def validate_price_precision(value: Optional["Decimal"], currency: str):
"""Validate if price amount does not have too many decimal places.
Price amount can't have more decimal places than currency allow to.
Works only with decimal created from a string.
"""
# check no needed when there is no value
if not value:
return
currency_fraction = get_currency_fraction(currency)
value = value.normalize()
if value.as_tuple().exponent < -currency_fraction:
raise ValidationError(
f"Value cannot have more than {currency_fraction} decimal places.")
}
AUTH_USER_MODEL = "account.User"
LOGIN_URL = "/account/login/"
AUTH_PASSWORD_VALIDATORS = [{
"NAME": "django.contrib.auth.password_validation.MinimumLengthValidator",
"OPTIONS": {
"min_length": 8
},
}]
DEFAULT_COUNTRY = os.environ.get("DEFAULT_COUNTRY", "US")
DEFAULT_CURRENCY = os.environ.get("DEFAULT_CURRENCY", "USD")
DEFAULT_DECIMAL_PLACES = get_currency_fraction(DEFAULT_CURRENCY)
DEFAULT_MAX_DIGITS = 12
DEFAULT_CURRENCY_CODE_LENGTH = 3
# The default max length for the display name of the
# sender email address.
# Following the recommendation of https://tools.ietf.org/html/rfc5322#section-2.1.1
DEFAULT_MAX_EMAIL_DISPLAY_NAME_LENGTH = 78
# note: having multiple currencies is not supported yet
AVAILABLE_CURRENCIES = [DEFAULT_CURRENCY]
COUNTRIES_OVERRIDE = {
"EU":
pgettext_lazy(
"Name of political and economical union of european countries",
def test_get_currency_fraction_unknown_currency():
result = get_currency_fraction(("test"))
assert result == 2
def test_get_currency_fraction_USD():
result = get_currency_fraction("USD")
assert result == 2
