tests/grid/test_template_observation.py

"""template emits a compact coordinate frame (not a full ASCII map)."""
from __future__ import annotations

import random

import proteus.game.scenarios  # noqa: F401
from proteus.game.engine.difficulty import Difficulty
from proteus.game.engine.grid import MotiveGridGame
from proteus.game.scenarios.base import get_scenario


def test_template_render_frame_is_compact():
    scenario = get_scenario("template")()
    game = MotiveGridGame(scenario, random.Random(42), Difficulty.EASY, max_steps=10)
    frame = scenario.render_frame(game)
    assert "Open field 64x64" in frame
    assert "Walls (blocked rectangles" in frame    # terrain described, not drawn
    # A few prose lines (coords + a wall rectangle list), nowhere near a
    # 4096-char ASCII map. Each non-empty line is itself short.
    assert len(frame) < 600
    assert all(len(line) < 300 for line in frame.splitlines())