"""Check loadSerial() on storages that support historical revisions."""
from ZODB.tests.MinPO import MinPO
from ZODB.tests.StorageTestBase import zodb_unpickle,zodb_pickle
ZERO = '\0'*8
class RevisionStorage:
def checkLoadSerial(self):
oid = self._storage.new_oid()
revid = ZERO
revisions = {}
for i in range(31, 38):
revid = self._dostore(oid, revid=revid, data=MinPO(i))
revisions[revid] = MinPO(i)
# Now make sure all the revisions have the correct value
for revid, value in revisions.items():
data = self._storage.loadSerial(oid, revid)
self.assertEqual(zodb_unpickle(data), value)
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