Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs
===================================================================
diff -u -re98196d2643883a44bc503eae24b005474983074 -ra9eeb49c5f36afd8387f965a43e6caa90949feb9
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs)	(revision e98196d2643883a44bc503eae24b005474983074)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Plugin.Test/TreeNodeInfos/GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs	(.../GrassCoverErosionInwardsCalculationContextTreeNodeInfoTest.cs)	(revision a9eeb49c5f36afd8387f965a43e6caa90949feb9)
@@ -334,6 +334,48 @@
         }
 
         [Test]
+        public void ContextMenuStrip_FailureMechanismContributionZero_ContextMenuItemPerformCalculationDisabledAndTooltipSet()
+        {
+            // Setup
+            var guiMock = mocks.StrictMock<IGui>();
+
+            string validFilePath = Path.Combine(testDataPath, "complete.sqlite");
+
+            var hydraulicBoundaryDatabase = new HydraulicBoundaryDatabase
+            {
+                FilePath = validFilePath,
+                Version = "1.0"
+            };
+
+            var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
+            assessmentSectionMock.Stub(asm => asm.HydraulicBoundaryDatabase).Return(hydraulicBoundaryDatabase);
+
+            var calculation = new GrassCoverErosionInwardsCalculation();
+            var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
+            var nodeData = new GrassCoverErosionInwardsCalculationContext(calculation, failureMechanism, assessmentSectionMock);
+
+            using (var treeViewControl = new TreeViewControl())
+            {
+                guiMock.Expect(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+
+                mocks.ReplayAll();
+
+                plugin.Gui = guiMock;
+
+                // Call
+                using (ContextMenuStrip contextMenu = info.ContextMenuStrip(nodeData, null, treeViewControl))
+                {
+                    // Assert
+                    TestHelper.AssertContextMenuStripContainsItem(contextMenu, contextMenuCalculateIndex,
+                                                                  "Be&rekenen",
+                                                                  "De bijdrage van dit toetsspoor is nul.",
+                                                                  RingtoetsCommonFormsResources.CalculateIcon,
+                                                                  false);
+                }
+            }
+        }
+
+        [Test]
         public void ContextMenuStrip_AllRequiredInputSet_ContextMenuItemPerformCalculationEnabled()
         {
             // Setup
@@ -442,6 +484,48 @@
         }
 
         [Test]
+        public void ContextMenuStrip_FailureMechanismContributionZero_ContextMenuItemValidateCalculationDisabledAndTooltipSet()
+        {
+            // Setup
+            var guiMock = mocks.StrictMock<IGui>();
+
+            string validFilePath = Path.Combine(testDataPath, "complete.sqlite");
+
+            var hydraulicBoundaryDatabase = new HydraulicBoundaryDatabase
+            {
+                FilePath = validFilePath,
+                Version = "1.0"
+            };
+
+            var assessmentSectionMock = mocks.StrictMock<IAssessmentSection>();
+            assessmentSectionMock.Stub(asm => asm.HydraulicBoundaryDatabase).Return(hydraulicBoundaryDatabase);
+
+            var calculation = new GrassCoverErosionInwardsCalculation();
+            var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
+            var nodeData = new GrassCoverErosionInwardsCalculationContext(calculation, failureMechanism, assessmentSectionMock);
+
+            using (var treeViewControl = new TreeViewControl())
+            {
+                guiMock.Expect(cmp => cmp.Get(nodeData, treeViewControl)).Return(new CustomItemsOnlyContextMenuBuilder());
+
+                mocks.ReplayAll();
+
+                plugin.Gui = guiMock;
+
+                // Call
+                using (ContextMenuStrip contextMenu = info.ContextMenuStrip(nodeData, null, treeViewControl))
+                {
+                    // Assert
+                    TestHelper.AssertContextMenuStripContainsItem(contextMenu, contextMenuValidateIndex,
+                                                                  "&Valideren",
+                                                                  "De bijdrage van dit toetsspoor is nul.",
+                                                                  RingtoetsCommonFormsResources.ValidateIcon,
+                                                                  false);
+                }
+            }
+        }
+
+        [Test]
         public void ContextMenuStrip_AllRequiredInputSet_ContextMenuItemValidateCalculationEnabled()
         {
             // Setup