@Before
  public void setup() {

    service1 = mock(IUserRoleListService.class);
    service2 = mock(IUserRoleListService.class);
    mockTenant = mock(ITenant.class);
    String joe = "joe";
    String ceo = "ceo";
    when(service1.getAllRoles()).thenReturn(Arrays.asList("ceo", "admin"));
    when(service1.getAllRoles(mockTenant)).thenReturn(Arrays.asList("ceo", "admin"));
    when(service1.getAllUsers()).thenReturn(Arrays.asList("joe", "suzy"));
    when(service1.getAllUsers(mockTenant)).thenReturn(Arrays.asList("joe", "suzy"));
    when(service1.getRolesForUser(mockTenant, joe)).thenReturn(Arrays.asList("admin"));
    when(service1.getSystemRoles()).thenReturn(Arrays.asList("authenticated", "anonymous"));
    when(service1.getUsersInRole(mockTenant, ceo)).thenReturn(Arrays.asList("suzy"));

    when(service2.getAllRoles()).thenReturn(Arrays.asList("extraRole1", "admin"));
    when(service2.getAllRoles(mockTenant)).thenReturn(Arrays.asList("extraRole1", "admin"));
    when(service2.getAllUsers()).thenReturn(Arrays.asList("user1", "suzy"));
    when(service2.getAllUsers(mockTenant)).thenReturn(Arrays.asList("user1", "suzy"));
    when(service2.getRolesForUser(mockTenant, joe)).thenReturn(Arrays.asList("admin", "rockstar"));
    when(service2.getSystemRoles()).thenReturn(Arrays.asList("serveradmin", "anonymous"));
    when(service2.getUsersInRole(mockTenant, ceo)).thenReturn(Arrays.asList("ted", "suzy"));

    compositeService = new CompositeUserRoleListService(Arrays.asList(service1, service2));
  }
  @Test
  public void testGetAllUsers() throws Exception {

    IUserRoleListService mockService = mock(IUserRoleListService.class);
    when(mockService.getAllUsers()).thenReturn(Arrays.asList("foo", "bar"));

    CachingUserRoleListServiceDecorator decorator =
        new CachingUserRoleListServiceDecorator(mockService);
    List<String> allRoles = decorator.getAllUsers();
    assertArrayEquals("does not match", new String[] {"foo", "bar"}, allRoles.toArray());

    // second call should be from cache
    allRoles = decorator.getAllUsers();
    assertArrayEquals("does not match", new String[] {"foo", "bar"}, allRoles.toArray());

    verify(mockService, times(1)).getAllUsers();
  }
 @Override
 public List<String> getAllUsers() {
   return userRoleListService.getAllUsers();
 }