def test_to_float() -> None:
## Vanilla:
with pytest.raises(TypeError):
Price.NA.as_float()
assert Price.of(usd, half, today).as_float() == 0.5
assert type(Price.of(usd, half, today).as_float()) == float
## With overload:
with pytest.raises(TypeError):
float(Price.NA)
assert float(Price.of(usd, half, today)) == 0.5
assert type(float(Price.of(usd, half, today))) == float
def test_to_integer() -> None:
## Vanilla:
with pytest.raises(TypeError):
int(Price.NA)
assert int(Price.of(usd, half, today)) == 0
assert type(int(Price.of(usd, half, today))) == int
## With overload:
with pytest.raises(TypeError):
Price.NA.as_integer()
assert Price.of(usd, half, today).as_integer() == 0
assert type(Price.of(usd, half, today).as_integer()) == int
def test_implementation() -> None:
## Define instances:
_price = Price() # type: ignore
sprice = SomePrice(usd, one, today)
nprice = NonePrice()
## Check structure:
assert _price.__slots__ == ()
assert sprice.__slots__ == ()
assert nprice.__slots__ == ()
assert not hasattr(_price, "__dict__")
assert not hasattr(sprice, "__dict__")
assert not hasattr(nprice, "__dict__")
## Check types
assert isinstance(Price.NA, Price)
assert isinstance(Price.NA, NonePrice)
assert not isinstance(Price.NA, SomePrice)
assert not isinstance(Price.NA, Money)
assert isinstance(_price, Price)
assert not isinstance(_price, SomePrice)
assert not isinstance(_price, NonePrice)
assert isinstance(sprice, Price)
assert isinstance(sprice, SomePrice)
assert not isinstance(sprice, NonePrice)
assert isinstance(nprice, Price)
assert not isinstance(nprice, SomePrice)
assert isinstance(nprice, NonePrice)
def test_scalar_addition() -> None:
## First use `Price.NA`s:
assert Price.NA.scalar_add(1) == Price.NA
## Vanilla addition:
assert Price.of(usd, zero,
today).scalar_add(1) == Price.of(usd, one, today)
assert Price.of(usd, zero,
today).scalar_add(1.0) == Price.of(usd, one, today)
assert Price.of(usd, zero,
today).scalar_add(one) == Price.of(usd, one, today)
assert Price.of(usd, zero,
today).scalar_add(-1) == Price.of(usd, -one, today)
def test_monetary_multiplication() -> None:
## First use `Price.NA`s:
assert Price.NA.times(1) == Money.NA
## Vanilla multiplication:
assert Price.of(usd, one, today).times(1) == Money.of(usd, one, today)
assert Price.of(usd, one, today).times(2) == Money.of(usd, two, today)
assert Price.of(usd, -one, today).times(1) == Money.of(usd, -one, today)
assert Price.of(usd, -one, today).times(2) == Money.of(usd, -two, today)
## Other types:
assert Price.of(usd, one, today).times(1) == Money.of(usd, one, today)
assert Price.of(usd, one, today).times(1.0) == Money.of(usd, one, today)
assert Price.of(usd, one, today).times(one) == Money.of(usd, one, today)
def test_to_boolean() -> None:
## Vanilla:
assert not Price.NA.as_boolean()
assert not Price.of(usd, zero, today).as_boolean()
assert Price.of(usd, half, today).as_boolean()
assert Price.of(usd, -half, today).as_boolean()
## With semantic overload
assert not bool(Price.NA)
assert not Price.of(usd, zero, today)
assert Price.of(usd, half, today)
assert Price.of(usd, -half, today)
def test_with() -> None:
## First use `Price.NA`s:
assert Price.NA.with_ccy(usd) == Price.NA
assert Price.NA.with_qty(one) == Price.NA
assert Price.NA.with_dov(today) == Price.NA
## Now with some:
assert Price.of(usd, zero,
today).with_ccy(eur) == Price.of(eur, zero, today)
assert Price.of(usd, zero,
today).with_qty(one) == Price.of(usd, one, today)
assert Price.of(usd, zero, today).with_dov(yesterday) == Price.of(
usd, zero, yesterday)
def test_scalar_multiplication() -> None:
## First use `Price.NA`s:
assert Price.NA.multiply(1) == Price.NA
## Vanilla subtraction:
assert Price.of(usd, one, today).multiply(1) == Price.of(usd, one, today)
assert Price.of(usd, one, today).multiply(2) == Price.of(usd, two, today)
assert Price.of(usd, -one, today).multiply(1) == Price.of(usd, -one, today)
assert Price.of(usd, -one, today).multiply(2) == Price.of(usd, -two, today)
## Other types:
assert Price.of(usd, one, today).multiply(1) == Price.of(usd, one, today)
assert Price.of(usd, one, today).multiply(1.0) == Price.of(usd, one, today)
assert Price.of(usd, one, today).multiply(one) == Price.of(usd, one, today)
## Operator overload:
assert Price.NA * 1 == Price.NA
