def setUp(self):
self.connection = create_engine('sqlite:///:memory:').connect()
self.metadata = MetaData(self.connection)
self.table = Table('thingy', self.metadata,
Column('thingy_id', Integer, primary_key=True))
self.metadata.create_all()
self.migration_context = MigrationContext.configure(self.connection)
self.op = IdempotentOperations(self.migration_context, self)
self.inspector = Inspector(self.connection)
