[Zope-Checkins] CVS: ZODB3/ZODB/tests - RecoveryStorage.py:1.1

[Barry Warsaw]

Update of /cvs-repository/ZODB3/ZODB/tests
In directory cvs.zope.org:/tmp/cvs-serv17254

Added Files:
	RecoveryStorage.py 
Log Message:
Refactorying some tests from testFileStorage, which are really more
generally useful for storages that support the iterator protocol.
Note that copyTransactionsFrom() implicitly tests restore().


=== Added File ZODB3/ZODB/tests/RecoveryStorage.py ===
"""More recovery and iterator tests."""

from ZODB.Transaction import Transaction
from ZODB.tests.IteratorStorage import IteratorDeepCompare


class RecoveryStorage(IteratorDeepCompare):
    # Requires a setUp() that creates a self._dst destination storage
    def checkSimpleRecovery(self):
        oid = self._storage.new_oid()
        revid = self._dostore(oid, data=11)
        revid = self._dostore(oid, revid=revid, data=12)
        revid = self._dostore(oid, revid=revid, data=13)
        self._dst.copyTransactionsFrom(self._storage)
        self.compare(self._storage, self._dst)

    def checkRecoveryAcrossVersions(self):
        oid = self._storage.new_oid()
        revid = self._dostore(oid, data=21)
        revid = self._dostore(oid, revid=revid, data=22)
        revid = self._dostore(oid, revid=revid, data=23, version='one')
        revid = self._dostore(oid, revid=revid, data=34, version='one')
        # Now commit the version
        t = Transaction()
        self._storage.tpc_begin(t)
        self._storage.commitVersion('one', '', t)
        self._storage.tpc_vote(t)
        self._storage.tpc_finish(t)
        self._dst.copyTransactionsFrom(self._storage)
        self.compare(self._storage, self._dst)

    def checkRecoverAbortVersion(self):
        oid = self._storage.new_oid()
        revid = self._dostore(oid, data=21, version="one")
        revid = self._dostore(oid, revid=revid, data=23, version='one')
        revid = self._dostore(oid, revid=revid, data=34, version='one')
        # Now abort the version and the creation
        t = Transaction()
        self._storage.tpc_begin(t)
        oids = self._storage.abortVersion('one', t)
        self._storage.tpc_vote(t)
        self._storage.tpc_finish(t)
        self.assertEqual(oids, [oid])
        self._dst.copyTransactionsFrom(self._storage)
        self.compare(self._storage, self._dst)
        # Also make sure the the last transaction has a data record
        # with None for its data attribute, because we've undone the
        # object.
        for s in self._storage, self._dst:
            iter = s.iterator()
            for trans in iter:
                pass # iterate until we get the last one
            data = trans[0]
            self.assertRaises(IndexError, lambda i, t=trans: t[i], 1)
            self.assertEqual(data.oid, oid)
            self.assertEqual(data.data, None)