def testCollidingSums(self):
     expected_board = [[0, 2, 0], [1, 2, 1], [0, 0, 0]]
     test_board = Board(3,3)
     test_board.sum_surrounding(0, 0)
     test_board.sum_surrounding(2, 0)
     observed_board = test_board.board
     self.assertEqual(expected_board, observed_board)
 def testLoneCell(self):
     expected_board = [[1,1,1],[1,0,1],[1,1,1]]
     test_board = Board(3,3)
     test_board.sum_surrounding(1,1)
     observed_board = test_board.board
     self.assertEqual(expected_board, observed_board)