rails/rails — pull request #15009 by ereslibre (2014-05-07 15:35:30+00:00)
Title: Add test that fails when fallbacks are set for a missing locale

This demonstrates that when there is missing a view for a locale, and that locale has a fallback on other locale (for which the view exists), it fails; as issue https://github.com/rails/rails/issues/11884 illustrates.