public void testSize2() throws Exception {
        File f = getWorkDir();
        
        while (f.getParentFile() != null) {
            FileObject foFromFBFS = toFileObjectFromFileBasedFileSystem(f);
            assertNotNull (foFromFBFS);
            int size1 = getSize(foFromFBFS);
            List list = new ArrayList ();
            for (int i = 0; i < 100; i++) {
                FileObject child = foFromFBFS.getParent().createData("child"+Integer.toString(i));
                assertNotNull(child);
                list.add(child);
            }
            
            int size101 = getSize(foFromFBFS);
            assertTrue (size1 == size101);
            
            f = f.getParentFile();            
            WeakReference wrFBFS = new WeakReference (foFromFBFS);
            WeakReference wrList = new WeakReference (list);
            foFromFBFS =  null;
            list =  null;
            
            assertGC("", wrFBFS);            
            assertGC("", wrList);            
        }        
    }