/usr/share/pyshared/obnamlib/metadata_tests.py is in obnam 1.6.1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
import os
import stat
import tempfile
import unittest
import platform
import obnamlib
class FakeFS(object):
def __init__(self):
self.st_atime_sec = 1
self.st_atime_nsec = 11
self.st_blocks = 2
self.st_dev = 3
self.st_gid = 4
self.st_ino = 5
self.st_mode = 6
self.st_mtime_sec = 7
self.st_mtime_nsec = 71
self.st_nlink = 8
self.st_size = 9
self.st_uid = 10
self.groupname = 'group'
self.username = 'user'
self.target = 'target'
def lstat(self, filename):
return self
def readlink(self, filename):
return 'target'
def getpwuid(self, uid):
return (self.username, None, self.st_uid, self.st_gid,
None, None, None)
def getgrgid(self, gid):
return (self.groupname, None, self.st_gid, None)
def fail_getpwuid(self, uid):
raise KeyError(uid)
def fail_getgrgid(self, gid):
raise KeyError(gid)
def llistxattr(self, filename):
return []
class MetadataTests(unittest.TestCase):
def test_sets_mtime_from_kwarg(self):
metadata = obnamlib.Metadata(st_mtime_sec=123)
self.assertEqual(metadata.st_mtime_sec, 123)
def test_isdir_returns_false_for_regular_file(self):
metadata = obnamlib.Metadata(st_mode=stat.S_IFREG)
self.assertFalse(metadata.isdir())
def test_isdir_returns_true_for_directory(self):
metadata = obnamlib.Metadata(st_mode=stat.S_IFDIR)
self.assert_(metadata.isdir())
def test_isdir_returns_false_when_st_mode_is_not_set(self):
metadata = obnamlib.Metadata()
self.assertFalse(metadata.isdir())
def test_islink_returns_false_for_regular_file(self):
metadata = obnamlib.Metadata(st_mode=stat.S_IFREG)
self.assertFalse(metadata.islink())
def test_islink_returns_true_for_symlink(self):
metadata = obnamlib.Metadata(st_mode=stat.S_IFLNK)
self.assert_(metadata.islink())
def test_islink_returns_false_when_st_mode_is_not_set(self):
metadata = obnamlib.Metadata()
self.assertFalse(metadata.islink())
def test_isfile_returns_true_for_regular_file(self):
metadata = obnamlib.Metadata(st_mode=stat.S_IFREG)
self.assert_(metadata.isfile())
def test_isfile_returns_false_when_st_mode_is_not_set(self):
metadata = obnamlib.Metadata()
self.assertFalse(metadata.isfile())
def test_has_no_md5_by_default(self):
metadata = obnamlib.Metadata()
self.assertEqual(metadata.md5, None)
def test_sets_md5(self):
metadata = obnamlib.Metadata(md5='checksum')
self.assertEqual(metadata.md5, 'checksum')
def test_is_equal_to_itself(self):
metadata = obnamlib.Metadata(st_mode=stat.S_IFREG)
self.assertEqual(metadata, metadata)
def test_less_than_works(self):
m1 = obnamlib.Metadata(st_size=1)
m2 = obnamlib.Metadata(st_size=2)
self.assert_(m1 < m2)
def test_greater_than_works(self):
m1 = obnamlib.Metadata(st_size=1)
m2 = obnamlib.Metadata(st_size=2)
self.assert_(m2 > m1)
class ReadMetadataTests(unittest.TestCase):
def setUp(self):
self.fakefs = FakeFS()
def test_returns_stat_fields_correctly(self):
metadata = obnamlib.read_metadata(self.fakefs, 'foo',
getpwuid=self.fakefs.getpwuid,
getgrgid=self.fakefs.getgrgid)
fields = ['st_atime_sec','st_atime_nsec', 'st_blocks', 'st_dev',
'st_gid', 'st_ino', 'st_mode', 'st_mtime_sec',
'st_mtime_nsec', 'st_nlink', 'st_size', 'st_uid',
'groupname', 'username']
for field in fields:
self.assertEqual(getattr(metadata, field),
getattr(self.fakefs, field),
field)
def test_returns_symlink_fields_correctly(self):
self.fakefs.st_mode |= stat.S_IFLNK;
metadata = obnamlib.read_metadata(self.fakefs, 'foo',
getpwuid=self.fakefs.getpwuid,
getgrgid=self.fakefs.getgrgid)
fields = ['st_mode', 'target']
for field in fields:
self.assertEqual(getattr(metadata, field),
getattr(self.fakefs, field),
field)
def test_reads_username_as_None_if_lookup_fails(self):
metadata = obnamlib.read_metadata(self.fakefs, 'foo',
getpwuid=self.fakefs.fail_getpwuid,
getgrgid=self.fakefs.fail_getgrgid)
self.assertEqual(metadata.username, None)
class SetMetadataTests(unittest.TestCase):
def setUp(self):
self.metadata = obnamlib.Metadata()
self.metadata.st_atime_sec = 12765
self.metadata.st_atime_nsec = 0
self.metadata.st_mode = 42 | stat.S_IFREG
self.metadata.st_mtime_sec = 10**9
self.metadata.st_mtime_nsec = 0
self.metadata.st_uid = 1234
self.metadata.st_gid = 5678
fd, self.filename = tempfile.mkstemp()
os.close(fd)
