Index: Riskeer/Common/test/Riskeer.Common.Data.Test/Hydraulics/HydraulicBoundaryDataExtensionsTest.cs
===================================================================
diff -u -rf3cb404c13baa021ecb3644e24b24a98e387526f -r9eb4d0e788145fada82e49592a83cf384ebe8770
--- Riskeer/Common/test/Riskeer.Common.Data.Test/Hydraulics/HydraulicBoundaryDataExtensionsTest.cs	(.../HydraulicBoundaryDataExtensionsTest.cs)	(revision f3cb404c13baa021ecb3644e24b24a98e387526f)
+++ Riskeer/Common/test/Riskeer.Common.Data.Test/Hydraulics/HydraulicBoundaryDataExtensionsTest.cs	(.../HydraulicBoundaryDataExtensionsTest.cs)	(revision 9eb4d0e788145fada82e49592a83cf384ebe8770)
@@ -217,5 +217,30 @@
                 location3
             }, locations);
         }
+
+        [Test]
+        public void GetHydraulicBoundaryDatabaseForLocation_HydraulicBoundaryDataNull_ThrowsArgumentNullException()
+        {
+            // Call
+            void Call() => HydraulicBoundaryDataExtensions.GetHydraulicBoundaryDatabaseForLocation(null, new TestHydraulicBoundaryLocation());
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(Call);
+            Assert.AreEqual("hydraulicBoundaryData", exception.ParamName);
+        }
+
+        [Test]
+        public void GetHydraulicBoundaryDatabaseForLocation_HydraulicBoundaryLocationNull_ThrowsArgumentNullException()
+        {
+            // Setup
+            var hydraulicBoundaryData = new HydraulicBoundaryData();
+
+            // Call
+            void Call() => hydraulicBoundaryData.GetHydraulicBoundaryDatabaseForLocation(null);
+
+            // Assert
+            var exception = Assert.Throws<ArgumentNullException>(Call);
+            Assert.AreEqual("hydraulicBoundaryLocation", exception.ParamName);
+        }
     }
 }
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