Book Image

Selenium Framework Design in Data-Driven Testing

By : Carl Cocchiaro
Book Image

Selenium Framework Design in Data-Driven Testing

By: Carl Cocchiaro

Overview of this book

The Selenium WebDriver 3.x Technology is an open source API available to test both Browser and Mobile applications. It is completely platform independent in that tests built for one browser or mobile device, will also work on all other browsers and mobile devices. Selenium supports all major development languages which allow it to be tied directly into the technology used to develop the applications. This guide will provide a step-by-step approach to designing and building a data-driven test framework using Selenium WebDriver, Java, and TestNG. The book starts off by introducing users to the Selenium Page Object Design Patterns and D.R.Y Approaches to Software Development. In doing so, it covers designing and building a Selenium WebDriver framework that supports both Browser and Mobile Devices. It will lead the user through a journey of architecting their own framework with a scalable driver class, Java utility classes, JSON Data Provider, Data-Driven Test Classes, and support for third party tools and plugins. Users will learn how to design and build a Selenium Grid from scratch to allow the framework to scale and support different browsers, mobile devices, versions, and platforms, and how they can leverage third party grids in the Cloud like SauceLabs. Other topics covered include designing abstract base and sub-classes, inheritance, dual-driver support, parallel testing, testing multi-branded applications, best practices for using locators, and data encapsulation. Finally, you will be presented with a sample fully-functional framework to get them up and running with the Selenium WebDriver for browser testing. By the end of the book, you will be able to design your own automation testing framework and perform data-driven testing with Selenium WebDriver.
Table of Contents (15 chapters)
Title Page
Dedication
Packt Upsell
Contributors
Preface

Exception handling in test classes


Exception handling is extremely important in both page object class methods and test class methods. All test methods should include throws Exception in the signature or contain a try...catch block to handle the exceptions (checked exceptions), and the @BeforeMethod/@AfterMethod methods should query results and clean up if necessary. Let's look at a couple of scenarios that handle exceptions in test methods.

Note

Here is a link to the most common Selenium exceptions: https://seleniumhq.github.io/selenium/docs/api/py/common/selenium.common.exceptions.html.

Test methods

When we developed Java utility and page object classes, we added exception handling to the methods. In some cases, methods can include specific exception types or just throw general exception conditions. Users often use the try...catch...finally syntax to trap exceptions and handle them using a custom set of actions, but using this syntax should not be exclusive. We want exceptions to occur implicitly...