def test_get_sequence():
board = Board()
board[0][0] = 'C'
board[1][0] = 'C'
ns_seq = board.get_sequence(0, 0, 3, 'NS')
assert ns_seq == {
'values': ['C', 'C', 'O'],
'indices': [(0, 0), (1, 0), (2, 0)]
}
ew_seq = board.get_sequence(0, 0, 2, 'EW')
assert ew_seq == {'values': ['C', 'O'], 'indices': [(0, 0), (0, 1)]}
def test_get_sequence_exc():
board = Board()
with pytest.raises(ValueError) as excinfo:
board.get_sequence(0, 0, 2, 'SE')
assert 'invalid direction' in str(excinfo.value)
