Bank-Kata

A kata for training Outside In TDD.

Write a class named Account that implements the following public interface:

public interface AccountService
{
    void deposit(int amount); 
    void withdraw(int amount); 
    void printStatement();
}

You cannot change the public interface of this class. Here's the specification for an acceptance test that expresses the desired behavior.

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 they print their bank statement
Then they would see:

Date       || Amount || Balance
14/01/2012 || -500   || 2500
13/01/2012 || 2000   || 3000
10/01/2012 || 1000   || 1000

We're using ints for the money amounts to keep the auxiliaries as simple as possible.
Don't worry about spacing and indentation in the statement output.
Use the acceptance test to guide your progress towards the solution.
When in doubt, go for the simplest solution!

This kata is taken from Katalist

CorradoTorino/Bank-Kata

Bank-Kata