Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Integration.Test/Ringtoets.WaveImpactAsphaltCover.Integration.Test.csproj
===================================================================
diff -u -r08b3bcba439831d547684b194ecdf903f2519700 -r9633ab5f0a64cc0d7a285bdaeb7756c3aa9bdc35
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Integration.Test/Ringtoets.WaveImpactAsphaltCover.Integration.Test.csproj	(.../Ringtoets.WaveImpactAsphaltCover.Integration.Test.csproj)	(revision 08b3bcba439831d547684b194ecdf903f2519700)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Integration.Test/Ringtoets.WaveImpactAsphaltCover.Integration.Test.csproj	(.../Ringtoets.WaveImpactAsphaltCover.Integration.Test.csproj)	(revision 9633ab5f0a64cc0d7a285bdaeb7756c3aa9bdc35)
@@ -42,6 +42,10 @@
       <HintPath>..\..\..\..\packages\NUnit.3.6.0\lib\net40\nunit.framework.dll</HintPath>
       <Private>True</Private>
     </Reference>
+    <Reference Include="Rhino.Mocks, Version=3.6.0.0, Culture=neutral, PublicKeyToken=0b3305902db7183f, processorArchitecture=MSIL">
+      <HintPath>..\..\..\..\packages\RhinoMocks.3.6.1\lib\net\Rhino.Mocks.dll</HintPath>
+      <Private>True</Private>
+    </Reference>
     <Reference Include="System" />
     <Reference Include="System.Core" />
   </ItemGroup>
Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Integration.Test/WaveImpactAsphaltCoverWaveConditionsCalculationActivityIntegrationTest.cs
===================================================================
diff -u -r08d25a2d4cd349395730ef39d3abf2cc51c30508 -r9633ab5f0a64cc0d7a285bdaeb7756c3aa9bdc35
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Integration.Test/WaveImpactAsphaltCoverWaveConditionsCalculationActivityIntegrationTest.cs	(.../WaveImpactAsphaltCoverWaveConditionsCalculationActivityIntegrationTest.cs)	(revision 08d25a2d4cd349395730ef39d3abf2cc51c30508)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Integration.Test/WaveImpactAsphaltCoverWaveConditionsCalculationActivityIntegrationTest.cs	(.../WaveImpactAsphaltCoverWaveConditionsCalculationActivityIntegrationTest.cs)	(revision 9633ab5f0a64cc0d7a285bdaeb7756c3aa9bdc35)
@@ -27,6 +27,7 @@
 using Core.Common.Base.Service;
 using Core.Common.TestUtil;
 using NUnit.Framework;
+using Rhino.Mocks;
 using Ringtoets.Common.Data.AssessmentSection;
 using Ringtoets.Common.Data.TestUtil;
 using Ringtoets.Common.IO.FileImporters;
@@ -80,7 +81,14 @@
                                                                                        assessmentSection.WaveImpactAsphaltCover,
                                                                                        assessmentSection);
 
-            using (new HydraRingCalculatorFactoryConfig())
+            int calculators = calculation.InputParameters.WaterLevels.Count();
+
+            var mockRepository = new MockRepository();
+            var calculatorFactory = mockRepository.Stub<IHydraRingCalculatorFactory>();
+            calculatorFactory.Expect(cf => cf.CreateWaveConditionsCosineCalculator(testDataPath)).Return(new TestWaveConditionsCosineCalculator()).Repeat.Times(calculators);
+            mockRepository.ReplayAll();
+
+            using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
             {
                 // Call
                 Action call = () => activity.Run();
@@ -90,12 +98,13 @@
                 {
                     string[] msgs = messages.ToArray();
                     Assert.AreEqual(3, msgs.Length);
-                    StringAssert.StartsWith(string.Format("Validatie van '{0}' gestart om: ", calculation.Name), msgs[0]);
-                    Assert.AreEqual(string.Format("Validatie mislukt: Fout bij het lezen van bestand '{0}': het bestand bestaat niet.", testFilePath), msgs[1]);
-                    StringAssert.StartsWith(string.Format("Validatie van '{0}' beëindigd om: ", calculation.Name), msgs[2]);
+                    StringAssert.StartsWith($"Validatie van '{calculation.Name}' gestart om: ", msgs[0]);
+                    Assert.AreEqual($"Validatie mislukt: Fout bij het lezen van bestand '{testFilePath}': het bestand bestaat niet.", msgs[1]);
+                    StringAssert.StartsWith($"Validatie van '{calculation.Name}' beëindigd om: ", msgs[2]);
                 });
                 Assert.AreEqual(ActivityState.Failed, activity.State);
             }
+            mockRepository.VerifyAll();
         }
 
