kul1/paypal

Basic Credit Card Processing

by Prateep Kul

Overview of code design

• Follow instruction with open case for new assignment
  • For example:
    • Instead of check case 'Charge' || 'Credit' in one case to save coding, then still keep it as seperate case for future expansion
• Platform: ruby which can be config to have both call from
  • command line and
  • STDIO both Mac and Linux
• Use simple array functions that most languages provided for easy understand

Installation:

• This code develop in Mac using Ruby version 2.6, however any ruby in others platform should work.
• Using Gemfile with bundle for easy install required gems in this version and/or future development.

How to run this code

For example: input file name are input1.txt, input2.txt

• Run as normal ruby command

      ruby myprogram.rb input1.txt input2.txt

• Run via command arguments

      ./myprogram input1.txt input2.txt

• input read from STDIN, like:

      ./myprogram < input1.txt
      ./myprogram < input1.txt

How to test

Test logic to get result as expect from input file

• Input data use file input.txt
• Test with Rspec
• use guard while working (TDD)

To Test run

$ guard

or

$ rspec