dom/events/CustomEvent.html

<!doctype html>
<title>CustomEvent</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<script>
test(function() {
  var type = "foo";

  var target = document.createElement("div");
  target.addEventListener(type, this.step_func(function(evt) {
    assert_equals(evt.type, type);
  }), true);

  var fooEvent = document.createEvent("CustomEvent");
  fooEvent.initEvent(type, true, true);
  target.dispatchEvent(fooEvent);
}, "CustomEvent dispatching.");

test(function() {
    var e = document.createEvent("CustomEvent");
    assert_throws_js(TypeError, function() {
        e.initCustomEvent();
    });
}, "First parameter to initCustomEvent should be mandatory.");

test(function() {
    var e = document.createEvent("CustomEvent");
    e.initCustomEvent("foo");
    assert_equals(e.type, "foo", "type");
    assert_false(e.bubbles, "bubbles");
    assert_false(e.cancelable, "cancelable");
    assert_equals(e.detail, null, "detail");
}, "initCustomEvent's default parameter values.");
</script>