Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PresentationObjects/PipingCalculationInputsTest.cs
===================================================================
diff -u -r2a90c0c1be6114f72af65c42f0a6f334b30e4755 -r78aece3188a23a908e7c0a47e53e5facd1c7edb5
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PresentationObjects/PipingCalculationInputsTest.cs	(.../PipingCalculationInputsTest.cs)	(revision 2a90c0c1be6114f72af65c42f0a6f334b30e4755)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PresentationObjects/PipingCalculationInputsTest.cs	(.../PipingCalculationInputsTest.cs)	(revision 78aece3188a23a908e7c0a47e53e5facd1c7edb5)
@@ -2,7 +2,7 @@
 using NUnit.Framework;
 
 using Rhino.Mocks;
-
+using Ringtoets.Piping.Calculation.TestUtil;
 using Ringtoets.Piping.Data;
 
 using Ringtoets.Piping.Forms.PresentationObjects;
@@ -90,5 +90,24 @@
             // Assert
             mocks.VerifyAll();
         }
+
+        [Test]
+        public void ClearOutput_Always_SetsOutputToNull()
+        {
+            // Setup
+            var inputs = new PipingCalculationInputs
+            {
+                PipingData = new PipingData
+                {
+                    Output = new TestPipingOutput()
+                }
+            };
+
+            // Call
+            inputs.ClearOutput();
+
+            // Assert
+            Assert.IsNull(inputs.PipingData.Output);
+        }
     }
 }
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