@Test
    public void allNeughboursHaveBombs(){
        Board board = new Board(3);
        board.setCellBomb(0, 0, true);
        board.setCellBomb(0, 1, true);
        board.setCellBomb(0, 2, true);
        board.setCellBomb(1, 0, true);
        board.setCellBomb(1, 2, true);
        board.setCellBomb(2, 0, true);
        board.setCellBomb(2, 1, true);
        board.setCellBomb(2, 2, true);
        int output = board.countBombs(1, 1);
        int expected = 8;
        assertEquals(expected, output);
    }