You need to make sure you run the correct file...
E.g. if your main program is main.bb and it includes test.bb, you need to run main.bb or you'll get an error (since test.bb doesn't have a program body ... or shouldn't have).
E.g. if your main program is main.bb and it includes test.bb, you need to run main.bb or you'll get an error (since test.bb doesn't have a program body ... or shouldn't have).