Testing a concern / module that uses ActiveRecord

Question

SCENARIO I have extracted a concern called Taggable. It\'s a module that allows any model to support tagging. I have included

Answer 1

I went with using ActiveRecord Tableless rather than Temping gem, which seems to be a little out of date at the moment.

I set up my test up exactly the same as Stuart M has in his answer but included the has_no_table helper method and columns required in my DummyClass.

class DummyClass < ActiveRecord::Base
  # Use ActiveRecord tableless
  has_no_table
  # Add table columns
  column :name, :string
  # Add normal ActiveRecord validations etc
  validates :name, :presence => true
end   

This worked for what I needed to test, which was a module that extended ActiveRecord::Base with a few additional methods, but I haven't tried it with any has_many associations so it still might not help with what you wanted to test.