Difference between `JUnit Plug-in Test` and `JUnit Test` in eclipse

Question

In the eclipse run command, there are two choices: JUnit Plug-in Test and JUnit Test.

Before, I tried to launch eclipse plugin test (org.eclipse.jdt.ui.tests.refactoring), and I had some issues ( Debugging eclipse unit test code "Test class should have exactly one" and "Workspace is closed" error ).

The issue was that when I tried to launch the debugger with JUnit Test, I got Workspace is closed error.

In eclipse configuration, they have the same workspace.

• What is the difference between the two? And especially, how does workspace work for them?
• Why I have Workspace is closed error with JUnit Test run? Is it possible to launch eclipse plugin test with JUnit Test?

Answer 1

JUnit Plug-in test is for testing Eclipse plug-ins. It runs a new instance of Eclipse. Then, it runs the tests.

JUnit test is for testing regular Java applications. It runs the tests without launching a new instance of Eclipse.