chromium/third_party/blink/web_tests/fast/forms/text/input-changing-value.html

<html>
<head>
<script>

function test()
{
    document.getElementById('sp').focus();
    
    if (window.testRunner) {
        testRunner.dumpAsText();
    }
    
    document.execCommand("InsertText", false, 'Test');
    
    if (document.getElementById('sp').value == "Test") {
        document.getElementById('result').innerHTML = "Passed";
    }
}

</script>
</head>
<body onload="test()">
This test changes the value of the text field by simulating typing, and then gets the value.
<br><br>
<input type="text" id="sp" style="-khtml-appearance:textfield"></input>
<div id="result">
Failed
</div>
</body>
</html>