/* eslint-disable no-var */
var iframes = document.getElementsByTagName('iframe');
for (var i = 0, len = iframes.length; i < len; ++i) {
  var f = iframes[i];
  (function (f) {
    f.addEventListener('load', function () {
      f.contentWindow.QUnit.done = function () {
        f.style.height = (f.contentDocument.body.scrollHeight + 20) + 'px';
      };
    });
  })(f);
}