rails/rails — pull request #4013 by alexeymuranov (2011-12-17 14:57:39+00:00)
Title: A version of #3844 for 3-1-stable

This is a rebased version of my pull request #3844 which should apply cleanly to 3-1-stable.

This fixes the issue #2572 with `set_fixture_class` and allows to use `set_fixture_class` with "namespaced" fixtures:

```ruby
set_fixture_class :"admin/users" => User, "admin/known_ips" => Admin::KnownIP
```