Index: Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.IO.Test/Model/SerializableAssessmentSectionTest.cs
===================================================================
diff -u -rd3b53b68914f5cead6eaf7b008168b29b2bd5754 -ra30b67748bed77736f62b6b3c30c82649bb9cf4e
--- Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.IO.Test/Model/SerializableAssessmentSectionTest.cs	(.../SerializableAssessmentSectionTest.cs)	(revision d3b53b68914f5cead6eaf7b008168b29b2bd5754)
+++ Ringtoets/AssemblyTool/test/Ringtoets.AssemblyTool.IO.Test/Model/SerializableAssessmentSectionTest.cs	(.../SerializableAssessmentSectionTest.cs)	(revision a30b67748bed77736f62b6b3c30c82649bb9cf4e)
@@ -22,6 +22,7 @@
 using System;
 using System.Linq;
 using Core.Common.Base.Geometry;
+using Core.Common.TestUtil;
 using NUnit.Framework;
 using Ringtoets.AssemblyTool.IO.Model;
 using Ringtoets.AssemblyTool.IO.TestUtil;
@@ -61,16 +62,18 @@
         }
 
         [Test]
-        public void Constructor_IdNull_ThrowsArgumentNullException()
+        [TestCase(null)]
+        [TestCase("")]
+        public void Constructor_IdInvalid_ThrowsArgumentException(string id)
         {
             // Call
-            TestDelegate call = () => new SerializableAssessmentSection(null,
-                                                                        "name",
+            TestDelegate call = () => new SerializableAssessmentSection(id,
+                                                                        string.Empty,
                                                                         Enumerable.Empty<Point2D>());
 
             // Assert
-            var exception = Assert.Throws<ArgumentNullException>(call);
-            Assert.AreEqual("id", exception.ParamName);
+            const string expectedMessage = "'id' must have a value.";
+            TestHelper.AssertThrowsArgumentExceptionAndTestMessage<ArgumentException>(call, expectedMessage);
         }
 
         [Test]