Think of your personal bank account experience. When in doubt, go for the simplest solution. Try outside in test driven development.
Create a simple banking application with the following features:
- Deposit into an Account
- Withdraw from an Account
- Print a bank statement to the console
Acceptance criteria: Statement should have transactions in the following format:
| DATE | AMOUNT | BALANCE |
|---|---|---|
| 10/11/2015 | 500.00 | 1400.00 |
| 02/11/2015 | -100.00 | 900.00 |
| 01/11/2015 | 1000.00 | 1000.00 |
Print Statement Acceprace Test
Start with a class like this:
public class Account {
public void Deposit(int amount);
public void Withdraw(int amount);
public void PrintStatement();
}- You can not add other public methods
- For simplicity, use strings and integers for dates and amounts
- Spaces in formatting can also be ignored
This follows a tutorial from @sandromancuso, see their for other design/implementation constrasins.
- Object Calisthenics pdf
- Object Calisthenics (full book), Jeff Bay in: The ThoughtWorks Anthology. Pragmatic Bookshelf 2008
- Original idea for the kata: How Object-Oriented Are You Feeling Today? - Krzysztof Jelski (Session on the Software Craftsmanship UK 2011 conference)
- Sandro's Kata repository
- A Java verion