### Question:
SudokuBoardManager implements Serializable { boolean puzzleSolved() { if (sudokuBoard.getNumCellFilled() != 81) { return false; } for (int i = 0; i < 9; i++) { for (int j = 0; j < 9; j++) { int num = sudokuBoard.getCellNum(i, j); if (!CheckIfSafe(i, j, num)) { return false; } } } return true; } SudokuBoardManager(User user, int numMissingDigit); User getUser();  }### Answer:
@Test public void testpuzzleSolved() { SudokuBoardManager bm = new SudokuBoardManager(user, 81); board.setNumCellFilled(81); bm.setSudokuBoard(board); assertTrue(bm.puzzleSolved()); }