如何使用鼠标单击在Eclipse中运行一组选定的单元测试？

I want to create a launcher/run configuration which runs only the JUnit tests in a selected set of test classes or selected set of packages. Now it looks like I'll have to create separate run configurations for each of my packages containing the tests I want to run. I also have a recollection of this working in older versions of Eclipse.I want to create a launcher/run configuration w