@webcomponents/custom-elements
Version:
HTML Custom Elements Polyfill
116 lines (93 loc) • 3.52 kB
HTML
<html>
<head>
<title>Element#insertAdjacentElement</title>
<script>
(window.customElements = window.customElements || {}).forcePolyfill = true;
</script>
<script src="../../../../es6-promise/dist/es6-promise.auto.min.js"></script>
<script src="../../../../web-component-tester/browser.js"></script>
<script src="../../../custom-elements.min.js"></script>
</head>
<body>
<script>
function generateLocalName() {
return 'test-element-' + Math.random().toString(32).substring(2);
}
function defineWithLocalName(localName, observedAttributes) {
customElements.define(localName, class extends HTMLElement {
constructor() {
super();
this.constructed = true;
this.connectedCallbackCount = 0;
this.disconnectedCallbackCount = 0;
}
connectedCallback() {
this.connectedCallbackCount++;
}
disconnectedCallback() {
this.disconnectedCallbackCount++;
}
});
}
suite('Inserting a custom element into a disconnected context element.', function() {
let disconnectedElement;
let localName;
let customElement;
setup(function() {
disconnectedElement = document.createElement('div');
localName = generateLocalName();
defineWithLocalName(localName);
customElement = document.createElement(localName);
});
test('Inserting a disconnected custom element.', function() {
assert.equal(customElement.connectedCallbackCount, 0);
assert.equal(customElement.disconnectedCallbackCount, 0);
disconnectedElement.insertAdjacentElement('afterbegin', customElement);
assert.equal(customElement.connectedCallbackCount, 0);
assert.equal(customElement.disconnectedCallbackCount, 0);
});
test('Inserting a connected custom element.', function() {
document.body.appendChild(customElement);
assert.equal(customElement.connectedCallbackCount, 1);
assert.equal(customElement.disconnectedCallbackCount, 0);
disconnectedElement.insertAdjacentElement('afterbegin', customElement);
assert.equal(customElement.connectedCallbackCount, 1);
assert.equal(customElement.disconnectedCallbackCount, 1);
});
});
suite('Inserting a custom element into a connected context element.', function() {
let connectedElement;
let localName;
let customElement;
setup(function() {
connectedElement = document.createElement('div');
document.body.appendChild(connectedElement);
localName = generateLocalName();
defineWithLocalName(localName);
customElement = document.createElement(localName);
});
teardown(function() {
if (connectedElement.parentNode) {
connectedElement.parentNode.removeChild(connectedElement);
}
});
test('Inserting a disconnected custom element.', function() {
assert.equal(customElement.connectedCallbackCount, 0);
assert.equal(customElement.disconnectedCallbackCount, 0);
connectedElement.insertAdjacentElement('afterbegin', customElement);
assert.equal(customElement.connectedCallbackCount, 1);
assert.equal(customElement.disconnectedCallbackCount, 0);
});
test('Inserting a connected custom element.', function() {
document.body.appendChild(customElement);
assert.equal(customElement.connectedCallbackCount, 1);
assert.equal(customElement.disconnectedCallbackCount, 0);
connectedElement.insertAdjacentElement('afterbegin', customElement);
assert.equal(customElement.connectedCallbackCount, 2);
assert.equal(customElement.disconnectedCallbackCount, 1);
});
});
</script>
</body>
</html>