rails/rails — pull request #14852 by matthewd (2014-04-23 19:20:35+00:00)
Title: Fix railties asset tests: precompile the image we're referencing

You can't compile a file that references a non-compiled asset's path.

.. unless you turn off asset runtime errors.

Outside of a test case like this, `config.assets.precompile` would normally retain its default entry, which precompiles all images (and other non-JS/CSS files) that are in `app/assets`.