input-type-range-value-change-event.html

<!DOCTYPE HTML>
<script src="../resources/testharness.js"></script>
<script src="../resources/testharnessreport.js"></script>

<input id="range" type="range" min=0 max=10 value=5>

<script>
async_test(function(t)
{
    var target = document.getElementById("range");
    target.addEventListener("change", function() {
        assert_equals(target.value, "6");
        target.style.display = "none";
        t.done();
    }, false);

    var axTarget = accessibilityController.accessibleElementById("range");
    axTarget.setValue("6");
}, "changing the value of a range control fires a change event on it.");
</script>

chromium/third_party/blink/web_tests/accessibility/input-type-range-value-change-event.html