chromium/third_party/blink/web_tests/editing/pasteboard/19644-1.html

<head>
<script>
function runTest() {
    document.body.focus();
    document.execCommand("SelectAll");
    if (!testRunner)
        return;
    testRunner.dumpAsText();
    document.execCommand("Cut");
    document.execCommand("Paste");
    document.body.innerText = document.body.innerHTML;
    
}
</script>
</head>
<body onLoad="runTest();" contentEditable="true" style="padding: 5px; margin: 5px;">This tests for a bug where we would wrap copied markup in a div to hold a fully selected body's attributes and style even if there was nothing special about the body that warranted doing so.  After you cut/paste, the text should only have 5 pixels of padding.</body>