[rubyworks/facets] e6b42a: Add test for instance_extract. [test]

[trans]

Branch: refs/heads/master
Home: https://github.com/rubyworks/facets
Commit: e6b42a231d290c0d744a883f95ba51d8b9735a8a
https://github.com/rubyworks/facets/commit/e6b42a231d290c0d744a883f95ba51d8b9735a8a
Author: trans <tran...@gmail.com>
Date: 2014-05-24 (Sat, 24 May 2014)

Changed paths:
A test/core/kernel/test_instance_extract.rb

Log Message:
-----------
Add test for instance_extract. [test]