@Test
public void test_renewUserToken_failed() throws Exception {

    String token = "4EpPYDSfgN2D4Gf7UmNO3nuL";
    String responseJson = "{\"client_token\": \"18oVRlB3ft88S6U9raoEDnKn\",\"policies\": [\"safeadmin\"]," +
            "\"lease_duration\": 1800000}";
    Response response = getMockResponse(HttpStatus.INTERNAL_SERVER_ERROR, true, responseJson);
    when(reqProcessor.process("/auth/tvault/renew", "{}", token)).thenReturn(response);
    oidcUtil.renewUserToken(token);
    assertTrue(true);
}