title: Testing multiple concurrent browser sessions
body: <p>I'm developing a card-game in Ruby on Rails, and trying to work out how best to test it. </p>
  
  <p>When a player joins a game, their Player object is stored in the session. Obviously, in order for the game to work, I need more than one Player in a game at once. Since sessions are the same for different tabs in one browser, I'm currently testing a 2-player game by having the app open in FireFox and Internet Explorer at the same time.</p>
  
  <p>Before I go off and download Chrome in order to test a third player... is there an easier way of doing this?</p>
  
  <p><strong>Edit:</strong> To clarify, I'm not yet at the stage where I want to run automated tests to see if it breaks. I'm at the stage where I want to be able to hack the back-end db, then refresh the page and see how it looks now, or click a button to see the (usually) failure response, or whether the behaviour is looking right.</p>