[Zope3-checkins] CVS: Zope3/src/zodb/tests - test_invalidation.py:1.1

[Jeremy Hylton]

Update of /cvs-repository/Zope3/src/zodb/tests
In directory cvs.zope.org:/tmp/cvs-serv7413/zodb/tests

Added Files:
	test_invalidation.py 
Log Message:
Add a trivial test of invalidation.


=== Added File Zope3/src/zodb/tests/test_invalidation.py ===
##############################################################################
#
# Copyright (c) 2001, 2002 Zope Corporation and Contributors.
# All Rights Reserved.
#
# This software is subject to the provisions of the Zope Public License,
# Version 2.0 (ZPL).  A copy of the ZPL should accompany this distribution.
# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
# FOR A PARTICULAR PURPOSE.
#
##############################################################################
"""Test that invalidations propagate across connections."""

import unittest

from zodb.db import DB
from zodb.storage.mapping import MappingStorage
from zodb.storage.tests.minpo import MinPO

from transaction import get_transaction

class InvalidationTests(unittest.TestCase):

    num_connections = 3

    def setUp(self):
        self.storage = MappingStorage()
        self.db = DB(self.storage)
        self.connections = [self.db.open() for i in range(4)]

    def tearDown(self):
        self.db.close()

    def testSimpleInvalidation(self):
        root = self.connections[0].root()
        obj = root[1] = MinPO(1)
        get_transaction().commit()
        for cn in self.connections[1:]:
            cn.sync()
            root = cn.root()
            self.assertEqual(root[1].value, 1)
        obj.value = 2
        get_transaction().commit()
        for cn in self.connections[1:]:
            cn.sync()
            root = cn.root()
            self.assertEqual(root[1].value, 2)
        

def test_suite():
    return unittest.makeSuite(InvalidationTests)