data-uri-images-load-asynchronously.html

<!DOCTYPE html>
<html>
<body>
Test for crbug.com/224317: data:uri images should load asynchronously.<br/>
<script>
    if (window.testRunner)
        testRunner.dumpAsText();

    var image = new Image();
    image.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAGQAAABkCAIAAAD/gAIDAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAnklEQVR42u3QMQEAAAgDoGlyo1vBzwciUJlw1ApkyZIlS5YsBbJkyZIlS5YCWbJkyZIlS4EsWbJkyZKlQJYsWbJkyVIgS5YsWbJkKZAlS5YsWbIUyJIlS5YsWQpkyZIlS5YsBbJkyZIlS5YCWbJkyZIlS4EsWbJkyZKlQJYsWbJkyVIgS5YsWbJkKZAlS5YsWbIUyJIlS5YsWQpkyfq2MosBSIeKONMAAAAASUVORK5CYII=";

    if (image.width == 100 && image.height == 100)
        document.write("FAIL");
    else
        document.write("PASS");
</script>
</body>
</html>

chromium/third_party/blink/web_tests/loader/data-uri-images-load-asynchronously.html