         [Test]
@@ -112,7 +121,14 @@
                                                                                        assessmentSection.WaveImpactAsphaltCover,
                                                                                        assessmentSection);
 
-            using (new HydraRingCalculatorFactoryConfig())
+            int calculators = calculation.InputParameters.WaterLevels.Count();
+
+            var mockRepository = new MockRepository();
+            var calculatorFactory = mockRepository.Stub<IHydraRingCalculatorFactory>();
+            calculatorFactory.Expect(cf => cf.CreateWaveConditionsCosineCalculator(testDataPath)).Return(new TestWaveConditionsCosineCalculator()).Repeat.Times(calculators);
+            mockRepository.ReplayAll();
+
+            using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
             {
                 var progessTexts = new List<string>();
                 activity.ProgressChanged += (sender, args) => { progessTexts.Add(activity.ProgressText); };
@@ -124,10 +140,11 @@
                 RoundedDouble[] waterLevels = calculation.InputParameters.WaterLevels.ToArray();
                 for (var i = 0; i < waterLevels.Length; i++)
                 {
-                    string text = string.Format("Stap {0} van {1} | Waterstand '{2}' berekenen.", i + 1, waterLevels.Length, waterLevels[i]);
+                    string text = $"Stap {i + 1} van {waterLevels.Length} | Waterstand '{waterLevels[i]}' berekenen.";
                     Assert.AreEqual(text, progessTexts[i]);
                 }
             }
+            mockRepository.VerifyAll();
         }
 
         [Test]
@@ -144,13 +161,20 @@
                                                                                        assessmentSection.WaveImpactAsphaltCover,
                                                                                        assessmentSection);
 
-            using (new HydraRingCalculatorFactoryConfig())
+            var testWaveConditionsCosineCalculator = new TestWaveConditionsCosineCalculator();
+            int calculators = calculation.InputParameters.WaterLevels.Count();
+
+            var mockRepository = new MockRepository();
+            var calculatorFactory = mockRepository.Stub<IHydraRingCalculatorFactory>();
+            calculatorFactory.Expect(cf => cf.CreateWaveConditionsCosineCalculator(testDataPath)).Return(testWaveConditionsCosineCalculator).Repeat.Times(calculators);
+            mockRepository.ReplayAll();
+
+            using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
             {
                 // Call
                 activity.Run();
 
                 // Assert
-                TestWaveConditionsCosineCalculator testWaveConditionsCosineCalculator = ((TestHydraRingCalculatorFactory) HydraRingCalculatorFactory.Instance).WaveConditionsCosineCalculator;
                 WaveConditionsCosineCalculationInput[] testWaveConditionsInputs = testWaveConditionsCosineCalculator.ReceivedInputs.ToArray();
                 Assert.AreEqual(3, testWaveConditionsInputs.Length);
 
@@ -172,9 +196,10 @@
                                                                                  generalInput.C);
 
                     HydraRingDataEqualityHelper.AreEqual(expectedInput, actualInput);
-                    Assert.AreEqual(testDataPath, testWaveConditionsCosineCalculator.HydraulicBoundaryDatabaseDirectory);
                 }
             }
+
+            mockRepository.VerifyAll();
         }
 
         [Test]
@@ -191,7 +216,12 @@
                                                                                        assessmentSection.WaveImpactAsphaltCover,
                                                                                        assessmentSection);
 
-            using (new HydraRingCalculatorFactoryConfig())
+            var mockRepository = new MockRepository();
+            var calculatorFactory = mockRepository.Stub<IHydraRingCalculatorFactory>();
+            calculatorFactory.Expect(cf => cf.CreateWaveConditionsCosineCalculator(testDataPath)).Return(new TestWaveConditionsCosineCalculator());
+            mockRepository.ReplayAll();
+
+            using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
             {
                 activity.ProgressChanged += (sender, args) =>
                 {
@@ -209,17 +239,19 @@
                     RoundedDouble firstWaterLevel = calculation.InputParameters.WaterLevels.First();
 
