"""Golden tests for WEEKLY_LEGACY_TRANSFER_PLAN_V1 (governance/todo/v8_9_p3_adoption_plan.yaml P3-E).

Maps to v8.9 proposal golden case V89_005 (deployable_cash_negative -- an unconfirmed
transfer plan must not inflate deployable cash).
"""
from __future__ import annotations

import importlib.util
from pathlib import Path

ROOT = Path(__file__).resolve().parents[3]
MODULE_PATH = ROOT / "tools" / "build_weekly_legacy_transfer_plan_v1.py"


def _load_module():
    spec = importlib.util.spec_from_file_location("build_weekly_legacy_transfer_plan_v1", MODULE_PATH)
    module = importlib.util.module_from_spec(spec)
    assert spec.loader is not None
    spec.loader.exec_module(module)
    return module


def test_v89_005_unconfirmed_plan_contributes_zero_to_deployable_cash() -> None:
    mod = _load_module()
    result = mod.evaluate_transfer_plan(4000000.0, False, None)
    assert result["deployable_cash_contribution_krw"] == 0.0
    assert result["plan_status"] == "PLANNED_NOT_DEPLOYABLE"


def test_confirmed_plan_uses_confirmed_amount_not_planned_amount() -> None:
    mod = _load_module()
    result = mod.evaluate_transfer_plan(4000000.0, True, 3800000.0)
    assert result["deployable_cash_contribution_krw"] == 3800000.0
    assert result["plan_status"] == "CONFIRMED_DEPLOYABLE"


def test_null_transfer_confirmed_treated_as_unconfirmed() -> None:
    mod = _load_module()
    result = mod.evaluate_transfer_plan(4000000.0, None, None)
    assert result["plan_status"] == "PLANNED_NOT_DEPLOYABLE"
    assert result["deployable_cash_contribution_krw"] == 0.0