Index: Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Forms.Test/PropertyClasses/GrassCoverErosionInwardsFailureMechanismContextPropertiesTest.cs
===================================================================
diff -u -r9a001397536d9dcca5d009c8518478cdfcddbeca -r819a4413e76659295c4f62a5ccf204c19d2e7161
--- Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Forms.Test/PropertyClasses/GrassCoverErosionInwardsFailureMechanismContextPropertiesTest.cs	(.../GrassCoverErosionInwardsFailureMechanismContextPropertiesTest.cs)	(revision 9a001397536d9dcca5d009c8518478cdfcddbeca)
+++ Ringtoets/GrassCoverErosionInwards/test/Ringtoets.GrassCoverErosionInwards.Forms.Test/PropertyClasses/GrassCoverErosionInwardsFailureMechanismContextPropertiesTest.cs	(.../GrassCoverErosionInwardsFailureMechanismContextPropertiesTest.cs)	(revision 819a4413e76659295c4f62a5ccf204c19d2e7161)
@@ -19,6 +19,7 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
+using System;
 using System.ComponentModel;
 using System.Linq;
 using Core.Common.Base;
@@ -53,6 +54,40 @@
         }
 
         [Test]
+        public void Constructor_DataIsNull_ThrowArgumentNullException()
+        {
+            // Setup
+            var handler = CreateSimpleHandler();
+            mockRepository.ReplayAll();
+
+            // Call
+            TestDelegate test = () => new GrassCoverErosionInwardsFailureMechanismContextProperties(null, handler);
+
+            // Assert
+            var paramName = Assert.Throws<ArgumentNullException>(test).ParamName;
+            Assert.AreEqual("data", paramName);
+            mockRepository.VerifyAll();
+        }
+
+        [Test]
+        public void Constructor_ChangeHandlerIsNull_ThrowArgumentNullException()
+        {
+            // Setup
+            var assessmentSection = mockRepository.Stub<IAssessmentSection>();
+            mockRepository.ReplayAll();
+
+            // Call
+            TestDelegate test = () => new GrassCoverErosionInwardsFailureMechanismContextProperties(
+                new GrassCoverErosionInwardsFailureMechanismContext(new GrassCoverErosionInwardsFailureMechanism(), assessmentSection),
+                null);
+
+            // Assert
+            var paramName = Assert.Throws<ArgumentNullException>(test).ParamName;
+            Assert.AreEqual("handler", paramName);
+            mockRepository.VerifyAll();
+        }
+
+        [Test]
         public void Constructor_ExpectedValues()
         {
             // Setup