@webcomponents/custom-elements
Version:
HTML Custom Elements Polyfill
170 lines (142 loc) • 5.74 kB
HTML
<html>
<head>
<title>Element#innerHTML</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) {
customElements.define(localName, class extends HTMLElement {
constructor() {
super();
this.constructed = true;
this.connectedCallbackCount = 0;
this.disconnectedCallbackCount = 0;
}
connectedCallback() {
this.connectedCallbackCount++;
}
disconnectedCallback() {
this.disconnectedCallbackCount++;
}
});
}
suite('Custom elements in the assigned string are created when setting `innerHTML`.', function() {
let localName1;
let localName2;
setup(function() {
localName1 = generateLocalName();
defineWithLocalName(localName1);
localName2 = generateLocalName();
defineWithLocalName(localName2);
});
test('get/set innerHTML on elements with parsing rules', function() {
const div = document.createElement('div');
const html = '<span>A</span>';
div.innerHTML = html;
assert.equal(div.innerHTML, html);
assert.equal(div.childNodes.length, 1);
const table = document.createElement('table');
const tableHtml = '<tbody></tbody>';
table.innerHTML = tableHtml;
assert.equal(table.innerHTML, tableHtml);
assert.equal(table.childNodes.length, 1);
});
test('Disconnected context element', function() {
const div = document.createElement('div');
div.innerHTML = `<${localName1}><${localName2}></${localName2}></${localName1}>`;
assert.equal(div.childNodes.length, 1);
assert.equal(div.childNodes[0].localName, localName1);
assert.equal(div.childNodes[0].connectedCallbackCount, 0);
assert.equal(div.childNodes[0].disconnectedCallbackCount, 0);
assert.equal(div.childNodes[0].childNodes.length, 1);
assert.equal(div.childNodes[0].childNodes[0].localName, localName2);
assert.equal(div.childNodes[0].childNodes[0].connectedCallbackCount, 0);
assert.equal(div.childNodes[0].childNodes[0].disconnectedCallbackCount, 0);
assert.equal(div.childNodes[0].childNodes[0].childNodes.length, 0);
});
test('Connected context element', function() {
const div = document.createElement('div');
document.body.appendChild(div);
div.innerHTML = `<${localName1}><${localName2}></${localName2}></${localName1}>`;
assert.equal(div.childNodes.length, 1);
assert.equal(div.childNodes[0].localName, localName1);
assert.equal(div.childNodes[0].connectedCallbackCount, 1);
assert.equal(div.childNodes[0].disconnectedCallbackCount, 0);
assert.equal(div.childNodes[0].childNodes.length, 1);
assert.equal(div.childNodes[0].childNodes[0].localName, localName2);
assert.equal(div.childNodes[0].childNodes[0].connectedCallbackCount, 1);
assert.equal(div.childNodes[0].childNodes[0].disconnectedCallbackCount, 0);
assert.equal(div.childNodes[0].childNodes[0].childNodes.length, 0);
document.body.removeChild(div);
});
});
suite('Custom element descendants of the context element are disconnected when setting `innerHTML`.', function() {
let localName1;
let localName2;
let div;
let element1;
let element2;
setup(function() {
localName1 = generateLocalName();
localName2 = generateLocalName();
defineWithLocalName(localName1);
defineWithLocalName(localName2);
div = document.createElement('div');
element1 = document.createElement(localName1);
element2 = document.createElement(localName2);
div.appendChild(element1);
element1.appendChild(element2);
assert.equal(div.childNodes.length, 1);
assert.equal(element1.connectedCallbackCount, 0);
assert.equal(element1.disconnectedCallbackCount, 0);
assert.equal(element1.childNodes.length, 1);
assert.equal(element2.connectedCallbackCount, 0);
assert.equal(element2.disconnectedCallbackCount, 0);
assert.equal(element2.childNodes.length, 0);
});
test('Disconnected context element', function() {
div.innerHTML = "";
// `div` no longer has children.
assert.equal(div.childNodes.length, 0);
// `div` was disconnected, no callbacks were called.
assert.equal(element1.localName, localName1);
assert.equal(element1.connectedCallbackCount, 0);
assert.equal(element1.disconnectedCallbackCount, 0);
assert.equal(element2.localName, localName2);
assert.equal(element2.connectedCallbackCount, 0);
assert.equal(element2.disconnectedCallbackCount, 0);
});
test('Connected context element', function() {
document.body.appendChild(div);
assert.equal(div.childNodes.length, 1);
// `element1` was connected.
assert.equal(element1.connectedCallbackCount, 1);
assert.equal(element1.disconnectedCallbackCount, 0);
// `element2` was connected.
assert.equal(element2.connectedCallbackCount, 1);
assert.equal(element2.disconnectedCallbackCount, 0);
div.innerHTML = "";
// `div` no longer has children.
assert.equal(div.childNodes.length, 0);
// `element1` was disconnected.
assert.equal(element1.connectedCallbackCount, 1);
assert.equal(element1.disconnectedCallbackCount, 1);
// `element2` was disconnected.
assert.equal(element2.connectedCallbackCount, 1);
assert.equal(element2.disconnectedCallbackCount, 1);
document.body.removeChild(div);
});
});
</script>
</body>
</html>