title: Capybara: Stubbing No Route Matches
body: <p>I have a capybara test that checks for content on a page. I have an img tag thats src calls for a URL that does not exist. When I run the test I receive:</p>
  
  <pre><code>Failure/Error: raise ActionController::RoutingError, "No route matches [#{env['REQUEST_METHOD']}] #{env['PATH_INFO'].inspect}"
  
    ActionController::RoutingError:
      No route matches [GET] "/avatars/original/missing.png"
  </code></pre>
  
  <p>I honestly don't care about this request. Is there any way for me stub <code>/avatars/original/missing.png</code> on my Capybara test?</p>