This scripts preloads the Rails environment, so you can run tests using "run 'test/unit/foo_test.rb'"

gistfile1.rb

#!/usr/bin/ruby

ENV["RAILS_ENV"] = "test"
require File.expand_path('../../config/application', __FILE__)

module Kernel
  def run(test_file)
    Process.waitpid(fork do
      $: << File.dirname(__FILE__)+"/../test/"
      load test_file
    end)
  end
end

puts 'Use run "test/path/file.rb"'
require 'irb'
IRB.start

# vim: syntax=ruby