Intermediate Perl: 
Get a clear roadmap for improving your skills with Intermediate Perl, and gain working knowledge of Perl’s objects, references, and modules—ingredients that make the language so versatile and effective. Written by the authors of the bestselling Llama book, Learning Perl, and updated for Perl 5.14, this book offers a gentle but thorough introduction to intermediate programming in Perl.
- Chapters 14 and 20: testing
- Chapter 12: Creating Your Own Perl Distribution; has a section on “Plain Ol’ Documentation” (POD)
- Chapter 19: Moose
- Chapter 13 and 15: OO
- …