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# -*- Mode:Python; indent-tabs-mode:nil; tab-width:4; encoding:utf-8 -*-
#
# Copyright 2002 Ben Escoto
# Copyright 2007 Kenneth Loafman
#
# This file is part of duplicity.
#
# Duplicity 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 2 of the License, or (at your
# option) any later version.
#
# Duplicity 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 duplicity; if not, write to the Free Software Foundation,
# Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import unittest
from duplicity import diffdir
from duplicity import selection
from duplicity.path import * # pylint: disable=unused-wildcard-import,redefined-builtin
from testing import _runtest_dir
from testing.unit import UnitTestCase
class DDTest(UnitTestCase):
"""Test functions in diffdir.py"""
def setUp(self):
super().setUp()
self.unpack_testfiles()
def copyfileobj(self, infp, outfp):
"""Copy in fileobj to out, closing afterwards"""
blocksize = 32 * 1024
while True:
buf = infp.read(blocksize)
if not buf:
break
outfp.write(buf)
assert not infp.close()
assert not outfp.close()
def testsig(self):
"""Test producing tar signature of various file types"""
select = selection.Select(Path(f"{_runtest_dir}/testfiles/various_file_types"))
select.set_iter()
with open(f"{_runtest_dir}/testfiles/output/sigtar", "wb") as sigtar_fp:
for _ in diffdir.DirFull_WriteSig(select, sigtar_fp):
pass
i = 0
for tarinfo in dup_tarfile.TarFile(f"{_runtest_dir}/testfiles/output/sigtar", "r"):
i += 1
assert i >= 5, "There should be at least 5 files in sigtar"
def empty_diff_schema(self, dirname):
"""Given directory name, make sure can tell when nothing changes"""
select = selection.Select(Path(dirname))
select.set_iter()
with open(f"{_runtest_dir}/testfiles/output/sigtar", "wb") as sigtar_fp:
for _ in diffdir.DirFull_WriteSig(select, sigtar_fp):
pass
sigtar_fp = open(f"{_runtest_dir}/testfiles/output/sigtar", "rb")
select2 = selection.Select(Path(dirname))
select2.set_iter()
diffdir.write_block_iter(
diffdir.DirDelta(select2, sigtar_fp),
f"{_runtest_dir}/testfiles/output/difftar",
)
size = os.stat(f"{_runtest_dir}/testfiles/output/difftar").st_size
assert size == 0 or size == 10240, size # 10240 is size of one record
if size != 0:
fin = open(f"{_runtest_dir}/testfiles/output/difftar", "rb")
diff_buf = fin.read()
assert not fin.close()
assert diff_buf == b"\0" * 10240
def test_empty_diff(self):
"""Test producing a diff against same sig; should be len 0"""
self.empty_diff_schema(f"{_runtest_dir}/testfiles/various_file_types")
select = selection.Select(Path(f"{_runtest_dir}/testfiles/various_file_types"))
select.set_iter()
with open(f"{_runtest_dir}/testfiles/output/sigtar", "wb") as sigtar_fp:
for _ in diffdir.DirFull_WriteSig(select, sigtar_fp):
pass
sigtar_fp = open(f"{_runtest_dir}/testfiles/output/sigtar", "rb")
select2 = selection.Select(Path(f"{_runtest_dir}/testfiles/various_file_types"))
select2.set_iter()
