Index: Ringtoets/Revetment/test/Ringtoets.Revetment.Service.Test/WaveConditionsCalculationServiceBaseTest.cs
===================================================================
diff -u -re56b96f63d7f5098e36566ea556f45af5c142320 -r6a0cc80559d1f5dd0476dbe7eba4865cc158e93f
--- Ringtoets/Revetment/test/Ringtoets.Revetment.Service.Test/WaveConditionsCalculationServiceBaseTest.cs	(.../WaveConditionsCalculationServiceBaseTest.cs)	(revision e56b96f63d7f5098e36566ea556f45af5c142320)
+++ Ringtoets/Revetment/test/Ringtoets.Revetment.Service.Test/WaveConditionsCalculationServiceBaseTest.cs	(.../WaveConditionsCalculationServiceBaseTest.cs)	(revision 6a0cc80559d1f5dd0476dbe7eba4865cc158e93f)
@@ -25,7 +25,6 @@
 using System.Linq;
 using Core.Common.Base.Data;
 using Core.Common.TestUtil;
-using Core.Common.Utils;
 using NUnit.Framework;
 using Rhino.Mocks;
 using Ringtoets.Common.Data.DikeProfiles;
@@ -39,6 +38,7 @@
 using Ringtoets.HydraRing.Calculation.TestUtil;
 using Ringtoets.HydraRing.Calculation.TestUtil.Calculator;
 using Ringtoets.Revetment.Data;
+using Ringtoets.Revetment.TestUtil;
 
 namespace Ringtoets.Revetment.Service.Test
 {
@@ -650,7 +650,9 @@
                 WaveConditionsOutput[] waveConditionsOutputs = service.Outputs.ToArray();
                 Assert.AreEqual(3, waveConditionsOutputs.Length);
 
-                AssertFailedCalculationOutput(waterLevelUpperBoundary, norm, waveConditionsOutputs[0]);
+                WaveConditionsOutputTestHelper.AssertFailedOutput(waterLevelUpperBoundary,
+                                                                  norm,
+                                                                  waveConditionsOutputs[0]);
             }
             mockRepository.VerifyAll();
         }
@@ -696,24 +698,6 @@
             mockRepository.VerifyAll();
         }
 
-        private static void AssertFailedCalculationOutput(double waterLevel, double targetNorm, WaveConditionsOutput actual)
-        {
-            double targetReliability = StatisticsConverter.ProbabilityToReliability(targetNorm);
-            double targetProbability = StatisticsConverter.ReliabilityToProbability(targetReliability);
-
-            Assert.IsNotNull(actual);
-            Assert.AreEqual(waterLevel, actual.WaterLevel, actual.WaterLevel.GetAccuracy());
-            Assert.IsNaN(actual.WaveHeight);
-            Assert.IsNaN(actual.WavePeakPeriod);
-            Assert.IsNaN(actual.WaveAngle);
-            Assert.IsNaN(actual.WaveDirection);
-            Assert.AreEqual(targetProbability, actual.TargetProbability);
-            Assert.AreEqual(targetReliability, actual.TargetReliability, actual.TargetReliability.GetAccuracy());
-            Assert.IsNaN(actual.CalculatedProbability);
-            Assert.IsNaN(actual.CalculatedReliability);
-            Assert.AreEqual(CalculationConvergence.CalculatedNotConverged, actual.CalculationConvergence);
-        }
-
         private static WaveConditionsInput GetDefaultValidationInput()
         {
             var input = new WaveConditionsInput