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# Copyright 2010-2025 The pygit2 contributors
#
# This file is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2,
# as published by the Free Software Foundation.
#
# In addition to the permissions in the GNU General Public License,
# the authors give you unlimited permission to link the compiled
# version of this file into combinations with other programs,
# and to distribute those combinations without any restriction
# coming from the use of this file. (The General Public License
# restrictions do apply in other respects; for example, they cover
# modification of the file, and distribution when not linked into
# a combined executable.)
#
# This file 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; see the file COPYING. If not, write to
# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
# Boston, MA 02110-1301, USA.
"""Tests for Odb backends."""
# Standard Library
import binascii
from pathlib import Path
import pytest
# pygit2
import pygit2
from pygit2.enums import ObjectType
from . import utils
BLOB_HEX = 'af431f20fc541ed6d5afede3e2dc7160f6f01f16'
BLOB_RAW = binascii.unhexlify(BLOB_HEX.encode('ascii'))
BLOB_OID = pygit2.Oid(raw=BLOB_RAW)
@pytest.fixture
def odb(barerepo):
yield barerepo.odb, Path(barerepo.path) / 'objects'
def test_pack(odb):
odb, path = odb
pack = pygit2.OdbBackendPack(path)
assert len(list(pack)) > 0
for obj in pack:
assert obj in odb
def test_loose(odb):
odb, path = odb
pack = pygit2.OdbBackendLoose(path, 5, False)
assert len(list(pack)) > 0
for obj in pack:
assert obj in odb
class ProxyBackend(pygit2.OdbBackend):
def __init__(self, source):
super().__init__()
self.source = source
def read_cb(self, oid):
return self.source.read(oid)
def read_prefix_cb(self, oid):
return self.source.read_prefix(oid)
def read_header_cb(self, oid):
typ, data = self.source.read(oid)
return typ, len(data)
def exists_cb(self, oid):
return self.source.exists(oid)
def exists_prefix_cb(self, oid):
return self.source.exists_prefix(oid)
def refresh_cb(self):
self.source.refresh()
def __iter__(self):
return iter(self.source)
#
# Test a custom object backend alone (without adding it to an ODB)
# This doesn't make much sense, but it's possible.
#
@pytest.fixture
def proxy(barerepo):
path = Path(barerepo.path) / 'objects'
yield ProxyBackend(pygit2.OdbBackendPack(path))
def test_iterable(proxy):
assert BLOB_HEX in [o for o in proxy]
def test_read(proxy):
with pytest.raises(TypeError):
proxy.read(123)
utils.assertRaisesWithArg(KeyError, '1' * 40, proxy.read, '1' * 40)
ab = proxy.read(BLOB_OID)
a = proxy.read(BLOB_HEX)
assert ab == a
assert (ObjectType.BLOB, b'a contents\n') == a
def test_read_prefix(proxy):
a_hex_prefix = BLOB_HEX[:4]
a3 = proxy.read_prefix(a_hex_prefix)
assert (ObjectType.BLOB, b'a contents\n', BLOB_OID) == a3
def test_exists(proxy):
with pytest.raises(TypeError):
proxy.exists(123)
assert not proxy.exists('1' * 40)
assert proxy.exists(BLOB_HEX)
def test_exists_prefix(proxy):
a_hex_prefix = BLOB_HEX[:4]
assert BLOB_HEX == proxy.exists_prefix(a_hex_prefix)
#
# Test a custom object backend, through a Repository.
#
@pytest.fixture
def repo(barerepo):
odb = pygit2.Odb()
path = Path(barerepo.path) / 'objects'
backend = pygit2.OdbBackendPack(path)
backend = ProxyBackend(backend)
odb.add_backend(backend, 1)
repo = pygit2.Repository()
repo.set_odb(odb)
yield repo
def test_repo_read(repo):
with pytest.raises(TypeError):
repo[123]
utils.assertRaisesWithArg(KeyError, '1' * 40, repo.__getitem__, '1' * 40)
ab = repo[BLOB_OID]
a = repo[BLOB_HEX]
assert ab == a
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