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Perl Testing: A Developer's Notebook (Paperback)

by Ian Langworth (Author), Shane Warden (Author)

4.0 out of 5 stars See all reviews (1 customer review)

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Product details

Paperback: 180 pages
Publisher: O'Reilly Media, Inc.; illustrated edition edition (14 Jul 2005)
Language English
ISBN-10: 0596100922
ISBN-13: 978-0596100926
Product Dimensions: 23.2 x 17.4 x 1.6 cm

Average Customer Review: 4.0 out of 5 stars See all reviews (1 customer review)

Amazon.co.uk Sales Rank: 192,583 in Books (See Bestsellers in Books)

Popular in these categories:

#9 in	Books > Computing & Internet > Computer Science > Artificial Intelligence > Natural Language
#26 in	Books > Computing & Internet > Programming > Languages > Perl
#48 in	Books > Computing & Internet > Web Development > Software Testing

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Product Description

Is there any sexier topic in software development than software testing? That is, besides game programming, 3D graphics, audio, high-performance clustering, cool websites, et cetera. Okay, so software testing is low on the list. And that's unfortunate, because good software testing can increase your productivity, improve your designs, raise your quality, ease your maintenance burdens, and help to satisfy your customers, coworkers, and managers. Perl has a strong history of automated tests. A very early release of Perl 1.0 included a comprehensive test suite, and it's only improved from there. Learning how Perl's test tools work and how to put them together to solve all sorts of previously intractable problems can make you a better programmer in general. Besides, it's easy to use the Perl tools described to handle all sorts of testing problems that you may encounter, even in other languages. Like all titles in O'Reilly's "Developer's Notebook" series, this "all lab, no lecture" book skips the boring prose and focuses instead on a series of exercises that speak to you instead of at you. "Perl Testing: A Developer's Notebook" will help you dive right in and: write basic Perl tests with ease and interpret the results; apply special techniques and modules to improve your tests; bundle test suites along with projects; test databases and their data; test websites and web projects; and use the "Test Anything Protocol" which tests projects written in languages other than Perl. With today's increased workloads and short development cycles, unit tests are more vital to building robust, high-quality software than ever before. Once mastered, these lessons will help you ensure low-level code correctness, reduce software development cycle time, and ease maintenance burdens. You don't have to be a die-hard free and open source software developer who lives, breathes, and dreams Perl to use this book. You just have to want to do your job a little bit better.

From the Publisher

Good software testing can increase your productivity, improve your designs, raise your quality, and make you more productive overall. With this series of hands-on labs, you'll learn how Perl's test tools work and how to use them to create basic and complex tests and interpret your results. Perl Testing: A Developer's Notebook is ideal if you want to reduce your software development cycle times.

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4.0 out of 5 stars A brisk canter around Perl testing modules, 23 Jul 2007

By	Thing with a hook - See all my reviews

This is a decent overview of Perl testing libraries, that goes further than the material in Intermediate Perl and the second edition of Advanced Perl Programming. It also moves pretty fast, as is the practical bent of the Developer's Notebook series. This will be welcome for any programmer familiar with testing tools in other languages, although testing newbies should be able to understand the mechanics without trouble.

Apart from the unit testing basics, it also goes over mocks, coverage, databases, webpages, testing documentation and module layout, and (most importantly for Perl) testing scripts. The Test::Class module, a xUnit-style module is also covered, although the more procedural Test::More seems to be the standard tool in Perl and is given the most attention. Code for a simple continuous integration tool is presented, which is pretty neat, given how short it is.

The emphasis in this book is very much on the how, rather than the why. Unlike many other books, you are given complete code along with how to execute the scripts and the expected output, which is very helpful. What isn't covered is any of the development methodologies that have driven the interest in testing methods. There's no discussion of Test Driven Development here, or how developer-driven unit testing meshes with the software building process, and there's only cursory or no discussion of what to test, where to start, test organisation (which IMO quickly becomes the limiting step in going test-infected), dealing with legacy code, dummies vs stubs vs mocks, white box vs black box testing etc. For the latter, you will have to consult the likes of xUnit Test Patterns, Unit Testing in Java and Test Driven Development: A Practical Guide. None of these books contain Perl code, however.

This is not a very long book, and there's not always the detail you might want for the more advanced topics. The emphasis on applications rather than principles also means that the book is a little vulnerable to API changes and newer CPAN modules. That said, part of the deal with the Developer's Notebook series is the lack of ceremony, so as long as you know what you're getting it's hard to complain, particularly as it's possible to pick up a copy at a reasonable price. Also, the writing itself is clear, direct and no-nonsense. It's a useful resource, and certainly in a more convenient format than scrolling through countless perldoc pages.

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