diff -r 000000000000 -r 6474c204b198 toolkit/components/autocomplete/tests/unit/head_autocomplete.js
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/components/autocomplete/tests/unit/head_autocomplete.js	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,192 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
+
+const Cc = Components.classes;
+const Ci = Components.interfaces;
+
+/**
+ * Dummy nsIAutoCompleteInput source that returns
+ * the given list of AutoCompleteSearch names. 
+ * 
+ * Implements only the methods needed for this test.
+ */
+function AutoCompleteInputBase(aSearches) {
+  this.searches = aSearches;
+}
+AutoCompleteInputBase.prototype = {
+ 
+  // Array of AutoCompleteSearch names
+  searches: null,
+  
+  minResultsForPopup: 0,
+  timeout: 10,
+  searchParam: "",
+  textValue: "",
+  disableAutoComplete: false,  
+  completeDefaultIndex: false,
+
+  // Text selection range
+  _selStart: 0,
+  _selEnd: 0,
+  get selectionStart() {
+    return this._selStart;
+  },
+  get selectionEnd() {
+    return this._selEnd;
+  },
+  selectTextRange: function(aStart, aEnd) {
+    this._selStart = aStart;
+    this._selEnd = aEnd;
+  },
+  
+  get searchCount() {
+    return this.searches.length;
+  },
+  
+  getSearchAt: function(aIndex) {
+    return this.searches[aIndex];
+  },
+  
+  onSearchBegin: function() {},
+  onSearchComplete: function() {},
+  
+  popupOpen: false,  
+  
+  popup: { 
+    selectedIndex: 0,
+    invalidate: function() {},
+
+    // nsISupports implementation
+    QueryInterface: XPCOMUtils.generateQI([Ci.nsIAutoCompletePopup])   
+  },
+    
+  // nsISupports implementation
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIAutoCompleteInput])
+}
+
+/** 
+ * nsIAutoCompleteResult implementation
+ */
+function AutoCompleteResultBase(aValues) {
+  this._values = aValues;
+}
+AutoCompleteResultBase.prototype = {
+  
+  // Arrays
+  _values: null,
+  _comments: [],
+  _styles: [],
+  _finalCompleteValues: [],
+
+  searchString: "",
+  searchResult: null,
+  
+  defaultIndex: -1,
+  
+  _typeAheadResult: false,
+  get typeAheadResult() {
+    return this._typeAheadResult;
+  },
+
+  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._finalCompleteValues[aIndex] || this._values[aIndex];
+  },
+
+  removeValueAt: function (aRowIndex, aRemoveFromDb) {},
+
+  // nsISupports implementation
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIAutoCompleteResult])
+}
+
+/** 
+ * nsIAutoCompleteSearch implementation that always returns
+ * the same result set.
+ */
+function AutoCompleteSearchBase(aName, aResult) {
+  this.name = aName;
+  this._result = aResult;
+}
+AutoCompleteSearchBase.prototype = {
+  
+  // Search name. Used by AutoCompleteController
+  name: null,
+
+  // AutoCompleteResult
+  _result: null,
+
+  startSearch: function(aSearchString, 
+                        aSearchParam, 
+                        aPreviousResult, 
+                        aListener) {
+    var result = this._result;
+
+    result.searchResult = Ci.nsIAutoCompleteResult.RESULT_SUCCESS;
+    aListener.onSearchResult(this, result);
+  },
+  
+  stopSearch: function() {},
+
+  // nsISupports implementation
+  QueryInterface: XPCOMUtils.generateQI([Ci.nsIFactory,
+                                         Ci.nsIAutoCompleteSearch]),
+  
+  // 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 cid = Cc["@mozilla.org/uuid-generator;1"].
+            getService(Ci.nsIUUIDGenerator).
+            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);
+}
+