Index: Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Service.Test/Converters/MacroStabilityInwardsSlipPlaneUpliftVanConverterTest.cs
===================================================================
diff -u -r59adecfc7f82ab8277440ecae147453f5cbddbbf -r7b2237f0bdfa03edcf158d24294c4433266ca91f
--- Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Service.Test/Converters/MacroStabilityInwardsSlipPlaneUpliftVanConverterTest.cs	(.../MacroStabilityInwardsSlipPlaneUpliftVanConverterTest.cs)	(revision 59adecfc7f82ab8277440ecae147453f5cbddbbf)
+++ Ringtoets/MacroStabilityInwards/test/Ringtoets.MacroStabilityInwards.Service.Test/Converters/MacroStabilityInwardsSlipPlaneUpliftVanConverterTest.cs	(.../MacroStabilityInwardsSlipPlaneUpliftVanConverterTest.cs)	(revision 7b2237f0bdfa03edcf158d24294c4433266ca91f)
@@ -20,7 +20,11 @@
 // All rights reserved.
 
 using System;
+using System.Collections.Generic;
+using System.Linq;
+using Core.Common.Base.Data;
 using NUnit.Framework;
+using Ringtoets.Common.Data.TestUtil;
 using Ringtoets.MacroStabilityInwards.Data;
 using Ringtoets.MacroStabilityInwards.KernelWrapper.Calculators.UpliftVan;
 using Ringtoets.MacroStabilityInwards.KernelWrapper.Calculators.UpliftVan.Output;
@@ -62,11 +66,22 @@
             MacroStabilityInwardsSlipPlaneUpliftVan output = MacroStabilityInwardsSlipPlaneUpliftVanConverter.Convert(result);
 
             // Assert
-            CollectionAssert.AreEqual(tangentLines, output.TangentLines);
+            AssertTangentLines(tangentLines, output.TangentLines);
             AssertGrid(leftGrid, output.LeftGrid);
             AssertGrid(rightGrid, output.RightGrid);
         }
 
+        private static void AssertTangentLines(IEnumerable<double> expectedTangentLines, IEnumerable<RoundedDouble> actualTangentLines)
+        {
+            Assert.AreEqual(expectedTangentLines.Count(), actualTangentLines.Count());
+            for (var i = 0; i < expectedTangentLines.Count(); i++)
+            {
+                RoundedDouble tangentLine = actualTangentLines.ElementAt(i);
+                Assert.AreEqual(2, tangentLine.NumberOfDecimalPlaces);
+                Assert.AreEqual(expectedTangentLines.ElementAt(i), tangentLine, tangentLine.GetAccuracy());
+            }
+        }
+
         private static void AssertGrid(UpliftVanGrid expectedGrid, MacroStabilityInwardsGrid actualGrid)
         {
             Assert.AreEqual(expectedGrid.XLeft, actualGrid.XLeft);