# Constants defined in initializer not found when running gems:install in test **URL:** \ **Category:** Rails\ **Created:** [April 23, 2009, 9:39pm UTC](https://www.ruby-forum.com/t/constants-defined-in-initializer-not-found-when-running-gems-install-in-test/166323 "2009-04-23T21:39:01Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![tobi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/b9e5f3/32.png) [@tobi](https://www.ruby-forum.com/u/tobi)\ **Post date:** [April 23, 2009, 9:39pm UTC](https://www.ruby-forum.com/t/constants-defined-in-initializer-not-found-when-running-gems-install-in-test/166323/1 "2009-04-23T21:39:01Z")
Dear all, I am setting some constants in an initializer, which are used in validations in my models. When I run RAILS\_ENV=test rake gems:install I get missing constant errors for these, but not when I run RAILS\_ENV=development rake gems:install It only happens for the gems:install task in test. Everything else (e.g. rake test) works as expected. What could be the problem? Thanks for your help Tobi ---
**Author:** ![tobi](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/t/b9e5f3/32.png) [@tobi](https://www.ruby-forum.com/u/tobi)\ **Post date:** [April 25, 2009, 1:42am UTC](https://www.ruby-forum.com/t/constants-defined-in-initializer-not-found-when-running-gems-install-in-test/166323/2 "2009-04-25T01:42:03Z")
The problem you ran into was the same one as this thread: [http://groups.google.com/group/rubyonrails-talk/browse\_thread/thread/56c560bd46347d12](http://groups.google.com/group/rubyonrails-talk/browse_thread/thread/56c560bd46347d12) and both are caused by load\_application\_classes trying to load all your models at startup. That routine does nothing when config.cache\_classes is false (the default in development mode, but not in test). As a quick workaround, try setting config.cache\_classes to false in environments/test.rb to get the gems installed. –Matt J.