also ensure that update keeps the revision.

git-svn-id: https://hudson.dev.java.net/svn/hudson/trunk/hudson/main@14077 71c3de6d-444a-0410-be80-ed276b4c234a

test/src/test/java/hudson/scm/SubversionSCMTest.java

@@ -121,6 +121,10 @@ public class SubversionSCMTest extends HudsonTestCase {
         System.out.println(b.getLog());
         assertTrue(b.getLog().contains("At revision 13000"));
         assertBuildStatus(Result.SUCCESS,b);
-        assertTrue(p.getWorkspace().child("trivial-ant/build.xml").exists());
+
+        b = p.scheduleBuild2(0).get();
+        System.out.println(b.getLog());
+        assertTrue(b.getLog().contains("At revision 13000"));
+        assertBuildStatus(Result.SUCCESS,b);
     }
 }