arc_patterns_python_ch01_valueObjects.py

from dataclasses import dataclass
from typing import NamedTuple
from collections import namedtuple


@dataclass(frozen=True)
class Name:
    first_name: str
    surname: str

class Money(NamedTuple):
    currency: str
    value: int

Line = namedtuple('Line', ['sku', 'qty'])


def test_equality():
    assert Money('gbp', 10) == Money('gbp', 10)
    assert Name('Harry', 'Percival') != Name('Bob', 'Gregory')
    assert Line('chair', 10) == Line('chair', 10)