                     Assert.AreEqual(7, msgs.Length);
-                    StringAssert.StartsWith(string.Format("Validatie van '{0}' gestart om: ", calculation.Name), msgs[0]);
-                    StringAssert.StartsWith(string.Format("Validatie van '{0}' beëindigd om: ", calculation.Name), msgs[1]);
-                    StringAssert.StartsWith(string.Format("Berekening van '{0}' gestart om: ", calculation.Name), msgs[2]);
-                    Assert.AreEqual(string.Format("Berekening '{0}' voor waterstand '{1}' gestart.", calculation.Name, firstWaterLevel), msgs[3]);
+                    StringAssert.StartsWith($"Validatie van '{calculation.Name}' gestart om: ", msgs[0]);
+                    StringAssert.StartsWith($"Validatie van '{calculation.Name}' beëindigd om: ", msgs[1]);
+                    StringAssert.StartsWith($"Berekening van '{calculation.Name}' gestart om: ", msgs[2]);
+                    Assert.AreEqual($"Berekening '{calculation.Name}' voor waterstand '{firstWaterLevel}' gestart.", msgs[3]);
                     StringAssert.StartsWith("Golfcondities berekening is uitgevoerd op de tijdelijke locatie", msgs[4]);
-                    Assert.AreEqual(string.Format("Berekening '{0}' voor waterstand '{1}' beëindigd.", calculation.Name, firstWaterLevel), msgs[5]);
-                    StringAssert.StartsWith(string.Format("Berekening van '{0}' beëindigd om: ", calculation.Name), msgs[6]);
+                    Assert.AreEqual($"Berekening '{calculation.Name}' voor waterstand '{firstWaterLevel}' beëindigd.", msgs[5]);
+                    StringAssert.StartsWith($"Berekening van '{calculation.Name}' beëindigd om: ", msgs[6]);
                 });
 
                 Assert.AreEqual(ActivityState.Canceled, activity.State);
             }
+
+            mockRepository.VerifyAll();
         }
 
         [Test]
@@ -236,17 +268,26 @@
                                                                                        assessmentSection.WaveImpactAsphaltCover,
                                                                                        assessmentSection);
 
-            using (new HydraRingCalculatorFactoryConfig())
+            var testWaveConditionsCosineCalculator = new TestWaveConditionsCosineCalculator
             {
-                TestWaveConditionsCosineCalculator calculator = ((TestHydraRingCalculatorFactory) HydraRingCalculatorFactory.Instance).WaveConditionsCosineCalculator;
-                calculator.EndInFailure = true;
+                EndInFailure = true
+            };
+            int calculators = calculation.InputParameters.WaterLevels.Count();
 
+            var mockRepository = new MockRepository();
+            var calculatorFactory = mockRepository.Stub<IHydraRingCalculatorFactory>();
+            calculatorFactory.Expect(cf => cf.CreateWaveConditionsCosineCalculator(testDataPath)).Return(testWaveConditionsCosineCalculator).Repeat.Times(calculators);
+            mockRepository.ReplayAll();
+
+            using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
+            {
                 // Call
                 activity.Run();
 
                 // Assert
                 Assert.IsNull(calculation.Output);
             }
+            mockRepository.VerifyAll();
         }
 
         [Test]
@@ -267,19 +308,29 @@
 
             WaveImpactAsphaltCoverWaveConditionsCalculation calculation = GetValidCalculation(assessmentSection);
 
-            var activity = new WaveImpactAsphaltCoverWaveConditionsCalculationActivity(calculation, testDataPath, failureMechanism, assessmentSection);
-            using (new HydraRingCalculatorFactoryConfig())
+            int calculators = calculation.InputParameters.WaterLevels.Count();
+
+            var mockRepository = new MockRepository();
+            var calculatorFactory = mockRepository.Stub<IHydraRingCalculatorFactory>();
+            var testWaveConditionsCosineCalculator = new TestWaveConditionsCosineCalculator
             {
-                TestWaveConditionsCosineCalculator calculator = ((TestHydraRingCalculatorFactory) HydraRingCalculatorFactory.Instance).WaveConditionsCosineCalculator;
-                calculator.EndInFailure = endInFailure;
-                calculator.LastErrorFileContent = lastErrorFileContent;
+                EndInFailure = endInFailure,
+                LastErrorFileContent = lastErrorFileContent
+            };
+            calculatorFactory.Expect(cf => cf.CreateWaveConditionsCosineCalculator(testDataPath)).Return(testWaveConditionsCosineCalculator).Repeat.Times(calculators);
+            mockRepository.ReplayAll();
 
+            var activity = new WaveImpactAsphaltCoverWaveConditionsCalculationActivity(calculation, validFilePath, failureMechanism, assessmentSection);
+            using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
+            {
                 // Call
                 activity.Run();
 
