document-set-title-single-DOMSubtreeModified.html

<!DOCTYPE html>
<title>document title and DOMSubtreeModified</title>
<script src="../../../../resources/js-test.js"></script>
<body>
<script>
    description("On setting document.title, only one DOMSubtreeModified event is created.");

    var titleElement = document.documentElement.firstChild.firstChild;
    var i=0;
    titleElement.addEventListener('DOMSubtreeModified', function() { i++; });
    document.title = "new";
    shouldBeEqualToString("document.title", "new");
    shouldBeTrue("i == 1");
</script>
</body>

chromium/third_party/blink/web_tests/dom/mutation-event-tests/fast/dom/document-set-title-single-DOMSubtreeModified.html