"""纯函数单测：v1→v2 金额均分 / 退费判定（不连库）。"""
from decimal import Decimal
from types import SimpleNamespace

from scripts.migrate_protocol_payment_v1_to_v2 import (
    detail_has_refund,
    split_amount_across,
)


def test_split_amount_remainder_on_last():
    parts = split_amount_across(Decimal("100.00"), 3)
    assert parts == [Decimal("33.33"), Decimal("33.33"), Decimal("33.34")]
    assert sum(parts) == Decimal("100.00")


def test_split_amount_none():
    assert split_amount_across(None, 2) == [None, None]


def test_detail_has_refund_by_status():
    assert detail_has_refund(SimpleNamespace(
        pay_status="ytf",
        refund_amount=None,
        refund_attachments=None,
        refund_remark=None,
        refund_finance_confirm_attachments=None,
        refund_finance_remark=None,
    ))


def test_detail_has_refund_by_amount():
    assert detail_has_refund(SimpleNamespace(
        pay_status="yjf",
        refund_amount=Decimal("1.00"),
        refund_attachments=None,
        refund_remark=None,
        refund_finance_confirm_attachments=None,
        refund_finance_remark=None,
    ))


def test_detail_no_refund():
    assert not detail_has_refund(SimpleNamespace(
        pay_status="dfj",
        refund_amount=None,
        refund_attachments="",
        refund_remark="",
        refund_finance_confirm_attachments=None,
        refund_finance_remark=None,
    ))