The JUnit recently released 4.5 is the state of the art in terms of unit testing, and provides significant new features to improve the development process of Java. JUnit in Action, Second Edition is an up-to-date guide to unit testing Java applications (including Java EE applications) using the JUnit framework and extensions. This book provides techniques to solve real-world problems such as testing AJAX applications, using ridicule to achieve isolation testing, in-container testing for Java EE and database applications, and test automation. Written to help readers exploit JUnit 4.5, the book covers the latest innovations such as new explanations that simplify writing tests, exception handling improved, and the new assertion methods. You also will find how to use JUnit extension for testing the new application styles and frameworks, including Ajax, OSGi, and HTML-based presentation layer. Using a sample-driven approach, various unit testing strategies are protected, such as how to unit test EJBs, database applications, and web applications.