Introduction Unit Testing Framework

System.out.println("Bug or But");

logger.info("Bug or But");

How to find the information in so many messages ?

Watch the var by debugger, but ...... manually

Can testing save your life ?

Automatic unit testing can save your life !

Automatic => uniform testing tool

Unit testing => divide and conquer

JUnit Testing `Framework'

Framework =>

almost completed except for

You must write Test Case

Eating Framework with CookCallback/Strategy

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In OO-System

What are Unit and Test Case ?

Unit => A class Or related Classes

Test Case => condition, state, behavior

DO TEST

Make a change

to a runtime object snapshot

Assert

Before => Condition, State, Behavior