@webcomponents/custom-elements
Version:
HTML Custom Elements Polyfill
81 lines (70 loc) • 3.32 kB
HTML
<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>
<iframe id="iframe"></iframe>
<script>
const testList = [
{ tag_name: 'div', defined: true },
{ tag_name: 'a-a', defined: false },
{ tag_name: 'font-face', defined: true },
];
// Setup iframe to test the parser.
const neither = 'rgb(255, 0, 0)';
const defined = 'rgb(255, 165, 0)';
const not_defined = 'rgb(0, 0, 255)';
iframe.srcdoc = `<style>
* { color:${neither}; }
:defined { color:${defined}; }
:not(:defined) { color:${not_defined}; }
</style>`
+ testList.map(d => `<${d.tag_name}></${d.tag_name}>`).join('');
setup({ explicit_done: true });
iframe.onload = () => {
const doc = iframe.contentDocument;
const doc_without_browsing_context = doc.implementation.createHTMLDocument();
for (const data of testList) {
// Test elements inserted by parser.
test_defined(data.defined, doc.getElementsByTagName(data.tag_name)[0], `<${data.tag_name}>`);
// Test DOM createElement() methods.
test_defined_for_createElement(data.defined, !data.defined, doc, data.tag_name);
// Documents without browsing context should behave the same.
test_defined_for_createElement(data.defined, false, doc_without_browsing_context, data.tag_name, 'Without browsing context: ');
}
done();
};
function test_defined_for_createElement(defined, should_test_change, doc, tag_name, description = '') {
// Test document.createElement().
let element = doc.createElement(tag_name);
doc.body.appendChild(element);
test_defined(defined, element, `${description}createElement("${tag_name}")`);
// Test document.createElementNS().
let html_element = doc.createElementNS('http://www.w3.org/1999/xhtml', tag_name);
doc.body.appendChild(html_element);
test_defined(defined, html_element, `${description}createElementNS("http://www.w3.org/1999/xhtml", "${tag_name}")`);
// If the element namespace is not HTML, it should be "uncustomized"; i.e., "defined".
let svg_element = doc.createElementNS('http://www.w3.org/2000/svg', tag_name);
doc.body.appendChild(svg_element);
test_defined(true, svg_element, `${description}createElementNS("http://www.w3.org/2000/svg", "${tag_name}")`);
// Test ":defined" changes when the custom element was defined.
if (should_test_change) {
let w = doc.defaultView;
assert_false(!w, 'defaultView required to test change');
w.customElements.define(tag_name, class extends w.HTMLElement {
constructor() { super(); }
});
test_defined(true, element, `Upgraded ${description}createElement("${tag_name}")`);
test_defined(true, html_element, `Upgraded ${description}createElementNS("http://www.w3.org/1999/xhtml", "${tag_name}")`);
}
}
function test_defined(expected, element, description) {
test(() => {
assert_equals(element.matches(':defined'), expected, 'matches(":defined")');
assert_equals(element.matches(':not(:defined)'), !expected, 'matches(":not(:defined")');
const view = element.ownerDocument.defaultView;
if (!view)
return;
const style = view.getComputedStyle(element);
assert_equals(style.color, expected ? defined : not_defined, 'getComputedStyle');
}, `${description} should ${expected ? 'be' : 'not be'} :defined`);
}
</script>