from decimal import Decimal

from domain.marketplace.money import Money


def test_money_creation():
    money = Money(amount=Decimal("99.99"))
    assert money.amount == Decimal("99.99")


def test_money_is_immutable():
    money = Money(amount=Decimal("10.00"))

    try:
        money.amount = Decimal("20.00")  # type: ignore
        assert False, "Should have raised FrozenInstanceError"
    except AttributeError:
        pass


def test_money_equality():
    money1 = Money(amount=Decimal("50.00"))
    money2 = Money(amount=Decimal("50.00"))
    assert money1 == money2


def test_money_add():
    money1 = Money(amount=Decimal("2.00"))
    money2 = Money(amount=Decimal("3.00"))

    assert (money1 + money2) == Money(amount=Decimal("5.00"))
    assert money1 == Money(amount=Decimal("2.00"))
    assert money2 == Money(amount=Decimal("3.00"))


def test_money_substract():
    money1 = Money(amount=Decimal("5.00"))
    money2 = Money(amount=Decimal("3.00"))
    assert (money1 - money2) == Money(amount=Decimal("2.00"))


def test_money_can_not_have_more_than_two_decimals():
    try:
        Money(amount=Decimal("1.234"))
        assert False, "Should have raised ValueError"
    except ValueError:
        pass


def test_money_allows_two_decimals():
    money = Money(amount=Decimal("1.23"))
    assert money.amount == Decimal("1.23")


def test_money_allows_one_decimal():
    money = Money(amount=Decimal("1.2"))
    assert money.amount == Decimal("1.2")


def test_money_allows_no_decimals():
    money = Money(amount=Decimal(1))
    assert money.amount == Decimal(1)