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Versions: 18
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Contents
# == CreditCardValidations Factory
# Generates card number that passes validation
#
# #random
# CreditCardValidations::Factory.random
# #or particular brand
# CreditCardValidations::Factory.random(:maestro) # "6010430241237266856"
#
#
#
module CreditCardValidations
class Factory
class << self
def random(brand = nil)
brand = Detector.brands.keys.sample if brand.nil?
if Detector.brands[brand].nil?
raise Error.new('Unsupported brand')
end
generate(Detector.brands[brand][:rules].sample)
end
def generate(rule)
number(rule[:prefixes].sample, rule[:length].sample, rule.fetch(:options, {})[:skip_luhn])
end
def number(prefix, length, skip_luhn = false)
number = prefix.dup
1.upto(length - (prefix.length + 1)) do
number << "#{rand(9)}"
end
#if skip luhn
if skip_luhn
number += "#{rand(9)}"
else
number += last_digit(number).to_s
end
number
end
#extracted from darkcoding-credit-card
def last_digit(number)
# Calculate sum
sum, pos = 0, 0
length = number.length + 1
reversed_number = number.reverse
while pos < length do
odd = reversed_number[pos].to_i * 2
odd -= 9 if odd > 9
sum += odd
sum += reversed_number[pos + 1].to_i if pos != (length - 2)
pos += 2
end
(((sum / 10).floor + 1) * 10 - sum) % 10
end
end
end
end
Version data entries
18 entries across 18 versions & 2 rubygems