htmlcollection-conversion-throws-exception.html

<html>
<head>
<script>
  function test() {
    alert(
    'This test verifies that exception thrown while converting an object to string '
    + 'are correctly propagated and do not crash the browser.');

    if (window.testRunner) {
      testRunner.dumpAsText();
    }

    var throwing = { toString: function() { throw 'EXCEPTION'; } };
    try {
      document.images.item(throwing);
      alert('FAIL: document.images.item(throwing) should have thrown an exception!');
    } catch (e) {
      alert('OK: ' + e);
    }
    try {
      document.images[throwing];
      alert('FAIL: document.images[throwing] should have thrown an exception!');
    } catch (e) {
      alert('OK: ' + e);
    }
  }
</script>
</head>
<body onload='test()'>
</body>
</html>

chromium/third_party/blink/web_tests/fast/dom/htmlcollection-conversion-throws-exception.html