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)

Using Docker compose

So far, we have looked at writing scripts and using Maven plugins, but we haven't looked at the option that Docker currently suggests you to follow, Docker compose.  Docker compose is a tool that lets you define a multiple container system using a YAML file. You can then use Docker compose to start and stop this system. Let's get this set up for our Selenium-Grid. First of all, we need to create a file called docker-compose.yml:

version: '2.2'
services:
selenium-hub:
image: selenium/hub:3.11.0
ports:
- 4444:4444

chrome:
image: selenium/node-chrome:3.11.0
links:
- selenium-hub:hub

firefox:
image: selenium/node-firefox:3.11.0
links:
- selenium-hub:hub

Here, you can see that we have defined the same system again, only this time it's in YAML format. We can now use Docker compose to start up our Selenium...