You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
256 lines
9.1 KiB
256 lines
9.1 KiB
# Copyright (C) 2010, 2011 Sebastian Thiel (byronimo@gmail.com) and contributors
|
|
#
|
|
# This module is part of GitDB and is released under
|
|
# the New BSD License: http://www.opensource.org/licenses/bsd-license.php
|
|
"""Test everything about packs reading and writing"""
|
|
from gitdb.test.lib import (
|
|
TestBase,
|
|
with_rw_directory,
|
|
fixture_path
|
|
)
|
|
|
|
from gitdb.stream import DeltaApplyReader
|
|
|
|
from gitdb.pack import (
|
|
PackEntity,
|
|
PackIndexFile,
|
|
PackFile
|
|
)
|
|
|
|
from gitdb.base import (
|
|
OInfo,
|
|
OStream,
|
|
)
|
|
|
|
from gitdb.fun import delta_types
|
|
from gitdb.exc import UnsupportedOperation
|
|
from gitdb.util import to_bin_sha
|
|
from gitdb.utils.compat import xrange
|
|
|
|
try:
|
|
from itertools import izip
|
|
except ImportError:
|
|
izip = zip
|
|
|
|
from nose import SkipTest
|
|
|
|
import os
|
|
import tempfile
|
|
|
|
|
|
#{ Utilities
|
|
def bin_sha_from_filename(filename):
|
|
return to_bin_sha(os.path.splitext(os.path.basename(filename))[0][5:])
|
|
#} END utilities
|
|
|
|
|
|
class TestPack(TestBase):
|
|
|
|
packindexfile_v1 = (fixture_path('packs/pack-c0438c19fb16422b6bbcce24387b3264416d485b.idx'), 1, 67)
|
|
packindexfile_v2 = (fixture_path('packs/pack-11fdfa9e156ab73caae3b6da867192221f2089c2.idx'), 2, 30)
|
|
packindexfile_v2_3_ascii = (fixture_path('packs/pack-a2bf8e71d8c18879e499335762dd95119d93d9f1.idx'), 2, 42)
|
|
packfile_v2_1 = (fixture_path('packs/pack-c0438c19fb16422b6bbcce24387b3264416d485b.pack'), 2, packindexfile_v1[2])
|
|
packfile_v2_2 = (fixture_path('packs/pack-11fdfa9e156ab73caae3b6da867192221f2089c2.pack'), 2, packindexfile_v2[2])
|
|
packfile_v2_3_ascii = (
|
|
fixture_path('packs/pack-a2bf8e71d8c18879e499335762dd95119d93d9f1.pack'), 2, packindexfile_v2_3_ascii[2])
|
|
|
|
def _assert_index_file(self, index, version, size):
|
|
assert index.packfile_checksum() != index.indexfile_checksum()
|
|
assert len(index.packfile_checksum()) == 20
|
|
assert len(index.indexfile_checksum()) == 20
|
|
assert index.version() == version
|
|
assert index.size() == size
|
|
assert len(index.offsets()) == size
|
|
|
|
# get all data of all objects
|
|
for oidx in xrange(index.size()):
|
|
sha = index.sha(oidx)
|
|
assert oidx == index.sha_to_index(sha)
|
|
|
|
entry = index.entry(oidx)
|
|
assert len(entry) == 3
|
|
|
|
assert entry[0] == index.offset(oidx)
|
|
assert entry[1] == sha
|
|
assert entry[2] == index.crc(oidx)
|
|
|
|
# verify partial sha
|
|
for l in (4, 8, 11, 17, 20):
|
|
assert index.partial_sha_to_index(sha[:l], l * 2) == oidx
|
|
|
|
# END for each object index in indexfile
|
|
self.failUnlessRaises(ValueError, index.partial_sha_to_index, "\0", 2)
|
|
|
|
def _assert_pack_file(self, pack, version, size):
|
|
assert pack.version() == 2
|
|
assert pack.size() == size
|
|
assert len(pack.checksum()) == 20
|
|
|
|
num_obj = 0
|
|
for obj in pack.stream_iter():
|
|
num_obj += 1
|
|
info = pack.info(obj.pack_offset)
|
|
stream = pack.stream(obj.pack_offset)
|
|
|
|
assert info.pack_offset == stream.pack_offset
|
|
assert info.type_id == stream.type_id
|
|
assert hasattr(stream, 'read')
|
|
|
|
# it should be possible to read from both streams
|
|
assert obj.read() == stream.read()
|
|
|
|
streams = pack.collect_streams(obj.pack_offset)
|
|
assert streams
|
|
|
|
# read the stream
|
|
try:
|
|
dstream = DeltaApplyReader.new(streams)
|
|
except ValueError:
|
|
# ignore these, old git versions use only ref deltas,
|
|
# which we havent resolved ( as we are without an index )
|
|
# Also ignore non-delta streams
|
|
continue
|
|
# END get deltastream
|
|
|
|
# read all
|
|
data = dstream.read()
|
|
assert len(data) == dstream.size
|
|
|
|
# test seek
|
|
dstream.seek(0)
|
|
assert dstream.read() == data
|
|
|
|
# read chunks
|
|
# NOTE: the current implementation is safe, it basically transfers
|
|
# all calls to the underlying memory map
|
|
|
|
# END for each object
|
|
assert num_obj == size
|
|
|
|
def test_pack_index(self):
|
|
# check version 1 and 2
|
|
for indexfile, version, size in (self.packindexfile_v1, self.packindexfile_v2):
|
|
index = PackIndexFile(indexfile)
|
|
self._assert_index_file(index, version, size)
|
|
# END run tests
|
|
|
|
def test_pack(self):
