chromium/third_party/blink/web_tests/accessibility/input-image-alt.html

<html>
<html>
<head>
<script src="../resources/js-test.js"></script>
</head>
<body id="body">

    <input type="image" alt="Submit" src="resources/cake.png" width=100 height=100 id="image1">
    
    <p id="description"></p>
    <div id="console"></div>
     
    <script>
        if (window.accessibilityController) {
            description("This test makes sure that an input image returns its alt tag as the description");

            var image1 = document.getElementById("image1").focus();
            var img = accessibilityController.focusedElement;

            shouldBe("img.name", "'Submit'");
        }
    </script>


</body> 
</html>