test_PolyakovLoop.cpp

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#include "test.h"

#include "gaugeConfig.h"

#include "polyakovLoop.h"

#include "projection.h"
#include "smear.h"

#include "randomNumbers_Mseries.h"

//====================================================================

namespace Test_PolyakovLoop {
  const std::string test_name = "PolyakovLoop";

  //- test-private parameters
  namespace {
    const std::string filename_input  = "test_PolyakovLoop.yaml";
    const std::string filename_output = "stdout";

    class Parameters_Test_PolyakovLoop : public Parameters {
     public:
      Parameters_Test_PolyakovLoop()
      {
        Register_string("gauge_config_status", "NULL");
        Register_string("gauge_config_type_input", "NULL");
        Register_string("config_filename_input", "NULL");

        Register_string("verbose_level", "NULL");

        Register_double("expected_result", 0.0);
      }
    };
  }

  //- prototype declaration
  int polyakovloop(void);

#ifdef USE_TESTMANAGER_AUTOREGISTER
  namespace {
#if defined(USE_GROUP_SU2)
    // Nc=2 is not available.
#else
    static const bool is_registered = TestManager::RegisterTest(
      test_name,
      polyakovloop
      );
#endif
  }
#endif

  //====================================================================
  int polyakovloop(void)
  {
    // #####  parameter setup  #####
    int Nvol = CommonParameters::Nvol();
    int Ndim = CommonParameters::Ndim();

    unique_ptr<Parameters> params_test(new Parameters_Test_PolyakovLoop);
    unique_ptr<Parameters> params_all(new Parameters);

    params_all->Register_Parameters("Test_PolyakovLoop", params_test);

    ParameterManager::read(filename_input, params_all);

    const string str_gconf_status = params_test->get_string("gauge_config_status");
    const string str_gconf_read   = params_test->get_string("gauge_config_type_input");
    const string readfile         = params_test->get_string("config_filename_input");
    const string str_vlevel       = params_test->get_string("verbose_level");

    const bool   do_check        = params_test->is_set("expected_result");
    const double expected_result = do_check ? params_test->get_double("expected_result") : 0.0;

    Bridge::VerboseLevel vl = vout.set_verbose_level(str_vlevel);

    //- print input parameters
    vout.general(vl, "  gconf_status = %s\n", str_gconf_status.c_str());
    vout.general(vl, "  gconf_read   = %s\n", str_gconf_read.c_str());
    vout.general(vl, "  readfile     = %s\n", readfile.c_str());
    vout.general(vl, "  vlevel       = %s\n", str_vlevel.c_str());
    vout.general(vl, "\n");

    //- input parameter check
    int err = 0;
    err += ParameterCheck::non_NULL(str_gconf_status);

    if (err) {
      vout.crucial(vl, "%s: Input parameters have not been set.\n", test_name.c_str());
      exit(EXIT_FAILURE);
    }


    // #####  Set up a gauge configuration  ####
    unique_ptr<Field_G>     U(new Field_G(Nvol, Ndim));
    unique_ptr<GaugeConfig> gconf_read(new GaugeConfig(str_gconf_read));

    if (str_gconf_status == "Continue") {
      gconf_read->read_file(U, readfile);
    } else if (str_gconf_status == "Cold_start") {
      U->set_unit();
    } else if (str_gconf_status == "Hot_start") {
      int i_seed_noise = 1234567;
      unique_ptr<RandomNumbers> rand(new RandomNumbers_Mseries(i_seed_noise));
      U->set_random(rand);
    } else {
      vout.crucial(vl, "%s: unsupported gconf status \"%s\".\n", test_name.c_str(), str_gconf_status.c_str());
      exit(EXIT_FAILURE);
    }


    // #####  object setup  #####
    unique_ptr<PolyakovLoop> ploop(new PolyakovLoop());
    unique_ptr<Timer>        timer(new Timer(test_name));


    // ####  Execution main part  ####
    timer->start();

    dcomplex result = ploop->measure_ploop(*U);
    vout.general(vl, "Polyakov loop = %20.16e %20.16e\n", real(result), imag(result));

    timer->report();


    if (do_check) {
      return Test::verify(real(result), expected_result);
    } else {
      vout.detailed(vl, "check skipped: expected_result not set.\n\n");
      return EXIT_SKIP;
    }
  }
} // namespace Test_PolyakovLoop