Added solution for "Day 23: A Long Walk", part 2

tests/ULongWalkTestCases.pas

@@ -1,6 +1,6 @@
 {
   Solutions to the Advent Of Code.
-  Copyright (C) 2023  Stefan Müller
+  Copyright (C) 2023-2024  Stefan Müller
 
   This program is free software: you can redistribute it and/or modify it under
   the terms of the GNU General Public License as published by the Free Software
@@ -33,6 +33,7 @@ type
     function CreateSolver: ISolver; override;
   published
     procedure TestPart1;
+    procedure TestPart2;
   end;
 
 implementation
@@ -49,6 +50,11 @@ begin
   AssertEquals(94, FSolver.GetResultPart1);
 end;
 
+procedure TLongWalkExampleTestCase.TestPart2;
+begin
+  AssertEquals(154, FSolver.GetResultPart2);
+end;
+
 initialization
 
   RegisterTest('TLongWalk', TLongWalkExampleTestCase);