title: JUnit test won't run when I Run-As from the test.java file
body: <p>I have a rather odd problem w/ JUnit4 and Eclipse.</p>
  
  <p>I have a Quaternion.java file, and an associated QuaternionTest.java.  In the package explorer, I can right click on the (C) icon under the QuaternionTest.java file and Run-As JUnit.  The test runs as expected.  When I right click on the QuaternionTest.java file and try to run the test, I get the following error:</p>
  
  <pre><code>An internal error occurred during: "Launching java".
  Path must include project and resource name: /QuaternionTest.java
  </code></pre>
  
  <p>I'm new to Eclipse and JUnit, so forgive me if this is supposed to be obvious.  I've tried looking at the properties and don't see anything.  Also, if I exclude QuaternionTest.java from my build path, everything runs fine (except, of course, the Quaternion tests)</p>
  
  <p>Any ideas would be most appreciated.</p>