gecko/testing/xpcshell/head.js

/* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim:set ts=2 sw=2 sts=2 et: */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is Google Inc.
 * Portions created by the Initial Developer are Copyright (C) 2005
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *  Darin Fisher <darin@meer.net>
 *  Boris Zbarsky <bzbarsky@mit.edu>
 *  Jeff Walden <jwalden+code@mit.edu>
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

/*
 * This file contains common code that is loaded before each test file(s).
 * See http://developer.mozilla.org/en/docs/Writing_xpcshell-based_unit_tests
 * for more information.
 */

var _quit = false;
var _fail = false;
var _tests_pending = 0;

// Disable automatic network detection, so tests work correctly when
// not connected to a network.
let (ios = Components.classes["@mozilla.org/network/io-service;1"]
           .getService(Components.interfaces.nsIIOService2)) {
  ios.manageOfflineStatus = false;
  ios.offline = false;
}

function _TimerCallback(expr) {
  this._expr = expr;
}
_TimerCallback.prototype = {
  _expr: "",
  QueryInterface: function(iid) {
    if (iid.Equals(Components.interfaces.nsITimerCallback) ||
        iid.Equals(Components.interfaces.nsISupports))
      return this;
    throw Components.results.NS_ERROR_NO_INTERFACE;
  },
  notify: function(timer) {
    eval(this._expr);
  }
};

function _do_main() {
  if (_quit)
    return;

  dump("*** running event loop\n");
  var thr = Components.classes["@mozilla.org/thread-manager;1"]
                      .getService().currentThread;

  while (!_quit)
    thr.processNextEvent(true);

  while (thr.hasPendingEvents())
    thr.processNextEvent(true);
}

function _do_quit() {
  dump("*** exiting\n");

  _quit = true;
}

function _execute_test() {
  try {
    do_test_pending();
    run_test();
    do_test_finished();
    _do_main();
  } catch (e) {
    _fail = true;
    dump(e + "\n");
  }

  if (_fail)
    dump("*** FAIL ***\n");
  else
    dump("*** PASS ***\n");
}


/************** Functions to be used from the tests **************/


function do_timeout(delay, expr) {
  var timer = Components.classes["@mozilla.org/timer;1"]
                        .createInstance(Components.interfaces.nsITimer);
  timer.initWithCallback(new _TimerCallback(expr), delay, timer.TYPE_ONE_SHOT);
}

function do_throw(text, stack) {
  if (!stack)
    stack = Components.stack.caller;
  _fail = true;
  _do_quit();
  dump("*** TEST-UNEXPECTED-FAIL | " + stack.filename + " | " + text + "\n");
  var frame = Components.stack;
  while (frame != null) {
    dump(frame + "\n");
    frame = frame.caller;
  }
  throw Components.results.NS_ERROR_ABORT;
}

function do_check_neq(left, right, stack) {
  if (!stack)
    stack = Components.stack.caller;
  if (left == right)
    do_throw(left + " != " + right, stack);
}

function do_check_eq(left, right, stack) {
  if (!stack)
    stack = Components.stack.caller;
  if (left != right)
    do_throw(left + " == " + right, stack);
}

function do_check_true(condition, stack) {
  if (!stack)
    stack = Components.stack.caller;
  do_check_eq(condition, true, stack);
}

function do_check_false(condition, stack) {
  if (!stack)
    stack = Components.stack.caller;
  do_check_eq(condition, false, stack);
}

function do_test_pending() {
  dump("*** test pending\n");
  _tests_pending++;
}

function do_test_finished() {
  dump("*** test finished\n");
  if (--_tests_pending == 0)
    _do_quit();
}

function do_get_file(path, allowNonexistent) {
  try {
    let lf = Components.classes["@mozilla.org/file/directory_service;1"]
      .getService(Components.interfaces.nsIProperties)
      .get("CurWorkD", Components.interfaces.nsILocalFile);

    let bits = path.split("/");
    for (let i = 0; i < bits.length; i++) {
      if (bits[i]) {
        if (bits[i] == "..")
          lf = lf.parent;
        else
          lf.append(bits[i]);
      }
    }

    if (!allowNonexistent) {
      if (!lf.exists()) {
        print(lf.path + " doesn't exist\n");
      }
      do_check_true(lf.exists());
    }

    return lf;
  }
  catch(ex) {
    do_throw(ex.toString(), Components.stack.caller);
  }
  return null;
}

// do_get_cwd() isn't exactly self-explanatory, so provide a helper
function do_get_cwd() {
  return do_get_file("");
}

function do_load_module(path) {
  var lf = do_get_file(path);
  const nsIComponentRegistrar = Components.interfaces.nsIComponentRegistrar;
  do_check_true(Components.manager instanceof nsIComponentRegistrar);
  Components.manager.autoRegister(lf);
}

/**
 * Parse a DOM document.
 *
 * @param aPath File path to the document.
 * @param aType Content type to use in DOMParser.
 *
 * @return nsIDOMDocument from the file.
 */
function do_parse_document(aPath, aType) {
  switch (aType) {
    case "application/xhtml+xml":
    case "application/xml":
    case "text/xml":
      break;

    default:
      throw new Error("do_parse_document requires content-type of " +
                      "application/xhtml+xml, application/xml, or text/xml.");
  }

  var lf = do_get_file(aPath);
  const C_i = Components.interfaces;
  const parserClass = "@mozilla.org/xmlextras/domparser;1";
  const streamClass = "@mozilla.org/network/file-input-stream;1";
  var stream = Components.classes[streamClass]
                         .createInstance(C_i.nsIFileInputStream);
  stream.init(lf, -1, -1, C_i.nsIFileInputStream.CLOSE_ON_EOF);
  var parser = Components.classes[parserClass]
                         .createInstance(C_i.nsIDOMParser);
  var doc = parser.parseFromStream(stream, null, lf.fileSize, aType);
  parser = null;
  stream = null;
  lf = null;
  return doc;
}