{ style: 'transition: height .01s linear; ' +
                                 'height: 1px' });
  getComputedStyle(div).height;
  div.style.height = '100px';

  div.addEventListener('transitionrun', t.step_func_done(() => {
    assert_false(
      loadEventFired,
      'load event should not have fired yet'
    );
    document.getElementById('cat').src = '';
  }));
});
</script>

<img src="support/cat.png?pipe=trickle(d1)" id="cat">
</body>
</html>
