<!DOCTYPE html>
<html>
<body>
<script src="../../resources/js-test-pre.js"></script>
<script>
description("Tests that the beforeunload alert is shown when the user interacted with the page. You should see a 'CONFIRM NAVIGATION' message at the top.");
jsTestIsAsync = true;

onload = function() {
    const testFrame = document.getElementById("testFrame");
    testFrame.contentWindow.onbeforeunload = function(e) {
        return "PASS: a beforeunload alert was shown.";
    };
    // Simulate a user interaction.
    const testInput = document.getElementById("testInput");
    testInput.focus();
    if (window.eventSender)
        eventSender.keyDown("a");
    setTimeout(function() {
        testFrame.onload = finishJSTest;
        testFrame.src = "about:blank";
    }, 0);
};
</script>
<iframe id="testFrame" src="resources/onclick.html"></iframe>
<input id="testInput" type="text"></input>
<script src="../../resources/js-test-post.js"></script>
</body>
</html>