TDD Training

Ex1 Stack Spécification : Implement a Stack class with the following public methods: - void push(Object object) - Object pop() Stack should throw an exception if popped when empty.

Objective:
Introduce a naming convention
Create the production code from the tests
Start with the assertion
Tip for getting started: the simplest case

Ex2 Roman numeral converter

Spécification :
	Implement a Roman numeral converter. 
	The code must be able to take decimals up to 3999.
	The code must convert those decimals
	to their roman equivalent.
	
Objective:
Build the algorithm little by little
Delay exception handling
Create duplication consciously
From simple to more complicated structures

Ex3 Leap Year

Spécification :
Year All the following rules must be satisfied:
Is leap year if divisible by 400
Is NOT leap year if divisible by 100 but not by 400
Is leap year if divisible by 4

Objective:
Express business rules clearly
It is allowed to write a green test if it expresses a business rule

Ex4 Payment Service

Problem description:  Payment service
Given a user wants to buy her selected items
When she submits her payment details
Then we should process her payment
Acceptance criteria:
If the user is not valid, an exception should be thrown.
Payment should be sent to the payment gateway.
Create a class with the following signature:

Objective:
Discover the TDD "outside in"
"Mock" objects
"Mock" the behavior of objects
Check that methods of mocked objects are called.