def test_various_index_errors():
""" Some things that won'f work with input outside grid. """
board = Board(4, 2, 3, 3)
with pytest.raises(IndexError):
board._Board__init_next_gen(10, 10)
with pytest.raises(IndexError):
board._Board__update_binary_grid(10, 10, 1)
with pytest.raises(IndexError):
board._Board__revive_next_gen(10, 10)
