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borg/darc/test.py
2013-06-18 13:39:46 +02:00

232 lines
10 KiB
Python

import doctest
import filecmp
import os
from io import BytesIO, StringIO
import stat
import sys
import shutil
import tempfile
import unittest
import xattr
from . import helpers, lrucache
from .chunker import chunkify, buzhash, buzhash_update
from .archiver import Archiver
from .key import suite as KeySuite
from .store import Store, suite as StoreSuite
from .remote import Store, suite as RemoteStoreSuite
utime_supports_fd = os.utime in getattr(os, 'supports_fd', {})
class Test(unittest.TestCase):
prefix = ''
def setUp(self):
self.archiver = Archiver()
self.tmpdir = tempfile.mkdtemp()
self.store_path = os.path.join(self.tmpdir, 'store')
self.store_location = self.prefix + self.store_path
self.input_path = os.path.join(self.tmpdir, 'input')
self.output_path = os.path.join(self.tmpdir, 'output')
self.keys_path = os.path.join(self.tmpdir, 'keys')
self.cache_path = os.path.join(self.tmpdir, 'cache')
os.environ['DARC_KEYS_DIR'] = self.keys_path
os.environ['DARC_CACHE_DIR'] = self.cache_path
os.mkdir(self.input_path)
os.mkdir(self.output_path)
os.mkdir(self.keys_path)
os.mkdir(self.cache_path)
os.chdir(self.tmpdir)
def tearDown(self):
shutil.rmtree(self.tmpdir)
def darc(self, *args, **kwargs):
exit_code = kwargs.get('exit_code', 0)
args = list(args)
try:
stdout, stderr = sys.stdout, sys.stderr
output = StringIO()
sys.stdout = sys.stderr = output
ret = self.archiver.run(args)
sys.stdout, sys.stderr = stdout, stderr
if ret != exit_code:
print(output.getvalue())
self.assertEqual(exit_code, ret)
return output.getvalue()
finally:
sys.stdout, sys.stderr = stdout, stderr
def create_src_archive(self, name):
src_dir = os.path.join(os.getcwd(), os.path.dirname(__file__), '..')
self.darc('init', self.store_location)
self.darc('create', self.store_location + '::' + name, src_dir)
def create_regual_file(self, name, size=0):
filename = os.path.join(self.input_path, name)
if not os.path.exists(os.path.dirname(filename)):
os.makedirs(os.path.dirname(filename))
with open(filename, 'wb') as fd:
fd.write(b'X' * size)
def get_xattrs(self, path):
try:
return xattr.get_all(path, True)
except EnvironmentError:
return {}
def diff_dirs(self, dir1, dir2):
diff = filecmp.dircmp(dir1, dir2)
self.assertEqual(diff.left_only, [])
self.assertEqual(diff.right_only, [])
self.assertEqual(diff.diff_files, [])
for filename in diff.common:
path1 = os.path.join(dir1, filename)
path2 = os.path.join(dir2, filename)
s1 = os.lstat(path1)
s2 = os.lstat(path2)
attrs = ['st_mode', 'st_uid', 'st_gid', 'st_rdev']
if not os.path.islink(path1) or utime_supports_fd:
attrs.append('st_mtime')
d1 = [filename] + [getattr(s1, a) for a in attrs]
d2 = [filename] + [getattr(s2, a) for a in attrs]
if(len(d1) == 6):
d1[-1] = int(d1[-1])
d2[-1] = int(d2[-1])
d1.append(self.get_xattrs(path1))
d2.append(self.get_xattrs(path2))
self.assertEqual(d1, d2)
def test_basic_functionality(self):
# File
self.create_regual_file('file1', size=1024 * 80)
# Directory
self.create_regual_file('dir2/file2', size=1024 * 80)
# File owner
os.chown('input/file1', 100, 200)
# File mode
os.chmod('input/file1', 0o7755)
os.chmod('input/dir2', 0o700)
# Block device
os.mknod('input/bdev', 0o600 | stat.S_IFBLK, os.makedev(10, 20))
# Char device
os.mknod('input/cdev', 0o600 | stat.S_IFCHR, os.makedev(30, 40))
xattr.set(os.path.join(self.input_path, 'file1'), 'user.foo', 'bar')
# Hard link
os.link(os.path.join(self.input_path, 'file1'),
os.path.join(self.input_path, 'hardlink'))
# Symlink
os.symlink('somewhere', os.path.join(self.input_path, 'link1'))
# FIFO node
os.mkfifo(os.path.join(self.input_path, 'fifo1'))
self.darc('init', self.store_location)
self.darc('create', self.store_location + '::test', 'input')
self.darc('create', self.store_location + '::test.2', 'input')
self.darc('extract', self.store_location + '::test', 'output')
self.assertEqual(len(self.darc('list', self.store_location).splitlines()), 2)
self.assertEqual(len(self.darc('list', self.store_location + '::test').splitlines()), 9)
self.diff_dirs('input', 'output/input')
info_output = self.darc('info', self.store_location + '::test')
shutil.rmtree(self.cache_path)
info_output2 = self.darc('info', self.store_location + '::test')
# info_output2 starts with some "initializing cache" text but should
# end the same way as info_output
assert info_output2.endswith(info_output)
def test_overwrite(self):
self.create_regual_file('file1', size=1024 * 80)
self.create_regual_file('dir2/file2', size=1024 * 80)
