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 – writing a simple JUnit test case


This section explains how to write and run a simple JUnit case in Eclipse.

  1. Create a new Java project called com.packtpub.e4.junit.example.

  2. Create a class called MathUtil in com.packtpub.e4.junit.example.

  3. Create a public static method called isOdd() that takes an int value, and returns a boolean value if it is an odd number (using value % 2 == 1).

  4. Create a new class called MathUtilTest in the package com.packtpub.e4.junit.example.

  5. Create a method called testOdd() with an annotation @Test, which is how JUnit 4 signifies that this method is a test case.

  6. Click on the quick-fix saying Add JUnit 4 library to the build path, or edit the build path manually to point to Eclipse's plugins/org.junit_4.*.jar file.

  7. Implement the testOdd() method as follows:

    assertTrue(MathUtil.isOdd(3));
    assertFalse(MathUtil.isOdd(4));
  8. Add a static import to org.junit.Assert.* to fix the compile-time errors.

  9. Right-click on the project and go to Run As | JUnit Test, and the JUnit...