add useful function and do a try/catch in case there is an erorr

mailnews/base/tests/accountmanager/AccountManagerTest.js

@@ -1,3 +1,23 @@
+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * The contents of this file are subject to the Netscape 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/NPL/
+ * 
+ * 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 Communicator client code, released
+ * March 31, 1998.
+ * 
+ * The Initial Developer of the Original Code is Netscape
+ * Communications Corporation. Portions created by Netscape are
+ * Copyright (C) 1998-1999 Netscape Communications Corporation. All
+ * Rights Reserved.
+ */
+
 function displayAccounts() {
 
   dump("Here come the accounts: \n");
@@ -32,7 +52,13 @@ function arrayDescribe(array, iface, name, describeCallback) {
 
 function describe(object, name) {
   for (var i in object) {
-    var value = object[i];
+    var value;
+    try {
+      value = object[i];
+    } catch (e) {
+      dump("the " + i + " slot of " + object + "returned an error. Please file a bug.\n");
+    }
+      
     if (typeof(object[i]) == "function")
       value = "[function]";
     
@@ -43,3 +69,12 @@ function describe(object, name) {
 function describeIdentity(identity) {
   dump("Additional Identity Info\n");
 }
+
+function nsISupportsArray2JSArray(array, IID) {
+    var result = new Array;
+    var length = array.Count();
+    for (var i=0; i<length; i++) {
+      result[i] = array.GetElement(i).QueryInterface(IID);
+    }
+    return result;
+}