Index: Riskeer/DuneErosion/test/Riskeer.DuneErosion.Plugin.Test/TreeNodeInfos/DuneErosionCalculationsContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/DuneErosion/test/Riskeer.DuneErosion.Plugin.Test/TreeNodeInfos/DuneErosionCalculationsContextTreeNodeInfoTest.cs	(.../DuneErosionCalculationsContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/DuneErosion/test/Riskeer.DuneErosion.Plugin.Test/TreeNodeInfos/DuneErosionCalculationsContextTreeNodeInfoTest.cs	(.../DuneErosionCalculationsContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -29,6 +29,7 @@
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
 using Core.Gui.Forms.ViewHost;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Framework;
 using Rhino.Mocks;
@@ -45,7 +46,6 @@
 using Riskeer.HydraRing.Calculation.Calculator.Factory;
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.DuneErosion.Plugin.Test.TreeNodeInfos
@@ -284,9 +284,7 @@
             using (var treeViewControl = new TreeViewControl())
             {
                 var gui = mocksRepository.Stub<IGui>();
-                var mainWindow = mocksRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocksRepository);
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
                 gui.Stub(g => g.ProjectOpened += null).IgnoreArguments();
                 gui.Stub(g => g.ProjectOpened -= null).IgnoreArguments();
Index: Riskeer/DuneErosion/test/Riskeer.DuneErosion.Plugin.Test/TreeNodeInfos/DuneLocationCalculationsContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/DuneErosion/test/Riskeer.DuneErosion.Plugin.Test/TreeNodeInfos/DuneLocationCalculationsContextTreeNodeInfoTest.cs	(.../DuneLocationCalculationsContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/DuneErosion/test/Riskeer.DuneErosion.Plugin.Test/TreeNodeInfos/DuneLocationCalculationsContextTreeNodeInfoTest.cs	(.../DuneLocationCalculationsContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -19,7 +19,6 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
-using System;
 using System.Collections.Generic;
 using System.Drawing;
 using System.IO;
@@ -34,6 +33,7 @@
 using Core.Gui;
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Framework;
 using Rhino.Mocks;
@@ -48,7 +48,6 @@
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.Data.Input.Hydraulics;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.DuneErosion.Plugin.Test.TreeNodeInfos
@@ -393,9 +392,7 @@
 
                 var builder = new CustomItemsOnlyContextMenuBuilder();
 
-                var mainWindow = mocks.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocks);
                 
                 var gui = mocks.Stub<IGui>();
                 gui.Stub(cmp => cmp.Get(context, treeViewControl)).Return(builder);
@@ -496,9 +493,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mocks.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocks);
                 
                 var gui = mocks.Stub<IGui>();
                 gui.Stub(cmp => cmp.Get(context, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
@@ -587,9 +582,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mocks.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocks);
                 
                 var gui = mocks.Stub<IGui>();
                 gui.Stub(cmp => cmp.Get(context, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
@@ -677,9 +670,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mocks.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocks);
                 
                 var gui = mocks.Stub<IGui>();
                 gui.Stub(cmp => cmp.Get(context, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
Index: Riskeer/DuneErosion/test/Riskeer.DuneErosion.Plugin.Test/TreeNodeInfos/DuneLocationCalculationsGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/DuneErosion/test/Riskeer.DuneErosion.Plugin.Test/TreeNodeInfos/DuneLocationCalculationsGroupContextTreeNodeInfoTest.cs	(.../DuneLocationCalculationsGroupContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/DuneErosion/test/Riskeer.DuneErosion.Plugin.Test/TreeNodeInfos/DuneLocationCalculationsGroupContextTreeNodeInfoTest.cs	(.../DuneLocationCalculationsGroupContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -31,6 +31,7 @@
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
 using Core.Gui.Forms.ViewHost;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Framework;
 using Rhino.Mocks;
@@ -45,7 +46,6 @@
 using Riskeer.HydraRing.Calculation.Calculator.Factory;
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.DuneErosion.Plugin.Test.TreeNodeInfos
@@ -434,9 +434,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mocks.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocks);
                 
