The software you write in this test will be used for banks. Banks have accounts. Accounts hold money. Transfers can be made between accounts. Banks store the history of transfers.
There can be two types of transfers:
- Intra-bank transfers, between accounts of the same bank. They don't have commissions, they don't have limits and they always succeed.
- Inter-bank transfers, between accounts of different banks. They have 5€ commissions, they have a limit of 1000€ per transfer. And they have a 30% chance of failure.
Create the models and their relationships to accurately reflect banks, accounts and transfers. Make sure that new types of accounts and transfers can be added to the bank with minimal effort.
After modeling the domain(part 1), create a file called show_me_the_money.rb* in charge of reproducing the next situation:
Jim has an account on the bank A and Emma has an account on the bank B. Jim owes Emma 20000€. Emma is already a bit angry, because she did not get the money although Jim told her that he already sent it.
Help Jim send his money by developing a transfer agent. This agent assures that everybody gets their money. When the agent receives an order to transfer money from account A to account B, he issues transfers considering commissions, transfer limits and possibility of transfer failures.
The execution of the script will print the balance of every account before and after the transfers and the history of the transfer of every bank.
Before everything install dependencies using bundle install.
After installing dependencies, the application can be run with the following rake task:
rake run
And for tests with:
bundle exec rspec