Backup, Synchronization, Versioning.
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# bsv - Backup, Synchronization, Versioning
# Copyright (C) 2023 Simon Boyé
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
from __future__ import annotations
from hashlib import sha256
from pathlib import Path
from tempfile import TemporaryDirectory
import pytest
from bsv.simple_cas.cas import Digest, SimpleCas
@pytest.fixture
def tmp_dir():
with TemporaryDirectory(prefix="simple_cas_") as tmp_dir:
yield Path(tmp_dir)
@pytest.fixture
def cas(tmp_dir):
cas = SimpleCas(
tmp_dir,
sha256, # type: ignore
)
with cas:
yield cas
def test_simple_cas(tmp_dir: Path):
cas = SimpleCas(
tmp_dir,
sha256, # type: ignore
)
with cas:
assert len(cas) == 0
data = b"Hello World!"
digest = cas.write(b"blob", data)
assert len(cas) == 1
assert digest in cas
obj = cas.read(digest)
assert obj is not None
assert obj.object_type == b"blob"
assert obj.data == data
cas = SimpleCas(
tmp_dir,
sha256, # type: ignore
)
with cas:
assert len(cas) == 1
assert digest in cas
obj = cas.read(digest)
assert obj is not None
assert obj.object_type == b"blob"
assert obj.data == data
digest2 = cas.write(b"blob", data)
assert digest2 == digest
assert len(cas) == 1
def test_refs(cas: SimpleCas):
digest = Digest(bytes([42] * cas._digest_size))
assert cas.get_ref("foo/bar") is None
cas.set_ref("foo/bar", digest)
assert cas.get_ref("foo/bar") == digest
assert cas.get_ref("foo") is None