补充知识点Junit4配置
安装JunitGenerator V2.0
点击file，点击settings
左侧选择Plugins,右侧界面选择MarketPlace，输入junit，回车搜索。
选择JUnitGenerator V2.0，点击install
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点击Accept
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点击Restart IDE
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5、点击 Restart，插件JUnitGenerator V2.0就安装好了
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二、修改JUnitGenerator V2.0的配置
1、点击file，点击settings
2、左侧选择JUnit Generator,右侧界面选择Properties。
（1）Output Path值修改为：SOURCEPATH/../../test/java/{SOURCEPATH}/../../test/java/SOURCEPATH/../../test/java/{PACKAGE}/${FILENAME}
（2）Default Template 选择 JUnit4
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3、选择JUnit 4 界面，去掉package行中的test. ，点击ok