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✅ Three fusions deal 18 fixed damage

CategoryInteraction
StatusPassing
Testtests/test_abilities_complex.py::TestDantalionMultiFusionDamageStacks::test_three_fusions_deal_18_fixed_damage

Three demons fuse onto Dantalion sequentially. Each fusion

Preconditions​

  • Lane 0: P1's Dantalion (#106, HP=15) — 0 damage

  • Lane 0: P1's Murmur (#002) — fusible ally

  • Lane 0: P1's Sabnock (#003) — fusible ally

  • Lane 0: P1's Flauros (#013) — fusible ally

Action​

  • fuse_demons(state, dantalion, murmur) → +6 damage (6 total)

  • fuse_demons(state, dantalion, sabnock) → +6 damage (12 total)

  • fuse_demons(state, dantalion, flauros) → +6 damage (18 total)

from engine.fusion import fuse_demons

        dantalion = make_demon("106", lane=0, owner=Side.PLAYER_1)
        murmur = make_demon("002", lane=0, owner=Side.PLAYER_1)
        sabnock = make_demon("003", lane=0, owner=Side.PLAYER_1)
        flauros = make_demon("013", lane=0, owner=Side.PLAYER_1)

        state, placed = _make_state_with_demons(dantalion, murmur, sabnock, flauros)
        dantalion_p, murmur_p, sabnock_p, flauros_p = placed

        # Fusion 1
        state = fuse_demons(state, dantalion_p, murmur_p)
        dantalion_p = next(d for d in state.demons if d.unit_id == "106")

Expected Postconditions​

  • Dantalion.damage == 18

  • Dantalion.fused_bottom contains "002", "003", "013"

  • Dantalion is fatally_wounded (damage 18 >= HP 15 after fhp buffs:

  • HP = 15 + 3 (Murmur) + 9 (Sabnock) + 9 (Flauros) = 36; 18 < 36 so NOT fatally wounded)

Assertions​

assert dantalion_p.damage == 6, f"After 1 fusion: 6 damage. Got {dantalion_p.damage}."

        # Fusion 2 — find sabnock in current state
        sabnock_p = next(d for d in state.demons if d.unit_id == "003")
        state = fuse_demons(state, dantalion_p, sabnock_p)
        dantalion_p = next(d for d in state.demons if d.unit_id == "106")
        assert dantalion_p.damage == 12, f"After 2 fusions: 12 damage. Got {dantalion_p.damage}."

        # Fusion 3
        flauros_p = next(d for d in state.demons if d.unit_id == "013")
        state = fuse_demons(state, dantalion_p, flauros_p)
        dantalion_p = next(d for d in state.demons if d.unit_id == "106")
        assert dantalion_p.damage == 18, f"After 3 fusions: 18 damage. Got {dantalion_p.damage}."

        bottoms = set(b.strip() for b in (dantalion_p.fused_bottom or "").split(","))
        assert bottoms == {"002", "003", "013"}, (
            f"Dantalion fused_bottom must contain all three. Got {bottoms}."
        )