Add a CEReaction test for Animation.prototype.commitStyles. (#34869)
* Add a CEReaction test for Animation.prototype.commitStyles.
Co-authored-by: Marcos Cáceres <marcos@marcosc.com>
diff --git a/custom-elements/reactions/Animation.html b/custom-elements/reactions/Animation.html
new file mode 100644
index 0000000..47eff97
--- /dev/null
+++ b/custom-elements/reactions/Animation.html
@@ -0,0 +1,66 @@
+<!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>
