chromium/third_party/blink/web_tests/fast/dom/HTMLDocument/named-item.html

<html>
<head>
<script>
if (window.testRunner)
    testRunner.dumpAsText();

function test() {
    var div = document.getElementById("testdiv");
    var img = document.createElement("img");
    img.id = "testimg";
    div.appendChild(img);
    div.innerHTML = "";
    if ("testimg" in document)
        div.innerText = "FAIL: named item was not removed";
    else
        div.innerText = "PASS";
}
</script>
</head>
<body onload="test()">
<p>
Tests that the named item created for an image with an ID is correctly removed.
The test passes, if you see a "PASS" message in the div below.
</p>
<div id="testdiv"></div>
</body>
</html>