Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Forms.Test/Views/GrassCoverErosionInwardsViewHelperTest.cs
===================================================================
diff -u -r164556e75ddc489940c96a84fd41589a4acbac80 -r686a257dd8e21e34a52b265f85ef4ac4e11e44a3
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Forms.Test/Views/GrassCoverErosionInwardsViewHelperTest.cs	(.../GrassCoverErosionInwardsViewHelperTest.cs)	(revision 164556e75ddc489940c96a84fd41589a4acbac80)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Forms.Test/Views/GrassCoverErosionInwardsViewHelperTest.cs	(.../GrassCoverErosionInwardsViewHelperTest.cs)	(revision 686a257dd8e21e34a52b265f85ef4ac4e11e44a3)
@@ -31,7 +31,6 @@
     [TestFixture]
     public class GrassCoverErosionInwardsViewHelperTest
     {
-
         private readonly GrassCoverErosionInwardsFailureMechanismSectionResult[] oneSectionResult = new[]
         {
             new GrassCoverErosionInwardsFailureMechanismSectionResult(
@@ -164,5 +163,89 @@
             Assert.AreEqual(1, collectCalculationsPerSegment["firstSection"].Count);
             Assert.AreEqual(1, collectCalculationsPerSegment["secondSection"].Count);
         }
+
+        [Test]
+        public void FailureMechanismSectionForCalculation_NullParameters_Null()
+        {
+            // Call
+            var failureMechanismSection = GrassCoverErosionInwardsHelper.FailureMechanismSectionForCalculation(null, null);
+
+            // Assert
+            Assert.IsNull(failureMechanismSection);
+        }
+
+        [Test]
+        public void FailureMechanismSectionForCalculation_FirstParameterNull_Null()
+        {
+            // Setup
+            var calculation = new GrassCoverErosionInwardsCalculation();
+
+            // Call
+            var failureMechanismSection = GrassCoverErosionInwardsHelper.FailureMechanismSectionForCalculation(null, calculation);
+
+            // Assert
+            Assert.IsNull(failureMechanismSection);
+        }
+
+        [Test]
+        public void FailureMechanismSectionForCalculation_SecondParameterNull_Null()
+        {
+            // Call
+            var failureMechanismSection = GrassCoverErosionInwardsHelper.FailureMechanismSectionForCalculation(oneSectionResult, null);
+
+            // Assert
+            Assert.IsNull(failureMechanismSection);
+        }
+
+        [Test]
+        public void FailureMechanismSectionForCalculation_ValidEmptyFirstParameter_Null()
+        {
+            // Setup
+            var calculation = new GrassCoverErosionInwardsCalculation();
+
+            // Call
+            var failureMechanismSection = GrassCoverErosionInwardsHelper.FailureMechanismSectionForCalculation(oneSectionResult, calculation);
+
+            // Assert
+            Assert.IsNull(failureMechanismSection);
+        }
+
+        [Test]
+        public void FailureMechanismSectionForCalculation_FirstSectionResultContainsCalculation_FailureMechanismSectionOfFirstSectionResult()
+        {
+            // Setup
+            var calculation = new GrassCoverErosionInwardsCalculation
+            {
+                InputParameters =
+                {
+                    DikeProfile = new DikeProfile(new Point2D(1.1, 2.2), new RoughnessPoint[0], new Point2D[0])
+                }
+            };
+
+            // Call
+            var failureMechanismSection = GrassCoverErosionInwardsHelper.FailureMechanismSectionForCalculation(twoSectionResults, calculation);
+
+            // Assert
+            Assert.AreSame(twoSectionResults[0].Section, failureMechanismSection);
+        }
+
+        [Test]
+        public void FailureMechanismSectionForCalculation_SecondSectionResultContainsCalculation_FailureMechanismSectionOfSecondSectionResult()
+        {
+            // Setup
+            var calculation = new GrassCoverErosionInwardsCalculation
+            {
+                InputParameters =
+                {
+                    DikeProfile = new DikeProfile(new Point2D(50.0, 66.0), new RoughnessPoint[0], new Point2D[0])
+                }
+            };
+
+            // Call
+            var failureMechanismSection = GrassCoverErosionInwardsHelper.FailureMechanismSectionForCalculation(twoSectionResults, calculation);
+
+            // Assert
+            Assert.AreSame(twoSectionResults[1].Section, failureMechanismSection);
+        }
     }
 }
\ No newline at end of file