about the authors rahul verma rahul is software tester by choicewith focus on technical aspects of the craft he has explored the areas of security testinglarge scale performance engineering and database migration projects he has expertise in design of test automation frameworks rahul has presented at several conferencesorganizations and academic institutions his articles have been published in various magazines and forums he runs the website testing perspective www testingperspective com which he has got the testing thought leadership award he is member of the istqb advanced level technical test analyst and foundation level certification working parties you can reach him at rahul_verma@testingperspective com chetan giridhar chetan giridhar has years experience of working in software services industryserviceproduct companies and research organization he runs the website technobeans technobeans wordpress com where he shares his knowledge day-to-day usage of programming for testers chetan has strong background in ++javaperl and python he has developed tools and libraries for users and community developers that could be easily downloaded from chetan sourceforge he has written on wide variety of subjects in the field of securitycode reviews and agile methodologies for testing magazines including testingexperience and agilerecord he has given lectures on python programming at indian institute of astrophysics you can reach him at cjgiridhar@gmail com www testingperspective com