Index: Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/PersistenceRegistryTest.cs
===================================================================
diff -u -r268d5940d8ed4a65319179de7515eaf89586ad0a -rcf2b4ca40987c1f035b244cc80a382a2bf2cc12b
--- Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/PersistenceRegistryTest.cs	(.../PersistenceRegistryTest.cs)	(revision 268d5940d8ed4a65319179de7515eaf89586ad0a)
+++ Application/Ringtoets/test/Application.Ringtoets.Storage.Test/Create/PersistenceRegistryTest.cs	(.../PersistenceRegistryTest.cs)	(revision cf2b4ca40987c1f035b244cc80a382a2bf2cc12b)
@@ -378,6 +378,7 @@
             /// model is registered in the registry.</param>
             /// <param name="getFromRegistry">The action to perform to get the data model from
             ///  the registry.</param>
+            /// <exception cref="ArgumentNullException">Thrown when any input parameter is <c>null</c>.</exception>
             /// <example>public DerivedRegistryTest() : base(
             /// (r, e, m) => r.Register(e, m),
             /// (r, m) => r.Contains(m),
@@ -386,6 +387,19 @@
                                    Func<PersistenceRegistry, TDataModel, bool> containsInRegistry,
                                    Func<PersistenceRegistry, TDataModel, TEntity> getFromRegistry)
             {
+                if (registerToRegistry == null)
+                {
+                    throw new ArgumentNullException(nameof(registerToRegistry));
+                }
+                if (containsInRegistry == null)
+                {
+                    throw new ArgumentNullException(nameof(containsInRegistry));
+                }
+                if (getFromRegistry == null)
+                {
+                    throw new ArgumentNullException(nameof(getFromRegistry));
+                }
+
                 this.registerToRegistry = registerToRegistry;
                 this.containsInRegistry = containsInRegistry;
                 this.getFromRegistry = getFromRegistry;