                 // Assert
                 Assert.AreEqual(ActivityState.Failed, activity.State);
             }
+
+            mockRepository.VerifyAll();
         }
 
         private static WaveImpactAsphaltCoverWaveConditionsCalculation GetValidCalculation(AssessmentSection assessmentSection)
Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Integration.Test/packages.config
===================================================================
diff -u -r08d25a2d4cd349395730ef39d3abf2cc51c30508 -r9633ab5f0a64cc0d7a285bdaeb7756c3aa9bdc35
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Integration.Test/packages.config	(.../packages.config)	(revision 08d25a2d4cd349395730ef39d3abf2cc51c30508)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Integration.Test/packages.config	(.../packages.config)	(revision 9633ab5f0a64cc0d7a285bdaeb7756c3aa9bdc35)
@@ -1,4 +1,5 @@
-<?xml version="1.0" encoding="utf-8"?><!--
+<?xml version="1.0" encoding="utf-8"?>
+<!--
 Copyright (C) Stichting Deltares 2017. All rights reserved.
 
 This file is part of Ringtoets.
@@ -22,4 +23,5 @@
 -->
 <packages>
   <package id="NUnit" version="3.6.0" targetFramework="net40" />
+  <package id="RhinoMocks" version="3.6.1" targetFramework="net40" />
 </packages>
\ No newline at end of file
Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test.csproj
===================================================================
diff -u -rec15ff35b39f333c422b8ca6988c34bd8573f134 -r9633ab5f0a64cc0d7a285bdaeb7756c3aa9bdc35
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test.csproj	(.../Ringtoets.WaveImpactAsphaltCover.Plugin.Test.csproj)	(revision ec15ff35b39f333c422b8ca6988c34bd8573f134)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test.csproj	(.../Ringtoets.WaveImpactAsphaltCover.Plugin.Test.csproj)	(revision 9633ab5f0a64cc0d7a285bdaeb7756c3aa9bdc35)
@@ -127,6 +127,10 @@
       <Project>{4843D6E5-066F-4795-94F5-1D53932DD03C}</Project>
       <Name>Ringtoets.Common.Data.TestUtil</Name>
     </ProjectReference>
+    <ProjectReference Include="..\..\..\HydraRing\src\Ringtoets.HydraRing.Calculation\Ringtoets.HydraRing.Calculation.csproj">
+      <Project>{888D4097-8BC2-4703-9FB1-8744C94D525E}</Project>
+      <Name>Ringtoets.HydraRing.Calculation</Name>
+    </ProjectReference>
     <ProjectReference Include="..\..\..\HydraRing\test\Ringtoets.HydraRing.Calculation.TestUtil\Ringtoets.HydraRing.Calculation.TestUtil.csproj">
       <Project>{74CBA865-9338-447F-BAD9-28312446AE84}</Project>
       <Name>Ringtoets.HydraRing.Calculation.TestUtil</Name>
Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test/TreeNodeInfos/WaveImpactAsphaltCoverWaveConditionsCalculationContextTreeNodeInfoTest.cs
===================================================================
diff -u -r7f8860b7aa23930fb9f49e9a28d8ebb709395cb5 -r9633ab5f0a64cc0d7a285bdaeb7756c3aa9bdc35
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test/TreeNodeInfos/WaveImpactAsphaltCoverWaveConditionsCalculationContextTreeNodeInfoTest.cs	(.../WaveImpactAsphaltCoverWaveConditionsCalculationContextTreeNodeInfoTest.cs)	(revision 7f8860b7aa23930fb9f49e9a28d8ebb709395cb5)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test/TreeNodeInfos/WaveImpactAsphaltCoverWaveConditionsCalculationContextTreeNodeInfoTest.cs	(.../WaveImpactAsphaltCoverWaveConditionsCalculationContextTreeNodeInfoTest.cs)	(revision 9633ab5f0a64cc0d7a285bdaeb7756c3aa9bdc35)
@@ -43,6 +43,7 @@
 using Ringtoets.Common.Data.FailureMechanism;
 using Ringtoets.Common.Data.Hydraulics;
 using Ringtoets.Common.Data.TestUtil;
+using Ringtoets.HydraRing.Calculation.Calculator.Factory;
 using Ringtoets.HydraRing.Calculation.TestUtil.Calculator;
 using Ringtoets.Revetment.Data;
 using Ringtoets.WaveImpactAsphaltCover.Data;
@@ -1231,11 +1232,14 @@
                 gui.Stub(g => g.Get(context, treeViewControl)).Return(menuBuilderMock);
                 gui.Stub(g => g.MainWindow).Return(mainWindow);
 
