<!DOCTYPE html>
<html>
<head>
<title>Custom Elements: CEReactions on Element interface</title>
<meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
<meta name="assert" content="commitStyles of Animation interface must have CEReactions">
<meta name="help" content="https://dom.spec.whatwg.org/#element">
<meta name="help" content="https://w3c.github.io/DOM-Parsing/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../resources/custom-elements-helpers.js"></script>
<script src="./resources/reactions.js"></script>
</head>
<body>
<div id="log"></div>
<script>

test(function () {
    const element = define_new_custom_element(['style']);
    const instance = document.createElement(element.name);
    document.body.appendChild(instance);
    assert_array_equals(element.takeLog().types(), ['constructed', 'connected']);

    const animation = instance.animate([{'borderColor': 'rgb(0, 0, 255)'}]);
    animation.commitStyles();

    const logEntries = element.takeLog();
    assert_array_equals(logEntries.types(), ['attributeChanged']);
    assert_equals(logEntries.last().name, 'style');
    assert_equals(logEntries.last().namespace, null);
}, 'Animation.animate must enqueue an attributeChanged reaction when it adds the observed style attribute');

test(function () {
    const element = define_new_custom_element(['style']);
    const instance = document.createElement(element.name);
    document.body.appendChild(instance);

    let animation = instance.animate([{'borderColor': 'rgb(0, 0, 255)'}]);
    animation.commitStyles();

    assert_array_equals(element.takeLog().types(), ['constructed', 'connected', 'attributeChanged']);

    animation = instance.animate([{'borderColor': 'rgb(0, 255, 0)'}]);
    animation.commitStyles();

    const logEntries = element.takeLog();
    assert_array_equals(logEntries.types(), ['attributeChanged']);
    assert_equals(logEntries.last().name, 'style');
    assert_equals(logEntries.last().namespace, null);
}, 'Animation.animate must enqueue an attributeChanged reaction when it mutates the observed style attribute');

test(function () {
    const element = define_new_custom_element([]);
    const instance = document.createElement(element.name);
    document.body.appendChild(instance);
    assert_array_equals(element.takeLog().types(), ['constructed', 'connected']);

    const animation = instance.animate([{'borderColor': 'rgb(0, 0, 255)'}]);
    animation.commitStyles();

    assert_array_equals(element.takeLog().types(), []);
}, 'Animation.animate must not enqueue an attributeChanged reaction when it mutates the style attribute but the style attribute is not observed');

</script>
</body>
</html>
