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

Extracting JSON data into Java objects


Now that the basic syntax has been covered, we will start building the JSON DataProvider method. First, we need a file I/O method to read the JSON data from a file. The parameter to the method will be the filename, including the path and string type. The method will be static and return JSONObject. Here is the code sample:

/**
 * extractData_JSON - method to extract JSON data from a file
 * 
 * @param file (including path)
 * @return JSONObject
 * @throws Exception
 */
public static JSONObject extractData_JSON(String file) throws Exception {
    FileReader reader = new FileReader(file);
    JSONParser jsonParser = new JSONParser();

    return (JSONObject) jsonParser.parse(reader);
}

In cases where users might want to extract only specific sets of JSON data, as when filtering for specific test cases, they could create a wrapper method around the extractData_JSON method that would allow a parameter to be used as a filter. This method would also be static...