diffdir.write_block_iter(
diffdir.DirDelta(select2, sigtar_fp),
f"{_runtest_dir}/testfiles/output/difftar",
)
size = os.stat(f"{_runtest_dir}/testfiles/output/difftar").st_size
def test_empty_diff2(self):
"""Test producing diff against directories of special files"""
self.empty_diff_schema(f"{_runtest_dir}/testfiles/special_cases/neg_mtime")
self.empty_diff_schema(f"{_runtest_dir}/testfiles/special_cases/no_uname")
def test_diff(self):
"""Test making a diff"""
sel1 = selection.Select(Path(f"{_runtest_dir}/testfiles/dir1"))
sel1.set_iter()
with open(f"{_runtest_dir}/testfiles/output/dir1.sigtar", "wb") as sigtar_fp:
for _ in diffdir.DirFull_WriteSig(sel1, sigtar_fp):
pass
sigtar_fp = open(f"{_runtest_dir}/testfiles/output/dir1.sigtar", "rb")
sel2 = selection.Select(Path(f"{_runtest_dir}/testfiles/dir2"))
delta_tar = diffdir.DirDelta(sel2.set_iter(), sigtar_fp)
diffdir.write_block_iter(delta_tar, f"{_runtest_dir}/testfiles/output/dir1dir2.difftar")
changed_files = [
"diff/changeable_permission",
"diff/regular_file",
"snapshot/symbolic_link/",
"deleted/deleted_file",
"snapshot/directory_to_file",
"snapshot/file_to_directory/",
]
for tarinfo in dup_tarfile.TarFile(f"{_runtest_dir}/testfiles/output/dir1dir2.difftar", "r"):
tiname = util.get_tarinfo_name(tarinfo)
if tiname in changed_files:
changed_files.remove(tiname)
assert not changed_files, "Following files not found:\n" + "\n".join(changed_files)
def test_diff2(self):
"""Another diff test - this one involves multivol support
(requires rdiff to be installed to pass)"""
sel1 = selection.Select(Path(f"{_runtest_dir}/testfiles/dir2"))
sel1.set_iter()
with open(f"{_runtest_dir}/testfiles/output/dir2.sigtar", "wb") as sigtar_fp:
for _ in diffdir.DirFull_WriteSig(sel1, sigtar_fp):
pass
sigtar_fp = open(f"{_runtest_dir}/testfiles/output/dir2.sigtar", "rb")
sel2 = selection.Select(Path(f"{_runtest_dir}/testfiles/dir3"))
delta_tar = diffdir.DirDelta(sel2.set_iter(), sigtar_fp)
diffdir.write_block_iter(delta_tar, f"{_runtest_dir}/testfiles/output/dir2dir3.difftar")
buffer = b""
tf = dup_tarfile.TarFile(f"{_runtest_dir}/testfiles/output/dir2dir3.difftar", "r")
for tarinfo in tf:
if tarinfo.name.startswith(r"multivol_diff/"):
buffer += tf.extractfile(tarinfo).read()
assert 3000000 < len(buffer) < 4000000
fout = open(f"{_runtest_dir}/testfiles/output/largefile.delta", "wb")
fout.write(buffer)
fout.close()
assert not os.system(
f"rdiff patch {_runtest_dir}/testfiles/dir2/largefile "
+ f"{_runtest_dir}/testfiles/output/largefile.delta "
+ f"{_runtest_dir}/testfiles/output/largefile.patched"
)
dir3large = open(f"{_runtest_dir}/testfiles/dir3/largefile", "rb").read()
patchedlarge = open(f"{_runtest_dir}/testfiles/output/largefile.patched", "rb").read()
assert dir3large == patchedlarge
def test_dirdelta_write_sig(self):
"""Test simultaneous delta and sig generation
Generate signatures and deltas of dirs1, 2, 3, 4 and compare
those produced by DirDelta_WriteSig and other methods.
