browser_file_input.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/name.js */

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

addAccessibleTask(

<input type="file" id="noName">

<input type="file" id="ariaLabel" aria-label="ariaLabel">

<label>wrappingLabel <input type="file" id="wrappingLabel"></label>

<label for="labelFor">labelFor</label> <input type="file" id="labelFor">

<input type="file" id="title" title="title">

`,

  async function (browser, docAcc) {

    const browseButton = "Browse…";

    const noFileSuffix = `${browseButton} No file selected.`;

    const noName = findAccessibleChildByID(docAcc, "noName");

    testName(noName, noFileSuffix);

    const ariaLabel = findAccessibleChildByID(docAcc, "ariaLabel");

    testName(ariaLabel, `ariaLabel ${noFileSuffix}`);

    const wrappingLabel = findAccessibleChildByID(docAcc, "wrappingLabel");

    testName(wrappingLabel, `wrappingLabel ${noFileSuffix}`);

    const labelFor = findAccessibleChildByID(docAcc, "labelFor");

    testName(labelFor, `labelFor ${noFileSuffix}`);

    const title = findAccessibleChildByID(docAcc, "title");

    testName(title, noFileSuffix);

    testDescr(title, "title");

    // Test that the name of the button changes correctly when a file is chosen.

    function chooseFile(id) {

      return invokeContentTask(browser, [id], contentId => {

        const MockFilePicker = content.SpecialPowers.MockFilePicker;

        MockFilePicker.init(content.browsingContext);

        MockFilePicker.useBlobFile();

        MockFilePicker.returnValue = MockFilePicker.returnOK;

        const input = content.document.getElementById(contentId);

        const inputReceived = new Promise(resolve =>

          input.addEventListener(

            "input",

            event => {

              MockFilePicker.cleanup();

              resolve(event.target.files[0].name);

},

            { once: true }

);

        // Activate the page to allow opening the file picker.

        content.SpecialPowers.wrap(

          content.document

        ).notifyUserGestureActivation();

        input.click();

        return inputReceived;

});

    info("noName: Choosing file");

    let nameChanged = waitForEvent(EVENT_NAME_CHANGE, "noName");

    const fn = await chooseFile("noName");

    // e.g. "Browse…helloworld.txt"

    const withFileSuffix = `${browseButton} ${fn}`;

    await nameChanged;

    testName(noName, withFileSuffix);

    info("ariaLabel: Choosing file");

    nameChanged = waitForEvent(EVENT_NAME_CHANGE, "ariaLabel");

    await chooseFile("ariaLabel");

    await nameChanged;

    testName(ariaLabel, `ariaLabel ${withFileSuffix}`);

    info("wrappingLabel: Choosing file");

    nameChanged = waitForEvent(EVENT_NAME_CHANGE, "wrappingLabel");

    await chooseFile("wrappingLabel");

    await nameChanged;

    testName(wrappingLabel, `wrappingLabel ${withFileSuffix}`);

},

  { topLevel: true, chrome: true }

);