Index: DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/GeneralHelper.cs
===================================================================
diff -u -r5597 -r5729
--- DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/GeneralHelper.cs	(.../GeneralHelper.cs)	(revision 5597)
+++ DamEngine/trunk/src/Deltares.DamEngine.TestHelpers/GeneralHelper.cs	(.../GeneralHelper.cs)	(revision 5729)
@@ -31,6 +31,7 @@
 using Deltares.DamEngine.Io;
 using Deltares.DamEngine.Io.XmlOutput;
 using DGeoSuite.Common;
+using KellermanSoftware.CompareNetObjects;
 using NUnit.Framework;
 
 namespace Deltares.DamEngine.TestHelpers;
@@ -210,4 +211,33 @@
 
         return 0;
     }
+
+    public static void CompareDesignOutput(Output expected, Output actual)
+    {
+        StripCalculationSubDir(expected);
+        StripCalculationSubDir(actual);
+        CompareOutput(expected, actual);
+    }
+
+    private static void StripCalculationSubDir(Output expected)
+    {
+        foreach (DesignResult result in expected.Results.CalculationResults)
+        {
+            result.CalculationSubDir = "";
+        }
+    }
+    
+    public static void CompareOutput(Output expected, Output actual)
+    {
+        var compare = new CompareLogic
+        {
+            Config =
+            {
+                MaxDifferences = 100
+            }
+        };
+        ComparisonResult result = compare.Compare(expected, actual);
+        Assert.That(result.Differences, Is.Empty, "Differences found read/write Output object");
+    }
+    
 }
\ No newline at end of file