File: onenter.html

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<!doctype html>
<title>TextTrackCue.onenter</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<div id=log></div>
<script>
setup(function(){
    window.c1 = new VTTCue(0, 1, 'text1');
    window.ev = new Event('enter');
    window.ran = false;
    window.cb = function() { ran = true; };
});
test(function(){
    assert_equals(c1.onenter, null, 'initial value');
    c1.onenter = undefined;
    assert_equals(c1.onenter, null, 'assigning undefined');
    c1.onenter = cb;
    assert_equals(c1.onenter, cb, 'assigning onenter');
    c1.dispatchEvent(ev);
    assert_true(ran, 'dispatching event');
    c1.onenter = null;
    assert_equals(c1.onenter, null, 'assigning null');
    ran = false;
    c1.dispatchEvent(ev);
    assert_false(ran, 'dispatching event after nulling onenter');
});
test(function(){
    c1.addEventListener('enter', cb, false);
    c1.dispatchEvent(ev);
    assert_true(ran);
    c1.removeEventListener('enter', cb, false);
    ran = false;
    c1.dispatchEvent(ev);
    assert_false(ran);
}, 'TextTrackCue.addEventListener/removeEventListener');
</script>