emberjs/ember.js — pull request #3866 by tricknotes (2013-12-05 18:33:09+00:00)
Title: Inspect `content` in assertion message of '#each' helper

I improved assetion message to inspect `content` of `#each` helper.

before:
> You passed \[object Object\] (wrapped in (generated ontology.index controller))

after:
> You passed '{}' (wrapped in (generated ontology.index controller))

"[object Object]" should be inspected for kindness of debugging.