thoughtbot/paperclip — pull request #1099 by knapo (2012-12-02 16:25:24+00:00)
Title: Add FakeModel#valid?

https://github.com/thoughtbot/paperclip/commit/1544a7b2f054b53a52aa53a12f471d1a1bb36ca6 broke tests using `FakeModel` which does not respod to `valid?`. This commit extends `FakeModel` with that method and fixes tests.