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# Copyright (C) 2018 Facebook
#
# This file is part of libbtrfsutil.
#
# libbtrfsutil is free software: you can redistribute it and/or modify
# it under the terms of the GNU Lesser General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# libbtrfsutil is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with libbtrfsutil. If not, see <http://www.gnu.org/licenses/>.
import os
from pathlib import PurePath
import subprocess
import tempfile
import unittest
HAVE_PATH_LIKE = hasattr(PurePath, '__fspath__')
@unittest.skipIf(os.geteuid() != 0, 'must be run as root')
class BtrfsTestCase(unittest.TestCase):
def setUp(self):
self.mountpoint = tempfile.mkdtemp()
try:
with tempfile.NamedTemporaryFile(delete=False) as f:
os.truncate(f.fileno(), 1024 * 1024 * 1024)
self.image = f.name
except Exception as e:
os.rmdir(self.mountpoint)
raise e
try:
subprocess.check_call(['mkfs.btrfs', '-q', self.image])
subprocess.check_call(['mount', '-o', 'loop', '--', self.image, self.mountpoint])
except Exception as e:
os.remove(self.image)
os.rmdir(self.mountpoint)
raise e
def tearDown(self):
try:
subprocess.check_call(['umount', self.mountpoint])
finally:
os.remove(self.image)
os.rmdir(self.mountpoint)
@staticmethod
def path_or_fd(path, open_flags=os.O_RDONLY):
yield path
yield path.encode()
if HAVE_PATH_LIKE:
yield PurePath(path)
fd = os.open(path, open_flags)
try:
yield fd
finally:
os.close(fd)
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