What is Screenplay pattern in Serenity?

The Screenplay pattern lets you write high-quality automated acceptance tests. With this, you can create good testing habits, test suites that are easy to read, maintain & extend. It also enables you to write more reliable and robust automates tests. The serenity screenplay pattern integrates with both the JUnit and Cucumber. The Screenplay pattern is based on food software engineering principles such as layers of abstraction, the single responsibility principle, and the open-closed principle.