self.darc('init', self.store_location)
self.darc('create', self.store_location + '::test', 'input')
# Overwriting regular files and directories should be supported
os.mkdir('output/input')
os.mkdir('output/input/file1')
os.mkdir('output/input/dir2')
self.darc('extract', self.store_location + '::test', 'output')
self.diff_dirs('input', 'output/input')
# But non-empty dirs should fail
os.unlink('output/input/file1')
os.mkdir('output/input/file1')
os.mkdir('output/input/file1/dir')
self.darc('extract', self.store_location + '::test', 'output', exit_code=1)
def test_delete(self):
self.create_regual_file('file1', size=1024 * 80)
self.create_regual_file('dir2/file2', size=1024 * 80)
self.darc('init', self.store_location)
self.darc('create', self.store_location + '::test', 'input')
self.darc('create', self.store_location + '::test.2', 'input')
self.darc('verify', self.store_location + '::test')
self.darc('verify', self.store_location + '::test.2')
self.darc('delete', self.store_location + '::test')
self.darc('verify', self.store_location + '::test.2')
self.darc('delete', self.store_location + '::test.2')
# Make sure all data except the manifest has been deleted
store = Store(self.store_path)
self.assertEqual(store._len(), 1)
def test_corrupted_store(self):
self.create_src_archive('test')
self.darc('verify', self.store_location + '::test')
name = sorted(os.listdir(os.path.join(self.tmpdir, 'store', 'data', '0')), reverse=True)[0]
fd = open(os.path.join(self.tmpdir, 'store', 'data', '0', name), 'r+')
fd.seek(100)
fd.write('X')
fd.close()
self.darc('verify', self.store_location + '::test', exit_code=1)
def test_prune_store(self):
src_dir = os.path.join(os.getcwd(), os.path.dirname(__file__))
self.darc('init', self.store_location)
self.darc('create', self.store_location + '::test1', src_dir)
self.darc('create', self.store_location + '::test2', src_dir)
self.darc('prune', self.store_location, '--daily=2')
output = self.darc('list', self.store_location)
assert 'test1' not in output
assert 'test2' in output
class ChunkTest(unittest.TestCase):
def test_chunkify(self):
data = b'0' * 1024 * 1024 * 15 + b'Y'
parts = [bytes(c) for c in chunkify(BytesIO(data), 2, 0x3, 2, 0)]
self.assertEqual(len(parts), 2)
self.assertEqual(b''.join(parts), data)
self.assertEqual([bytes(c) for c in chunkify(BytesIO(b''), 2, 0x3, 2, 0)], [])
self.assertEqual([bytes(c) for c in chunkify(BytesIO(b'foobarboobaz' * 3), 2, 0x3, 2, 0)], [b'fooba', b'rboobaz', b'fooba', b'rboobaz', b'fooba', b'rboobaz'])
self.assertEqual([bytes(c) for c in chunkify(BytesIO(b'foobarboobaz' * 3), 2, 0x3, 2, 1)], [b'fo', b'obarb', b'oob', b'azf', b'oobarb', b'oob', b'azf', b'oobarb', b'oobaz'])
self.assertEqual([bytes(c) for c in chunkify(BytesIO(b'foobarboobaz' * 3), 2, 0x3, 2, 2)], [b'foob', b'ar', b'boobazfoob', b'ar', b'boobazfoob', b'ar', b'boobaz'])
self.assertEqual([bytes(c) for c in chunkify(BytesIO(b'foobarboobaz' * 3), 3, 0x3, 3, 0)], [b'foobarboobaz' * 3])
self.assertEqual([bytes(c) for c in chunkify(BytesIO(b'foobarboobaz' * 3), 3, 0x3, 3, 1)], [b'foobar', b'boo', b'bazfo', b'obar', b'boo', b'bazfo', b'obar', b'boobaz'])
self.assertEqual([bytes(c) for c in chunkify(BytesIO(b'foobarboobaz' * 3), 3, 0x3, 3, 2)], [b'foo', b'barboobaz', b'foo', b'barboobaz', b'foo', b'barboobaz'])
self.assertEqual([bytes(c) for c in chunkify(BytesIO(b'foobarboobaz' * 3), 3, 0x3, 4, 0)], [b'foobarboobaz' * 3])
self.assertEqual([bytes(c) for c in chunkify(BytesIO(b'foobarboobaz' * 3), 3, 0x3, 4, 1)], [b'foobar', b'boobazfo', b'obar', b'boobazfo', b'obar', b'boobaz'])
self.assertEqual([bytes(c) for c in chunkify(BytesIO(b'foobarboobaz' * 3), 3, 0x3, 4, 2)], [b'foob', b'arboobaz', b'foob', b'arboobaz', b'foob', b'arboobaz'])
def test_buzhash(self):
self.assertEqual(buzhash(b'abcdefghijklmnop', 0), 3795437769)
self.assertEqual(buzhash(b'abcdefghijklmnop', 1), 3795400502)
self.assertEqual(buzhash(b'abcdefghijklmnop', 1), buzhash_update(buzhash(b'Xabcdefghijklmno', 1), ord('X'), ord('p'), 16, 1))
class RemoteTest(Test):
prefix = 'localhost:'
def suite():
suite = unittest.TestSuite()
suite.addTest(unittest.TestLoader().loadTestsFromTestCase(ChunkTest))
suite.addTest(unittest.TestLoader().loadTestsFromTestCase(Test))
suite.addTest(unittest.TestLoader().loadTestsFromTestCase(RemoteTest))
suite.addTest(KeySuite())
suite.addTest(StoreSuite())
suite.addTest(RemoteStoreSuite())
suite.addTest(doctest.DocTestSuite(helpers))
suite.addTest(lrucache.suite())
return suite
if __name__ == '__main__':
unittest.TextTestRunner(verbosity=2).run(suite())