def test_utility_raises_exception_on_non_terminal_input_state(
self, size, state, mocker):
rows, columns = size
mock_is_terminal = mocker.MagicMock(return_value=False)
mock_game = mocker.MagicMock(rows=rows,
columns=columns,
is_terminal=mock_is_terminal)
with pytest.raises(ValueError) as exception_info:
NoughtsAndCrosses.utility(mock_game, state)
assert str(exception_info.value) == ("Utility can not be calculated "
"for a non-terminal state.")
mock_is_terminal.assert_called_once_with(state)
def test_utility_function_returns_correct_outcomes(self, size,
win_bitmasks, state,
outcome, mocker):
rows, columns = size
mock_game = mocker.MagicMock(rows=rows,
columns=columns,
_win_bitmasks=win_bitmasks)
assert NoughtsAndCrosses.utility(mock_game, state) == outcome
print("You are player: {}".format(human_player_no))
while not nac.is_terminal(state):
player_no = nac.current_player(state)
next_states = nac.legal_actions(state)
if player_no == computer_player_no:
action = computer_player.choose_action(state)
computer_player.update(action)
print("Taking action: {}".format(action))
else:
action = None
while action not in next_states:
action_ix = int(
input("Your move (0-8 reading "
"across the board): "))
if 0 <= action_ix <= 8:
action = nac.ACTION_SPACE[action_ix]
computer_player.update(action)
state = next_states[action]
nac.display(state)
print("\n")
# The state is terminal, so let's see who won.
utility = nac.utility(state)
if utility[human_player_no] == 1:
print("You win!")
elif utility[human_player_no] == 0:
print("It's a draw!")
else:
print("You lose!")