@Test(expected = SentryNoSuchObjectException.class)
public void testAddDeleteGroupsNonExistantRole()
    throws Exception {

  String roleName = "non-existant-role";
  String grantor = "g1";
  Set<TSentryGroup> groups = Sets.newHashSet();
  sentryStore.alterSentryRoleAddGroups(grantor, roleName, groups);
}