ruby The Appium Bootcamp is a series of posts by noted Selenium expert Dave Haeffner that cover the basics of mobile test automation with Appium. The fifth post in the series covers writing and refactoring tests for iOS and Android apps. It starts with setting up the necessary gems, including Bundler, RSpec, and Appium Lib, and then moves on to creating a test file using page objects to simplify the code and make it more reusable. The post also discusses how to use a central configuration file to set up the test environment for both iOS and Android devices. Finally, it covers how to run tests in the cloud and provides additional resources.