browser_aria_expanded.js

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

"use strict";

/* import-globals-from ../../mochitest/states.js */

loadScripts({ name: "states.js", dir: MOCHITESTS_DIR });

// Test aria-expanded on a button

addAccessibleTask(

  `hello world<br>

  <button aria-expanded="false" id="b">I am a button</button><br>

  goodbye`,

  async (browser, accDoc) => {

    let button = getNativeInterface(accDoc, "b");

    is(button.getAttributeValue("AXExpanded"), 0, "button is not expanded");

    let stateChanged = Promise.all([

      waitForStateChange("b", STATE_EXPANDED, true),

      waitForStateChange("b", STATE_COLLAPSED, false),

]);

    await SpecialPowers.spawn(browser, [], () => {

      content.document

        .getElementById("b")

        .setAttribute("aria-expanded", "true");

});

    await stateChanged;

    is(button.getAttributeValue("AXExpanded"), 1, "button is expanded");

    stateChanged = Promise.all([

      waitForStateChange("b", STATE_EXPANDED, false),

      waitForStateChange("b", EXT_STATE_EXPANDABLE, false, true),

]);

    await SpecialPowers.spawn(browser, [], () => {

      content.document.getElementById("b").removeAttribute("aria-expanded");

});

    await stateChanged;

ok(

      !button.attributeNames.includes("AXExpanded"),

      "button has no expanded attr"

);

);