@Test
 public void isNotAggregator() throws RSSException {
   this.mockUserRoles("provider", "other");
   assertFalse(userManager.isAggregator());
 }
 @Test
 public void isAggregator() throws RSSException {
   this.mockUserRoles("aggregator", "other");
   assertTrue(userManager.isAggregator());
 }