"""
deltadir1 = Path(f"{_runtest_dir}/testfiles/output/dir.deltatar1")
deltadir2 = Path(f"{_runtest_dir}/testfiles/output/dir.deltatar2")
cur_full_sigs = Path(f"{_runtest_dir}/testfiles/output/fullsig.dir1")
cur_dir = Path(f"{_runtest_dir}/testfiles/dir1")
get_sel = lambda cur_dir: selection.Select(cur_dir).set_iter()
with cur_full_sigs.open("wb") as sigtar_fp:
for _ in diffdir.DirFull_WriteSig(get_sel(cur_dir), sigtar_fp):
pass
sigstack = [cur_full_sigs]
for dirname in ["dir2", "dir3", "dir4"]:
# print "Processing ", dirname
old_dir = cur_dir
cur_dir = Path(f"{_runtest_dir}/testfiles/" + dirname)
old_full_sigs = cur_full_sigs
cur_full_sigs = Path(f"{_runtest_dir}/testfiles/output/fullsig." + dirname)
delta1 = Path(f"{_runtest_dir}/testfiles/output/delta1." + dirname)
delta2 = Path(f"{_runtest_dir}/testfiles/output/delta2." + dirname)
incsig = Path(f"{_runtest_dir}/testfiles/output/incsig." + dirname)
# Write old-style delta to deltadir1
diffdir.write_block_iter(diffdir.DirDelta(get_sel(cur_dir), old_full_sigs.open("rb")), delta1)
# Write new signature and delta to deltadir2 and sigdir2, compare
block_iter = diffdir.DirDelta_WriteSig(
get_sel(cur_dir), [p.open("rb") for p in sigstack], incsig.open("wb")
)
sigstack.append(incsig)
diffdir.write_block_iter(block_iter, delta2)
# print delta1.name, delta2.name
compare_tar(delta1.open("rb"), delta2.open("rb"))
assert not os.system(f"cmp {delta1.uc_name} {delta2.uc_name}")
# Write old-style signature to cur_full_sigs
with cur_full_sigs.open("wb") as sigtar_fp:
for _ in diffdir.DirFull_WriteSig(get_sel(cur_dir), sigtar_fp):
pass
def test_combine_path_iters(self):
"""Test diffdir.combine_path_iters"""
class Dummy(object):
def __init__(self, index, other=None):
self.index = index
self.other = other
def __repr__(self):
return f"({self.index} {self.other})"
def get_iter1():
yield Dummy(())
yield Dummy((1,))
yield Dummy((1, 5), 2)
def get_iter2():
yield Dummy((), 2)
yield Dummy((1, 5))
yield Dummy((2,))
def get_iter3():
yield Dummy((), 3)
yield Dummy((2,), 1)
result = diffdir.combine_path_iters([get_iter1(), get_iter2(), get_iter3()])
elem1 = next(result)
assert elem1.index == () and elem1.other == 3, elem1
elem2 = next(result)
assert elem2.index == (1,) and elem2.other is None, elem2
elem3 = next(result)
assert elem3.index == (1, 5) and elem3.other is None
elem4 = next(result)
assert elem4.index == (2,) and elem4.other == 1
try:
elem5 = next(result)
except StopIteration:
pass
else:
assert 0, elem5
def compare_tar(tarfile1, tarfile2):
"""Compare two tarfiles"""
tf1 = dup_tarfile.TarFile("none", "r", tarfile1)
tf2 = dup_tarfile.TarFile("none", "r", tarfile2)
tf2_iter = iter(tf2)
for ti1 in tf1:
try:
ti2 = next(tf2_iter)
except StopIteration:
assert 0, f"Premature end to second dup_tarfile, ti1.name = {ti1.name}"
# print "Comparing ", ti1.name, ti2.name
assert tarinfo_eq(ti1, ti2), f"{ti1.name} {ti2.name}"
if ti1.size != 0:
fp1 = tf1.extractfile(ti1)
buf1 = fp1.read()
fp1.close()
fp2 = tf2.extractfile(ti2)
buf2 = fp2.read()
fp2.close()
assert buf1 == buf2
try:
ti2 = next(tf2_iter)
except StopIteration:
pass
else:
assert 0, f"Premature end to first dup_tarfile, ti2.name = {ti2.name}"
tarfile1.close()
tarfile2.close()
def tarinfo_eq(ti1, ti2):
if ti1.name != ti2.name:
print("Name:", ti1.name, ti2.name)
return 0
if ti1.size != ti2.size:
print("Size:", ti1.size, ti2.size)
return 0
if ti1.mtime != ti2.mtime:
print("Mtime:", ti1.mtime, ti2.mtime)
return 0
if ti1.mode != ti2.mode:
print("Mode:", ti1.mode, ti2.mode)
return 0
if ti1.type != ti2.type:
print("Type:", ti1.type, ti2.type)
return 0
if ti1.issym() or ti1.islnk():
if ti1.linkname != ti2.linkname:
print("Linkname:", ti1.linkname, ti2.linkname)
return 0
if ti1.uid != ti2.uid or ti1.gid != ti2.gid:
print("IDs:", ti1.uid, ti2.uid, ti1.gid, ti2.gid)
return 0
if ti1.uname != ti2.uname or ti1.gname != ti2.gname:
print("Owner names:", ti1.uname, ti2.uname, ti1.gname, ti2.gname)
return 0
return 1
if __name__ == "__main__":
unittest.main()
|
