Index: Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.TestUtil.Test/ClosingStructurePermutationHelperTest.cs
===================================================================
diff -u -r6949918830314633db5cc8c16bb2188779fffc93 -r16559315c0a64fffd05827d249200c62e353231f
--- Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.TestUtil.Test/ClosingStructurePermutationHelperTest.cs	(.../ClosingStructurePermutationHelperTest.cs)	(revision 6949918830314633db5cc8c16bb2188779fffc93)
+++ Ringtoets/ClosingStructures/test/Ringtoets.ClosingStructures.Data.TestUtil.Test/ClosingStructurePermutationHelperTest.cs	(.../ClosingStructurePermutationHelperTest.cs)	(revision 16559315c0a64fffd05827d249200c62e353231f)
@@ -78,9 +78,7 @@
 
         private static void AssertTestNames(IEnumerable<TestCaseData> testCaseData, string targetName, string testResultDescription)
         {
-            IEnumerable<string> testNames = testCaseData
-                .Select(tcd => tcd.TestName)
-                .ToArray();
+            IEnumerable<string> testNames = testCaseData.Select(tcd => tcd.TestName);
             Assert.AreEqual(testCaseData.Count(), testNames.Distinct().Count());
             Assert.IsTrue(testNames.All(tn => tn.StartsWith($"{targetName}_")));
             Assert.IsTrue(testNames.All(tn => tn.EndsWith($"_{testResultDescription}")));