Index: Ringtoets/Common/test/Ringtoets.Common.Data.Test/UpdateDataStrategies/ReplaceDataStrategyBaseTest.cs
===================================================================
diff -u -r9540d67453c6a1caf5833d64ab651660dce11595 -r42357a100d1a75baca233aa44b866a5009f48e00
--- Ringtoets/Common/test/Ringtoets.Common.Data.Test/UpdateDataStrategies/ReplaceDataStrategyBaseTest.cs	(.../ReplaceDataStrategyBaseTest.cs)	(revision 9540d67453c6a1caf5833d64ab651660dce11595)
+++ Ringtoets/Common/test/Ringtoets.Common.Data.Test/UpdateDataStrategies/ReplaceDataStrategyBaseTest.cs	(.../ReplaceDataStrategyBaseTest.cs)	(revision 42357a100d1a75baca233aa44b866a5009f48e00)
@@ -33,25 +33,28 @@
     [TestFixture]
     public class ReplaceDataStrategyBaseTest
     {
+        
+
         [Test]
         public void Constructor_FailureMechanismNull_ThrowsArgumentNullException()
         {
             // Call
-            TestDelegate call = () => new ConcreteStrategyClass(null, null);
+            TestDelegate call = () => new ConcreteStrategyClass(null, new TestUniqueItemCollection());
 
             // Assert
             string paramName = Assert.Throws<ArgumentNullException>(call).ParamName;
             Assert.AreEqual("failureMechanism", paramName);
         }
 
         [Test]
-        public void Constructor_FailureMechanisNotNull_DoesNotThrowException()
+        public void Constructor_TargetCollectionNull_ThrowsArgumentNullException()
         {
             // Call
             TestDelegate call = () => new ConcreteStrategyClass(new TestFailureMechanism(), null);
 
             // Assert
-            Assert.DoesNotThrow(call);
+            string paramName = Assert.Throws<ArgumentNullException>(call).ParamName;
+            Assert.AreEqual("targetCollection", paramName);
         }
 
         [Test]