assert Price.of(usd, one, today) * 1 == Price.of(usd, one, today)
assert Price.of(usd, one, today) * 2 == Price.of(usd, two, today)
assert Price.of(usd, -one, today) * 1 == Price.of(usd, -one, today)
assert Price.of(usd, -one, today) * 2 == Price.of(usd, -two, today)
def test_is_equal() -> None:
## Vanilla:
assert Price.NA.is_equal(NoPrice)
assert Price.NA.is_equal(NonePrice())
assert not Price.NA.is_equal(Price.of(usd, zero, today))
assert Price.of(usd, zero, today).is_equal(Price.of(usd, zero, today))
assert Price.of(usd, half, today).is_equal(Price.of(usd, half, today))
assert not Price.of(usd, zero, today).is_equal(Price.of(eur, zero, today))
assert not Price.of(usd, zero, today).is_equal(Price.of(usd, half, today))
assert not Price.of(usd, zero, today).is_equal(
Price.of(usd, zero, yesterday))
## With operator overload:
assert Price.NA == NonePrice()
assert Price.NA != Price.of(usd, zero, today)
assert Price.of(usd, zero, today) == Price.of(usd, zero, today)
assert Price.of(usd, half, today) == Price.of(usd, half, today)
assert Price.of(usd, zero, today) != Price.of(eur, zero, today)
assert Price.of(usd, zero, today) != Price.of(usd, half, today)
assert Price.of(usd, zero, today) != Price.of(usd, zero, yesterday)
def test_of() -> None:
assert Price.of(usd, one, None) == Price.NA
assert Price.of(usd, None, today) == Price.NA
assert Price.of(usd, one, None) == Price.NA
assert Price.of(usd, one, today) == SomePrice(usd, one, today)
def test_comparisons() -> None:
## First use `Price.NA`s:
assert not (Price.NA < Price.NA)
assert Price.NA <= Price.NA
assert not (Price.NA > Price.NA)
assert Price.NA >= Price.NA
## Try mixed:
assert Price.NA < Price.of(usd, -one, today)
assert Price.NA <= Price.of(usd, -one, today)
assert not (Price.NA > Price.of(usd, -one, today))
assert not (Price.NA >= Price.of(usd, -one, today))
## ... and:
assert not (Price.of(usd, -one, today) < Price.NA)
assert not (Price.of(usd, -one, today) <= Price.NA)
assert Price.of(usd, -one, today) > Price.NA
assert Price.of(usd, -one, today) >= Price.NA
## With defined values:
assert not (Price.of(usd, zero, today) < Price.of(usd, zero, today))
assert Price.of(usd, zero, today) <= Price.of(usd, zero, today)
assert not (Price.of(usd, zero, today) > Price.of(usd, zero, today))
assert Price.of(usd, zero, today) >= Price.of(usd, zero, today)
## ... and:
assert Price.of(usd, zero, today) < Price.of(usd, one, today)
assert Price.of(usd, zero, today) <= Price.of(usd, one, today)
assert not (Price.of(usd, zero, today) > Price.of(usd, one, today))
assert not (Price.of(usd, zero, today) >= Price.of(usd, one, today))
## ... and:
assert not (Price.of(usd, one, today) < Price.of(usd, zero, today))
assert not (Price.of(usd, one, today) <= Price.of(usd, zero, today))
assert Price.of(usd, one, today) > Price.of(usd, zero, today)
assert Price.of(usd, one, today) >= Price.of(usd, zero, today)
def test_floor_division() -> None:
## First use `Price.NA`s:
assert Price.NA.floor_divide(1) == Price.NA
## Vanilla subtraction:
assert Price.of(usd, one,
today).floor_divide(1) == Price.of(usd, one, today)
assert Price.of(usd, one,
today).floor_divide(2) == Price.of(usd, zero, today)
assert Price.of(usd, -one,
today).floor_divide(1) == Price.of(usd, -one, today)
assert Price.of(usd, -one,
today).floor_divide(2) == Price.of(usd, zero, today)
## Various divisor types:
assert Price.of(usd, one,
today).floor_divide(2) == Price.of(usd, zero, today)
assert Price.of(usd, one,
today).floor_divide(2.0) == Price.of(usd, zero, today)
assert Price.of(usd, one,
today).floor_divide(two) == Price.of(usd, zero, today)
## Division by zero:
assert Price.of(usd, one, today).floor_divide(0) == Price.NA
assert Price.of(usd, one, today).floor_divide(zero) == Price.NA
assert Price.of(usd, one, today).floor_divide(0.0) == Price.NA
## Operator overload:
assert Price.NA / 1 == Price.NA
assert Price.of(usd, one, today) // 1 == Price.of(usd, one, today)
assert Price.of(usd, one, today) // 2 == Price.of(usd, zero, today)
assert Price.of(usd, -one, today) // 1 == Price.of(usd, -one, today)
assert Price.of(usd, -one, today) // 2 == Price.of(usd, zero, today)
assert Price.of(usd, -one, today) // 0 == Price.NA
def test_abs() -> None:
## Vanilla:
assert Price.NA.abs() == Price.NA
