internal-properties-should-not-be-exposed.html

<!DOCTYPE html>
<body>
<script src="../resources/js-test.js"></script>
<script>
debug("This test checks that -internal-* properties are not exposed to JS.")
debug("");
debug("");

// This contains the properties along with an accepted value to ensure that we can't
// set it from JavaScript.
var internalProperties = { "-internal-marquee-direction": "alternate" };
for (var property in internalProperties) {
    debug("Testing " + property);
    element = document.createElement("foo");
    document.body.appendChild(element);
    shouldBeEqualToString("window.getComputedStyle(element).getPropertyValue(property)", "");
    shouldBeUndefined("element.style[property]");

    debug("Value after setting " + property + " to " + internalProperties[property]);
    element.style.setProperty(property, internalProperties[property]);
    shouldBeUndefined("element.style[property]")

    document.body.removeChild(element);
    debug("");
}
</script>
</body>

chromium/third_party/blink/web_tests/webexposed/internal-properties-should-not-be-exposed.html