def createTestDB(name='main', base=None):
"""This create a test storage and register it.
"""
storage = DemoStorage(name, base=base)
db = DB(storage, database_name=name)
db.setActivityMonitor(ZODB.ActivityMonitor.ActivityMonitor())
# DB are registered as utilities
component.provideUtility(db, ZODB.interfaces.IDatabase, name)
# And we send a event that our DB is available
notify(zope.processlifetime.DatabaseOpened(db))
return db
