Add some fun stuff

test/search/GameHelperTest.java

@@ -7,6 +7,28 @@ import static search.SearchTestUtils.printSolution;
 
 public class GameHelperTest
 {
+    @Test
+    void shouldReturnCorrectTargetDemonologist()
+    {
+        final int[][] state = {
+                {8, 4 ,0},
+                {6, 3, 1},
+                {2, 5, 7}
+        };
+        final var root = new EightPuzzleNode(state);
+
+        final int[][] targetState = {
+                {1, 2, 3},
+                {4, 5, 6},
+                {7, 8, 0}
+        };
+        final var expected = new EightPuzzleNode(targetState);
+
+        final var actual = new IterativeDeepening().iterativeDeepening(root, expected);
+
+        printSolution(actual);
+    }
+
     @Test
     void shouldReturnCorrectTargetWartales()
     {