Index: Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Helpers/UniqueIdentifierGeneratorTest.cs
===================================================================
diff -u -r77af63e3ae290bffd192ac96059661e15181c775 -r0df4def16c2d4e4cb3be9a65fc94422a602d330c
--- Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Helpers/UniqueIdentifierGeneratorTest.cs	(.../UniqueIdentifierGeneratorTest.cs)	(revision 77af63e3ae290bffd192ac96059661e15181c775)
+++ Ringtoets/Integration/test/Ringtoets.Integration.IO.Test/Helpers/UniqueIdentifierGeneratorTest.cs	(.../UniqueIdentifierGeneratorTest.cs)	(revision 0df4def16c2d4e4cb3be9a65fc94422a602d330c)
@@ -19,7 +19,6 @@
 // Stichting Deltares and remain full property of Stichting Deltares at all times.
 // All rights reserved.
 
-using System.Collections.Generic;
 using NUnit.Framework;
 using Ringtoets.Integration.IO.Helpers;
 
@@ -35,24 +34,24 @@
             var generator = new UniqueIdentifierGenerator();
 
             // Call
-            int id = generator.GetNewId();
+            string id = generator.GetNewId();
 
             // Assert
-            Assert.Zero(id);
+            Assert.AreEqual("0", id);
         }
 
         [Test]
         public void GivenGeneratedId_WhenGetNewIdCalled_ThenNewIdGenerated()
         {
             // Given
             var generator = new UniqueIdentifierGenerator();
-            int currentId = generator.GetNewId();
+            string currentId = generator.GetNewId();
 
             // Precondition
-            Assert.Zero(currentId);
+            Assert.AreEqual("0", currentId);
 
             // When
-            var generatedIds = new List<int>
+            string[] generatedIds =
             {
                 generator.GetNewId(),
                 generator.GetNewId()
@@ -61,8 +60,8 @@
             // Then
             CollectionAssert.AreEqual(new[]
             {
-                1,
-                2
+                "1",
+                "2"
             }, generatedIds);
         }
     }