diff --git a/lib/ace/view/window_view_mock.js b/lib/ace/view/window_view_mock.js
index 66d82e6f..b215a449 100644
--- a/lib/ace/view/window_view_mock.js
+++ b/lib/ace/view/window_view_mock.js
@@ -38,6 +38,8 @@
 
 define(function(require, exports, module) {
 
+var Window = require("ace/model/window").Window;
+
 exports.MockRenderer = exports.WindowViewMock = WindowViewMock = function(visibleRowCount) {
     this.container = document.createElement("div");
     this.visibleRowCount = visibleRowCount || 20;
@@ -49,6 +51,8 @@ exports.MockRenderer = exports.WindowViewMock = WindowViewMock = function(visibl
     };
 
     this.isWindowViewMock = true;
+    
+    this.model = new Window();
 };
 
 
@@ -127,38 +131,28 @@ WindowViewMock.prototype.getScrollTopRow = function() {
   return this.layerConfig.firstVisibleRow;
 };
 
-WindowViewMock.prototype.draw = function() {
-};
-
-WindowViewMock.prototype.updateLines = function(startRow, endRow) {
-};
-
-WindowViewMock.prototype.updateBackMarkers = function() {
-};
-
-WindowViewMock.prototype.updateFrontMarkers = function() {
-};
-
-WindowViewMock.prototype.setBreakpoints = function() {
-};
-
-WindowViewMock.prototype.onResize = function() {
-};
-
-WindowViewMock.prototype.updateFull = function() {
-};
-
-WindowViewMock.prototype.updateText = function() {
-};
-
-WindowViewMock.prototype.showCursor = function() {
-};
-
-WindowViewMock.prototype.visualizeFocus = function() {
-};
-
-WindowViewMock.prototype.setAnnotations = function() {
-};
+[
+    "draw",
+    "updateLines",
+    "updateBackMarkers",
+    "updateFrontMarkers",
+    "updateShowInvisibles",
+    "updatePrintMargin",
+    "updateShowGutter",
+    "updatePadding",
+    "updateHorizScroll",
+    "updateTheme",
+    "updateCharacterSize",
+    "setBreakpoints",
+    "onResize",
+    "updateFull",
+    "updateText",
+    "showCursor",
+    "visualizeFocus",
+    "setAnnotations"
+].forEach(function(name) {
+    WindowViewMock.prototype[name] = function() {};
+})
 
 WindowViewMock.prototype.textToScreenCoordinates = function() {
     return {