|
|
# there is this special version 3, but apparently its like 2 ...
|
|
for packfile, version, size in (self.packfile_v2_3_ascii, self.packfile_v2_1, self.packfile_v2_2):
|
|
pack = PackFile(packfile)
|
|
self._assert_pack_file(pack, version, size)
|
|
# END for each pack to test
|
|
|
|
@with_rw_directory
|
|
def test_pack_entity(self, rw_dir):
|
|
pack_objs = list()
|
|
for packinfo, indexinfo in ((self.packfile_v2_1, self.packindexfile_v1),
|
|
(self.packfile_v2_2, self.packindexfile_v2),
|
|
(self.packfile_v2_3_ascii, self.packindexfile_v2_3_ascii)):
|
|
packfile, version, size = packinfo
|
|
indexfile, version, size = indexinfo
|
|
entity = PackEntity(packfile)
|
|
assert entity.pack().path() == packfile
|
|
assert entity.index().path() == indexfile
|
|
pack_objs.extend(entity.stream_iter())
|
|
|
|
count = 0
|
|
for info, stream in izip(entity.info_iter(), entity.stream_iter()):
|
|
count += 1
|
|
assert info.binsha == stream.binsha
|
|
assert len(info.binsha) == 20
|
|
assert info.type_id == stream.type_id
|
|
assert info.size == stream.size
|
|
|
|
# we return fully resolved items, which is implied by the sha centric access
|
|
assert not info.type_id in delta_types
|
|
|
|
# try all calls
|
|
assert len(entity.collect_streams(info.binsha))
|
|
oinfo = entity.info(info.binsha)
|
|
assert isinstance(oinfo, OInfo)
|
|
assert oinfo.binsha is not None
|
|
ostream = entity.stream(info.binsha)
|
|
assert isinstance(ostream, OStream)
|
|
assert ostream.binsha is not None
|
|
|
|
# verify the stream
|
|
try:
|
|
assert entity.is_valid_stream(info.binsha, use_crc=True)
|
|
except UnsupportedOperation:
|
|
pass
|
|
# END ignore version issues
|
|
assert entity.is_valid_stream(info.binsha, use_crc=False)
|
|
# END for each info, stream tuple
|
|
assert count == size
|
|
|
|
# END for each entity
|
|
|
|
# pack writing - write all packs into one
|
|
# index path can be None
|
|
pack_path1 = tempfile.mktemp('', "pack1", rw_dir)
|
|
pack_path2 = tempfile.mktemp('', "pack2", rw_dir)
|
|
index_path = tempfile.mktemp('', 'index', rw_dir)
|
|
iteration = 0
|
|
|
|
def rewind_streams():
|
|
for obj in pack_objs:
|
|
obj.stream.seek(0)
|
|
# END utility
|
|
for ppath, ipath, num_obj in zip((pack_path1, pack_path2),
|
|
(index_path, None),
|
|
(len(pack_objs), None)):
|
|
iwrite = None
|
|
if ipath:
|
|
ifile = open(ipath, 'wb')
|
|
iwrite = ifile.write
|
|
# END handle ip
|
|
|
|
# make sure we rewind the streams ... we work on the same objects over and over again
|
|
if iteration > 0:
|
|
rewind_streams()
|
|
# END rewind streams
|
|
iteration += 1
|
|
|
|
with open(ppath, 'wb') as pfile:
|
|
pack_sha, index_sha = PackEntity.write_pack(pack_objs, pfile.write, iwrite, object_count=num_obj)
|
|
assert os.path.getsize(ppath) > 100
|
|
|
|
# verify pack
|
|
pf = PackFile(ppath)
|
|
assert pf.size() == len(pack_objs)
|
|
assert pf.version() == PackFile.pack_version_default
|
|
assert pf.checksum() == pack_sha
|
|
pf.close()
|
|
|
|
# verify index
|
|
if ipath is not None:
|
|
ifile.close()
|
|
assert os.path.getsize(ipath) > 100
|
|
idx = PackIndexFile(ipath)
|
|
assert idx.version() == PackIndexFile.index_version_default
|
|
assert idx.packfile_checksum() == pack_sha
|
|
assert idx.indexfile_checksum() == index_sha
|
|
assert idx.size() == len(pack_objs)
|
|
idx.close()
|
|
# END verify files exist
|
|
# END for each packpath, indexpath pair
|
|
|
|
# verify the packs thoroughly
|
|
rewind_streams()
|
|
entity = PackEntity.create(pack_objs, rw_dir)
|
|
count = 0
|
|
for info in entity.info_iter():
|
|
count += 1
|
|
for use_crc in range(2):
|
|
assert entity.is_valid_stream(info.binsha, use_crc)
|
|
# END for each crc mode
|
|
# END for each info
|
|
assert count == len(pack_objs)
|
|
entity.close()
|
|
|
|
def test_pack_64(self):
|
|
# TODO: hex-edit a pack helping us to verify that we can handle 64 byte offsets
|
|
# of course without really needing such a huge pack
|
|
raise SkipTest()
|