Book Image

Java EE 8 Development with Eclipse - Third Edition

By : Ram Kulkarni
Book Image

Java EE 8 Development with Eclipse - Third Edition

By: Ram Kulkarni

Overview of this book

Java EE is one of the most popular tools for enterprise application design and development. With recent changes to Java EE 8 specifications, Java EE application development has become a lot simpler with the new specifications, some of which compete with the existing specifications. This guide provides a complete overview of developing highly performant, robust and secure enterprise applications with Java EE with Eclipse. The book begins by exploring different Java EE technologies and how to use them (JSP, JSF, JPA, JDBC, EJB, and more), along with suitable technologies for different scenarios. You will learn how to set up the development environment for Java EE applications and understand Java EE specifications in detail, with an emphasis on examples. The book takes you through deployment of an application in Tomcat, GlassFish Servers, and also in the cloud. It goes beyond the basics and covers topics like debugging, testing, deployment, and securing your Java EE applications. You'll also get to know techniques to develop cloud-ready microservices in Java EE.
Table of Contents (20 chapters)
Title Page
Copyright and Credits
Dedication
Packt Upsell
Free Chapter
1
Introducing JEE and Eclipse
Index

Chapter 5. Unit Testing

In the last chapter, we learned how to create a web application that uses a database. In this chapter, we will learn how to write and execute unit tests in Eclipse for JEE applications. We will cover the following topics in this chapter:

  • Creating and executing unit tests using Eclipse JEE
  • Executing unit tests from Eclipse IDE
  • Mocking external dependencies for unit tests
  • Calculating unit test coverage

Testing the software that you develop is a very important part of the overall software development cycle. There are many types of testing; each one has a specific purpose, and each one varies in scope. Some examples of testing are functional testing, integration testing, scenario testing, and unit testing.

Of all these types, unit tests are the narrowest in scope and are typically coded and executed by developers. Each unit test is meant to test a specific and small piece of functionality (typically, a method in a class), and is expected to execute without any external dependencies...