gecko-dev/layout/tools/tests/regression_tests.js

const nsIFilePicker = Components.interfaces.nsIFilePicker;
const nsIFrameDebugObject = Components.interfaces.nsIFrameDebugObject;

const kTestTypeBaseline         = 1;
const kTestTypeVerify           = 2;
const kTestTypeVerifyAndCompare = 3;
const kTestTypeCompare          = 4;

const kTestSourceSingleFile     = 1;
const kTestSourceDirList        = 2;

var gTestcaseDirArray = new Array;    // array of nsILocalFiles

var gBaselineOutputDir;       // nsIFile
var gVerifyOutputDir;         // nsIFile

var gBaselineFileExtension;   // string
var gVerifyFileExtension;     // string

var gTestType;                // baseline, verify, compare etc.

var gTestWindow;
var gTestURLs = new Array;
var gTestURLsIndex;

function DoOnload()
{
  netscape.security.PrivilegeManager.enablePrivilege("UniversalXPConnect");

  // clear any values that the form manager may have unhelpfully filled in
  document.testForm.singleTestFileInput.value = "";
  document.testForm.baselineOutputDir.value = "";
  document.testForm.verifyOutputDir.value = "";
  
  InitFormFromPrefs();
  
  UpdateRunTestsButton();
}

function InitFormFromPrefs()
{
  // load prefs
  try {
    var testURL = GetStringPref("nglayout.debug.testcaseURL");
    document.testForm.singleTestFileInput.value = testURL;
    
    var baselineDirURL = GetStringPref("nglayout.debug.baselineDirURL");
    gBaselineOutputDir = GetFileFromURISpec(baselineDirURL);
    document.testForm.baselineOutputDir.value = gBaselineOutputDir.path;
    
    var verifyDirURL = GetStringPref("nglayout.debug.verifyDirURL");
    gVerifyOutputDir = GetFileFromURISpec(verifyDirURL);
    document.testForm.verifyOutputDir.value = gVerifyOutputDir.path;
    
    var dirIndex = 0;
    while (true)    // we'll throw  when we reach a nonexistent pref
    {
      var curDir = GetStringPref("nglayout.debug.testcaseDir" + dirIndex);
      var dirFileSpec = GetFileFromURISpec(curDir);
      gTestcaseDirArray.push(dirFileSpec);
      dirIndex ++;
    }
  }
  catch(e)
  {
  }
  
  RebuildTestDirsSelect();
}

function SaveFormToPrefs()
{
   SaveStringPref("nglayout.debug.testcaseURL", document.testForm.singleTestFileInput.value);
  
  // save prefs
  if (gBaselineOutputDir)
  {
    var baselineDirURL = GetURISpecFromFile(gBaselineOutputDir);
    SaveStringPref("nglayout.debug.baselineDirURL", baselineDirURL);
  }
  
  if (gVerifyOutputDir)
  {
    var verifyDirURL = GetURISpecFromFile(gVerifyOutputDir);
    SaveStringPref("nglayout.debug.verifyDirURL", verifyDirURL);
  }
  
  var dirIndex;
  for (dirIndex = 0; dirIndex < gTestcaseDirArray.length; dirIndex ++)
  {
    var curURL = GetURISpecFromFile(gTestcaseDirArray[dirIndex]);
    SaveStringPref("nglayout.debug.testcaseDir" + dirIndex, curURL);
  }
  try
  {
    // clear prefs for higher indices until we throw
    while (1)
    {
      ClearPref("nglayout.debug.testcaseDir" + dirIndex);
    }
  }
  catch(e)
  {
  }
  
}

function GetURISpecFromFile(inFile)
{
  var ioService = Components.classes["@mozilla.org/network/io-service;1"].getService(Components.interfaces.nsIIOService);
  var fileHandler = ioService.getProtocolHandler("file").QueryInterface(Components.interfaces.nsIFileProtocolHandler);
  return fileHandler.getURLSpecFromFile(inFile);
}

function GetFileFromURISpec(uriSpec)
{
  var ioService = Components.classes["@mozilla.org/network/io-service;1"].getService(Components.interfaces.nsIIOService);
  var fileHandler = ioService.getProtocolHandler("file").QueryInterface(Components.interfaces.nsIFileProtocolHandler);
  return fileHandler.getFileFromURLSpec(uriSpec);
}

function SaveStringPref(inPrefName, inPrefValue)
{
  var prefs = Components.classes["@mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefBranch);
  prefs.setCharPref(inPrefName, inPrefValue);
}

function GetStringPref(inPrefName)
{
  var prefs = Components.classes["@mozilla.org/preferences-service;1"].getService(Components.interfaces.nsIPrefBranch);
  return prefs.getCharPref(inPrefName); 
}

function ClearPref(inPrefName)
{
  var prefs = Components.classes["@mozilla.org/preference