                 var gui = mocks.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -32,6 +32,7 @@
 using Core.Gui;
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -50,7 +51,6 @@
 using Riskeer.HydraRing.Calculation.Calculator.Factory;
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.GrassCoverErosionInwards.Plugin.Test.TreeNodeInfos
@@ -786,9 +786,7 @@
         public void GivenValidCalculation_WhenCalculatingFromContextMenu_ThenOutputSetLogMessagesAddedAndUpdateObserver()
         {
             // Given
-            var mainWindow = mocks.Stub<IMainWindow>();
-            mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-            mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+            IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocks);
 
             var observer = mocks.StrictMock<IObserver>();
             observer.Expect(o => o.UpdateObserver());
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationGroupContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsCalculationGroupContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationGroupContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsCalculationGroupContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -34,6 +34,7 @@
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
 using Core.Gui.Plugin;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -53,7 +54,6 @@
 using Riskeer.HydraRing.Calculation.Calculator.Factory;
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 using GrassCoverErosionInwardsPluginResources = Riskeer.GrassCoverErosionInwards.Plugin.Properties.Resources;
 
@@ -1570,9 +1570,7 @@
         public void ContextMenuStrip_ClickOnCalculateAllItem_ScheduleAllChildCalculations()
         {
             // Setup
-            var mainWindow = mocks.Stub<IMainWindow>();
-            mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-            mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+            IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocks);
             var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
 
             var failureMechanism = new TestGrassCoverErosionInwardsFailureMechanism();
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationsContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationsContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsCalculationsContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationsContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsCalculationsContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -31,6 +31,7 @@
 using Core.Gui;
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -48,7 +49,6 @@
 using Riskeer.HydraRing.Calculation.Calculator.Factory;
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.GrassCoverErosionInwards.Plugin.Test.TreeNodeInfos
@@ -479,9 +479,7 @@
         public void ContextMenuStrip_ClickOnCalculateAllItem_ScheduleAllChildCalculations()
         {
             // Setup
-            var mainWindow = mocksRepository.Stub<IMainWindow>();
-            mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-            mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+            IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocksRepository);
             var menuBuilder = new CustomItemsOnlyContextMenuBuilder();
 
             var failureMechanism = new TestGrassCoverErosionInwardsFailureMechanism();
Index: Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsCalculationsContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsCalculationsContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsCalculationsContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsCalculationsContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsCalculationsContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -32,6 +32,7 @@
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
 using Core.Gui.Forms.ViewHost;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Framework;
 using Rhino.Mocks;
@@ -50,7 +51,6 @@
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
 using Riskeer.Revetment.Data;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.GrassCoverErosionOutwards.Plugin.Test.TreeNodeInfos
@@ -335,9 +335,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mocks.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocks);
 
                 var gui = mocks.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsDesignWaterLevelCalculationsContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsDesignWaterLevelCalculationsContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsDesignWaterLevelCalculationsContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsDesignWaterLevelCalculationsContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsDesignWaterLevelCalculationsContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -33,6 +33,7 @@
 using Core.Gui.Commands;
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -48,7 +49,6 @@
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.Data.Input.Hydraulics;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.GrassCoverErosionOutwards.Plugin.Test.TreeNodeInfos
@@ -529,9 +529,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
@@ -609,9 +607,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
@@ -687,9 +683,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
@@ -762,9 +756,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsDesignWaterLevelCalculationsGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsDesignWaterLevelCalculationsGroupContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsDesignWaterLevelCalculationsGroupContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsDesignWaterLevelCalculationsGroupContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsDesignWaterLevelCalculationsGroupContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -33,6 +33,7 @@
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
 using Core.Gui.Forms.ViewHost;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -51,7 +52,6 @@
 using Riskeer.HydraRing.Calculation.Calculator.Factory;
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.GrassCoverErosionOutwards.Plugin.Test.TreeNodeInfos
@@ -512,9 +512,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsHydraulicBoundaryDatabaseContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsHydraulicBoundaryDatabaseContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsHydraulicBoundaryDatabaseContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsHydraulicBoundaryDatabaseContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsHydraulicBoundaryDatabaseContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -35,6 +35,7 @@
 using Core.Gui.Forms.ViewHost;
 using Core.Gui.TestUtil.ContextMenu;
 using Core.Common.TestUtil;
+using Core.Gui.TestUtil;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
 using Rhino.Mocks;
@@ -52,7 +53,6 @@
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
 using Riskeer.Revetment.Data;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.GrassCoverErosionOutwards.Plugin.Test.TreeNodeInfos
@@ -361,9 +361,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsWaveConditionsCalculationContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsWaveConditionsCalculationContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsWaveConditionsCalculationContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -33,6 +33,7 @@
 using Core.Gui.Forms.Main;
 using Core.Gui.TestUtil.ContextMenu;
 using Core.Common.TestUtil;
+using Core.Gui.TestUtil;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
 using Rhino.Mocks;
@@ -51,7 +52,6 @@
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
 using Riskeer.Revetment.Data;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.GrassCoverErosionOutwards.Plugin.Test.TreeNodeInfos
@@ -1531,13 +1531,11 @@
                                                          context,
                                                          treeViewControl);
 
