rails/rails — pull request #7515 by senny (2012-09-03 18:42:59+00:00)
Title: custom inheritance_column test refactoring

I did the following things:
* previously the tests with and without a custom `inheritance_column` used the same models. Since the model then has both fields this can lead to false positives.

* All tests with a custom inheritance_column use the `Vegtable` model. The field ruby_type on the Company models is no longer needed