applied a patch from Aleksandar Kostandinov. See...

applied a patch from Aleksandar Kostandinov. See http://www.nabble.com/-PATCH--environment-expansion-in-job-configuration-td21872605.html

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@15082 71c3de6d-444a-0410-be80-ed276b4c234a

test/src/main/java/org/jvnet/hudson/test/HudsonTestCase.java

@@ -382,7 +382,7 @@ public abstract class HudsonTestCase extends TestCase {
      */
     public DumbSlave createSlave(Label l) throws Exception {
         CommandLauncher launcher = new CommandLauncher(
-                System.getProperty("java.home") + "/bin/java -jar " + hudson.getJnlpJars("slave.jar").getURL().getPath());
+                System.getProperty("java.home") + "/bin/java -jar " + new File(hudson.getJnlpJars("slave.jar").getURL().getPath()).getPath());
 
         // this synchronization block is so that we don't end up adding the same slave name more than once.
         synchronized (hudson) {