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✅ Regular familiar still cannot fuse

CategoryAbility
StatusPassing
Testtests/test_abilities_familiars.py::test_regular_familiar_still_cannot_fuse

A regular familiar (not in FUSIBLE_FAMILIARS) cannot be fused.

Preconditions​

  • Lane 0: P1's Duban (#001) — regular unit, READIED.

  • Lane 0: P1's Alecto (#026_1) — regular familiar (Erinyes, no fusible override).

Action​

  • can_fuse(state, duban, alecto)
from engine.fusion import can_fuse

    state = make_game_state()

    duban = make_demon("001", lane=0, owner=Side.PLAYER_1)
    state = place_demon(state, duban)
    duban = state.demons[-1]

    alecto = make_familiar_demon("026_1", lane=0, owner=Side.PLAYER_1)
    state = place_demon(state, alecto)
    alecto = state.demons[-1]

    ok, reason = can_fuse(state, duban, alecto)

Expected Postconditions​

  • (False, <contains "familiar">) — normal familiars still blocked.

  • Regression: ensuring the FUSIBLE_FAMILIARS exception doesn't open all familiars.

Assertions​

assert ok is False, (
        f"Regular familiar Alecto should NOT be fusible. Got ok={ok}"
    )
    assert "familiar" in reason.lower(), (
        f"Rejection reason should mention 'familiar'. Got: {reason!r}"
    )