JUnit Introduction

简单的JUnit介绍文档，很早以前写的，现在开放到google:

http://docs.google.com/View?docid=ajb63mf8qh8d_86gxbfgr

JUnit is a Unit Testing Framework for Java. The core features of JUnit are,

Write Unit Test Case Easily and Elegantly,

Do Regression Test Automatically,

Do Regression Test Repetitiously

很想请教一下上面的单词“Regression”是什么意思？
金山词霸上查是“衰退”，这里应该怎么理解呢？
可以理解为“简化”么

Regression Test -> "回归测试"