Index: Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/PipingInputContextPropertiesTest.cs
===================================================================
diff -u -r487d53ee7ab88f79d75c4932266eaafe08df1a56 -recb753a5b17dd2e9cb0658ffb5a0a6d5a730c62f
--- Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/PipingInputContextPropertiesTest.cs	(.../PipingInputContextPropertiesTest.cs)	(revision 487d53ee7ab88f79d75c4932266eaafe08df1a56)
+++ Ringtoets/Piping/test/Ringtoets.Piping.Forms.Test/PropertyClasses/PipingInputContextPropertiesTest.cs	(.../PipingInputContextPropertiesTest.cs)	(revision ecb753a5b17dd2e9cb0658ffb5a0a6d5a730c62f)
@@ -80,7 +80,7 @@
             mocks.ReplayAll();
 
             // Call
-            TestDelegate test = () => new PipingInputContextProperties(null, handler);
+            TestDelegate test = () => new PipingInputContextProperties(null, () => (RoundedDouble) 1.1, handler);
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(test);
@@ -89,11 +89,12 @@
         }
 
         [Test]
-        public void Constructor_HandlerNull_ThrowArgumentNullException()
+        public void Constructor_GetAssessmentLevelFuncNull_ThrowArgumentNullException()
         {
             // Setup
             var mocks = new MockRepository();
             var assessmentSection = mocks.Stub<IAssessmentSection>();
+            var handler = mocks.Stub<IObservablePropertyChangeHandler>();
             mocks.ReplayAll();
 
             var calculationItem = new PipingCalculationScenario(new GeneralPipingInput());
@@ -107,15 +108,42 @@
                                                  assessmentSection);
 
             // Call
-            TestDelegate test = () => new PipingInputContextProperties(context, null);
+            TestDelegate test = () => new PipingInputContextProperties(context, null, handler);
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(test);
-            Assert.AreEqual("handler", exception.ParamName);
+            Assert.AreEqual("getAssessmentLevelFunc", exception.ParamName);
             mocks.VerifyAll();
         }
 
         [Test]
+        public void Constructor_PropertyChangeHandlerNull_ThrowArgumentNullException()
+        {
+            // Setup
+            var mocks = new MockRepository();
+            var assessmentSection = mocks.Stub<IAssessmentSection>();
+            mocks.ReplayAll();
+
+            var calculationItem = new PipingCalculationScenario(new GeneralPipingInput());
+            var failureMechanism = new PipingFailureMechanism();
+
+            var context = new PipingInputContext(calculationItem.InputParameters,
+                                                 calculationItem,
+                                                 Enumerable.Empty<PipingSurfaceLine>(),
+                                                 Enumerable.Empty<PipingStochasticSoilModel>(),
+                                                 failureMechanism,
+                                                 assessmentSection);
+
+            // Call
+            TestDelegate test = () => new PipingInputContextProperties(context, () => (RoundedDouble) 1.1, null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("propertyChangeHandler", exception.ParamName);
+            mocks.VerifyAll();
+        }
+
+        [Test]
         public void Constructor_WithParameters_ExpectedValues()
         {
             var mocks = new MockRepository();