-                var mainWindow = mocks.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocks);
 
                 var gui = mocks.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
-                gui.Stub(g => g.Get(context, treeViewControl)).Return(menuBuilder);;
+                gui.Stub(g => g.Get(context, treeViewControl)).Return(menuBuilder);
 
                 var calculatorFactory = mocks.Stub<IHydraRingCalculatorFactory>();
                 calculatorFactory.Stub(cf => cf.CreateWaveConditionsCosineCalculator(Arg<HydraRingCalculationSettings>.Is.NotNull))
Index: Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsWaveConditionsCalculationGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsWaveConditionsCalculationGroupContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationGroupContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsWaveConditionsCalculationGroupContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationGroupContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -34,6 +34,7 @@
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
 using Core.Gui.Plugin;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -54,7 +55,6 @@
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
 using Riskeer.Revetment.Data;
 using CoreGuiResources = Core.Gui.Properties.Resources;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.GrassCoverErosionOutwards.Plugin.Test.TreeNodeInfos
@@ -1199,9 +1199,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mocks.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocks);
 
                 gui.Stub(cmp => cmp.Get(nodeData, treeViewControl)).Return(menuBuilder);
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsWaveHeightCalculationsContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsWaveHeightCalculationsContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsWaveHeightCalculationsContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsWaveHeightCalculationsContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsWaveHeightCalculationsContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -33,6 +33,7 @@
 using Core.Gui.Commands;
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -48,7 +49,6 @@
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.Data.Input.Hydraulics;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.GrassCoverErosionOutwards.Plugin.Test.TreeNodeInfos
@@ -521,9 +521,7 @@
                 {
                     TreeNodeInfo info = GetInfo(plugin);
 
-                    var mainWindow = mockRepository.Stub<IMainWindow>();
-                    mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                    mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                    IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                     var gui = mockRepository.Stub<IGui>();
                     gui.Stub(g => g.MainWindow).Return(mainWindow);
@@ -590,9 +588,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
@@ -666,9 +662,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
@@ -742,9 +736,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsWaveHeightCalculationsGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsWaveHeightCalculationsGroupContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsWaveHeightCalculationsGroupContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/GrassCoverErosionOutwards/test/Riskeer.GrassCoverErosionOutwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionOutwardsWaveHeightCalculationsGroupContextTreeNodeInfoTest.cs	(.../GrassCoverErosionOutwardsWaveHeightCalculationsGroupContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -33,6 +33,7 @@
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
 using Core.Gui.Forms.ViewHost;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -51,7 +52,6 @@
 using Riskeer.HydraRing.Calculation.Calculator.Factory;
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.GrassCoverErosionOutwards.Plugin.Test.TreeNodeInfos
@@ -512,9 +512,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/HeightStructures/test/Riskeer.HeightStructures.Plugin.Test/TreeNodeInfos/HeightStructuresCalculationGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/HeightStructures/test/Riskeer.HeightStructures.Plugin.Test/TreeNodeInfos/HeightStructuresCalculationGroupContextTreeNodeInfoTest.cs	(.../HeightStructuresCalculationGroupContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/HeightStructures/test/Riskeer.HeightStructures.Plugin.Test/TreeNodeInfos/HeightStructuresCalculationGroupContextTreeNodeInfoTest.cs	(.../HeightStructuresCalculationGroupContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -32,6 +32,7 @@
 using Core.Gui.Commands;
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -52,7 +53,6 @@
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.Data.Input.Structures;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.HeightStructures.Plugin.Test.TreeNodeInfos
@@ -1129,9 +1129,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mocks.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocks);
                 
