Index: Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Forms/PropertyClasses/GrassCoverErosionInwardsCalculationsProperties.cs
===================================================================
diff -u -r79378656df68fb71e15e1511f3c5071ace38f857 -ra0a47e24c45537d82a6d1c7c3b402b1554b90b76
--- Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Forms/PropertyClasses/GrassCoverErosionInwardsCalculationsProperties.cs	(.../GrassCoverErosionInwardsCalculationsProperties.cs)	(revision 79378656df68fb71e15e1511f3c5071ace38f857)
+++ Riskeer/GrassCoverErosionInwards/src/Riskeer.GrassCoverErosionInwards.Forms/PropertyClasses/GrassCoverErosionInwardsCalculationsProperties.cs	(.../GrassCoverErosionInwardsCalculationsProperties.cs)	(revision a0a47e24c45537d82a6d1c7c3b402b1554b90b76)
@@ -53,7 +53,7 @@
         /// </summary>
         /// <param name="data">The instance to show the properties of.</param>
         /// <param name="handler">Handler responsible for handling effects of a property change.</param>
-        /// <exception cref="ArgumentNullException">Thrown when any input parameter is <c>null</c>.</exception>
+        /// <exception cref="ArgumentNullException">Thrown when any parameter is <c>null</c>.</exception>
         public GrassCoverErosionInwardsCalculationsProperties(
             GrassCoverErosionInwardsFailureMechanism data,
             IFailureMechanismPropertyChangeHandler<GrassCoverErosionInwardsFailureMechanism> handler) : base(data, new ConstructionProperties
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Forms.Test/PropertyClasses/GrassCoverErosionInwardsCalculationsPropertiesTest.cs
===================================================================
diff -u -rf4a45a11e173eabd485d2bb1727c28a3d07a18d1 -ra0a47e24c45537d82a6d1c7c3b402b1554b90b76
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Forms.Test/PropertyClasses/GrassCoverErosionInwardsCalculationsPropertiesTest.cs	(.../GrassCoverErosionInwardsCalculationsPropertiesTest.cs)	(revision f4a45a11e173eabd485d2bb1727c28a3d07a18d1)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Forms.Test/PropertyClasses/GrassCoverErosionInwardsCalculationsPropertiesTest.cs	(.../GrassCoverErosionInwardsCalculationsPropertiesTest.cs)	(revision a0a47e24c45537d82a6d1c7c3b402b1554b90b76)
@@ -56,33 +56,6 @@
         }
 
         [Test]
-        public void Constructor_DataIsNull_ThrowArgumentNullException()
-        {
-            // Setup
-            var handler = mocks.Stub<IFailureMechanismPropertyChangeHandler<GrassCoverErosionInwardsFailureMechanism>>();
-            mocks.ReplayAll();
-
-            // Call
-            void Call() => new GrassCoverErosionInwardsCalculationsProperties(null, handler);
-
-            // Assert
-            string paramName = Assert.Throws<ArgumentNullException>(Call).ParamName;
-            Assert.AreEqual("data", paramName);
-            mocks.VerifyAll();
-        }
-
-        [Test]
-        public void Constructor_ChangeHandlerIsNull_ThrowArgumentNullException()
-        {
-            // Call
-            void Call() => new GrassCoverErosionInwardsCalculationsProperties(new GrassCoverErosionInwardsFailureMechanism(), null);
-
-            // Assert
-            string paramName = Assert.Throws<ArgumentNullException>(Call).ParamName;
-            Assert.AreEqual("handler", paramName);
-        }
-
-        [Test]
         public void Constructor_ExpectedValues()
         {
             // Setup
@@ -102,8 +75,9 @@
             Assert.AreEqual(failureMechanism.Group, properties.Group);
             Assert.AreEqual(failureMechanism.Contribution, properties.Contribution);
 
-            var generalInput = new GeneralGrassCoverErosionInwardsInput();
+            GeneralGrassCoverErosionInwardsInput generalInput = failureMechanism.GeneralInput;
 
+            Assert.AreEqual(2, properties.N.NumberOfDecimalPlaces);
             Assert.AreEqual(generalInput.N, properties.N, properties.N.GetAccuracy());
 
             Assert.AreEqual(generalInput.FbFactor.Mean, properties.FbFactor.Mean);
@@ -224,6 +198,7 @@
             mocks.ReplayAll();
 
             var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
+
             var changeHandler = new FailureMechanismSetPropertyValueAfterConfirmationParameterTester<GrassCoverErosionInwardsFailureMechanism, double>(
                 failureMechanism,
                 newN,
@@ -249,7 +224,9 @@
 
