Specification / Requirements
You should be able to interact with your code via a REPL like IRB or the JavaScript console. (You don't need to implement a command line interface that takes input from STDIN.)
Deposits, withdrawal.
Account statement (date, amount, balance) printing.
Data can be kept in memory (it doesn't need to be stored to a database or anything).
Acceptance criteria
Given a client makes a deposit of 1000 on 10-01-2012
And a deposit of 2000 on 13-01-2012
And a withdrawal of 500 on 14-01-2012
When she prints her bank statement
Then she would see
date || credit || debit || balance
14/01/2012 || || 500.00 || 2500.00
13/01/2012 || 2000.00 || || 3000.00
10/01/2012 || 1000.00 || || 1000.00
As a user,
so that I can transfer money,
I want to be able to add money to my bank account.
As a user,
so that I can withdraw money,
I want to be able to remove money from my bank account.
As a user,
so that I can keep track of my transactions,
I want to see a statement of my bank account.