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Selenium Design Patterns and Best Practices

Selenium Design Patterns and Best Practices

By : Kovalenko
3.9 (11)
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Selenium Design Patterns and Best Practices

Selenium Design Patterns and Best Practices

3.9 (11)
By: Kovalenko

Overview of this book

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.
Table of Contents (11 chapters)
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Preface
Preface
What this book covers
What you need for this book
Who this book is for
Conventions
Reader feedback
Customer support
Free Chapter
1
1. Writing the First Test
1. Writing the First Test
Choosing Selenium over other tools
The Record and Playback pattern
Getting started with the Selenium IDE
Understanding Selenium commands
Comparing Ruby to Selenese
Comparing Selenium commands in multiple languages
Writing a Selenium test in Ruby
Summary
2
2. The Spaghetti Pattern
2. The Spaghetti Pattern
Introducing the Spaghetti pattern
Testing the product review functionality
Reasons for failures
The Chain Linked pattern
The Big Ball of Mud pattern
Summary
3
3. Refactoring Tests
3. Refactoring Tests
Refactoring tests
The DRY testing pattern
The Hermetic test pattern
Creating generic DRY methods
The random run order principle
Summary
4
4. Data-driven Testing
4. Data-driven Testing
Data relevance versus data accessibility
Hardcoding input data
Introducing test fixtures
Using an API as a source of fixture data
Using data stubs
The default values pattern
Summary
5
5. Stabilizing the Tests
5. Stabilizing the Tests
Engineering the culture of stability
Waiting for AJAX
Waiting for JavaScript animations
The Action Wrapper pattern
The Black Hole Proxy pattern
Test your tests!
Summary
6
6. Testing the Behavior
6. Testing the Behavior
Behavior-driven Development
Testing the shopping cart behavior
Introducing Cucumber
Running the Cucumber suite
The write once, test everywhere pattern
Testing a mobile site
Testing the purchase API
Summary
7
7. The Page Objects Pattern
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7. The Page Objects Pattern
Understanding objects
The Page Objects pattern
Creating a Page Objects framework
Running tests with the Page Objects framework
The test tool independence pattern
The right way to implement Page Objects
Summary
8
8. Growing the Test Suite
8. Growing the Test Suite
Strategies for writing test suites
Continuous Integration
Frequently Asked Questions
Summary
9
A. Getting Started with Selenium
A. Getting Started with Selenium
Setting up the computer
Understanding test class naming
Summary
10
Index
Index

The right way to implement Page Objects

I will not venture a claim that the implementation of the Page Objects in this chapter is the right and only way to do it. Just like there are many programming languages and different ways to write code, there are multiple ways to implement Page Objects. Choosing the right approach will be one of the first and most difficult tasks to figure out. I'd like to spend this section talking about different approaches we could have taken when writing our framework.

Making pages smarter than tests

In the framework we implemented, the @selenium instance is passed between different Page objects as the test progresses. For example, after we have created an instance of Firefox browser with WebDriver, we pass it into each class like this:

This approach is good because it is clear to see the order of progression from page to page. It's clear to see that @selenium moves first to the home page and hands off itself to the HomePage object. Then, the test adds a product...

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