Book Image

Eclipse 4 Plug-in Development by Example : Beginner's Guide

By : Dr Alex Blewitt
Book Image

Eclipse 4 Plug-in Development by Example : Beginner's Guide

By: Dr Alex Blewitt

Overview of this book

<p>As a highly extensible platform, Eclipse is used by everyone from independent software developers to NASA. Key to this is Eclipse’s plug-in ecosystem, which allows applications to be developed in a modular architecture and extended through its use of plug-ins and features.<br /><br />"Eclipse 4 Plug-in Development by Example Beginner's Guide" takes the reader through the full journey of plug-in development, starting with an introduction to Eclipse plug-ins, continued through packaging and culminating in automated testing and deployment. The example code provides simple snippets which can be developed and extended to get you going quickly.</p> <p>This book covers basics of plug-in development, creating user interfaces with both SWT and JFace, and interacting with the user and execution of long-running tasks in the background.</p> <p>Example-based tasks such as creating and working with preferences and advanced tasks such as well as working with Eclipse’s files and resources. A specific chapter on the differences between Eclipse 3.x and Eclipse 4.x presents a detailed view of the changes needed by applications and plug-ins upgrading to the new model. Finally, the book concludes on how to package plug-ins into update sites, and build and test them automatically.</p>
Table of Contents (19 chapters)
Eclipse 4 Plug-in Development by Example Beginner's Guide
Credits
About the Author
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

Time for action – avoiding SWTBot runtime errors


As more test methods are added, the runtime may start throwing spurious errors. This is because the order of the tests may cause changes, and the ones that ran previously may modify the state of the workbench. This can be mitigated by moving the common setup and tear-down routines to a single place:

  1. Create a static method beforeClass().

  2. Add the annotation @BeforeClass from the org.junit package.

  3. Move references to create a SWTWorkbenchBot to the static method, and save the value in a static field.

  4. The code looks like this:

    private static SWTWorkbenchBot bot;
    @BeforeClass
    public static void beforeClass() {
      bot = new SWTWorkbenchBot();
      try {
        bot.viewByTitle("Welcome").close();
      } catch (WidgetNotFoundException e) {
        // ignore
      }
    }
  5. Run the tests and ensure that they pass appropriately.

What just happened?

The JUnit annotation @BeforeClass allows a single static method to be executed prior to any of the tests running in the class. This...