AtRndmGen_test.cxx

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/** @file AtRndmGen_test.cxx
 *  @brief  unit test for AtRndSvc
 *
 * based on ATLAS software
 *
 **/
 
#include "AthenaKernel/IAtRndmGenSvc.h"
#include "CLHEP/Random/RandomEngine.h"
#include "GaudiKernel/ISvcLocator.h"
#include "StoreGate/tools/hash_functions.h"
#include "TestTools/initGaudi.h"
#include <cassert>
#include <iostream>
 
using std::cerr;
using std::cout;
using std::endl;
using namespace Athena_test;
 
int main() {
  ISvcLocator* pSvcLoc( 0 );
  if ( !initGaudi( "AtRndmGen_test.txt", pSvcLoc ) )
  {
    cerr << "This test can not be run" << endl;
    return 0;
  }
  assert( pSvcLoc );
 
  IAtRndmGenSvc* pAtRndmGen( 0 );
  assert( ( pSvcLoc->service( "AtRndmGenSvc", pAtRndmGen, true ) ).isSuccess() );
  assert( pAtRndmGen );
  //  this depends on AtRndmGen_test.txt
  HepRandomEngine* pEng( pAtRndmGen->GetEngine( "PITHIA_INIT" ) );
  assert( pEng );
  const long* seeds( pEng->getSeeds() );
  assert( 1 == seeds[1] - seeds[0] );
 
  pEng = pAtRndmGen->setOnDefinedSeeds( 1, "PITHIA" );
  assert( pEng );
  seeds = pEng->getSeeds();
  //  this depends on the details of setOnDefinedSeeds
  assert( 9000 == seeds[0] - seeds[1] );
  assert( SG::simpleStringHash( "PITHIA" ) == seeds[0] - 10000 );
 
  cout << "*** AtRndSvc_test OK ***" << endl;
  return 0;
}