Book Image

Mastering Selenium WebDriver 3.0 - Second Edition

Book Image

Mastering Selenium WebDriver 3.0 - Second Edition

Overview of this book

The second edition of Mastering Selenium 3.0 WebDriver starts by showing you how to build your own Selenium framework with Maven. You'll then look at how you can solve the difficult problems that you will undoubtedly come across as you start using Selenium in an enterprise environment and learn how to produce the right feedback when failing. Next, you’ll explore common exceptions that you will come across as you use Selenium, the root causes of these exceptions, and how to fix them. Along the way, you’ll use Advanced User Interactions APIs, running any JavaScript you need through Selenium; and learn how to quickly spin up a Selenium Grid using Docker containers. In the concluding chapters, you‘ll work through a series of scenarios that demonstrate how to extend Selenium to work with external libraries and applications so that you can be sure you are using the right tool for the job.
Table of Contents (15 chapters)

UnsupportedCommandException

This is one of those exceptions that you may never see or, depending upon the driver implementation you use, one you may see all the time. You will find UnsupportedCommandException getting thrown when the WebDriver implementation you are running does not support one of the core WebDriver API commands.

There are quite a few third-party WebDriver bindings, and these bindings are in various states of completeness. Not all third-party projects have managed to implement the entire WebDriver API yet. When a driver binding that you are using does not support a command that is part of the WebDriver API, it will throw UnsupportedCommandException.

If this happens to you, there is really not a lot you can do about it. Your choices are:

  • Code around the problem by using a different command
  • Switch to a different WebDriver binding
  • Write the code required to support...