Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Serializers/TangentLinesXmlSerializerTest.cs
===================================================================
diff -u -r70e6f175074b3d62532adfda735e6f719602f3b1 -rdb798825b9ed601ec3716399ce46e19d2ff2d8ea
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Serializers/TangentLinesXmlSerializerTest.cs	(.../TangentLinesXmlSerializerTest.cs)	(revision 70e6f175074b3d62532adfda735e6f719602f3b1)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Serializers/TangentLinesXmlSerializerTest.cs	(.../TangentLinesXmlSerializerTest.cs)	(revision db798825b9ed601ec3716399ce46e19d2ff2d8ea)
@@ -21,6 +21,8 @@
 
 using System;
 using Application.Ringtoets.Storage.Serializers;
+using Core.Common.Base.Data;
+using Core.Common.TestUtil;
 using NUnit.Framework;
 
 namespace Application.Ringtoets.Storage.Test.Serializers
@@ -35,7 +37,7 @@
             var serializer = new TangentLinesXmlSerializer();
 
             // Assert
-            Assert.IsInstanceOf<DataCollectionSerializer<double, TangentLinesXmlSerializer.SerializableTangentLine>>(serializer);
+            Assert.IsInstanceOf<DataCollectionSerializer<RoundedDouble, TangentLinesXmlSerializer.SerializableTangentLine>>(serializer);
         }
 
         [Test]
@@ -45,14 +47,14 @@
             var random = new Random(31);
             var original = new[]
             {
-                double.NaN,
-                random.NextDouble()
+                new RoundedDouble(2, double.NaN),
+                random.NextRoundedDouble()
             };
             var serializer = new TangentLinesXmlSerializer();
 
             // When
             string xml = serializer.ToXml(original);
-            double[] roundtripResult = serializer.FromXml(xml);
+            RoundedDouble[] roundtripResult = serializer.FromXml(xml);
 
             // Then
             CollectionAssert.AreEqual(original, roundtripResult);