chromium/third_party/blink/web_tests/editing/pasteboard/paste-without-nesting.html

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<script src="../../resources/js-test.js"></script>
</head>
<body>
<p id="description">This test checks that copy a selection and paste over the same selection does not create nested divs.</p>
<div id="console"></div>
<script>

var sel = document.getSelection();
var root = document.createElement("root");
document.body.appendChild(root);


function createEditable(tagName, markup) {
    var node = document.createElement(tagName);
    node.contentEditable = true;
    node.innerHTML = markup;
    return node;
}

function testCopyPaste(tagName, originalMarkup, expected) {
    var node = createEditable(tagName, originalMarkup);
    root.appendChild(node);

    node.focus();
    document.execCommand("SelectAll", false);
    document.execCommand("Copy", false);
    document.execCommand("Paste", false);

    confirmedMarkup = node.innerHTML;

    shouldBe("confirmedMarkup", "'" + expected + "'");
}

testCopyPaste("div", "Hello", "Hello");
testCopyPaste("div", "Hello<br>world", "Hello<br>world");
testCopyPaste("div", "<div>Hello</div><div>world</div>", "<div>Hello</div><div>world</div>");
testCopyPaste("div", "<div><div>Hello</div><div>world</div></div>", "<div>Hello</div><div>world</div>");
testCopyPaste("div", "<div><b><i>Hello</i></b></div><div><b><i>world</i></b></div>", "<div><b><i>Hello</i></b></div><div><b><i>world</i></b></div>");
testCopyPaste("div", "<div style=\"text-align: center;\"><div><font color=\"#ff0000\"><b><i>hello</i></b></font></div><div><font color=\"#ff0000\"><b><i>world</i></b></font></div></div>", "<div style=\"text-align: center;\"><div><font color=\"#ff0000\"><b><i>hello</i></b></font></div><div><font color=\"#ff0000\"><b><i>world</i></b></font></div></div>");

root.style.display = "none";

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