<!DOCTYPE html>
<html>
<head>
<script src="../../resources/js-test.js"></script>
<style>
    #target {
        display: flex;
        display: -webkit-flex;
    }
</style>
<script>
    var targetDiv;
    function test()
    {
        targetDiv = document.getElementById('target');
        targetDiv.focus();

        // Move cursor to the end of line.
        getSelection().modify('move', 'forward', 'lineboundary');

        document.execCommand("insertText", false, "EST");
        shouldBeEqualToString("targetDiv.innerText", "TEST");

        document.execCommand("delete");
        document.execCommand("delete");
        document.execCommand("delete");
        document.execCommand("delete");
        document.execCommand("delete"); // Remove '\n'
        shouldBeEmptyString("targetDiv.innerText");

        document.execCommand("insertText", false, "TEST");
        shouldBeEqualToString("targetDiv.innerText", "TEST");
    }
</script>
</head>
<body onload="test()">
<div id="target" contentEditable>T</div>
</body>
</html>