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# 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
from gitdb.test.db.lib import (
TestDBBase,
with_rw_directory,
)
from gitdb.db import ReferenceDB
from gitdb.util import (
NULL_BIN_SHA,
hex_to_bin
)
import os
class TestReferenceDB(TestDBBase):
def make_alt_file(self, alt_path, alt_list):
"""Create an alternates file which contains the given alternates.
The list can be empty"""
with open(alt_path, "wb") as alt_file:
for alt in alt_list:
alt_file.write(alt.encode("utf-8") + b"\n")
@with_rw_directory
def test_writing(self, path):
alt_path = os.path.join(path, 'alternates')
rdb = ReferenceDB(alt_path)
assert len(rdb.databases()) == 0
assert rdb.size() == 0
assert len(list(rdb.sha_iter())) == 0
# try empty, non-existing
assert not rdb.has_object(NULL_BIN_SHA)
# setup alternate file
# add two, one is invalid
own_repo_path = os.path.join(self.gitrepopath, 'objects') # use own repo
self.make_alt_file(alt_path, [own_repo_path, "invalid/path"])
rdb.update_cache()
assert len(rdb.databases()) == 1
# we should now find a default revision of ours
gitdb_sha = next(rdb.sha_iter())
assert rdb.has_object(gitdb_sha)
# remove valid
self.make_alt_file(alt_path, ["just/one/invalid/path"])
rdb.update_cache()
assert len(rdb.databases()) == 0
# add valid
self.make_alt_file(alt_path, [own_repo_path])
rdb.update_cache()
assert len(rdb.databases()) == 1
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