Shopify/identity_cache — pull request #194 by dylanahsmith (2014-12-24 10:26:55+00:00)
Title: Fix a test that expected expiry without changes to saved record.

@arthurnn for review

In rails 4.2 the parent record isn't touched through the `touch: true` option on the belongs_to association if there were no changes to the record being saved, since no update statement is sent to the database.