DJ's Credit Check and Tester

credit_check.rb

require 'pry'
class CreditCheck

attr_accessor :input
attr_accessor :numerizer
attr_accessor :multiplier
attr_accessor :sum
attr_accessor :reducables
attr_accessor :validater
attr_accessor :converter


def initialize
  @converter = []
  @multiplier = []
  @converter = []
  @sum = []
  @reducables = []
  @input = ""
end

  def input(pass_to_input)
    #puts "Please enter your credit card digits with only numericals (0-9)"
    # input = gets.chomp.reverse
    @input = pass_to_input.reverse
    #binding.pry

  end

  def numerize
    @numerizer = []
    #binding.pry
    @numerizer = @input.split('')
    #binding.pry
      # for later method? if input.include?('a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w''x')#,'y','z','!',"'",'@','#','$','%','&','*','(',')','_','[','{','}',']','|','\','?','/','>','.','<',',','`','~')
  end

  def int_convert
    @converter = []
    #binding.pry
    numerizer.each do |num|
      @converter << num.to_i
    end
    #binding.pry
  end
  # =>    Method I wish I had:
  # convert string to array of integers
  # if cant because not ints, puts statement rejecting, retake.get

  def multiply
    @multiplier = []
    count = 1
    @converter.each do |num|
      if count % 2 == 0
        @multiplier << num.to_i * 2
      else
        @multiplier << num.to_i
      end
      count = count + 1
    end
    #binding.pry
  end

  def reduction
    @reducables = []
    #binding.pry
    @multiplier.each do |num|
      if num > 9
        @reducables << num - 9
      else
        @reducables << num
      end
    end
    #binding.pry
  end

  def valid
    @sum = []
    #binding.pry
    @sum = @reducables.reduce(:+)
    #binding.pry
    if @sum.nil?
      valider = false
      puts "The number is invalid!!"
    elsif @sum % 10 == 0
      valider = true
      puts "The number is valid!"
    else
      valider = false
      puts "The number is invalid!"
    end
    # binding.pry
  end

  def validate(pass_to_input)
    input(pass_to_input)
    numerize
    int_convert
    multiply
    reduction
    valid
    # binding.pry
  end
end

creditee = CreditCheck.new
creditee.validate("")

credit_check_test.rb

require 'pry'
require_relative 'credit_check'
require 'minitest/autorun'
require 'minitest/pride'

class CreditCheckTest < MiniTest::Test

  def test_empty_string_is_invalid
    checker = CreditCheck.new
    result = checker.validate("")
    assert_equal "The number is invalid!!", result
  end

  def test_string_of_zero_is_valid
    checker = CreditCheck.new
    result = checker.validate("0")
    assert_equal true, result
    end

  def test_string_of_one_is_invalid
    checker = CreditCheck.new
    result = checker.validate("1")
    assert_equal false, result
  end

  def test_string_of_42_is_valid
    checker = CreditCheck.new
    result = checker.validate("42")
    binding.pry
    assert_equal true, result
  end

  def test_string_of_4242_is_valid
    checker = CreditCheck.new
    result = checker.validate("4242")
    assert_equal true, result
  end

  def test_string_credit_card_length_of_42s_is_valid
    checker = CreditCheck.new
    result = checker.validate("4242424242424242")
    assert_equal true, result
  end

  def test_string_of_59_is_valid
    checker = CreditCheck.new
    result = checker.validate("59")
    assert_equal true, result
  end

  def test_string_of_5959_is_valid
    checker = CreditCheck.new
    result = checker.validate("5959")
    assert_equal true, result
  end

  def test_string_of_58_is_invalid
    checker = CreditCheck.new
    result = checker.validate("58")
    assert_equal false, result
  end

  def test_actual_credit_card_number_is_valid
    checker = CreditCheck.new
    result = checker.validate("4095831209480129")
    assert_equal true, result
  end

end