app/src/main/java/sudoku/Solver.java

@@ -20,18 +20,10 @@ public class Solver implements SudokuSolver {
         this.board = board;
     }
 
-    /**
-     * {@inheritDoc}
-     * <p>
-     * Note that this returns a copy of the board, not the actual board
-     */
+    /** {@inheritDoc} */
     @Override
     public int[][] getBoard() {
-        int[][] copy = new int[9][9];
-        for (int row = 0; row < 9; row++) {
-            System.arraycopy(board[row], 0, copy[row], 0, 9);
-        }
-        return copy;
+        return board;
     }
 
     /** Resets the board to all zeros */
@@ -42,6 +34,7 @@ public class Solver implements SudokuSolver {
                 row[i] = 0;
             }
         }
+        // board = new int[9][9];
     }
 
     /* {@inheritDoc} */
@@ -127,8 +120,8 @@ public class Solver implements SudokuSolver {
         }
     }
 
-    /**
-     * {@inheritDoc}
+    /** 
+     * {@inheritDoc} 
      * <p>
      * This is <b>not</b> checked for validity
      */

app/src/test/java/sudoku/SolverTest.java

@@ -17,12 +17,8 @@ class SolverTest {
         Solver solver = new Solver();
         int[][] board = new int[9][9];
         solver.setBoard(board);
-
-        for (int row = 0; row < 9; row++) {
-            assertArrayEquals(board[row], solver.getBoard()[row]);
-        }
+        assertEquals(board, solver.getBoard());
     }
-    
 
     @Test
     void randomizeBoardTest() {
@@ -32,12 +28,6 @@ class SolverTest {
         assertNotEquals(board, solver.getBoard());
     }
 
-    @Test
-    void emptyTest() {
-        Solver solver = new Solver();
-        assertTrue(solver.solve());
-    }
-
     @Test
     void legalTest() {
         Solver solver = new Solver();