TestMountManager:
@fixture(autouse=True)
def inject_fixtures(self, caplog):
self._caplog = caplog
@patch('kiwi.mount_manager.Path.create')
def setup(self, mock_path_create):
self.mount_manager = MountManager(
'/dev/some-device', '/some/mountpoint'
)
mock_path_create.assert_called_once_with('/some/mountpoint')
@patch('kiwi.mount_manager.Path.create')
def setup_method(self, cls, mock_path_create):
self.setup()
def test_get_attributes(self):
assert self.mount_manager.get_attributes() == {}
@patch('kiwi.mount_manager.Temporary')
def test_setup_empty_mountpoint(self, mock_Temporary):
mock_Temporary.return_value.new_dir.return_value.name = 'tmpdir'
mount_manager = MountManager('/dev/some-device')
assert mount_manager.mountpoint == 'tmpdir'
@patch('kiwi.mount_manager.Command.run')
@patch('kiwi.mount_manager.MountManager.is_mounted')
def test_bind_mount(self, mock_mounted, mock_command):
mock_mounted.return_value = False
self.mount_manager.bind_mount()
mock_command.assert_called_once_with(
['mount', '-n', '--bind', '/dev/some-device', '/some/mountpoint']
)
@patch('kiwi.mount_manager.Path.create')
@patch('kiwi.mount_manager.Command.run')
@patch('kiwi.mount_manager.MountManager.is_mounted')
def test_overlay_mount(self, mock_mounted, mock_command, mock_path_create):
mock_mounted.return_value = False
self.mount_manager.overlay_mount('lower_path')
assert mock_path_create.call_args_list == [
call('/some/mountpoint_cow'), call('/some/mountpoint_work')
]
mock_command.assert_called_once_with(
[
'mount', '-t', 'overlay', 'overlay', '/some/mountpoint',
'-o', 'lowerdir=lower_path,'
'upperdir=/some/mountpoint_cow,workdir=/some/mountpoint_work'
]
)
@patch('kiwi.mount_manager.Command.run')
@patch('kiwi.mount_manager.MountManager.is_mounted')
def test_tmpfs_mount(self, mock_mounted, mock_command):
mock_mounted.return_value = False
self.mount_manager.tmpfs_mount()
mock_command.assert_called_once_with(
['mount', '-t', 'tmpfs', 'tmpfs', '/some/mountpoint']
)
@patch('kiwi.mount_manager.Command.run')
@patch('kiwi.mount_manager.MountManager.is_mounted')
def test_mount(self, mock_mounted, mock_command):
mock_mounted.return_value = False
self.mount_manager.mount(['options'])
mock_command.assert_called_once_with(
['mount', '-o', 'options', '/dev/some-device', '/some/mountpoint']
)
@patch('kiwi.mount_manager.Command.run')
@patch('kiwi.mount_manager.MountManager.is_mounted')
def test_context_manager(self, mock_mounted, mock_command):
mock_mounted.return_value = True
with self.mount_manager:
pass
mock_command.assert_called_once_with(
['umount', '/some/mountpoint']
)
@patch('kiwi.mount_manager.Command.run')
@patch('kiwi.mount_manager.MountManager.is_mounted')
def test_umount_lazy(self, mock_mounted, mock_command):
mock_mounted.return_value = True
self.mount_manager.umount_lazy()
mock_command.assert_called_once_with(
['umount', '-l', '/some/mountpoint']
)
@patch('kiwi.mount_manager.Command.run')
@patch('kiwi.mount_manager.MountManager.is_mounted')
@patch('time.sleep')
def test_umount_with_errors_but_lazy(
self, mock_sleep, mock_mounted, mock_command
):
command_errors = [
True, False, False, False, False, False
]
def _cmd_err(args) -> NoReturn:
if not command_errors.pop():
raise KiwiCommandError('error')
mock_command.side_effect = _cmd_err
mock_mounted.return_value = True
with self._caplog.at_level(logging.WARNING):
assert self.mount_manager.umount() is True
assert mock_command.call_args_list == [
call(['umount', '/some/mountpoint']), # 1
call(['umount', '/some/mountpoint']), # 2
call(['umount', '/some/mountpoint']), # 3
call(['umount', '/some/mountpoint']), # 4
call(['umount', '/some/mountpoint']), # 5
call(['umount', '--lazy', '/some/mountpoint']), # lazy
]
@patch('kiwi.mount_manager.Command.run')
@patch('kiwi.mount_manager.MountManager.is_mounted')
@patch('time.sleep')
def test_umount_with_errors(
self, mock_sleep, mock_mounted, mock_command
):
def _cmd_err(args) -> NoReturn:
raise KiwiCommandError('error')
mock_command.side_effect = _cmd_err
mock_mounted.return_value = True
with self._caplog.at_level(logging.WARNING):
assert self.mount_manager.umount(raise_on_busy=False) is False
assert mock_command.call_args_list == [
call(['umount', '/some/mountpoint']), # 1
call(['umount', '/some/mountpoint']), # 2
call(['umount', '/some/mountpoint']), # 3
call(['umount', '/some/mountpoint']), # 4
call(['umount', '/some/mountpoint']), # 5
call(['umount', '--lazy', '/some/mountpoint']), # lazy
]
@patch('kiwi.mount_manager.Command.run')
@patch('kiwi.mount_manager.MountManager.is_mounted')
@patch('time.sleep')
@patch('kiwi.mount_manager.Path.which')
def test_umount_with_errors_raises_no_lsof_present(
self, mock_Path_which, mock_sleep, mock_mounted, mock_command
):
def command_call(args):
if 'umount' in args:
raise KiwiCommandError('error')
mock_Path_which.return_value = None
mock_command.side_effect = command_call
mock_mounted.return_value = True
with raises(KiwiUmountBusyError):
self.mount_manager.umount()
@patch('kiwi.mount_manager.Command.run')
@patch('kiwi.mount_manager.MountManager.is_mounted')
@patch('time.sleep')
@patch('kiwi.mount_manager.Path.which')
def test_umount_with_errors_raises_lsof_present(
self, mock_Path_which, mock_sleep, mock_mounted, mock_command
):
def command_call(args, raise_on_error=None):
if 'umount' in args:
raise KiwiCommandError('error')
else:
call_return = Mock()
call_return.output = 'HEADLINE\ndata'
return call_return
mock_Path_which.return_value = 'lsof'
mock_command.side_effect = command_call
mock_mounted.return_value = True
with raises(KiwiUmountBusyError) as issue:
self.mount_manager.umount()
assert 'HEADLINE' in issue.value.message
@patch('kiwi.mount_manager.Command.run')
@patch('kiwi.mount_manager.MountManager.is_mounted')
def test_umount_success(self, mock_mounted, mock_command):
mock_mounted.return_value = True
assert self.mount_manager.umount() is True
mock_command.assert_called_once_with(
['umount', '/some/mountpoint']
)
@patch('kiwi.mount_manager.Command.run')
def test_is_mounted_true(self, mock_command):
command = Mock()
command.returncode = 0
mock_command.return_value = command
assert self.mount_manager.is_mounted() is True
mock_command.assert_called_once_with(
command=['mountpoint', '-q', '/some/mountpoint'],
raise_on_error=False
)
@patch('kiwi.mount_manager.Command.run')
def test_is_mounted_false(self, mock_command):
command = Mock()
command.returncode = 1
mock_command.return_value = command
assert self.mount_manager.is_mounted() is False
mock_command.assert_called_once_with(
command=['mountpoint', '-q', '/some/mountpoint'],
raise_on_error=False
)
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