we define the stub list in JUnit's setUp(), a method that is invoked before each test method is called.






    每次调用testMethod 之前都会掉用setUp(),也就是说,如果你的TestCase里有两个testMethod,那么setUp()会被这样调用两次:
 --->setUp( )     --->testMethodA( )   
 --->setUp( )     --->testMethodB( )