gecko-dev/js/tests/ecma_2/browser.js

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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 * the License. You may obtain a copy of the License at
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 *
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 * 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
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 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
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/*
 * JavaScript test library shared functions file for running the tests
 * in the browser.  Overrides the shell's print function with document.write
 * and make everything HTML pretty.
 *
 * To run the tests in the browser, use the mkhtml.pl script to generate
 * html pages that include the shell.js, browser.js (this file), and the
 * test js file in script tags.
 *
 * The source of the page that is generated should look something like this:
 *      <script src="./../shell.js"></script>
 *      <script src="./../browser.js"></script>
 *      <script src="./mytest.js"></script>
 */

var GLOBAL = "[object Window]";

function writeLineToLog( string ) {
  document.write( string + "<br>\n");
}
function writeHeaderToLog( string ) {
  document.write( "<h2>" + string + "</h2>" );
}

function writeFormattedResult( expect, actual, string, passed ) {
  var s = "<tt>"+ string ;
  s += "<b>" ;
  s += ( passed ) ? "<font color=#009900> &nbsp;" + PASSED
    : "<font color=#aa0000>&nbsp;" +  FAILED + expect + "</tt>";
  writeLineToLog( s + "</font></b></tt>" );
  return passed;
}


/*
 * The earlier versions of the test code used exceptions
 * to terminate the test script in "negative" test cases
 * before the failure reporting code could run. In order
 * to be able to capture errors for the "negative" case 
 * where the exception is a sign the test actually passed,
 * the err online handler will assume that any error is a 
 * failure unless gExceptionExpected is true.
 */
window.onerror = err;
var gExceptionExpected = false;

function err( msg, page, line ) {
  var testcase;

  if (typeof(EXPECTED) == "undefined" || EXPECTED != "error") {
    /*
     * an unexpected exception occured
     */
    writeLineToLog( "Test failed with the message: " + msg );
    testcase = new TestCase(SECTION, "unknown", "unknown", "unknown");
    testcase.passed = false;
    testcase.reason = "Error: " + msg + 
      " Source File: " + page + " Line: " + line + ".";
    return;
  }

  if (typeof SECTION == 'undefined')
  {
    SECTION = 'Unknown';
  }
  if (typeof DESCRIPTION == 'undefined')
  {
    DESCRIPTION = 'Unknown';
  }
  if (typeof EXPECTED == 'undefined')
  {
    EXPECTED = 'Unknown';
  }

  testcase = new TestCase(SECTION, DESCRIPTION, EXPECTED, "error");
  testcase.reason += "Error: " + msg + 
    " Source File: " + page + " Line: " + line + ".";
  stopTest();
}

var gVersion = 0;

function version(v)
{
  if (v) { 
    gVersion = v; 
  } 
  return gVersion; 
}

var gPrivileges = 'UniversalXPConnect';

function setBoolPref(prefName, newValue)
{
  var prevValue = false;

  try
  {
    netscape.security.PrivilegeManager.
      enablePrivilege(gPrivileges);

    var preferences = Components.classes['@mozilla.org/preferences;1'];
    if (preferences)
    {
      var prefService = preferences.
                         getService(Components.interfaces.nsIPrefService);
      var pref = prefService.getBranch('');
      try
      {
        prevValue = pref.getBoolPref(prefName);
      }
      catch(eget)
      {
        writeLineToLog('Unable to get preference ' +  prefName);
      }
      pref.setBoolPref(prefName, newValue);
    }
  }
  catch (e)
  {
    writeLineToLog('Unable to set preference ' + 
                   prefName + ' to ' + prevValue);
  }
  return prevValue;
}