Index: Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Data.Test/GrassCoverErosionOutwardsWaveConditionsCalculationTest.cs
===================================================================
diff -u -r07f3d67fe9512b3c8303ff09398b0a234900d546 -re73a7b80f2efd13d7d7e83844b778e6edf798d3d
--- Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Data.Test/GrassCoverErosionOutwardsWaveConditionsCalculationTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationTest.cs)	(revision 07f3d67fe9512b3c8303ff09398b0a234900d546)
+++ Ringtoets/GrassCoverErosionOutwards/test/Ringtoets.GrassCoverErosionOutwards.Data.Test/GrassCoverErosionOutwardsWaveConditionsCalculationTest.cs	(.../GrassCoverErosionOutwardsWaveConditionsCalculationTest.cs)	(revision e73a7b80f2efd13d7d7e83844b778e6edf798d3d)
@@ -45,7 +45,6 @@
 
             Assert.AreEqual(RingtoetsCommonDataResources.Calculation_DefaultName, calculation.Name);
             Assert.IsNotNull(calculation.InputParameters);
-            Assert.IsFalse(calculation.HasOutput);
             Assert.IsNull(calculation.Comments.Body);
             Assert.IsNull(calculation.Output);
             Assert.IsNull(calculation.InputParameters.ForeshoreProfile);
@@ -103,6 +102,38 @@
         }
 
         [Test]
+        public void ShouldCalculate_OutputNull_ReturnsTrue()
+        {
+            // Setup
+            var calculation = new GrassCoverErosionOutwardsWaveConditionsCalculation
+            {
+                Output = null
+            };
+
+            // Call
+            bool shouldCalculate = calculation.ShouldCalculate;
+
+            // Assert
+            Assert.IsTrue(shouldCalculate);
+        }
+
+        [Test]
+        public void ShouldCalculate_OutputSet_ReturnsFalse()
+        {
+            // Setup
+            var calculation = new GrassCoverErosionOutwardsWaveConditionsCalculation
+            {
+                Output = new GrassCoverErosionOutwardsWaveConditionsOutput(Enumerable.Empty<WaveConditionsOutput>())
+            };
+
+            // Call
+            bool shouldCalculate = calculation.ShouldCalculate;
+
+            // Assert
+            Assert.IsFalse(shouldCalculate);
+        }
+
+        [Test]
         public void Clone_AllPropertiesSet_ReturnNewInstanceWithCopiedValues()
         {
             // Setup