Finished tests

test/search/breadthfirstsearch/BreadthFirstSearchTest.java

@@ -0,0 +1,14 @@
+package search.breadthfirstsearch;
+
+import org.junit.jupiter.api.Test;
+
+import static org.junit.jupiter.api.Assertions.*;
+
+class BreadthFirstSearchTest
+{
+    @Test
+    void shouldReturnCorrectTarget()
+    {
+
+    }
+}

test/search/breadthfirstsearch/EightPuzzleNodeTest.java

@@ -3,10 +3,9 @@ package search.breadthfirstsearch;
 import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
+import java.util.Arrays;
 import java.util.List;
 
-import static org.junit.jupiter.api.Assertions.*;
-
 class EightPuzzleNodeTest
 {
     @Test
@@ -84,4 +83,45 @@ class EightPuzzleNodeTest
         Assertions.assertFalse(successors.isEmpty());
     }
 
+    @Test
+    public void shouldReturnEmptyListOfSuccessors()
+    {
+    }
+
+    @Test
+    public void shouldReturnCorrectSuccessors()
+    {
+        int[][] state = {
+                {7, 1, 6},
+                {0, 4, 2},
+                {3, 5, 8}
+        };
+
+        var node = new EightPuzzleNode(state);
+        var successors = node.generateSuccessors();
+
+        Assertions.assertEquals(3, successors.size());
+
+        int[][] newState1 = {
+                {0, 1, 6},
+                {7, 4, 2},
+                {3, 5, 8}
+        };
+
+        int[][] newState2 = {
+                {7, 1, 6},
+                {4, 0, 2},
+                {3, 5, 8}
+        };
+
+        int[][] newState3 = {
+                {7, 1, 6},
+                {3, 4, 2},
+                {0, 5, 8}
+        };
+
+        Assertions.assertArrayEquals(newState1, ((EightPuzzleNode) successors.get(0)).getState());
+        Assertions.assertArrayEquals(newState2, ((EightPuzzleNode) successors.get(1)).getState());
+        Assertions.assertArrayEquals(newState3, ((EightPuzzleNode) successors.get(2)).getState());
+    }
 }