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# -*- Mode:Python; indent-tabs-mode:nil; tab-width:4 -*-
#
# Copyright 2002 Ben Escoto <ben@emerose.org>
# Copyright 2007 Kenneth Loafman <kenneth@loafman.com>
#
# 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 config
import sys, os, unittest
sys.path.insert(0, "../")
from duplicity.path import *
from duplicity import diffdir
from duplicity import selection
from duplicity import tarfile
from duplicity import log
config.setup()
class DDTest(unittest.TestCase):
"""Test functions in diffdir.py"""
def setUp(self):
assert not os.system("tar xzf testfiles.tar.gz > /dev/null 2>&1")
def tearDown(self):
assert not os.system("rm -rf testfiles tempdir temp2.tar")
def copyfileobj(self, infp, outfp):
"""Copy in fileobj to out, closing afterwards"""
blocksize = 32 * 1024
while 1:
buf = infp.read(blocksize)
if not buf: break
outfp.write(buf)
assert not infp.close()
assert not outfp.close()
def deltmp(self):
"""Delete temporary directories"""
assert not os.system("rm -rf testfiles/output")
os.mkdir("testfiles/output")
def testsig(self):
"""Test producing tar signature of various file types"""
self.deltmp()
select = selection.Select(Path("testfiles/various_file_types"))
select.set_iter()
sigtar = diffdir.SigTarBlockIter(select)
diffdir.write_block_iter(sigtar, "testfiles/output/sigtar")
i = 0
for tarinfo in tarfile.TarFile("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"""
self.deltmp()
select = selection.Select(Path(dirname))
select.set_iter()
sigtar = diffdir.SigTarBlockIter(select)
diffdir.write_block_iter(sigtar, "testfiles/output/sigtar")
sigtar_fp = open("testfiles/output/sigtar")
select2 = selection.Select(Path(dirname))
select2.set_iter()
diffdir.write_block_iter(diffdir.DirDelta(select2, sigtar_fp),
"testfiles/output/difftar")
size = os.stat("testfiles/output/difftar").st_size
assert size == 0 or size == 10240, size # 10240 is size of one record
if size != 0:
fin = open("testfiles/output/difftar", "rb")
diff_buf = fin.read()
assert not fin.close()
assert diff_buf == '\0'*10240
def test_empty_diff(self):
"""Test producing a diff against same sig; should be len 0"""
self.empty_diff_schema("testfiles/various_file_types")
return
self.deltmp()
select = selection.Select(Path("testfiles/various_file_types"))
select.set_iter()
sigtar = diffdir.SigTarBlockIter(select)
diffdir.write_block_iter(sigtar, "testfiles/output/sigtar")
sigtar_fp = open("testfiles/output/sigtar")
select2 = selection.Select(Path("testfiles/various_file_types"))
select2.set_iter()
diffdir.write_block_iter(diffdir.DirDelta(select2, sigtar_fp),
"testfiles/output/difftar")
size = os.stat("testfiles/output/difftar").st_size
def test_empty_diff2(self):
"""Test producing diff against directories of special files"""
self.empty_diff_schema("testfiles/special_cases/neg_mtime")
self.empty_diff_schema("testfiles/special_cases/no_uname")
def test_diff(self):
"""Test making a diff"""
self.deltmp()
sel1 = selection.Select(Path("testfiles/dir1"))
diffdir.write_block_iter(diffdir.SigTarBlockIter(sel1.set_iter()),
"testfiles/output/dir1.sigtar")
sigtar_fp = open("testfiles/output/dir1.sigtar", "rb")
sel2 = selection.Select(Path("testfiles/dir2"))
delta_tar = diffdir.DirDelta(sel2.set_iter(), sigtar_fp)
diffdir.write_block_iter(delta_tar,
"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 tarfile.TarFile("testfiles/output/dir1dir2.difftar",
"r"):
if tarinfo.name in changed_files:
changed_files.remove(tarinfo.name)
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"""
self.deltmp()
sel1 = selection.Select(Path("testfiles/dir2"))
diffdir.write_block_iter(diffdir.SigTarBlockIter(sel1.set_iter()),
"testfiles/output/dir2.sigtar")
sigtar_fp = open("testfiles/output/dir2.sigtar", "rb")
sel2 = selection.Select(Path("testfiles/dir3"))
delta_tar = diffdir.DirDelta(sel2.set_iter(), sigtar_fp)
diffdir.write_block_iter(delta_tar,
"testfiles/output/dir2dir3.difftar")
buffer = ""
tf = tarfile.TarFile("testfiles/output/dir2dir3.difftar", "r")
for tarinfo in tf:
if tarinfo.name.startswith("multivol_diff/"):
buffer += tf.extractfile(tarinfo).read()
assert 3000000 < len(buffer) < 4000000
fout = open("testfiles/output/largefile.delta", "wb")
fout.write(buffer)
fout.close()
assert not os.system("rdiff patch testfiles/dir2/largefile "
"testfiles/output/largefile.delta "
"testfiles/output/largefile.patched")
dir3large = open("testfiles/dir3/largefile", "rb").read()
patchedlarge = open("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.
"""
self.deltmp()
deltadir1 = Path("testfiles/output/dir.deltatar1")
deltadir2 = Path("testfiles/output/dir.deltatar2")
cur_full_sigs = Path("testfiles/output/fullsig.dir1")
cur_dir = Path("testfiles/dir1")
get_sel = lambda cur_dir: selection.Select(cur_dir).set_iter()
diffdir.write_block_iter(diffdir.SigTarBlockIter(get_sel(cur_dir)),
cur_full_sigs)
sigstack = [cur_full_sigs]
for dirname in ['dir2', 'dir3', 'dir4']:
#print "Processing ", dirname
old_dir = cur_dir
cur_dir = Path("testfiles/" + dirname)
old_full_sigs = cur_full_sigs
cur_full_sigs = Path("testfiles/output/fullsig." + dirname)
delta1 = Path("testfiles/output/delta1." + dirname)
delta2 = Path("testfiles/output/delta2." + dirname)
incsig = Path("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),
map(lambda p: p.open("rb"), 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("cmp %s %s" % (delta1.name, delta2.name))
# Write old-style signature to cur_full_sigs
diffdir.write_block_iter(diffdir.SigTarBlockIter(get_sel(cur_dir)),
cur_full_sigs)
def test_combine_path_iters(self):
"""Test diffdir.combine_path_iters"""
class Dummy:
def __init__(self, index, other = None):
self.index = index
self.other = other
def __repr__(self): return "(%s %s)" % (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 = result.next()
assert elem1.index == () and elem1.other == 3, elem1
elem2 = result.next()
assert elem2.index == (1,) and elem2.other is None, elem2
elem3 = result.next()
assert elem3.index == (1,5) and elem3.other is None
elem4 = result.next()
assert elem4.index == (2,) and elem4.other == 1
try: elem5 = result.next()
except StopIteration: pass
else: assert 0, elem5
def compare_tar(tarfile1, tarfile2):
"""Compare two tarfiles"""
tf1 = tarfile.TarFile("none", "r", tarfile1)
tf2 = tarfile.TarFile("none", "r", tarfile2)
tf2_iter = iter(tf2)
for ti1 in tf1:
try: ti2 = tf2_iter.next()
except StopIteration:
assert 0, ("Premature end to second tarfile, "
"ti1.name = %s" % ti1.name)
#print "Comparing ", ti1.name, ti2.name
assert tarinfo_eq(ti1, ti2), "%s %s" % (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 = tf2_iter.next()
except StopIteration: pass
else: assert 0, ("Premature end to first tarfile, "
"ti2.name = %s" % 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()
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