[HUDSON-2721] Trying to help diagnose test hang.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@13538 71c3de6d-444a-0410-be80-ed276b4c234a

test/src/test/java/hudson/slaves/JNLPLauncherTest.java

@@ -26,8 +26,11 @@ public class JNLPLauncherTest extends HudsonTestCase {
      * Starts a JNLP slave agent and makes sure it successfully connects to Hudson. 
      */
     public void testLaunch() throws Exception {
-        if(Boolean.getBoolean("java.awt.headless"))
-            return;     // skip this test in the headless mode because we don't have GUI
+        if(Boolean.getBoolean("java.awt.headless")) {
+            System.err.println("Skipping JNLPLauncherTest.testLaunch because we are running headless");
+            return;
+        }
+        System.err.println("Not in headless mode, continuing with JNLPLauncherTest.testLaunch...");
         Computer c = addTestSlave();
         launchJnlpAndVerify(c, buildJnlpArgs(c));
     }