LayoutTests/editing/pasteboard/can-read-in-copy-and-cut-events.html

<!DOCTYPE html>
<html>
<head>
<script>
function log(text) {
    var log = document.getElementById('log');
    log.appendChild(document.createTextNode(text));
    log.appendChild(document.createElement('br'));
}

function copyTest(e) {
    e.clipboardData.setData('text/plain', 'copy test');
    if (event.clipboardData.types.indexOf('text/plain') < 0 ||
        event.clipboardData.getData('text/plain') != 'copy test')
        log('copy: FAILED');
    else
        log('copy: SUCCESS');
}

function cutTest(e) {
    e.clipboardData.setData('text/plain', 'cut test');
    if (event.clipboardData.types.indexOf('text/plain') < 0 ||
        event.clipboardData.getData('text/plain') != 'cut test')
        log('cut: FAILED');
    else
        log('cut: SUCCESS');
}

function runTest() {
    if (!window.testRunner)
        return;
    testRunner.dumpAsText();
    document.execCommand('copy');
    document.execCommand('cut');
}
</script>
</head>
<body onload="runTest()" oncopy="copyTest(event)" oncut="cutTest(event)">
<p>Simple test that data set during a copy/cut event can be read back. To run
the test manually, simply select any text and initiate a copy/cut operation.
<div id="log"></div>
</html>