code: @Test public void testLookupEmptyName() throws Exception {
    Object result=namingContext.lookup(new CompositeName());
    assertTrue(result instanceof NamingContext);
    result=namingContext.lookup(new CompositeName(""));
    assertTrue(result instanceof NamingContext);
    result=testActionPermission(JndiPermission.ACTION_LOOKUP,namingContext,null);
    assertTrue(result instanceof NamingContext);
    result=testActionPermission(JndiPermission.ACTION_LOOKUP,namingContext,"");
    assertTrue(result instanceof NamingContext);
  }
  