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Selenium Design Patterns and Best Practices

By : Kovalenko

3.9 (11)

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.

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. 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. 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. 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. 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. 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. 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. The Page Objects Pattern

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. Growing the Test Suite

8. Growing the Test Suite

Strategies for writing test suites

Continuous Integration

Frequently Asked Questions

Summary

A. Getting Started with Selenium

A. Getting Started with Selenium

Setting up the computer

Understanding test class naming

Summary

Index

Index

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Chapter 1. Writing the First Test

	"Self-education is, I firmly believe, the only kind of education there is."
	--Isaac Asimov

In this book, we will simulate my personal experience of testing e-commerce systems. We will start by writing a very simple and crude test case, and we will refactor it and grow it into a stable and reliable test suite. A web store example might not apply to everyone's job, but the examples provided should be general enough to apply to any situation.

Today is our first day on the job; you and I are the sole members of the newly formed Quality Assurance team for the little start-up that sells Valentine's Day cards. It's a small company and the pay is not the greatest; however, just like any small start up, we get some company stock. This means that we can be very rich and famous if the website becomes popular. The website needs to stay operational and bug free, or our customers will never return and I will not be able to purchase that yacht I always wanted.

We know that we are short-staffed and need some automated tests to keep the quality high. However, first we need to convince the owner of the company that test automation is the right direction, instead of just testing everything by hand. We need to provide a cost-effective way to test the website and get quick results!

In this chapter, we will make an argument for using Selenium as our automation tool of choice and write a simple test to show how fast we can start building new tests. We will discuss the following topics along the way:

Why you should use Selenium over other tools
The Record and Playback pattern
The Selenium IDE
Recording a test with the Selenium IDE
Selenium WebDriver
Writing a test with Ruby
The Test::Unit testing framework
Interactive test debugging

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