# 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 logging
import mock

import diskimage_builder.block_device.tests.test_config as tc

from diskimage_builder.block_device.config import create_graph
from diskimage_builder.block_device.level3.mount import MountPointNode

logger = logging.getLogger(__name__)


class TestMountOrder(tc.TestGraphGeneration):

    @mock.patch('diskimage_builder.block_device.level3.mount.exec_sudo')
    def test_mount_order(self, mock_exec_sudo):

        config = self.load_config_file('multiple_partitions_graph.yaml')

        graph, call_order = create_graph(config, self.fake_default_config)

        result = {}
        result['filesys'] = {}
        result['filesys']['mkfs_root'] = {}
        result['filesys']['mkfs_root']['device'] = 'fake'
        result['filesys']['mkfs_var'] = {}
        result['filesys']['mkfs_var']['device'] = 'fake'
        result['filesys']['mkfs_var_log'] = {}
        result['filesys']['mkfs_var_log']['device'] = 'fake'

        rollback = []

        for node in call_order:
            if isinstance(node, MountPointNode):
                # XXX: do we even need to create?  We could test the
                # sudo arguments from the mock in the below asserts
                # too
                node.create(result, rollback)

        # ensure that partitions are mounted in order root->var->var/log
        self.assertListEqual(result['mount_order'], ['/', '/var', '/var/log'])