If I have a test suite with multiple tests, when I try to run a single unit test, either from the context menu of the code editor, or from the JUnit view, it seems to insist
In the package explorer unfold the class. It should show you all methods. Right click on the one method you want to run, then select Run As -> JUnit from the context menu (just tested with Eclipse 3.4.1). Also selecting "Run" on a single entry in the JUnit-results view to re-run a test works in the same way.