Index: Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/ViewInfos/PipingCalculationsViewInfoTest.cs
===================================================================
diff -u -r915d8a66e5d294a18f9452775406e36a3f8fbdc0 -r887b289acf19a81f62d78f371ab70c3f82812b95
--- Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/ViewInfos/PipingCalculationsViewInfoTest.cs	(.../PipingCalculationsViewInfoTest.cs)	(revision 915d8a66e5d294a18f9452775406e36a3f8fbdc0)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Plugin.Test/ViewInfos/PipingCalculationsViewInfoTest.cs	(.../PipingCalculationsViewInfoTest.cs)	(revision 887b289acf19a81f62d78f371ab70c3f82812b95)
@@ -40,7 +40,7 @@
         {
             // Assert
             Assert.AreEqual(typeof(PipingCalculationGroupContext), info.DataType);
-            Assert.AreEqual(typeof(CalculationGroup), info.ViewDataType);
+            Assert.AreEqual(typeof(ICalculationGroup), info.ViewDataType);
             TestHelper.AssertImagesAreEqual(PipingFormsResources.FolderIcon, info.Image);
         }
 
@@ -93,7 +93,7 @@
         {
             // Setup
             var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
-            var pipingFailureMechanismMock = mocks.StrictMock<PipingFailureMechanism>();
+            var pipingFailureMechanismMock = mocks.Stub<PipingFailureMechanism>();
             var pipingCalculationsGroupMock = mocks.StrictMock<CalculationGroup>();
             var pipingCalculationGroupContext = new PipingCalculationGroupContext(pipingCalculationsGroupMock, Enumerable.Empty<RingtoetsPipingSurfaceLine>(), Enumerable.Empty<StochasticSoilModel>(), pipingFailureMechanismMock, assessmentSectionMock);
 
@@ -126,7 +126,7 @@
             // Setup
             var viewMock = mocks.StrictMock<PipingCalculationsView>();
             var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
-            var pipingFailureMechanismMock = mocks.StrictMock<PipingFailureMechanism>();
+            var pipingFailureMechanismMock = mocks.Stub<PipingFailureMechanism>();
             var pipingCalculationsGroupMock = mocks.StrictMock<CalculationGroup>();
 
             viewMock.Expect(vm => vm.Data).Return(pipingCalculationsGroupMock);