Create a test project inside the project (which we want to test) in Eclipse android?

There are two ways to create a test project for the library project that you want to test the first method . Create a test project separately. I know this way. The second way . Create a test project inside the project itself. But I do not know how to create a test project inside the project (which we want to test). Can someone help and provide steps for creating a test project inside the project without creating a separate test project.

Thanks in advance