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✅ Taurus applies def buff after local demon takes damage

CategoryAbility
StatusPassing
Testtests/test_abilities_passive.py::test_taurus_applies_def_buff_after_local_demon_takes_damage

After a local demon takes ≥1 damage, Taurus applies +2 DEF status.

Preconditions​

  • Lane 0: P1's Taurus (#052) — READIED

  • Lane 0: P2's Duban (#001) — READIED, 0 damage

  • No status effects

Action​

  • Fire DAMAGE_RECEIVED event: target=Duban, value=3 (effective damage)
from engine.events import GameEvent, EventType, fire_event
    from engine.operations import get_effective_def

    state = make_game_state()
    taurus = make_demon("052", lane=0, owner=Side.PLAYER_1)
    duban = make_demon("001", lane=0, owner=Side.PLAYER_2)
    state = place_demon(state, taurus)
    state = place_demon(state, duban)

    taurus_on_field = next(d for d in state.demons if d.unit_id == "052")
    duban_on_field = next(d for d in state.demons if d.unit_id == "001")

    event = GameEvent(
        event_type=EventType.DAMAGE_RECEIVED,
        source=taurus_on_field,
        target=duban_on_field,
        value=3,  # effective damage ≥ 1
        side=Side.PLAYER_2,
        lane=0,
    )
    new_state = fire_event(state, event)

    duban_after = next(d for d in new_state.demons if d.unit_id == "001")
    result = get_effective_def(new_state, duban_after)

Expected Postconditions​

  • Duban has +2 DEF status (expires end of current phase)

  • Duban effective DEF = 5 (passive) + 2 (Taurus status) = 7

Assertions​

assert result == 7, (
        f"Expected Duban DEF=7 (5 passive + 2 Taurus status), got {result}"
    )