Index: Ringtoets/Common/test/Ringtoets.Common.Service.Test/RingtoetsCommonDataCalculationServiceTest.cs
===================================================================
diff -u -r2973c5f790a5131e427bd5f73e2a620044199639 -r73d7f318e9a02087ac21dde7d3728d8eac27a9f5
--- Ringtoets/Common/test/Ringtoets.Common.Service.Test/RingtoetsCommonDataCalculationServiceTest.cs	(.../RingtoetsCommonDataCalculationServiceTest.cs)	(revision 2973c5f790a5131e427bd5f73e2a620044199639)
+++ Ringtoets/Common/test/Ringtoets.Common.Service.Test/RingtoetsCommonDataCalculationServiceTest.cs	(.../RingtoetsCommonDataCalculationServiceTest.cs)	(revision 73d7f318e9a02087ac21dde7d3728d8eac27a9f5)
@@ -19,40 +19,28 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
-using System;
 using Core.Common.Utils;
 using NUnit.Framework;
 using Ringtoets.HydraRing.Calculation.Data.Output;
+using Ringtoets.HydraRing.Data;
 
 namespace Ringtoets.Common.Service.Test
 {
     [TestFixture]
     public class RingtoetsCommonDataCalculationServiceTest
     {
         [Test]
-        public void CalculationConverged_WithNullOutput_ThrowsArgumentNullException()
-        {
-            // Call
-            TestDelegate test = () => RingtoetsCommonDataCalculationService.CalculationConverged(null, 1.0);
-
-            // Assert
-            var exception = Assert.Throws<ArgumentNullException>(test);
-            Assert.AreEqual("output", exception.ParamName);
-        }
-
-        [Test]
         public void CalculationConverged_WithConvergedResults_CalculationConvergedTrue()
         {
             // Setup
             double norm = 1.0e3;
             double reliabilityIndex = StatisticsConverter.NormToBeta(norm);
-            var output = new ReliabilityIndexCalculationOutput(reliabilityIndex, reliabilityIndex);
 
             // Call
-            bool calculationConverged = RingtoetsCommonDataCalculationService.CalculationConverged(output, norm);
+            CalculationConvergence calculationConverged = RingtoetsCommonDataCalculationService.CalculationConverged(reliabilityIndex, norm);
 
             // Assert
-            Assert.IsTrue(calculationConverged);
+            Assert.AreEqual(CalculationConvergence.CalculatedConverged, calculationConverged);
         }
 
         [Test]
@@ -63,10 +51,10 @@
             double norm = 1;
 
             // Call
-            bool calculationConverged = RingtoetsCommonDataCalculationService.CalculationConverged(output, norm);
+            CalculationConvergence calculationConverged = RingtoetsCommonDataCalculationService.CalculationConverged(output.CalculatedReliabilityIndex, norm);
 
             // Assert
-            Assert.IsFalse(calculationConverged);
+            Assert.AreEqual(CalculationConvergence.CalculatedNotConverged, calculationConverged);
         }
     }
 }
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