chromium/third_party/blink/web_tests/dom/domparsing/domparser-assign-variable.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
        "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script src="../../resources/testharness.js"></script>
<script src="../../resources/testharnessreport.js"></script>
<script>
test(() => {
    var parser = new DOMParser();
    parser.test = "test";
}, "This creates a DOMParser object and tries to assign it to a variable. If the test is successful, it should not crash");

</script>
</head>
<body>
</body>
</html>