                 gui.Stub(g => g.Get(groupContext, treeViewControl)).Return(menuBuilder);
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/HeightStructures/test/Riskeer.HeightStructures.Plugin.Test/TreeNodeInfos/HeightStructuresCalculationScenarioContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/HeightStructures/test/Riskeer.HeightStructures.Plugin.Test/TreeNodeInfos/HeightStructuresCalculationScenarioContextTreeNodeInfoTest.cs	(.../HeightStructuresCalculationScenarioContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/HeightStructures/test/Riskeer.HeightStructures.Plugin.Test/TreeNodeInfos/HeightStructuresCalculationScenarioContextTreeNodeInfoTest.cs	(.../HeightStructuresCalculationScenarioContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -30,6 +30,7 @@
 using Core.Gui;
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -49,7 +50,6 @@
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.Data.Input.Structures;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.HeightStructures.Plugin.Test.TreeNodeInfos
@@ -1091,9 +1091,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mocks.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocks);
 
                 var gui = mocks.Stub<IGui>();
                 gui.Stub(g => g.Get(calculationContext, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
Index: Riskeer/HeightStructures/test/Riskeer.HeightStructures.Plugin.Test/TreeNodeInfos/HeightStructuresCalculationsContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/HeightStructures/test/Riskeer.HeightStructures.Plugin.Test/TreeNodeInfos/HeightStructuresCalculationsContextTreeNodeInfoTest.cs	(.../HeightStructuresCalculationsContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/HeightStructures/test/Riskeer.HeightStructures.Plugin.Test/TreeNodeInfos/HeightStructuresCalculationsContextTreeNodeInfoTest.cs	(.../HeightStructuresCalculationsContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -31,6 +31,7 @@
 using Core.Gui;
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -50,7 +51,6 @@
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.Data.Input.Structures;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.HeightStructures.Plugin.Test.TreeNodeInfos
@@ -520,9 +520,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mocksRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocksRepository);
 
                 var gui = mocksRepository.Stub<IGui>();
                 gui.Stub(g => g.Get(context, treeViewControl)).Return(menuBuilder);
Index: Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/DesignWaterLevelCalculationsContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/DesignWaterLevelCalculationsContextTreeNodeInfoTest.cs	(.../DesignWaterLevelCalculationsContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/DesignWaterLevelCalculationsContextTreeNodeInfoTest.cs	(.../DesignWaterLevelCalculationsContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -35,6 +35,7 @@
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
 using Core.Gui.Forms.ViewHost;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -50,7 +51,6 @@
 using Riskeer.HydraRing.Calculation.Data.Input.Hydraulics;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
 using Riskeer.Integration.Data;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.Integration.Plugin.Test.TreeNodeInfos
@@ -510,9 +510,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
@@ -600,9 +598,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
@@ -689,9 +685,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
@@ -772,9 +766,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/DesignWaterLevelCalculationsGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/DesignWaterLevelCalculationsGroupContextTreeNodeInfoTest.cs	(.../DesignWaterLevelCalculationsGroupContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/DesignWaterLevelCalculationsGroupContextTreeNodeInfoTest.cs	(.../DesignWaterLevelCalculationsGroupContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -35,6 +35,7 @@
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
 using Core.Gui.Forms.ViewHost;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -50,7 +51,6 @@
 using Riskeer.HydraRing.Calculation.Calculator.Factory;
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.Integration.Plugin.Test.TreeNodeInfos
@@ -453,9 +453,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/HydraulicBoundaryDatabaseContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/HydraulicBoundaryDatabaseContextTreeNodeInfoTest.cs	(.../HydraulicBoundaryDatabaseContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/HydraulicBoundaryDatabaseContextTreeNodeInfoTest.cs	(.../HydraulicBoundaryDatabaseContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -36,6 +36,7 @@
 using Core.Gui.Forms.Main;
 using Core.Gui.Forms.ViewHost;
 using Core.Gui.Plugin;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -52,7 +53,6 @@
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
 using Riskeer.Integration.Data;
 using Riskeer.Integration.Forms.PresentationObjects;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.Integration.Plugin.Test.TreeNodeInfos
@@ -556,9 +556,7 @@
             using (var treeViewControl = new TreeViewControl())
             using (var plugin = new RiskeerPlugin())
             {
-                var mainWindow = mocks.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mocks);
 
