<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Security-Policy" content="script-src 'unsafe-inline'">
</head>
<pre>
<script>
if (window.testRunner) {
    testRunner.dumpAsText();
    testRunner.waitUntilDone();
}

var id = setInterval("alert('FAIL')", 0);
if (id != 0)
    document.write('FAIL: Return value for string (should be 0): ' + id);

var id = setInterval(function() {
  clearInterval(id);
  alert('PASS');
  if (window.testRunner)
      testRunner.notifyDone();
}, 0);
if (id == 0)
    document.write('FAIL: Return value for function (should not be 0): ' + id);
</script>
</pre>
</body>
</html>