Index: Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Assembly/ExportableAssessmentSectionTest.cs
===================================================================
diff -u -r719d0e6a2b96f912e844a16cfc96c4f7c8da62b7 -rfcb1a3246cfb27c4078ffc52215d71a340e02ea7
--- Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Assembly/ExportableAssessmentSectionTest.cs	(.../ExportableAssessmentSectionTest.cs)	(revision 719d0e6a2b96f912e844a16cfc96c4f7c8da62b7)
+++ Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Assembly/ExportableAssessmentSectionTest.cs	(.../ExportableAssessmentSectionTest.cs)	(revision fcb1a3246cfb27c4078ffc52215d71a340e02ea7)
@@ -22,15 +22,14 @@
                 Enumerable.Empty<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResultWithProbability>>();
             IEnumerable<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResult>> failureMechanismsWithoutProbability =
                 Enumerable.Empty<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResult>>();
-            IEnumerable<ExportableCombinedSectionAssembly> combinedSectionAssemblyResults = Enumerable.Empty<ExportableCombinedSectionAssembly>();
 
             // Call
             TestDelegate call = () => new ExportableAssessmentSection(null,
                                                                       geometry,
                                                                       assessmentSectionAssembly,
                                                                       failureMechanismsWithProbability,
                                                                       failureMechanismsWithoutProbability,
-                                                                      combinedSectionAssemblyResults);
+                                                                      CreateCombinedSectionAssemblyCollection());
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(call);
@@ -46,15 +45,14 @@
                 Enumerable.Empty<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResultWithProbability>>();
             IEnumerable<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResult>> failureMechanismsWithoutProbability =
                 Enumerable.Empty<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResult>>();
-            IEnumerable<ExportableCombinedSectionAssembly> combinedSectionAssemblyResults = Enumerable.Empty<ExportableCombinedSectionAssembly>();
 
             // Call
             TestDelegate call = () => new ExportableAssessmentSection(string.Empty,
                                                                       null,
                                                                       assessmentSectionAssembly,
                                                                       failureMechanismsWithProbability,
                                                                       failureMechanismsWithoutProbability,
-                                                                      combinedSectionAssemblyResults);
+                                                                      CreateCombinedSectionAssemblyCollection());
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(call);
@@ -70,15 +68,14 @@
                 Enumerable.Empty<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResultWithProbability>>();
             IEnumerable<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResult>> failureMechanismsWithoutProbability =
                 Enumerable.Empty<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResult>>();
-            IEnumerable<ExportableCombinedSectionAssembly> combinedSectionAssemblyResults = Enumerable.Empty<ExportableCombinedSectionAssembly>();
 
             // Call
             TestDelegate call = () => new ExportableAssessmentSection(string.Empty,
                                                                       geometry,
                                                                       null,
                                                                       failureMechanismsWithProbability,
                                                                       failureMechanismsWithoutProbability,
-                                                                      combinedSectionAssemblyResults);
+                                                                      CreateCombinedSectionAssemblyCollection());
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(call);
@@ -93,15 +90,14 @@
             ExportableAssessmentSectionAssemblyResult assessmentSectionAssembly = CreateAssessmentSectionAssembly();
             IEnumerable<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResult>> failureMechanismsWithoutProbability =
                 Enumerable.Empty<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResult>>();
-            IEnumerable<ExportableCombinedSectionAssembly> combinedSectionAssemblyResults = Enumerable.Empty<ExportableCombinedSectionAssembly>();
 
             // Call
             TestDelegate call = () => new ExportableAssessmentSection(string.Empty,
                                                                       geometry,
                                                                       assessmentSectionAssembly,
                                                                       null,
                                                                       failureMechanismsWithoutProbability,
-                                                                      combinedSectionAssemblyResults);
+                                                                      CreateCombinedSectionAssemblyCollection());
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(call);
@@ -116,15 +112,14 @@
             ExportableAssessmentSectionAssemblyResult assessmentSectionAssembly = CreateAssessmentSectionAssembly();
             IEnumerable<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResultWithProbability>> failureMechanismsWithProbability =
                 Enumerable.Empty<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResultWithProbability>>();
-            IEnumerable<ExportableCombinedSectionAssembly> combinedSectionAssemblyResults = Enumerable.Empty<ExportableCombinedSectionAssembly>();
 
             // Call
             TestDelegate call = () => new ExportableAssessmentSection(string.Empty,
                                                                       geometry,
                                                                       assessmentSectionAssembly,
                                                                       failureMechanismsWithProbability,
                                                                       null,
-                                                                      combinedSectionAssemblyResults);
+                                                                      CreateCombinedSectionAssemblyCollection());
 
             // Assert
             var exception = Assert.Throws<ArgumentNullException>(call);
@@ -167,7 +162,7 @@
                 Enumerable.Empty<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResultWithProbability>>();
             IEnumerable<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResult>> failureMechanismsWithoutProbability =
                 Enumerable.Empty<ExportableFailureMechanism<ExportableFailureMechanismAssemblyResult>>();
-            IEnumerable<ExportableCombinedSectionAssembly> combinedSectionAssemblyResults = Enumerable.Empty<ExportableCombinedSectionAssembly>();
+            ExportableCombinedSectionAssemblyCollection combinedSectionAssemblyResults = CreateCombinedSectionAssemblyCollection();
 
             // Call
             var assessmentSection = new ExportableAssessmentSection(name,
@@ -186,6 +181,12 @@
             Assert.AreSame(combinedSectionAssemblyResults, assessmentSection.CombinedSectionAssemblyResults);
         }
 
+        private static ExportableCombinedSectionAssemblyCollection CreateCombinedSectionAssemblyCollection()
+        {
+            return new ExportableCombinedSectionAssemblyCollection(Enumerable.Empty<ExportableCombinedFailureMechanismSection>(),
+                                                                   Enumerable.Empty<ExportableCombinedSectionAssembly>());
+        }
+
         private static ExportableAssessmentSectionAssemblyResult CreateAssessmentSectionAssembly()
         {
             var random = new Random(21);