+                int calculators = calculation.InputParameters.WaterLevels.Count();
+                var calculatorFactory = mocks.Stub<IHydraRingCalculatorFactory>();
+                calculatorFactory.Expect(cf => cf.CreateWaveConditionsCosineCalculator(testDataPath)).Return(new TestWaveConditionsCosineCalculator()).Repeat.Times(calculators);
                 mocks.ReplayAll();
 
                 plugin.Gui = gui;
 
-                using (new HydraRingCalculatorFactoryConfig())
+                using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
                 using (ContextMenuStrip contextMenu = info.ContextMenuStrip(context, null, treeViewControl))
                 {
                     // When
Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test/TreeNodeInfos/WaveImpactAsphaltCoverWaveConditionsCalculationGroupContextTreeNodeInfoTest.cs
===================================================================
diff -u -r41da80335e9db4b38a470de5b247f759ca497997 -r9633ab5f0a64cc0d7a285bdaeb7756c3aa9bdc35
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test/TreeNodeInfos/WaveImpactAsphaltCoverWaveConditionsCalculationGroupContextTreeNodeInfoTest.cs	(.../WaveImpactAsphaltCoverWaveConditionsCalculationGroupContextTreeNodeInfoTest.cs)	(revision 41da80335e9db4b38a470de5b247f759ca497997)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.Plugin.Test/TreeNodeInfos/WaveImpactAsphaltCoverWaveConditionsCalculationGroupContextTreeNodeInfoTest.cs	(.../WaveImpactAsphaltCoverWaveConditionsCalculationGroupContextTreeNodeInfoTest.cs)	(revision 9633ab5f0a64cc0d7a285bdaeb7756c3aa9bdc35)
@@ -42,6 +42,7 @@
 using Ringtoets.Common.Data.Hydraulics;
 using Ringtoets.Common.Data.TestUtil;
 using Ringtoets.Common.Forms;
+using Ringtoets.HydraRing.Calculation.Calculator.Factory;
 using Ringtoets.HydraRing.Calculation.TestUtil.Calculator;
 using Ringtoets.Revetment.Data;
 using Ringtoets.WaveImpactAsphaltCover.Data;
@@ -932,9 +933,12 @@
                 gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
                 gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
 
+                int calculators = failureMechanism.Calculations.Cast<WaveImpactAsphaltCoverWaveConditionsCalculation>().Sum(c => c.InputParameters.WaterLevels.Count());
+                var calculatorFactory = mocks.Stub<IHydraRingCalculatorFactory>();
+                calculatorFactory.Expect(cf => cf.CreateWaveConditionsCosineCalculator(hrdPath)).Return(new TestWaveConditionsCosineCalculator()).Repeat.Times(calculators);
                 mocks.ReplayAll();
 
-                using (new HydraRingCalculatorFactoryConfig())
+                using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
                 using (ContextMenuStrip contextMenu = info.ContextMenuStrip(nodeData, parentNodeData, treeViewControl))
                 {
                     // Call
@@ -985,9 +989,10 @@
                 gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
                 gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
 
+                var calculatorFactory = mocks.Stub<IHydraRingCalculatorFactory>();
                 mocks.ReplayAll();
 
-                using (new HydraRingCalculatorFactoryConfig())
+                using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
                 using (ContextMenuStrip contextMenu = info.ContextMenuStrip(nodeData, parentNodeData, treeViewControl))
                 {
                     // Call
@@ -1030,9 +1035,10 @@
                 gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
                 gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
 
+                var calculatorFactory = mocks.Stub<IHydraRingCalculatorFactory>();
                 mocks.ReplayAll();
 
-                using (new HydraRingCalculatorFactoryConfig())
+                using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
                 using (ContextMenuStrip contextMenu = info.ContextMenuStrip(nodeData, parentNodeData, treeViewControl))
                 {
                     // Call
@@ -1102,9 +1108,10 @@
                 gui.Stub(g => g.Get(nodeData, treeViewControl)).Return(menuBuilder);
                 gui.Stub(g => g.MainWindow).Return(mocks.Stub<IMainWindow>());
 
+                var calculatorFactory = mocks.Stub<IHydraRingCalculatorFactory>();
                 mocks.ReplayAll();
 
-                using (new HydraRingCalculatorFactoryConfig())
+                using (new HydraRingCalculatorFactoryConfig(calculatorFactory))
                 using (ContextMenuStrip contextMenu = info.ContextMenuStrip(nodeData, parentNodeData, treeViewControl))
                 {
                     // Call