@Test
public void test_listUsers_successfully() {

    String token = "5PDrOhsy4ig8L3EpsJZSLAMg";
    Response response = getMockResponse(HttpStatus.OK, true, "{  \"data\": { \"keys\": [ \"safeadmin\",\"testuser1\", \"testuser2\", \"vaultadmin\"] }}");
    ResponseEntity<String> responseEntityExpected = ResponseEntity.status(HttpStatus.OK).body("{  \"data\": { \"keys\": [ \"safeadmin\",\"testuser1\", \"testuser2\", \"vaultadmin\"] }}");
    when(reqProcessor.process("/auth/userpass/list","{}",token)).thenReturn(response);
    ResponseEntity<String> responseEntity = userPassService.listUsers(token);
    assertEquals(HttpStatus.OK, responseEntity.getStatusCode());
    assertEquals(responseEntityExpected, responseEntity);
}