Index: Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingDataTest.cs
===================================================================
diff -u -r5076e379f409c3b5ba41eb98256e3dd5d140571c -r78aece3188a23a908e7c0a47e53e5facd1c7edb5
--- Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingDataTest.cs	(.../PipingDataTest.cs)	(revision 5076e379f409c3b5ba41eb98256e3dd5d140571c)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Data.Test/PipingDataTest.cs	(.../PipingDataTest.cs)	(revision 78aece3188a23a908e7c0a47e53e5facd1c7edb5)
@@ -1,7 +1,7 @@
 using Core.Common.Base;
 using NUnit.Framework;
 using Rhino.Mocks;
-
+using Ringtoets.Piping.Calculation.TestUtil;
 using Ringtoets.Piping.Data.Probabilistics;
 
 namespace Ringtoets.Piping.Data.Test
@@ -157,5 +157,21 @@
             // Call & Assert
             pipingData.Detach(observer);
         }
+
+        [Test]
+        public void ClearOutput_Always_SetsOutputToNull()
+        {
+            // Setup
+            var data = new PipingData
+            {
+                Output = new TestPipingOutput()
+            };
+
+            // Call
+            data.ClearOutput();
+
+            // Assert
+            Assert.IsNull(data.Output);
+        }
     }
 }
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