Book Image

Learn Selenium

By : UNMESH GUNDECHA, Carl Cocchiaro
Book Image

Learn Selenium

By: UNMESH GUNDECHA, Carl Cocchiaro

Overview of this book

Selenium WebDriver 3.x is an open source API for testing both browser and mobile applications. With the help of this book, you can build a solid foundation and learn to easily perform end-to-end testing on web and mobile browsers. You'll begin by focusing on the Selenium Page Object Model for software development. You'll architect your own framework with a scalable driver class, Java utility classes, and support for third-party tools and plugins. Next, you'll design and build a Selenium Grid from scratch to enable the framework to scale and support different browsers, mobile devices, and platforms. You'll also strategize and handle a rich web UI using the advanced WebDriver API, and learn techniques to tackle real-time challenges in WebDriver. Later chapters will guide you through performing different types of testing, such as cross-browser testing, load testing, and mobile testing. Finally, you will be introduced to data-driven testing, using TestNG to create your own automation framework. By the end of this Learning Path, you'll be able to design your own automation testing framework and perform data-driven testing with Selenium WebDriver. This Learning Path includes content from the following Packt books: • Selenium WebDriver 3 Practical Guide - Second Edition by Unmesh Gundecha • Selenium Framework Design in Data-Driven Testing by Carl Cocchiaro
Table of Contents (25 chapters)
Title Page

Introducing Java 8 Stream API

The Stream API is a new addition to the Collections API in Java 8. The Stream API brings new ways to process collections of objects. A stream represents a sequence of elements and supports different kinds of operations (filter, sort, map, and collect) from a collection. We can chain these operations together to form a pipeline to query the data, as shown in this diagram:

We can obtain a Stream from a collection using the .stream() method. For example, we have a dropdown of languages supported by the sample web application displayed in the header section. Let's capture this in an Array list, as follows:

List<String> languages = new ArrayList<String>();
languages.add("English");
languages.add("German");
languages.add("French");

If we have to print the list members, we will use a for loop in the following...