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// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
#if HAVE_MPI
#include <mpi.h>
#endif
#include <dune/common/parallel/mpihelper.hh>
int main(int argc, char** argv)
{
Dune::MPIHelper::instance(argc, argv);
int ret = 0;
Dune::No_Comm nc1, nc2;
if ( !(nc1 == nc2))
{
std::cerr << "operator==: No_Comms need to compare equal"<<std::endl;
++ret;
}
if ( nc1 != nc2)
{
std::cerr << "operator!=: No_Comms need to compare equal"<<std::endl;
++ret;
}
if (Dune::FakeMPIHelper::getCommunicator() != Dune::FakeMPIHelper::getLocalCommunicator())
{
std::cerr << "FakeMPIHelper::getCommunicator() and FakeMPIHelper::getLocalCommunicator()) should be equal"<<std::endl;
++ret;
}
nc1 = Dune::FakeMPIHelper::getCommunication();
[[maybe_unused]] Dune::MPIHelper::MPICommunicator comm = Dune::MPIHelper::getCommunication();
#if HAVE_MPI
if (MPI_COMM_SELF != Dune::MPIHelper::getLocalCommunicator())
{
std::cerr<<"Dune::MPIHelper::getLocalCommunicator() gives wrong result"<<std::endl;
++ret;
}
if (MPI_COMM_WORLD != Dune::MPIHelper::getCommunicator())
{
std::cerr<<"Dune::MPIHelper::getCommunicator() gives wrong result"<<std::endl;
++ret;
}
#endif
return ret;
}
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