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 /* -*- Mode: Java; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */

 /* vim:set ts=2 sw=2 sts=2 et: */

 /* 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/. */

 /**

  * Unit test for Bug 393191 - AutoComplete crashes if result is null

  */

 /**

  * Dummy nsIAutoCompleteInput source that returns

  * the given list of AutoCompleteSearch names. 

  * 

  * Implements only the methods needed for this test.

  */

 function AutoCompleteInput(aSearches) {

   this.searches = aSearches;

 }

 AutoCompleteInput.prototype = {

   constructor: AutoCompleteInput, 

   // Array of AutoCompleteSearch names

   searches: null,

   minResultsForPopup: 0,

   timeout: 10,

   searchParam: "",

   textValue: "",

   disableAutoComplete: false,  

   completeDefaultIndex: false,

   get searchCount() {

     return this.searches.length;

   },

   getSearchAt: function(aIndex) {

     return this.searches[aIndex];

   },

   onSearchBegin: function() {},

   onSearchComplete: function() {},

   popupOpen: false,  

   popup: { 

     setSelectedIndex: function(aIndex) {},

     invalidate: function() {},

     // nsISupports implementation

     QueryInterface: function(iid) {

       if (iid.equals(Ci.nsISupports) ||

           iid.equals(Ci.nsIAutoCompletePopup))

         return this;

       throw Components.results.NS_ERROR_NO_INTERFACE;

     }    

   },

   // nsISupports implementation

   QueryInterface: function(iid) {

     if (iid.equals(Ci.nsISupports) ||

         iid.equals(Ci.nsIAutoCompleteInput))

       return this;

     throw Components.results.NS_ERROR_NO_INTERFACE;

   }

 }

 /** 

  * nsIAutoCompleteResult implementation

  */

 function AutoCompleteResult(aValues, aComments, aStyles) {

   this._values = aValues;

   this._comments = aComments;

   this._styles = aStyles;

   if (this._values.length > 0) {

     this.searchResult = Ci.nsIAutoCompleteResult.RESULT_SUCCESS;

   } else {

     this.searchResult = Ci.nsIAutoCompleteResult.NOMATCH;

   }

 }

 AutoCompleteResult.prototype = {

   constructor: AutoCompleteResult,

   // Arrays

   _values: null,

   _comments: null,

   _styles: null,

   searchString: "",

   searchResult: null,

   defaultIndex: 0,

   get matchCount() {

     return this._values.length;

   },

   getValueAt: function(aIndex) {

     return this._values[aIndex];

   },

   getLabelAt: function(aIndex) {

     return this.getValueAt(aIndex);

   },

   getCommentAt: function(aIndex) {

     return this._comments[aIndex];

   },

   getStyleAt: function(aIndex) {

     return this._styles[aIndex];

   },

   getImageAt: function(aIndex) {

     return "";

   },

   getFinalCompleteValueAt: function(aIndex) {

     return this.getValueAt(aIndex);

   },

   removeValueAt: function (aRowIndex, aRemoveFromDb) {},

   // nsISupports implementation

   QueryInterface: function(iid) {

     if (iid.equals(Ci.nsISupports) ||

         iid.equals(Ci.nsIAutoCompleteResult))

       return this;

     throw Components.results.NS_ERROR_NO_INTERFACE;

   }  

 }

 /** 

  * nsIAutoCompleteSearch implementation that always returns

  * the same result set.

  */

 function AutoCompleteSearch(aName, aResult) {

   this.name = aName;

 }

 AutoCompleteSearch.prototype = {

   constructor: AutoCompleteSearch,

   // Search name. Used by AutoCompleteController

   name: null,

   // AutoCompleteResult

   _result:null,  

   /**

    * Return the same result set for every search

    */

   startSearch: function(aSearchString, 

                         aSearchParam, 

                         aPreviousResult, 

                         aListener) 

   {

     aListener.onSearchResult(this, this._result);

   },

   stopSearch: function() {},

   // nsISupports implementation

   QueryInterface: function(iid) {

     if (iid.equals(Ci.nsISupports) ||

         iid.equals(Ci.nsIFactory) ||

         iid.equals(Ci.nsIAutoCompleteSearch))

       return this;

     throw Components.results.NS_ERROR_NO_INTERFACE;

   },

   // nsIFactory implementation

   createInstance: function(outer, iid) {

     return this.QueryInterface(iid);

   }

 }

 /** 

  * Helper to register an AutoCompleteSearch with the given name.

  * Allows the AutoCompleteController to find the search.

  */

 function registerAutoCompleteSearch(aSearch) {

   var name = "@mozilla.org/autocomplete/search;1?name=" + aSearch.name;

   var uuidGenerator = Cc["@mozilla.org/uuid-generator;1"].

                       getService(Ci.nsIUUIDGenerator);

   var cid = uuidGenerator.generateUUID();

   var desc = "Test AutoCompleteSearch";

   var componentManager = Components.manager

                                    .QueryInterface(Ci.nsIComponentRegistrar);

   componentManager.registerFactory(cid, desc, name, aSearch);

   // Keep the id on the object so we can unregister later

   aSearch.cid = cid; 

 }

 /** 

  * Helper to unregister an AutoCompleteSearch. 

  */

 function unregisterAutoCompleteSearch(aSearch) {

   var componentManager = Components.manager

                                    .QueryInterface(Ci.nsIComponentRegistrar);  

   componentManager.unregisterFactory(aSearch.cid, aSearch);

 }

 /** 

  * Test AutoComplete with a search that returns a null result

  */

 function run_test() {

   // Make an AutoCompleteSearch that always returns nothing

   var emptySearch = new AutoCompleteSearch("test-empty-search", 

                              new AutoCompleteResult([], [], []));

   // Register search so AutoCompleteController can find them

   registerAutoCompleteSearch(emptySearch);

   var controller = Components.classes["@mozilla.org/autocomplete/controller;1"].

                    getService(Components.interfaces.nsIAutoCompleteController);  

   // Make an AutoCompleteInput that uses our search

   // and confirms results on search complete

   var input = new AutoCompleteInput([emptySearch.name]);

   var numSearchesStarted = 0;

   input.onSearchBegin = function() {

     numSearchesStarted++;

     do_check_eq(numSearchesStarted, 1);

   };

   input.onSearchComplete = function() {

     do_check_eq(numSearchesStarted, 1);

     do_check_eq(controller.searchStatus, 

                 Ci.nsIAutoCompleteController.STATUS_COMPLETE_NO_MATCH);

     do_check_eq(controller.matchCount, 0);

     // Unregister searches

     unregisterAutoCompleteSearch(emptySearch);

     do_test_finished();

   };

   controller.input = input;

   // Search is asynchronous, so don't let the test finish immediately

   do_test_pending();

   controller.startSearch("test");

 }