Replaces spec_helper.rb when testing ActiveRecord objects.

active_record_helper.rb

unless defined?(ActiveRecord)
  require "active_record"
  require "shoulda-matchers"

  dbconfig = YAML::load(File.open("config/database.yml"))
  ActiveRecord::Base.establish_connection( dbconfig["test"] )

  RSpec.configure do |config|
    config.around do |example|
      ActiveRecord::Base.transaction do
        example.run
        raise ActiveRecord::Rollback
      end
    end
  end
end