Index: Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.IO/Properties/AssemblyInfo.cs
===================================================================
diff -u -rf88343c0590cb04c7135ce141872940e59325927 -r12ccd3dc7621c2cfc790f71e2b49f7acfdce04e1
--- Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.IO/Properties/AssemblyInfo.cs	(.../AssemblyInfo.cs)	(revision f88343c0590cb04c7135ce141872940e59325927)
+++ Ringtoets/ClosingStructures/src/Ringtoets.ClosingStructures.IO/Properties/AssemblyInfo.cs	(.../AssemblyInfo.cs)	(revision 12ccd3dc7621c2cfc790f71e2b49f7acfdce04e1)
@@ -20,8 +20,10 @@
 // All rights reserved.
 
 using System.Reflection;
+using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 
 [assembly: AssemblyTitle("Ringtoets.ClosingStructures.IO")]
 [assembly: AssemblyProduct("Ringtoets.ClosingStructures.IO")]
-[assembly: Guid("2579c8ca-3648-409e-b77c-47773c86d1ad")]
\ No newline at end of file
+[assembly: Guid("2579c8ca-3648-409e-b77c-47773c86d1ad")]
+[assembly: InternalsVisibleTo("Ringtoets.ClosingStructures.IO.Test")]
\ No newline at end of file