  @Test
  public void shouldFailIfTokenIsNotSet() throws ServletException, IOException {

    // given
    HttpServletRequest request =
        new MockHttpServletRequest("http://localhost:8080/sso/logout", null, 0, "POST", null);
    // when
    servlet.doPost(request, response);
    // when                                    ,
    verify(response).sendError(eq(HttpServletResponse.SC_BAD_REQUEST), eq("Token is not set"));
  }