LayoutTests/accessibility/mac/accesskey.html

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">
<html>
<head>
<script src="../../resources/accessibility-helper.js"></script>
<script src="../../resources/js-test.js"></script>
</head>
<body>

<a href="http://www.webkit.org" id="link" accesskey="w">webkit</a><br>
<a href="http://www.webkit.org" id="link-display-contents" accesskey="z" style="display:contents">webkit</a><br>
<input type="text" id="input" accesskey="q">

<script>
var output = "This test makes sure that elements return their accesskeys.\n\n";

if (window.accessibilityController) {
    window.jsTestIsAsync = true;

    var link = accessibilityController.accessibleElementById("link");
    output += expect("link.allAttributes().indexOf('AXAccessKey: w') !== -1", "true");

    var linkDisplayContents = accessibilityController.accessibleElementById("link-display-contents");
    output += expect("linkDisplayContents.allAttributes().indexOf('AXAccessKey: z') !== -1", "true");

    var input = accessibilityController.accessibleElementById("input");
    output += expect("input.allAttributes().indexOf('AXAccessKey: q') !== -1", "true");

    output += "\nUpdating #link accesskey to 'u'.\n";
    document.getElementById("link").setAttribute("accesskey", "u");
    setTimeout(async function() {
        await waitFor(() => link.allAttributes().indexOf("AXAccessKey: u") !== -1);
        output += "PASS: accesskey AX attribute was updated correctly.\n";

        debug(output);
        finishJSTest();
    }, 0);
}
</script>
</body>
</html>