Add meta refresh support to SimpleTest

From work with testing.drupal.org and looking at some of the hax related to simpletest.test I think we need meta refresh support in the SimpleTest browser. In general this is needed to run any page using the batch API so it would most likely come in to more uses in the future.

The question is how to implement it.

  function drupalGet($path, $options = array(), $ = 10) {
    $options['absolute'] = TRUE;

    // We re-using a CURL connection here.  If that connection still has certain
    // options set, it might change the GET into a POST.  Make sure we clear out
    // previous options.
    $out = $this->curlExec(array(CURLOPT_HTTPGET => TRUE, CURLOPT_URL => url($path, $options), CURLOPT_HEADER => FALSE, CURLOPT_NOBODY => FALSE));
    $this->refreshVariables(); // Ensure that any changes to variables in the other thread are picked up.
    
    return $out;
  }

should I add something like:

if ($this->parse()) {
      $refresh = $this->xpath('//meta[@http-equiv="Refresh"]');
      if ($refresh) {
        // .... call drupalGet again or something?
      }
    }

and if so should I call drupalGet again? or somehow allow for support of meta refresh with delay longer then 0? or even allow test to see the page in the middle?