Index: Ringtoets/Common/test/Ringtoets.Common.IO.TestUtil/CustomCalculationConfigurationExporterDesignGuidelinesTestFixture.cs
===================================================================
diff -u -rc4528c8f253cdfee73a61d9af5fe869de793cc40 -rca6df7c04fabeeea7b5757f6e7472f6791a91968
--- Ringtoets/Common/test/Ringtoets.Common.IO.TestUtil/CustomCalculationConfigurationExporterDesignGuidelinesTestFixture.cs	(.../CustomCalculationConfigurationExporterDesignGuidelinesTestFixture.cs)	(revision c4528c8f253cdfee73a61d9af5fe869de793cc40)
+++ Ringtoets/Common/test/Ringtoets.Common.IO.TestUtil/CustomCalculationConfigurationExporterDesignGuidelinesTestFixture.cs	(.../CustomCalculationConfigurationExporterDesignGuidelinesTestFixture.cs)	(revision ca6df7c04fabeeea7b5757f6e7472f6791a91968)
@@ -184,10 +184,7 @@
             }
         }
 
-        protected virtual TCalculation CreateCalculation()
-        {
-            return (TCalculation) Activator.CreateInstance(typeof(TCalculation));
-        }
+        protected abstract TCalculation CreateCalculation();
 
         private static TCalculationConfigurationExporter CallConfigurationFilePathConstructor(
             IEnumerable<ICalculationBase> configuration, string filePath)
Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/Exporters/GrassCoverErosionInwardsCalculationConfigurationExporterTest.cs
===================================================================
diff -u -rb731017e828e47ed72aa803dfcc7eeaa7f770933 -rca6df7c04fabeeea7b5757f6e7472f6791a91968
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/Exporters/GrassCoverErosionInwardsCalculationConfigurationExporterTest.cs	(.../GrassCoverErosionInwardsCalculationConfigurationExporterTest.cs)	(revision b731017e828e47ed72aa803dfcc7eeaa7f770933)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.IO.Test/Exporters/GrassCoverErosionInwardsCalculationConfigurationExporterTest.cs	(.../GrassCoverErosionInwardsCalculationConfigurationExporterTest.cs)	(revision ca6df7c04fabeeea7b5757f6e7472f6791a91968)
@@ -77,5 +77,10 @@
                 calculationGroup
             }, expectedXmlFilePath);
         }
+
+        protected override GrassCoverErosionInwardsCalculation CreateCalculation()
+        {
+            return new GrassCoverErosionInwardsCalculation();
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.IO.Test/Exporters/GrassCoverErosionOutwardsCalculationConfigurationExporterTest.cs
===================================================================
diff -u -rb731017e828e47ed72aa803dfcc7eeaa7f770933 -rca6df7c04fabeeea7b5757f6e7472f6791a91968
--- Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.IO.Test/Exporters/GrassCoverErosionOutwardsCalculationConfigurationExporterTest.cs	(.../GrassCoverErosionOutwardsCalculationConfigurationExporterTest.cs)	(revision b731017e828e47ed72aa803dfcc7eeaa7f770933)
+++ Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.IO.Test/Exporters/GrassCoverErosionOutwardsCalculationConfigurationExporterTest.cs	(.../GrassCoverErosionOutwardsCalculationConfigurationExporterTest.cs)	(revision ca6df7c04fabeeea7b5757f6e7472f6791a91968)
@@ -89,5 +89,10 @@
                 calculationGroup
             }, expectedXmlFilePath);
         }
+
+        protected override GrassCoverErosionOutwardsWaveConditionsCalculation CreateCalculation()
+        {
+            return new GrassCoverErosionOutwardsWaveConditionsCalculation();
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.IO.Test/Exporters/StabilityStoneCoverCalculationConfigurationExporterTest.cs
===================================================================
diff -u -rb731017e828e47ed72aa803dfcc7eeaa7f770933 -rca6df7c04fabeeea7b5757f6e7472f6791a91968
--- Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.IO.Test/Exporters/StabilityStoneCoverCalculationConfigurationExporterTest.cs	(.../StabilityStoneCoverCalculationConfigurationExporterTest.cs)	(revision b731017e828e47ed72aa803dfcc7eeaa7f770933)
+++ Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.IO.Test/Exporters/StabilityStoneCoverCalculationConfigurationExporterTest.cs	(.../StabilityStoneCoverCalculationConfigurationExporterTest.cs)	(revision ca6df7c04fabeeea7b5757f6e7472f6791a91968)
@@ -89,5 +89,10 @@
                 calculationGroup
             }, expectedXmlFilePath);
         }
+
+        protected override StabilityStoneCoverWaveConditionsCalculation CreateCalculation()
+        {
+            return new StabilityStoneCoverWaveConditionsCalculation();
+        }
     }
 }
\ No newline at end of file
Index: Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.IO.Test/Exporters/WaveImpactAsphaltCoverCalculationConfigurationExporterTest.cs
===================================================================
diff -u -rb731017e828e47ed72aa803dfcc7eeaa7f770933 -rca6df7c04fabeeea7b5757f6e7472f6791a91968
--- Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.IO.Test/Exporters/WaveImpactAsphaltCoverCalculationConfigurationExporterTest.cs	(.../WaveImpactAsphaltCoverCalculationConfigurationExporterTest.cs)	(revision b731017e828e47ed72aa803dfcc7eeaa7f770933)
+++ Ringtoets/WaveImpactAsphaltCover/test/Ringtoets.WaveImpactAsphaltCover.IO.Test/Exporters/WaveImpactAsphaltCoverCalculationConfigurationExporterTest.cs	(.../WaveImpactAsphaltCoverCalculationConfigurationExporterTest.cs)	(revision ca6df7c04fabeeea7b5757f6e7472f6791a91968)
@@ -90,5 +90,10 @@
                 calculationGroup
             }, expectedXmlFilePath);
         }
+
+        protected override WaveImpactAsphaltCoverWaveConditionsCalculation CreateCalculation()
+        {
+            return new WaveImpactAsphaltCoverWaveConditionsCalculation();
+        }
     }
 }
\ No newline at end of file