Book Image

Voice User Interface Projects

By : Henry Lee
Book Image

Voice User Interface Projects

By: Henry Lee

Overview of this book

From touchscreen and mouse-click, we are moving to voice- and conversation-based user interfaces. By adopting Voice User Interfaces (VUIs), you can create a more compelling and engaging experience for your users. Voice User Interface Projects teaches you how to develop voice-enabled applications for desktop, mobile, and Internet of Things (IoT) devices. This book explains in detail VUI and its importance, basic design principles of VUI, fundamentals of conversation, and the different voice-enabled applications available in the market. You will learn how to build your first voice-enabled application by utilizing DialogFlow and Alexa’s natural language processing (NLP) platform. Once you are comfortable with building voice-enabled applications, you will understand how to dynamically process and respond to the questions by using NodeJS server deployed to the cloud. You will then move on to securing NodeJS RESTful API for DialogFlow and Alexa webhooks, creating unit tests and building voice-enabled podcasts for cars. Last but not the least you will discover advanced topics such as handling sessions, creating custom intents, and extending built-in intents in order to build conversational VUIs that will help engage the users. By the end of the book, you will have grasped a thorough knowledge of how to design and develop interactive VUIs.
Table of Contents (12 chapters)

Creating end-to-end tests using the Dialogflow client SDK

In this section, you will learn how to use the Dialogflow client SDK ( to test the Fortune Cookie intents. Previously, you used two techniques to test your Dialogflow intents. First, you used the action simulator provided by Dialogflow. Then, you used Google Assistant from your phone. Writing Node.js code to create end-to-end tests using the Dialogflow client SDK is very useful for the following reasons:

  • Programmatically written tests can be repeated and automated.
  • It is faster to execute test code than manually performing mundane actions on a phone or the simulator.
  • You can test as you create your Dialogflow intents, which will help you detect errors in the early stages of your development.
  • If you make big changes to Dialogflow intents, your test will fail and will help you troubleshoot...