tests/test_player_move.py

"""Tests for the queued player-move turn hook. No GPU/Gradio.

Run:  python -m pytest tests/ -q
"""

import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parents[1]))

from ttw.dummy import make_random_policy
from ttw.game import Game


def _game():
    return Game(make_random_policy(seed=3), deck_seed=1)


def _total_pebbles(world):
    return sum(c.pebbles for c in world.alive())


def _player_moves(world):
    return [e for e in world.log if e["type"] == "player_move"]


def test_queued_move_emits_event_and_clears_queue():
    g = _game()
    g.queue_player_move("noop")
    assert g.world.pending_moves  # queued, not yet stepped
    g.step()
    moves = _player_moves(g.world)
    assert len(moves) == 1
    assert moves[0]["move"] == "noop"
    assert moves[0]["turn"] == 1
    assert g.world.pending_moves == []  # drained


def test_step_without_queued_move_emits_no_player_move():
    """v1 regression guard: an empty queue must not produce a player_move event."""
    g = _game()
    g.step()
    assert _player_moves(g.world) == []


def test_queued_noop_preserves_pebble_conservation():
    g = _game()
    before = _total_pebbles(g.world)
    g.queue_player_move("noop")
    g.step()
    assert _total_pebbles(g.world) == before