<!doctype html>
<style>
#test {
  height: 0px;
  -webkit-transition: height 1000s;
  background: green;
}
</style>
<div id="test">Testing...</div>
<script>
if (window.testRunner) {
  testRunner.dumpAsText();
  testRunner.waitUntilDone();
}

function finish(result) {
  document.body.textContent = result;
  if (window.testRunner) {
    testRunner.notifyDone();
  }
}

onload = function() {
  if (test.clientHeight != 0) {
    return finish('FAIL -- expected initial height of 0px');
  }

  test.style.height = 'auto';
  if (test.clientHeight == 0) {
    return finish('FAIL -- transtion should not apply from 0px to auto');
  }

  return finish('PASS');
};
</script>