29 lines
960 B
Python
29 lines
960 B
Python
|
"""核算落库辅助纯函数测试。
|
|||
|
|
|
|||
|
|
守的是：金额两位固化的舍入模式 —— quantize 缺省是上下文 ROUND_HALF_EVEN
|
|||
|
|
（银行家舍入），x.xx5 会舍成偶数尾数，与业务四舍五入口径差 1 分
|
|||
|
|
（docstring 声称 HALF_UP，必须用测试锁死实际行为）。
|
|||
|
|
"""
|
|||
|
|
|
|||
|
|
from decimal import Decimal
|
|||
|
|
|
|||
|
|
from app.services.calc_service import _q2
|
|||
|
|
|
|||
|
|
|
|||
|
|
class TestQ2:
|
|||
|
|
"""金额两位小数（HALF_UP）。"""
|
|||
|
|
|
|||
|
|
def test_半进位一律入(self) -> None:
|
|||
|
|
# 缺省 ROUND_HALF_EVEN 会舍成 2.34（4 是偶数）
|
|||
|
|
assert _q2(Decimal("2.345")) == Decimal("2.35")
|
|||
|
|
|
|||
|
|
def test_负数半进位远离零(self) -> None:
|
|||
|
|
assert _q2(Decimal("-2.345")) == Decimal("-2.35")
|
|||
|
|
|
|||
|
|
def test_普通进位不变(self) -> None:
|
|||
|
|
assert _q2(Decimal("39.111111")) == Decimal("39.11")
|
|||
|
|
assert _q2(Decimal("39.115000")) == Decimal("39.12")
|
|||
|
|
|
|||
|
|
def test_None直通(self) -> None:
|
|||
|
|
assert _q2(None) is None
|