assert Price.of(usd, zero, today).abs() == Price.of(usd, zero, today)
assert Price.of(usd, -one, today).abs() == Price.of(usd, +one, today)
assert Price.of(usd, +one, today).abs() == Price.of(usd, +one, today)
## With overload:
assert abs(Price.NA) == Price.NA
assert abs(Price.of(usd, zero, today)) == Price.of(usd, zero, today)
assert abs(Price.of(usd, -one, today)) == Price.of(usd, +one, today)
assert abs(Price.of(usd, +one, today)) == Price.of(usd, +one, today)
def test_scalar_subtraction() -> None:
## First use `Price.NA`s:
assert Price.NA.scalar_subtract(1) == Price.NA
## Vanilla subtraction:
assert Price.of(usd, zero,
today).scalar_subtract(1) == Price.of(usd, -one, today)
assert Price.of(usd, zero,
today).scalar_subtract(1.0) == Price.of(usd, -one, today)
assert Price.of(usd, zero,
today).scalar_subtract(one) == Price.of(usd, -one, today)
assert Price.of(usd, zero,
today).scalar_subtract(-1) == Price.of(usd, one, today)
## Operator overload:
assert Price.of(usd, zero,
today).scalar_subtract(1) == Price.of(usd, -one, today)
assert Price.of(usd, zero,
today).scalar_subtract(-1) == Price.of(usd, one, today)
def test_subtraction() -> None:
## First use `Price.NA`s:
assert Price.NA.subtract(Price.NA) == Price.NA
assert Price.NA.subtract(Price.of(usd, zero,
today)) == Price.of(usd, zero, today)
assert Price.of(usd, zero,
today).subtract(Price.NA) == Price.of(usd, zero, today)
## Vanilla subtraction:
assert Price.of(usd, zero, today).subtract(Price.of(usd, zero,
today)) == Price.of(
usd, zero, today)
assert Price.of(usd, zero, today).subtract(Price.of(usd, one,
today)) == Price.of(
usd, -one, today)
assert Price.of(usd, one, today).subtract(Price.of(usd, one,
today)) == Price.of(
usd, zero, today)
assert Price.of(usd, one, today).subtract(Price.of(usd, -one,
today)) == Price.of(
usd, two, today)
## Carry dates forward:
assert Price.of(usd, zero,
today).subtract(Price.of(usd, one, yesterday)) == Price.of(
usd, -one, today)
assert Price.of(usd, zero,
yesterday).subtract(Price.of(usd, one, today)) == Price.of(
usd, -one, today)
## Incompatible currency errors:
with pytest.raises(IncompatibleCurrencyError):
Price.of(usd, zero, today).subtract(Price.of(eur, zero, today))
## Operator overload:
assert Price.of(usd, zero, today) - Price.of(usd, one, today) == Price.of(
usd, -one, today)
assert Price.NA - Price.NA == Price.NA
assert Price.NA - Price.of(usd, zero, today) == Price.of(usd, zero, today)
assert Price.of(usd, zero, today) - Price.NA == Price.of(usd, zero, today)
def test_round() -> None:
## Vanilla:
assert Price.NA.round(2) == Price.NA
assert Price.of(usd, zero, today).round(2) == Price.of(usd, zero, today)
assert Price.of(usd, -one, today).round(2) == Price.of(usd, -one, today)
assert Price.of(usd, +one, today).round(2) == Price.of(usd, +one, today)
## Quick tests:
assert Price.of(usd, Decimal("1.555"),
today).round(2) == Price.of(usd, Decimal("1.56"), today)
assert Price.of(usd, Decimal("1.545"),
today).round(2) == Price.of(usd, Decimal("1.54"), today)
## With overload:
assert round(Price.NA, 2) == Price.NA
assert round(Price.of(usd, zero, today), 2) == Price.of(usd, zero, today)
assert round(Price.of(usd, -one, today), 2) == Price.of(usd, -one, today)
assert round(Price.of(usd, +one, today), 2) == Price.of(usd, +one, today)
assert round(Price.of(usd, Decimal("1.555"), today),
2) == Price.of(usd, Decimal("1.56"), today)
assert round(Price.of(usd, Decimal("1.545"), today),
2) == Price.of(usd, Decimal("1.54"), today)
## TODO: Following two are not really what round function signature says. mypy can't detect it!
assert round(Price.of(usd, Decimal("1.4"),
today)) == Price.of(usd, Decimal("1"), today)
assert round(Price.of(usd, Decimal("1.5"),
today)) == Price.of(usd, Decimal("2"), today)
def test_positive() -> None:
## Vanilla:
assert Price.NA.positive() == Price.NA
assert Price.of(usd, zero, today).positive() == Price.of(usd, zero, today)
assert Price.of(usd, -one, today).positive() == Price.of(usd, -one, today)
assert Price.of(usd, +one, today).positive() == Price.of(usd, +one, today)
## With overload:
assert +Price.NA == Price.NA
assert +Price.of(usd, zero, today) == Price.of(usd, zero, today)
assert +Price.of(usd, -one, today) == Price.of(usd, -one, today)
assert +Price.of(usd, +one, today) == Price.of(usd, +one, today)