Index: Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/RingtoetsPipingSurfaceLineTest.cs
===================================================================
diff -u -r130efbf0e33a64b60dc853347a93f182bf6f1749 -r54e6baff4fab535777949f737314f052853e818a
--- Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/RingtoetsPipingSurfaceLineTest.cs	(.../RingtoetsPipingSurfaceLineTest.cs)	(revision 130efbf0e33a64b60dc853347a93f182bf6f1749)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/RingtoetsPipingSurfaceLineTest.cs	(.../RingtoetsPipingSurfaceLineTest.cs)	(revision 54e6baff4fab535777949f737314f052853e818a)
@@ -23,6 +23,7 @@
 using System.Collections.Generic;
 using System.Linq;
 using Core.Common.Base.Geometry;
+using Core.Common.Base.Storage;
 using Core.Common.TestUtil;
 using NUnit.Framework;
 using Ringtoets.Piping.Data.Properties;
@@ -41,11 +42,14 @@
             var surfaceLine = new RingtoetsPipingSurfaceLine();
 
             // Assert
+            Assert.IsInstanceOf<IStorable>(surfaceLine);
+
             Assert.AreEqual(String.Empty, surfaceLine.Name);
             CollectionAssert.IsEmpty(surfaceLine.Points);
             Assert.IsNull(surfaceLine.StartingWorldPoint);
             Assert.IsNull(surfaceLine.EndingWorldPoint);
             Assert.IsNull(surfaceLine.ReferenceLineIntersectionWorldPoint);
+            Assert.AreEqual(0, surfaceLine.StorageId);
         }
 
         [Test]