def test_alt_diagonal_data(self):
   b = Board.reverse(Board.parse(testdata_owondr))
   expect(Board.diagonal(b)) == ['T', 'O', 'O', 'O']
 def test_diagonal_data(self):
   b = Board.parse(testdata_owondl)
   expect(Board.diagonal(b)) == ['O', 'O', 'O', 'O']