Index: Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb544605d2b97d5d2d0e00953f95c6d11264a8e42
--- Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs	(.../MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs	(.../MacroStabilityInwardsCalculationGroupContextTreeNodeInfoTest.cs)	(revision b544605d2b97d5d2d0e00953f95c6d11264a8e42)
@@ -32,6 +32,7 @@
 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;
@@ -49,7 +50,6 @@
 using Riskeer.MacroStabilityInwards.KernelWrapper.TestUtil.Calculators;
 using Riskeer.MacroStabilityInwards.Primitives;
 using CoreGuiResources = Core.Gui.Properties.Resources;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.MacroStabilityInwards.Plugin.Test.TreeNodeInfos
@@ -859,9 +859,7 @@
 
                 var menuBuilder = 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(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationScenarioContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb544605d2b97d5d2d0e00953f95c6d11264a8e42
--- Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationScenarioContextTreeNodeInfoTest.cs	(.../MacroStabilityInwardsCalculationScenarioContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationScenarioContextTreeNodeInfoTest.cs	(.../MacroStabilityInwardsCalculationScenarioContextTreeNodeInfoTest.cs)	(revision b544605d2b97d5d2d0e00953f95c6d11264a8e42)
@@ -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 log4net.Core;
 using NUnit.Extensions.Forms;
@@ -46,7 +47,6 @@
 using Riskeer.MacroStabilityInwards.Forms.PresentationObjects;
 using Riskeer.MacroStabilityInwards.KernelWrapper.TestUtil.Calculators;
 using Riskeer.MacroStabilityInwards.Primitives;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.MacroStabilityInwards.Plugin.Test.TreeNodeInfos
@@ -431,9 +431,7 @@
                                                                                              failureMechanism,
                                                                                              assessmentSection);
 
-                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);
@@ -548,9 +546,7 @@
                                                                                              failureMechanism,
                                                                                              assessmentSection);
 
-                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/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationsContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb544605d2b97d5d2d0e00953f95c6d11264a8e42
--- Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationsContextTreeNodeInfoTest.cs	(.../MacroStabilityInwardsCalculationsContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/MacroStabilityInwards/test/Riskeer.MacroStabilityInwards.Plugin.Test/TreeNodeInfos/MacroStabilityInwardsCalculationsContextTreeNodeInfoTest.cs	(.../MacroStabilityInwardsCalculationsContextTreeNodeInfoTest.cs)	(revision b544605d2b97d5d2d0e00953f95c6d11264a8e42)
@@ -30,6 +30,7 @@
 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;
@@ -45,7 +46,6 @@
 using Riskeer.MacroStabilityInwards.Forms.PresentationObjects;
 using Riskeer.MacroStabilityInwards.KernelWrapper.TestUtil.Calculators;
 using CoreGuiResources = Core.Gui.Properties.Resources;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.MacroStabilityInwards.Plugin.Test.TreeNodeInfos
@@ -576,9 +576,7 @@
 
                 var menuBuilder = 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(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/TreeNodeInfos/PipingCalculationGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb544605d2b97d5d2d0e00953f95c6d11264a8e42
--- Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/TreeNodeInfos/PipingCalculationGroupContextTreeNodeInfoTest.cs	(.../PipingCalculationGroupContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/TreeNodeInfos/PipingCalculationGroupContextTreeNodeInfoTest.cs	(.../PipingCalculationGroupContextTreeNodeInfoTest.cs)	(revision b544605d2b97d5d2d0e00953f95c6d11264a8e42)
@@ -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;
@@ -60,7 +61,6 @@
 using Riskeer.Piping.Primitives;
 using Riskeer.Piping.Primitives.TestUtil;
 using CoreGuiResources = Core.Gui.Properties.Resources;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.Piping.Plugin.Test.TreeNodeInfos
@@ -1478,9 +1478,7 @@
 
