juju/testing — pull request #34 by davecheney (2014-09-10 06:26:31+00:00)
Title: testing/checkers: fix panic in IsTrue

Fixes a panic caused by not handling an empty interface value, the zero value for interface{} properly.

This came up with a test case that tried

c.Assert(m["somekey", jc.IsTrue)

Which would panic if "somekey" was missing from the map.