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Selenium Design Patterns and Best Practices, by Dima Kovalenko
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Build a powerful, stable, and automated test suite using Selenium WebDriverAbout This Book
- Keep up with the changing pace of your web application by creating an agile test suite
- Save time and money by making your Selenium tests 99% reliable
- Improve the stability of your test suite and your programing skills by following a step-by-step continuous improvement tutorial
Whether you are an experienced WebDriver developer or someone who was newly assigned a task to create automated tests, this book is for you. Since the ideas and concepts are described in simple terms, no previous experience in computer coding or programming is required.
What You Will Learn- Control Selenium WebDriver within any major programing language such as Java, Ruby, Python, and .NET
- Learn how to implement a simple test script or a complex Page Objects framework
- Set up each test to automatically deal with AJAX and jQuery
- Remove test instabilities by blocking third-party services
- Deal with data uncertainties by using fixtures, JSON APIs, and API stubbing
- Improve your test suite continuously by refactoring code and using the DRY principle
- Stabilize your tests by using patterns such as the Action Wrapper and Black Hole Proxy patterns
Selenium WebDriver is a global leader in automated web testing. It empowers users to perform complex testing scenarios with its simple and powerful interface.
This guide will provide you with all the skills you need to successfully create a functional Selenium test suite. Starting from the very beginning of the Selenium IDE, this book will show you how to transition into a real programing language such as Ruby or Java. You will quickly learn how to improve your code quality with refactoring and the skills needed to plan for the future development of your website to future-proof your test suite. With ample test examples running against a life-like e-commerce store and detailed step-by-step code review and explanations, you will be ready to test any challenge web developers might throw your way.
This book is intended for anyone who wants to create a test suite that is easy to maintain by expanding your knowledge until you feel truly confident and comfortable with Selenium.
- Sales Rank: #1234682 in Books
- Published on: 2014-09-23
- Released on: 2014-09-23
- Original language: English
- Number of items: 1
- Dimensions: 9.25" h x .61" w x 7.50" l, 1.03 pounds
- Binding: Paperback
- 225 pages
About the Author
Dima Kovalenko
Dima Kovalenko started his career in 2003 as a quality assurance intern during his summer internship at Rosetta Stone. Since then, he has spent many years testing software in both a manual and automated fashion in companies such as ThoughtWorks, Groupon, and many others. He has participated in many different types of projects, including language-learning software, web e-commerce stores, and legacy maintenance for telecommunication and airline companies. His experience includes support to Ruby, Java, iOS, Android, and PHP projects as an automated tester and software developer. His first real experience with computers was at the age of 14, shortly after moving to the United States of America from Russia; this encounter has sparked a lifelong passion for technology.
Most helpful customer reviews
1 of 4 people found the following review helpful.
Two Stars
By Adiamond8
Ruby centric and not much help for C#
2 of 2 people found the following review helpful.
A book for those starting to think about design in test code
By Shawn Knight
Like most Selenium/Webdriver books, the first chapter introduces the Selenium IDE and Selenese which seems inappropriate base on the book's title, having the expectation that design patterns and the latest best practices would be first and foremost. Further, leaving the impression the book is another, "how to" and "some good concepts" when working with Selenium.
The authors introduce a number of patterns and concepts, relating to the overall design of the test framework. Though, a number of "patterns" described by the authors are more of programming concepts, principles, or rules, such as "DRY".
The portion over page objects provides a great overall understanding of the pattern and why it is widely adopted by a large number of test developers. However, since the code examples are in Ruby, Page Factories (Java) is not mention. Again, the expectation, would take the page object pattern to the next level and introduce new levels of abstraction.
"Test your tests" section provides a couple of great concepts on stabilization.
Overall, minus the first chapter, the book starts the conversation of software patterns and principles, and that being the same as production application development. Though the book covers more "what not to do" then provide real solutions using proper design and coding. In addition, the book lacks a couple concepts, that "tests should be easy to read", the framework code should provide the intent and is self documenting, by using good naming conventions.
Nevertheless, the book would help those less experienced in development to start looking for better designs within his/her code and thinking about long term and downstream aspects.
1 of 1 people found the following review helpful.
It could be better...
By PHILLIP B.COULSON
I too started to read the book as others state, but quickly realized it was not for me. Let me clarify: if I was starting out with Selenium (in some form) I would smartly elect to move directly into the form currently supported AND for test code development: Selenium WebDriver. Selenium IDE has its own script language that is not the same as Selenium WebDriver. And Selenium Remote Control (RC) has been deprecated for quite a while. Selenium IDE produces 'brittle' output that makes it fairly disposable. So to talk about other forms of Selenium than WebDriver was not all what I was looking for.
My thoughts about the first 1/3 of the book are below:
- Talks about using irb (Interactive Ruby Shell) for debugging and lauds its utility. You'll need to take that with a grain of salt. Every IDE's debug mode has its strengths and weaknesses.
- I wish (in general) that authors would get straight to the point of suggesting a good/great pattern - and say why it is so good. This likely can be summed up succinctly instead of rambling through a handful that are bad patterns (with examples) chewing up the reader's time. Remember the phrase "Life is short"?
- There is a term for his verbose phrase of "no random order". Dependency.
- Usually test logs of test steps are generated to help track down issues. Additionally wrappers are often coded around object identifiers and associated methods to also help debugging issues. Screenshots anyone?
- The campy sample website: awful-valentine.com? puh-lease. Huge 'picture plate' objectives that could have been easily summarized in simple text one-liners.
- The author talks about the 'Big Ball of Mud' design pattern:
"Adoption of this pattern is usually unintentional and stems from being developed over long periods of time with different individuals working on different pieces without any overall architectural plan." p.62
Whereas the authors of the paper he refers to state:
"There are good reasons that good programmers build BIG BALLS OF MUD. It may well be that the economics of the software world are such that the market moves so fast that long term architectural ambitions are foolhardy, and that expedient, slash-and-burn, disposable programming is, in fact, a state-of-the-art strategy. The success of these approaches, in any case, is undeniable, and seals their pattern-hood.People build BIG BALLS OF MUD because they work. In many domains, they are the only things that have been shown to work. Indeed, they work where loftier approaches have yet to demonstrate that they can compete." from http://www.laputan.org/mud/mud.html#Conclusion
- The author quotes (w/o references):
"As Donald Knuth so eloquently stated, "Premature optimization is the root of all evil (or at least most of it) in programming."
Although one can argue that duplicate code, test goals, and such was what Knuth was speaking about, if one looks at his paper from where the quote comes, it is more in the context of performance algorithm-wise. The paper can be found here and the quote is found on p.268 :
http://web.archive.org/web/20130731202547/http://pplab.snu.ac.kr/courses/adv_pl05/papers/p261-knuth.pdf
Additionally:
http://joeduffyblog.com/2010/09/06/the-premature-optimization-is-evil-myth/
So, from this you can see I have issues regarding various 'detail's, the use of Ruby when Java has the market share, spending a large amount of the book's volume on stuff that does not get to the main point of the book supposedly (see book title). Much of the design practices he speaks can be used with any test tool - not just Selenium. Also, many test code developers like to take advantage of many good blogs, Youtube videos, and seminars - so maybe a book is not the best format for the book's topic in this day and age.
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