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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /custom-elements/connected-callbacks.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<html>
<head>
<title>Custom Elements: connectedCallback</title>
<meta name="author" title="Ryosuke Niwa" href="mailto:rniwa@webkit.org">
<meta name="assert" content="connectedCallback must be enqueued whenever custom element is inserted into a document">
<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');
calls = [];
doc.documentElement.appendChild(instance);
assert_array_equals(calls, ['connected', instance]);
});
}, 'Inserting a custom element into ' + documentName + ' must enqueue and invoke connectedCallback');
promise_test(function () {
return getDocument().then(function (doc) {
var instance = document.createElement('my-custom-element');
var parent = document.createElement('div');
parent.appendChild(instance);
calls = [];
doc.documentElement.appendChild(parent);
assert_array_equals(calls, ['connected', instance]);
});
}, 'Inserting an ancestor of custom element into ' + documentName + ' must enqueue and invoke connectedCallback');
promise_test(function () {
return getDocument().then(function (doc) {
var instance = document.createElement('my-custom-element');
var shadowRoot = host.attachShadow({mode: 'closed'});
doc.documentElement.appendChild(host);
calls = [];
shadowRoot.appendChild(instance);
assert_array_equals(calls, ['connected', instance]);
});
}, 'Inserting a custom element into a shadow tree in ' + documentName + ' must enqueue and invoke connectedCallback');
promise_test(function () {
return getDocument().then(function (doc) {
var instance = document.createElement('my-custom-element');
var shadowRoot = host.attachShadow({mode: 'closed'});
shadowRoot.appendChild(instance);
calls = [];
doc.documentElement.appendChild(host);
assert_array_equals(calls, ['connected', instance]);
});
}, 'Inserting the shadow host of a custom element into ' + documentName + ' must enqueue and invoke connectedCallback');
promise_test(function () {
return getDocument().then(function (doc) {
var instance = document.createElement('my-custom-element');
var shadowRoot = host.attachShadow({mode: 'closed'});
calls = [];
shadowRoot.appendChild(instance);
assert_array_equals(calls, []);
});
}, 'Inserting a custom element into a detached shadow tree that belongs to ' + documentName + ' must not enqueue and invoke connectedCallback');
});
</script>
</body>
</html>