Index: Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Data.Test/StabilityStoneCoverWaveConditionsCalculationTest.cs
===================================================================
diff -u -rf135e2b0ee4b6ff6eb52d57083243d48ba47cad7 -r413528dc8e69a34dea738f813daada7d0bda4461
--- Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Data.Test/StabilityStoneCoverWaveConditionsCalculationTest.cs	(.../StabilityStoneCoverWaveConditionsCalculationTest.cs)	(revision f135e2b0ee4b6ff6eb52d57083243d48ba47cad7)
+++ Ringtoets/StabilityStoneCover/test/Ringtoets.StabilityStoneCover.Data.Test/StabilityStoneCoverWaveConditionsCalculationTest.cs	(.../StabilityStoneCoverWaveConditionsCalculationTest.cs)	(revision 413528dc8e69a34dea738f813daada7d0bda4461)
@@ -113,5 +113,19 @@
             // Assert
             Assert.AreSame(inputParameters, input);
         }
+
+        [Test]
+        public void GetObservableOutput_Always_ReturnsOutput()
+        {
+            // Setup
+            var calculation = new StabilityStoneCoverWaveConditionsCalculation();
+            var output = calculation.Output;
+
+            // Call
+            ICalculationOutput observableOutput = calculation.GetObservableOutput();
+
+            // Assert
+            Assert.AreSame(output, observableOutput);
+        }
     }
 }
\ No newline at end of file