alto

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2009 Aslak Hellesøy
 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

alto

In response to all the responses to:

http://twitter.com/rtomayko/status/1155906157

You should never do this in a source file included with your library,
app, or tests:

    require 'rubygems'

The system I use to manage my $LOAD_PATH is not your library/app/tests

alto

# your_object.rb
class YourObject < ActiveRecord::Base
  def your_method
    self.your_association << TestObject.new
  end
end

# your_object_spec.rb
it "should test your_method" do
  lambda { your_object.your_method }.should change(your_object.your_association, :size)   # => no change, test fails....