my way of half assing DI with rails

fake_model.rb

class FakeModel < ActiveRecord::Base
  
  def save_and_do_those_other_things
    save &&
    that_other_model_class.create(:some_attr => self.my_attr_todo_with_something) &&
    some_api_class.new.do_that_thing
  end
  
  def that_other_model_class
    ThatOtherModel
  end
  
  def some_api_class
    SomeApiGem::Client
  end
end

fake_model_spec.rb

require 'fast_model_spec_helper'
require 'fake_model'

describe FakeModel do
  
  before do
    subject.stub(:that_other_model_class => mock)
    subject.stub(:some_api_class => mock.as_null_object)
  end
  
  it "should to that thing with its collaborators" do
    subject.my_attr_todo_with_something = "testinglol"
    
    subject.should_receive(:create).with(subject.my_attr_todo_with_something)
    subject.should_receive(:new).should_receive(:do_that_thing)
    
    subject.save
  end
  
end