                 var gui = mocks.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/WaveHeightCalculationsContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/WaveHeightCalculationsContextTreeNodeInfoTest.cs	(.../WaveHeightCalculationsContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/WaveHeightCalculationsContextTreeNodeInfoTest.cs	(.../WaveHeightCalculationsContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -35,6 +35,7 @@
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
 using Core.Gui.Forms.ViewHost;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -50,7 +51,6 @@
 using Riskeer.HydraRing.Calculation.Data.Input.Hydraulics;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
 using Riskeer.Integration.Data;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.Integration.Plugin.Test.TreeNodeInfos
@@ -510,16 +510,14 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
                 gui.Stub(g => g.ProjectOpened += null).IgnoreArguments();
                 gui.Stub(g => g.ProjectOpened -= null).IgnoreArguments();
                 gui.Stub(cmp => cmp.Get(context, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
-                ;
+
                 gui.Stub(g => g.DocumentViewController).Return(mockRepository.Stub<IDocumentViewController>());
                 gui.Stub(g => g.ViewCommands).Return(mockRepository.Stub<IViewCommands>());
                 gui.Stub(g => g.ProjectStore).Return(mockRepository.Stub<IStoreProject>());
@@ -601,9 +599,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
@@ -690,9 +686,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
@@ -775,9 +769,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/WaveHeightCalculationsGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb0899d90d287d9e53b52b7573a0c0fd66120fa16
--- Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/WaveHeightCalculationsGroupContextTreeNodeInfoTest.cs	(.../WaveHeightCalculationsGroupContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/Integration/test/Riskeer.Integration.Plugin.Test/TreeNodeInfos/WaveHeightCalculationsGroupContextTreeNodeInfoTest.cs	(.../WaveHeightCalculationsGroupContextTreeNodeInfoTest.cs)	(revision b0899d90d287d9e53b52b7573a0c0fd66120fa16)
@@ -35,6 +35,7 @@
 using Core.Gui.ContextMenu;
 using Core.Gui.Forms.Main;
 using Core.Gui.Forms.ViewHost;
+using Core.Gui.TestUtil;
 using Core.Gui.TestUtil.ContextMenu;
 using NUnit.Extensions.Forms;
 using NUnit.Framework;
@@ -50,7 +51,6 @@
 using Riskeer.HydraRing.Calculation.Calculator.Factory;
 using Riskeer.HydraRing.Calculation.Data.Input;
 using Riskeer.HydraRing.Calculation.TestUtil.Calculator;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.Integration.Plugin.Test.TreeNodeInfos
@@ -453,9 +453,7 @@
 
             using (var treeViewControl = new TreeViewControl())
             {
-                var mainWindow = mockRepository.Stub<IMainWindow>();
-                mainWindow.Stub(mw => mw.ApplicationIcon).Return(CoreGuiTestUtilResources.TestIcon);
-                mainWindow.Stub(mw => mw.Handle).Return(IntPtr.Zero);
+                IMainWindow mainWindow = MainWindowTestHelper.CreateMainWindowStub(mockRepository);
 
                 var gui = mockRepository.Stub<IGui>();
                 gui.Stub(g => g.MainWindow).Return(mainWindow);