Test code in an nsrunloop with bacon

bacon_runloop.rb

class Bacon::Context
  def runloop(duration=0.6)
    Thread.new {
      runloop = NSRunLoop.currentRunLoop
      yield
      runloop.runUntilDate(NSDate.dateWithTimeIntervalSinceNow(duration))
      }.join
  end
end

describe 'runloop things' do
   it 'does something which depends on a runloop' do
    runloop_wanting_instance = MyRunloopSchedualingObject.new
  
    runloop do
      runloop_wanting_instance.start
    end  
    runloop_wanting_instance.something.should.equal 1
  end
end