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# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright 2012 Michael Still and Canonical Inc
# All Rights Reserved.
#
#    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 mox
import os
import tempfile

from nova import test

from nova import utils
from nova.virt import configdrive


class ConfigDriveTestCase(test.TestCase):

    def test_create_configdrive_iso(self):
        imagefile = None

        try:
            self.mox.StubOutWithMock(utils, 'execute')

            utils.execute('genisoimage', '-o', mox.IgnoreArg(), '-ldots',
                          '-allow-lowercase', '-allow-multidot', '-l',
                          '-publisher', mox.IgnoreArg(), '-quiet', '-J', '-r',
                          '-V', 'config-2', mox.IgnoreArg(), attempts=1,
                          run_as_root=False).AndReturn(None)

            self.mox.ReplayAll()

            with configdrive.ConfigDriveBuilder() as c:
                c._add_file('this/is/a/path/hello', 'This is some content')
                (fd, imagefile) = tempfile.mkstemp(prefix='cd_iso_')
                os.close(fd)
                c._make_iso9660(imagefile)

            # Check cleanup
            self.assertFalse(os.path.exists(c.tempdir))

        finally:
            if imagefile:
                utils.delete_if_exists(imagefile)

    def test_create_configdrive_vfat(self):
        imagefile = None
        try:
            self.mox.StubOutWithMock(utils, 'mkfs')
            self.mox.StubOutWithMock(utils, 'execute')
            self.mox.StubOutWithMock(utils, 'trycmd')

            utils.mkfs('vfat', mox.IgnoreArg(),
                       label='config-2').AndReturn(None)
            utils.trycmd('mount', '-o', mox.IgnoreArg(), mox.IgnoreArg(),
                         mox.IgnoreArg(),
                         run_as_root=True).AndReturn((None, None))
            utils.execute('umount', mox.IgnoreArg(),
                          run_as_root=True).AndReturn(None)

            self.mox.ReplayAll()

            with configdrive.ConfigDriveBuilder() as c:
                c._add_file('this/is/a/path/hello', 'This is some content')
                (fd, imagefile) = tempfile.mkstemp(prefix='cd_vfat_')
                os.close(fd)
                c._make_vfat(imagefile)

            # Check cleanup
            self.assertFalse(os.path.exists(c.tempdir))

            # NOTE(mikal): we can't check for a VFAT output here because the
            # filesystem creation stuff has been mocked out because it
            # requires root permissions

        finally:
            if imagefile:
                utils.delete_if_exists(imagefile)