         [Test]
         [TestCase(1.0)]
+        [TestCase(1.0000001)]        
         [TestCase(10.0)]
+        [TestCase(19.9999999)]        
         [TestCase(20.0)]
         public void N_SetValidValue_UpdateDataAndNotifyObservers(double newN)
         {
@@ -259,6 +236,7 @@
             mocks.ReplayAll();
 
             var failureMechanism = new GrassCoverErosionInwardsFailureMechanism();
+
             var changeHandler = new FailureMechanismSetPropertyValueAfterConfirmationParameterTester<GrassCoverErosionInwardsFailureMechanism, double>(
                 failureMechanism,
                 newN,
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Forms.Test/PropertyClasses/GrassCoverErosionInwardsFailureMechanismPropertiesTest.cs
===================================================================
diff -u -rf4a45a11e173eabd485d2bb1727c28a3d07a18d1 -ra0a47e24c45537d82a6d1c7c3b402b1554b90b76
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Forms.Test/PropertyClasses/GrassCoverErosionInwardsFailureMechanismPropertiesTest.cs	(.../GrassCoverErosionInwardsFailureMechanismPropertiesTest.cs)	(revision f4a45a11e173eabd485d2bb1727c28a3d07a18d1)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Forms.Test/PropertyClasses/GrassCoverErosionInwardsFailureMechanismPropertiesTest.cs	(.../GrassCoverErosionInwardsFailureMechanismPropertiesTest.cs)	(revision a0a47e24c45537d82a6d1c7c3b402b1554b90b76)
@@ -85,7 +85,7 @@
         }
 
         [Test]
-        public void Constructor_HandlerNull_ThrowsArgumentNullException()
+        public void Constructor_ChangeHandlerNull_ThrowsArgumentNullException()
         {
             // Call
             void Call() => new GrassCoverErosionInwardsFailureMechanismProperties(new GrassCoverErosionInwardsFailureMechanism(), new GrassCoverErosionInwardsFailureMechanismProperties.ConstructionProperties(), null);
@@ -222,7 +222,9 @@
 
         [Test]
         [TestCase(1.0)]
+        [TestCase(1.0000001)]        
         [TestCase(10.0)]
+        [TestCase(19.9999999)]        
         [TestCase(20.0)]
         public void N_SetValidValue_UpdateDataAndNotifyObservers(double newN)
         {
Index: Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Forms.Test/PropertyClasses/GrassCoverErosionInwardsFailurePathPropertiesTest.cs
===================================================================
diff -u -re2cba843b032cb2c87af83354f7ebd41e3b03027 -ra0a47e24c45537d82a6d1c7c3b402b1554b90b76
--- Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Forms.Test/PropertyClasses/GrassCoverErosionInwardsFailurePathPropertiesTest.cs	(.../GrassCoverErosionInwardsFailurePathPropertiesTest.cs)	(revision e2cba843b032cb2c87af83354f7ebd41e3b03027)
+++ Riskeer/GrassCoverErosionInwards/test/Riskeer.GrassCoverErosionInwards.Forms.Test/PropertyClasses/GrassCoverErosionInwardsFailurePathPropertiesTest.cs	(.../GrassCoverErosionInwardsFailurePathPropertiesTest.cs)	(revision a0a47e24c45537d82a6d1c7c3b402b1554b90b76)
@@ -64,14 +64,14 @@
         public void Constructor_ExpectedValues(bool isRelevant)
         {
             // Setup
+            var handler = mocks.Stub<IFailureMechanismPropertyChangeHandler<GrassCoverErosionInwardsFailureMechanism>>();
+            mocks.ReplayAll();
+            
             var failureMechanism = new GrassCoverErosionInwardsFailureMechanism
             {
                 IsRelevant = isRelevant
             };
 
-            var handler = mocks.Stub<IFailureMechanismPropertyChangeHandler<GrassCoverErosionInwardsFailureMechanism>>();
-            mocks.ReplayAll();
-
             // Call
             var properties = new GrassCoverErosionInwardsFailurePathProperties(failureMechanism, handler);
 
@@ -236,9 +236,11 @@
         }
 
         [Test]
-        [TestCase(1)]
-        [TestCase(10)]
-        [TestCase(20)]
+        [TestCase(1.0)]
+        [TestCase(1.0000001)]        
+        [TestCase(10.0)]
+        [TestCase(19.9999999)]        
+        [TestCase(20.0)]
         public void N_SetValidValue_UpdateDataAndNotifyObservers(double newN)
         {
             // Setup