palemoon-dev/platform/xpcom/tests/unit/test_file_createUnique.js

/* -*- indent-tabs-mode: nil; js-indent-level: 2 -*-
 * 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/. */

var Cc = Components.classes;
var Ci = Components.interfaces;
var Cr = Components.results;

function run_test()
{
  // Generate a leaf name that is 255 characters long.
  var longLeafName = new Array(256).join("T");

  // Generate the path for a file located in a directory with a long name.
  var tempFile = Cc["@mozilla.org/file/directory_service;1"].
                 getService(Ci.nsIProperties).get("TmpD", Ci.nsIFile);
  tempFile.append(longLeafName);
  tempFile.append("test.txt");

  try {
    tempFile.createUnique(Ci.nsIFile.NORMAL_FILE_TYPE, 0o600);
    do_throw("Creating an item in a folder with a very long name should throw");
  }
  catch (e if (e instanceof Ci.nsIException &&
               e.result == Cr.NS_ERROR_FILE_UNRECOGNIZED_PATH)) {
    // We expect the function not to crash but to raise this exception.
  }
}