Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Service.TestUtil/GrassCoverErosionInwardsCalculationServiceTestHelper.cs
===================================================================
diff -u -r92210258706d0f57e05552037b676bd941a6fe19 -r9ae269097158ed221b99e9ad6c7a2eb97380e7d4
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Service.TestUtil/GrassCoverErosionInwardsCalculationServiceTestHelper.cs	(.../GrassCoverErosionInwardsCalculationServiceTestHelper.cs)	(revision 92210258706d0f57e05552037b676bd941a6fe19)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Service.TestUtil/GrassCoverErosionInwardsCalculationServiceTestHelper.cs	(.../GrassCoverErosionInwardsCalculationServiceTestHelper.cs)	(revision 9ae269097158ed221b99e9ad6c7a2eb97380e7d4)
@@ -44,5 +44,15 @@
                                  : "Er is geen foutrapport beschikbaar."),
                             actual);
         }
+
+        public static void AssertCalculationNotConverged(string calculationDescription, string calculationName, string actual)
+        {
+            Assert.AreEqual($"De {calculationDescription} berekening voor grasbekleding erosie kruin en binnentalud '{calculationName}' is niet geconvergeerd.", actual);
+        }
+
+        public static void AssertGeneralResultNotSetMessage(string actual)
+        {
+            Assert.AreEqual("Het uitlezen van illustratiepunten is mislukt.", actual);
+        }
     }
 }
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