"""月份校验单元测试。

守的口径：报表、月结、调整单入口都必须拦住 `2026-13`、`0000-01` 这类
非法月份。只校验长度会让 ValueError 一路传到 `calendar.monthrange`，
最终变成 500 而不是参数错误 400。
"""

import pytest
from pydantic import ValidationError

from app.core.month import parse_month, validate_month
from app.schemas.report import DepartmentSummaryQuery, PersonalDetailQuery
from app.schemas.settlement import AdjustmentCreateIn, SettlementGenerateIn


class Test月份校验:
    """合法月份通过，非法月份在入口即拒绝。"""

    @pytest.mark.parametrize("month", ["2026-01", "2026-12", "2000-06"])
    def test_合法月份_通过(self, month: str):
        assert validate_month(month) == month
        year, mon = parse_month(month)
        assert (year, mon) == (int(month[:4]), int(month[5:7]))

    @pytest.mark.parametrize(
        "month",
        ["2026-13", "2026-00", "2026-1", "2026-1a", "0000-01", "abc", "2026/10"],
    )
    def test_非法月份_抛ValueError(self, month: str):
        with pytest.raises(ValueError):
            validate_month(month)

    @pytest.mark.parametrize("month", ["2026-13", "2026-00", "0000-01"])
    def test_月结与调整单_schema拒绝非法月份(self, month: str):
        with pytest.raises(ValidationError):
            SettlementGenerateIn(month=month)
        with pytest.raises(ValidationError):
            AdjustmentCreateIn(
                settlement_month=month,
                personnel_id=1,
                direction=1,
                amount="100.00",
                reason="测试",
            )

    @pytest.mark.parametrize("month", ["2026-13", "2026-00", "0000-01"])
    def test_报表查询_schema拒绝非法月份(self, month: str):
        with pytest.raises(ValidationError):
            DepartmentSummaryQuery(settlement_month=month)
        with pytest.raises(ValidationError):
            PersonalDetailQuery(settlement_month=month)

    def test_报表可选月份_空串规范为None(self):
        """axios 未剔除空串时不能误报格式错误。"""
        assert PersonalDetailQuery(settlement_month="").settlement_month is None