browser_download_succeeds_with_inaccessible_tmp.js

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/* Any copyright is dedicated to the Public Domain.

   http://creativecommons.org/publicdomain/zero/1.0/ */

"use strict";

/**

 * Checks in default conditions a downlod succeeds even if the temp folder is

 * inaccessible (access denied).

*/

let gDownloadDir;

add_setup(async function () {

  // Need to start the server before `httpUrl` calls.

  startServer();

  registerCleanupFunction(task_resetState);

  gDownloadDir = new FileUtils.File(await setDownloadDir());

  // Ensure we're not starting downloads in tmp, otherwise this test doesn't

  // make sense.

  await SpecialPowers.pushPrefEnv({

    set: [["browser.download.start_downloads_in_tmp_dir", false]],

});

  // Replace the temp folder with an inaccessible one.

  const originalTmp = Services.dirsvc.get("TmpD", Ci.nsIFile);

  const path = PathUtils.join(PathUtils.profileDir, "rotemp");

  await IOUtils.makeDirectory(path);

  await IOUtils.setPermissions(path, 0o444);

  registerCleanupFunction(async () => {

    Services.dirsvc.undefine("TmpD");

    Services.dirsvc.set("TmpD", originalTmp);

    await IOUtils.setPermissions(path, 0o777);

    await IOUtils.remove(path, { recursive: true });

});

  Services.dirsvc.undefine("TmpD");

  Services.dirsvc.set("TmpD", await IOUtils.getFile(path));

});

add_task(async function test() {

  let list = await Downloads.getList(Downloads.PUBLIC);

  let downloadStarted = new Promise(resolve => {

    let view = {

      onDownloadAdded(download) {

        info("onDownloadAdded");

        list.removeView(view);

        resolve(download);

},

};

    list.addView(view);

});

  serveInterruptibleAsDownload();

  mustInterruptResponses();

  await BrowserTestUtils.withNewTab(

      gBrowser,

      url: httpUrl("interruptible.txt"),

      waitForLoad: false,

      waitForStop: true,

},

    async function () {

      let download = await downloadStarted;

      Assert.equal(

        PathUtils.parent(download.target.path),

        gDownloadDir.path,

        "Should have put final file in the downloads dir."

);

      continueResponses();

      await download.whenSucceeded();

      Assert.ok(download.succeeded, "The download succeeded");

      Assert.ok(!download.error, "The download has no error");

      await IOUtils.remove(download.target.path);

);

  await list.removeFinished();

});