# On some systems (e.g. FreeBSD) /tmp is apparently setgid and
# default gid of files is therefore not the user's gid.
os.chown(self.filename, os.getuid(), os.getgid())
self.fs = obnamlib.LocalFS('/')
self.fs.connect()
self.uid_set = None
self.gid_set = None
self.fs.lchown = self.fake_lchown
obnamlib.set_metadata(self.fs, self.filename, self.metadata)
self.st = os.stat(self.filename)
def tearDown(self):
self.fs.close()
os.remove(self.filename)
def fake_lchown(self, filename, uid, gid):
self.uid_set = uid
self.gid_set = gid
def test_sets_atime(self):
self.assertEqual(self.st.st_atime, self.metadata.st_atime_sec)
def test_sets_mode(self):
self.assertEqual(self.st.st_mode, self.metadata.st_mode)
def test_sets_mtime(self):
self.assertEqual(self.st.st_mtime, self.metadata.st_mtime_sec)
def test_does_not_set_uid_when_not_running_as_root(self):
self.assertEqual(self.st.st_uid, os.getuid())
def test_does_not_set_gid_when_not_running_as_root(self):
self.assertEqual(self.st.st_gid, os.getgid())
def test_sets_uid_when_running_as_root(self):
obnamlib.set_metadata(self.fs, self.filename, self.metadata,
getuid=lambda: 0)
self.assertEqual(self.uid_set, self.metadata.st_uid)
def test_sets_gid_when_running_as_root(self):
obnamlib.set_metadata(self.fs, self.filename, self.metadata,
getuid=lambda: 0)
self.assertEqual(self.gid_set, self.metadata.st_gid)
def test_sets_symlink_target(self):
self.fs.remove(self.filename)
self.metadata.st_mode = 0777 | stat.S_IFLNK;
self.metadata.target = 'target'
obnamlib.set_metadata(self.fs, self.filename, self.metadata)
self.assertEqual(self.fs.readlink(self.filename), 'target')
def test_sets_symlink_mtime_perms(self):
self.fs.remove(self.filename)
self.metadata.st_mode = 0777 | stat.S_IFLNK;
self.metadata.target = 'target'
obnamlib.set_metadata(self.fs, self.filename, self.metadata)
st = os.lstat(self.filename)
self.assertEqual(st.st_mode, self.metadata.st_mode)
self.assertEqual(st.st_mtime, self.metadata.st_mtime_sec)
class MetadataCodingTests(unittest.TestCase):
def equal(self, meta1, meta2):
for name in dir(meta1):
if name in obnamlib.metadata.metadata_fields:
value1 = getattr(meta1, name)
value2 = getattr(meta2, name)
self.assertEqual(
value1,
value2,
'attribute %s must be equal (%s vs %s)' %
(name, value1, value2))
def test_round_trip(self):
metadata = obnamlib.metadata.Metadata(st_mode=1,
st_mtime_sec=2,
st_mtime_nsec=12756,
st_nlink=3,
st_size=4,
st_uid=5,
st_blocks=6,
st_dev=7,
st_gid=8,
st_ino=9,
st_atime_sec=10,
st_atime_nsec=123,
groupname='group',
username='user',
target='target',
md5='checksum')
encoded = obnamlib.encode_metadata(metadata)
decoded = obnamlib.decode_metadata(encoded)
self.equal(metadata, decoded)
def test_round_trip_for_None_values(self):
metadata = obnamlib.metadata.Metadata()
encoded = obnamlib.encode_metadata(metadata)
decoded = obnamlib.decode_metadata(encoded)
for name in dir(metadata):
if name in obnamlib.metadata.metadata_fields:
self.assertEqual(getattr(decoded, name), None,
'attribute %s must be None' % name)
def test_round_trip_for_maximum_values(self):
unsigned_max = 2**64 - 1
signed_max = 2**63 - 1
metadata = obnamlib.metadata.Metadata(
st_mode=unsigned_max,
st_mtime_sec=signed_max,
st_mtime_nsec=unsigned_max,
st_nlink=unsigned_max,
st_size=signed_max,
st_uid=unsigned_max,
st_blocks=signed_max,
st_dev=unsigned_max,
st_gid=unsigned_max,
st_ino=unsigned_max,
st_atime_sec=signed_max,
st_atime_nsec=unsigned_max)
encoded = obnamlib.encode_metadata(metadata)
decoded = obnamlib.decode_metadata(encoded)
self.equal(metadata, decoded)
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