browser_data_document_crossOriginIsolated.js

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"use strict";

const DIRPATH = getRootDirectory(gTestPath).replace(

  "chrome://mochitests/content/",

""

);

const PATH = DIRPATH + "file_coop_coep.html";

const ORIGIN = "https://test1.example.com";

const URL = `${ORIGIN}/${PATH}`;

add_task(async function () {

  await BrowserTestUtils.withNewTab(URL, async function (browser) {

    BrowserTestUtils.startLoadingURIString(browser, URL);

    await BrowserTestUtils.browserLoaded(browser);

    await SpecialPowers.spawn(browser, [ORIGIN], async origin => {

is(

        content.window.origin,

        origin,

        `Opened a tab and navigated to ${origin}`

);

ok(

        content.window.crossOriginIsolated,

        `Should have been cross-origin-isolated env`

);

      let hostIds = [];

      function createShadowDOMAndTriggerSlotChange(host) {

        var shadow = host.attachShadow({ mode: "closed" });

        let promise = new Promise(resolve => {

          shadow.addEventListener("slotchange", function () {

            hostIds.push(host.id);

            resolve();

});

});

        shadow.innerHTML = "<slot></slot>";

        host.appendChild(host.ownerDocument.createElement("span"));

        return promise;

      let host1 = content.document.getElementById("host1");

      let dataDoc = content.document.implementation.createHTMLDocument();

      dataDoc.body.innerHTML = "<div id='host2'></div>";

      let host2 = dataDoc.body.firstChild;

      let host3 = content.document.getElementById("host3");

      let promises = [];

      promises.push(createShadowDOMAndTriggerSlotChange(host1));

      promises.push(createShadowDOMAndTriggerSlotChange(host2));

      promises.push(createShadowDOMAndTriggerSlotChange(host3));

      await Promise.all(promises);

      is(hostIds.length, 3, `Got 3 slot change events`);

      is(hostIds[0], "host1", `The first one was host1`);

      is(hostIds[1], "host2", `The second one was host2`);

      is(hostIds[2], "host3", `The third one was host3`);

});

});

});