Spring 3.0 with JUnit Test 4

Reference URLs:

1. https://yuangaopeng.com/2018/12/05/Spring%20Testing%20classpath/
2. https://docs.spring.io/spring/docs/3.0.x/spring-framework-reference/htmlsingle/spring-framework-reference.html#integration-testing-annotations
3. 
   

For JUnit test with spring, either you load context configuration:

1. manual parse xml [ApplicationContext _ctx = ClassPathXmlApplicationContext( "abc/xyz/spring-context-all.xml" ) ], access beans via _ctx.getBean()
2. or annotation to let spring auto wired all your attributes of test cases.

And using annotation of @ContextConfiguration, I've preference to use classpath for reasons below:

1. Spring JUnit test cases able to share xml info.
2. multi developer environment competible.