             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/Piping/test/Riskeer.Piping.Plugin.Test/TreeNodeInfos/PipingCalculationsContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb544605d2b97d5d2d0e00953f95c6d11264a8e42
--- Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/TreeNodeInfos/PipingCalculationsContextTreeNodeInfoTest.cs	(.../PipingCalculationsContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/TreeNodeInfos/PipingCalculationsContextTreeNodeInfoTest.cs	(.../PipingCalculationsContextTreeNodeInfoTest.cs)	(revision b544605d2b97d5d2d0e00953f95c6d11264a8e42)
@@ -31,6 +31,7 @@
 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.Piping.Forms.PresentationObjects;
 using Riskeer.Piping.KernelWrapper.TestUtil.SubCalculator;
 using CoreGuiResources = Core.Gui.Properties.Resources;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.Piping.Plugin.Test.TreeNodeInfos
@@ -732,9 +732,7 @@
 
                 var menuBuilder = 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(g => g.MainWindow).Return(mainWindow);
Index: Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/TreeNodeInfos/Probabilistic/ProbabilisticPipingCalculationScenarioContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb544605d2b97d5d2d0e00953f95c6d11264a8e42
--- Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/TreeNodeInfos/Probabilistic/ProbabilisticPipingCalculationScenarioContextTreeNodeInfoTest.cs	(.../ProbabilisticPipingCalculationScenarioContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/TreeNodeInfos/Probabilistic/ProbabilisticPipingCalculationScenarioContextTreeNodeInfoTest.cs	(.../ProbabilisticPipingCalculationScenarioContextTreeNodeInfoTest.cs)	(revision b544605d2b97d5d2d0e00953f95c6d11264a8e42)
@@ -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 log4net.Core;
 using NUnit.Extensions.Forms;
@@ -52,7 +53,6 @@
 using Riskeer.Piping.Forms.PresentationObjects;
 using Riskeer.Piping.Forms.PresentationObjects.Probabilistic;
 using Riskeer.Piping.Primitives;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.Piping.Plugin.Test.TreeNodeInfos.Probabilistic
@@ -881,9 +881,7 @@
                                                                                                          failureMechanism,
                                                                                                          assessmentSection);
 
-                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);
@@ -1002,9 +1000,7 @@
                                                                                                          failureMechanism,
                                                                                                          assessmentSection);
 
-                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/Piping/test/Riskeer.Piping.Plugin.Test/TreeNodeInfos/SemiProbabilistic/SemiProbabilisticPipingCalculationScenarioContextTreeNodeInfoTest.cs
===================================================================
diff -u -r886b86a66f072735567285a3489923186c236c32 -rb544605d2b97d5d2d0e00953f95c6d11264a8e42
--- Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/TreeNodeInfos/SemiProbabilistic/SemiProbabilisticPipingCalculationScenarioContextTreeNodeInfoTest.cs	(.../SemiProbabilisticPipingCalculationScenarioContextTreeNodeInfoTest.cs)	(revision 886b86a66f072735567285a3489923186c236c32)
+++ Riskeer/Piping/test/Riskeer.Piping.Plugin.Test/TreeNodeInfos/SemiProbabilistic/SemiProbabilisticPipingCalculationScenarioContextTreeNodeInfoTest.cs	(.../SemiProbabilisticPipingCalculationScenarioContextTreeNodeInfoTest.cs)	(revision b544605d2b97d5d2d0e00953f95c6d11264a8e42)
@@ -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 log4net.Core;
 using NUnit.Extensions.Forms;
@@ -50,7 +51,6 @@
 using Riskeer.Piping.Forms.PresentationObjects.SemiProbabilistic;
 using Riskeer.Piping.KernelWrapper.TestUtil.SubCalculator;
 using Riskeer.Piping.Primitives;
-using CoreGuiTestUtilResources = Core.Gui.TestUtil.Properties.Resources;
 using RiskeerCommonFormsResources = Riskeer.Common.Forms.Properties.Resources;
 
 namespace Riskeer.Piping.Plugin.Test.TreeNodeInfos.SemiProbabilistic
@@ -829,9 +829,7 @@
                                                                                                              failureMechanism,
                                                                                                              assessmentSection);
 
-                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);
@@ -956,9 +954,7 @@
                                                                                                              failureMechanism,
                                                                                                              assessmentSection);
 
-                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);