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+<!DOCTYPE html>
+<html>
+<head>
+<title>Custom Elements: disconnectedCallback</title>
+<meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
+<meta name="assert" content="disconnectedCallback must be enqueued whenever custom element is removed from a document">
+<link rel="help" href="https://w3c.github.io/webcomponents/spec/custom/#dfn-connected-callback">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="./resources/custom-elements-helpers.js"></script>
+</head>
+<body>
+<div id="log"></div>
+<script>
+
+var calls = [];
+class MyCustomElement extends HTMLElement {
+ connectedCallback() { calls.push('connected', this); }
+ disconnectedCallback() { calls.push('disconnected', this); }
+}
+customElements.define('my-custom-element', MyCustomElement);
+
+document_types().forEach(function (entry) {
+ var documentName = entry.name;
+ var getDocument = entry.create;
+
+ promise_test(function () {
+ return getDocument().then(function (doc) {
+ var instance = document.createElement('my-custom-element');
+ doc.documentElement.appendChild(instance);
+ calls = [];
+ doc.documentElement.removeChild(instance);
+ assert_array_equals(calls, ['disconnected', instance]);
+ });
+ }, 'Removing a custom element from ' + documentName + ' must enqueue and invoke disconnectedCallback');
+
+ promise_test(function () {
+ return getDocument().then(function (doc) {
+ var instance = document.createElement('my-custom-element');
+ var parent = document.createElement('div');
+ parent.appendChild(instance);
+ doc.documentElement.appendChild(parent);
+ calls = [];
+ doc.documentElement.removeChild(parent);
+ assert_array_equals(calls, ['disconnected', instance]);
+ });
+ }, 'Removing an ancestor of custom element from ' + documentName + ' must enqueue and invoke disconnectedCallback');
+
+ promise_test(function () {
+ return getDocument().then(function (doc) {
+ var instance = document.createElement('my-custom-element');
+ var host = doc.createElementNS('http://www.w3.org/1999/xhtml', 'div');
+ var shadowRoot = host.attachShadow({mode: 'closed'});
+ doc.documentElement.appendChild(host);
+ shadowRoot.appendChild(instance);
+
+ calls = [];
+ shadowRoot.removeChild(instance);
+ assert_array_equals(calls, ['disconnected', instance]);
+ });
+ }, 'Removing a custom element from a shadow tree in ' + documentName + ' must enqueue and invoke disconnectedCallback');
+
+ promise_test(function () {
+ return getDocument().then(function (doc) {
+ var instance = document.createElement('my-custom-element');
+ var host = doc.createElementNS('http://www.w3.org/1999/xhtml', 'div');
+ var shadowRoot = host.attachShadow({mode: 'closed'});
+ shadowRoot.appendChild(instance);
+ doc.documentElement.appendChild(host);
+
+ calls = [];
+ doc.documentElement.removeChild(host);
+ assert_array_equals(calls, ['disconnected', instance]);
+ });
+ }, 'Removing the shadow host of a custom element from a' + documentName + ' must enqueue and invoke disconnectedCallback');
+
+ promise_test(function () {
+ return getDocument().then(function (doc) {
+ var instance = document.createElement('my-custom-element');
+ var host = doc.createElementNS('http://www.w3.org/1999/xhtml', 'div');
+ var shadowRoot = host.attachShadow({mode: 'closed'});
+ shadowRoot.appendChild(instance);
+
+ calls = [];
+ shadowRoot.removeChild(instance);
+ assert_array_equals(calls, []);
+ });
+ }, 'Removing a custom element from a detached shadow tree that belongs to ' + documentName + ' must not enqueue and invoke disconnectedCallback');
+});
+
+</script>
+</body>
+</html>