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# frozen_string_literal: true
module Faker
class Finance < Base
CREDIT_CARD_TYPES = %i[visa mastercard discover american_express
diners_club jcb switch solo dankort
maestro forbrugsforeningen laser].freeze
class << self
def credit_card(*types)
types = CREDIT_CARD_TYPES if types.empty?
type = sample(types)
template = numerify(fetch("finance.credit_card.#{type}"))
# calculate the luhn checksum digit
multiplier = 1
luhn_sum = template.gsub(/[^0-9]/, '').split('').reverse.map(&:to_i).inject(0) do |sum, digit|
multiplier = (multiplier == 2 ? 1 : 2)
sum + (digit * multiplier).to_s.split('').map(&:to_i).inject(0) { |digit_sum, cur| digit_sum + cur }
end
# the sum plus whatever the last digit is must be a multiple of 10. So, the
# last digit must be 10 - the last digit of the sum.
luhn_digit = (10 - (luhn_sum % 10)) % 10
template.gsub('L', luhn_digit.to_s)
end
def vat_number(legacy_country = NOT_GIVEN, country: 'BR')
warn_for_deprecated_arguments do |keywords|
keywords << :country if legacy_country != NOT_GIVEN
end
numerify(fetch("finance.vat_number.#{country}"))
rescue I18n::MissingTranslationData
raise ArgumentError, "Could not find vat number for #{country}"
end
def vat_number_keys
translate('faker.finance.vat_number').keys
end
end
end
end
Version data entries
13 entries across 13 versions & 1 rubygems