pseudo-class-defined.html

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This WPT test may be referenced by the following Test IDs:
- /custom-elements/pseudo-class-defined.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<link rel="help" href="https://html.spec.whatwg.org/multipage/semantics-other.html#selector-defined">

<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)';

const iframe = document.getElementById("iframe");

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.

    let try_upgrade = !data.defined;

    test_defined_for_createElement(data.defined, try_upgrade, 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, data.is, 'Without browsing context: ');

  done();

};

function test_defined_for_createElement(defined, should_test_change, doc, tag_name, is, 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`);

test(function () {

    var log = [];

    var instance = document.createElement('my-custom-element-2');

    document.body.appendChild(instance);

    assert_false(instance.matches(":defined"), "Prior to definition, instance should not match :defined");

    customElements.define('my-custom-element-2',class extends HTMLElement {

        constructor() {

            assert_false(instance.matches(":defined"), "During construction, prior to super(), instance should not match :defined");

            super();

            log.push([this, 'begin']);

            assert_false(this.matches(":defined"), "During construction, after super(), this should not match :defined");

            log.push([this, 'end']);

});

    assert_true(instance.matches(":defined"), "After construction, instance should match :defined");

    assert_equals(log.length, 2);

    assert_array_equals(log[0], [instance, 'begin']);

    assert_array_equals(log[1], [instance, 'end']);

}, 'this.matches(:defined) should not match during an upgrade');

</script>