PayrollManagementSystem/backend/tests/unit/test_product_schema.py

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"""产品 schema 的金额口径单测(秒级,无外部依赖)。
守:产品 sale_price/stock_quantity 若私写校验不查小数位与容量,5 位小数
会被 Numeric 列静默截断(舍入即算错钱)、超容量会以 500 暴露 —— 校验
口径必须与 schemas/business._check_amount 一致(shipment/receipt 同源)。
"""
import pytest
from pydantic import ValidationError
from app.schemas.product import ProductCreateIn
class TestSalePrice:
"""单价校验:scale=4 对齐 Numeric(14,4) 列。"""
def test_四位小数通过_回显原样提交(self) -> None:
"""带精度的历史单价必须能原样提交(fba8cfc 教训:编辑被永远拒收)。"""
body = ProductCreateIn(
product_name="t_产品",
product_category="municipal_water",
sale_price="5000.1234",
)
assert body.sale_price == "5000.1234"
def test_五位小数拒绝而非静默截断(self) -> None:
with pytest.raises(ValidationError) as exc:
ProductCreateIn(
product_name="t_产品",
product_category="municipal_water",
sale_price="1.23456",
)
assert "最多四位小数" in str(exc.value)
def test_超容量拒绝(self) -> None:
"""DECIMAL(14,4) 整数部分 10 位:超出即拒绝而非溢出 500。"""
with pytest.raises(ValidationError):
ProductCreateIn(
product_name="t_产品",
product_category="municipal_water",
sale_price="99999999999.0000",
)
def test_空串归一None_负数拒绝(self) -> None:
empty = ProductCreateIn(
product_name="t_产品", product_category="municipal_water", sale_price=""
)
assert empty.sale_price is None
with pytest.raises(ValidationError):
ProductCreateIn(
product_name="t_产品", product_category="municipal_water", sale_price="-1"
)
class TestStockQuantity:
"""数量校验:默认 scale=2 对齐 Numeric(14,2) 列。"""
def test_三位小数拒绝(self) -> None:
with pytest.raises(ValidationError):
ProductCreateIn(
product_name="t_产品",
product_category="municipal_water",
stock_quantity="1.001",
)
def test_两位小数通过(self) -> None:
body = ProductCreateIn(
product_name="t_产品",
product_category="municipal_water",
stock_quantity="1.55",
)
assert body.stock_quantity == "1.55"