rails/rails — pull request #17020 by Sirupsen (2014-09-23 02:31:05+00:00)
Title: activerecord/connection_pool: honor overidden rack.test in tests

Honoring an overidden `rack.test` allows testing closed connection between multiple requests. This is useful if you're working on database resiliency, to ensure the connection is in the expected state from one request to another on the same worker.