Index: Ringtoets/Common/test/Ringtoets.Common.Service.Test/WaveHeightCalculationServiceTest.cs
===================================================================
diff -u -r7dce1ceb498815baa3486f459710c77327d4ef10 -rd79f0f4aa80c99ba45a7ff3a502b5437975f7b58
--- Ringtoets/Common/test/Ringtoets.Common.Service.Test/WaveHeightCalculationServiceTest.cs	(.../WaveHeightCalculationServiceTest.cs)	(revision 7dce1ceb498815baa3486f459710c77327d4ef10)
+++ Ringtoets/Common/test/Ringtoets.Common.Service.Test/WaveHeightCalculationServiceTest.cs	(.../WaveHeightCalculationServiceTest.cs)	(revision d79f0f4aa80c99ba45a7ff3a502b5437975f7b58)
@@ -164,7 +164,7 @@
             mockRepository.ReplayAll();
 
             // Call
-            TestDelegate test = () => new WaveHeightCalculationService().Calculate(new TestHydraulicBoundaryLocation(), 
+            TestDelegate test = () => new WaveHeightCalculationService().Calculate(new TestHydraulicBoundaryLocation(),
                                                                                    null,
                                                                                    testDataPath,
                                                                                    validPreprocessorDirectory,
@@ -177,6 +177,22 @@
         }
 
         [Test]
+        public void Calculate_MessageProviderNull_ThrowArgumentNullException()
+        {
+            // Call
+            TestDelegate test = () => new WaveHeightCalculationService().Calculate(new TestHydraulicBoundaryLocation(),
+                                                                                   new HydraulicBoundaryLocationCalculation(),
+                                                                                   string.Empty,
+                                                                                   string.Empty,
+                                                                                   1,
+                                                                                   null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(test);
+            Assert.AreEqual("messageProvider", exception.ParamName);
+        }
+
+        [Test]
         [TestCase(true)]
         [TestCase(false)]
         public void Calculate_ValidWaveHeightCalculationAndConverges_StartsCalculationWithRightParametersAndLogs(bool readIllustrationPoints)