DistributedGridTest_1D.cpp

/***************************************************************************
                          DistributedGridTest.cpp  -  description
                             -------------------
    begin                : Sep 6, 2017
    copyright            : (C) 2017 by Tomas Oberhuber et al.
    email                : tomas.oberhuber@fjfi.cvut.cz
 ***************************************************************************/


#ifdef HAVE_GTEST  
#include <gtest/gtest.h>

#ifdef HAVE_MPI	
   #define USE_MPI

#include <TNL/Meshes/DistributedGrid.h>
#include <TNL/Meshes/DistributedGridSynchronizer.h>
#include <TNL/Functions/MeshFunction.h>

#include <mpi.h>

#include "Functions.h"

using namespace TNL;
using namespace TNL::Containers;
using namespace TNL::Meshes;
using namespace TNL::Functions;
using namespace TNL::Devices;


template<typename DofType>
void setDof_1D(DofType &dof, typename DofType::RealType value)
{
	for(int i=0;i<dof.getSize();i++)
		dof[i]=value;
}

template<typename DofType>
void check_Boundary_1D(int rank, int nproc, DofType dof, typename DofType::RealType expectedValue)
{
	if(rank==0)//Left
	{
		EXPECT_EQ( dof[0], expectedValue) << "Left boundary test failed";
		return;
	}
	
	if(rank==(nproc-1))//Right
	{
		EXPECT_EQ( dof[dof.getSize()-1], expectedValue) << "Right boundary test failed";
		return;
	}
	
};

template<typename DofType>
void check_Overlap_1D(int rank, int nproc, DofType dof, typename DofType::RealType expectedValue)
{
	if(rank==0)//Left
	{
		EXPECT_EQ( dof[dof.getSize()-1], expectedValue) << "Left boundary node overlap test failed";
		return;
	}
	
	if(rank==(nproc-1))
	{
		EXPECT_EQ( dof[0], expectedValue) << "Right boundary node overlap test failed";
		return;
	}
	
	EXPECT_EQ( dof[0], expectedValue) << "left overlap test failed";
	EXPECT_EQ( dof[dof.getSize()-1], expectedValue)<< "right overlap test failed";	
};

template<typename DofType>
void check_Inner_1D(int rank, int nproc, DofType dof, typename DofType::RealType expectedValue)
{
	for(int i=1;i<(dof.getSize()-2);i++) //buď je vlevo hranice, nebo overlap
		EXPECT_EQ( dof[i], expectedValue) << " "<< i;
};

/*
 * Light check of 1D distriover grid and its synchronization. 
 * Number of process is not limitated.
 * Overlap is limitated to 1
 * Only double is tested as dof Real type -- it may be changed, extend test
 * Global size is hardcoded as 10 -- it can be changed, extend test
 */
typedef Grid<1,double,Host,int> MeshType;
typedef MeshFunction<MeshType> MeshFunctionType;
typedef Vector<double,Host,int> DofType;
typedef typename MeshType::Cell Cell;
typedef typename MeshType::IndexType IndexType; 
typedef typename MeshType::PointType PointType; 
typedef DistributedGrid<MeshType> DistributedGridType;
	 
class DistributedGirdTest_1D : public ::testing::Test {
 protected:

	static DistributedGrid<MeshType> *distrgrid;
	static DistributedGridSynchronizer<DistributedGrid<MeshType>,MeshFunctionType,1> *synchronizer;
	static DofType *dof;

	static SharedPointer<MeshType> gridptr;
	static SharedPointer<MeshFunctionType> meshFunctionptr;

	static MeshFunctionEvaluator< MeshFunctionType, ConstFunction<double,1> > constFunctionEvaluator;
	static SharedPointer< ConstFunction<double,1>, Host > constFunctionPtr;

	static MeshFunctionEvaluator< MeshFunctionType, LinearFunction<double,1> > linearFunctionEvaluator;
	static SharedPointer< LinearFunction<double,1>, Host > linearFunctionPtr;

	static int rank;
	static int nproc;	
	 
  // Per-test-case set-up.
  // Called before the first test in this test case.
  // Can be omitted if not needed.
  static void SetUpTestCase() {
	  
    int size=10;
	rank=MPI::COMM_WORLD.Get_rank();
	nproc=MPI::COMM_WORLD.Get_size();
	
	PointType globalOrigin;
	PointType globalProportions;
	MeshType globalGrid;
	
	globalOrigin.x()=-0.5;	
	globalProportions.x()=size;

		
	globalGrid.setDimensions(size);
	globalGrid.setDomain(globalOrigin,globalProportions);
	
	typename DistributedGridType::CoordinatesType overlap;
	overlap.setValue(1);
	distrgrid=new DistributedGrid<MeshType> (globalGrid,overlap);
	
	distrgrid->SetupGrid(*gridptr);
	dof=new DofType(gridptr->template getEntitiesCount< Cell >());
	
	meshFunctionptr->bind(gridptr,*dof);

	synchronizer=new DistributedGridSynchronizer<DistributedGrid<MeshType>,MeshFunctionType,1>(distrgrid);
	
	constFunctionPtr->Number=rank;
  }

  // Per-test-case tear-down.
  // Called after the last test in this test case.
  // Can be omitted if not needed.
  static void TearDownTestCase() {
	  delete dof;
	  delete synchronizer;
	  delete distrgrid;
  }
};

DistributedGrid<MeshType> *DistributedGirdTest_1D::distrgrid=NULL;
DistributedGridSynchronizer<DistributedGrid<MeshType>,MeshFunctionType,1> *DistributedGirdTest_1D::synchronizer=NULL;
DofType *DistributedGirdTest_1D::dof=NULL;
SharedPointer<MeshType> DistributedGirdTest_1D::gridptr;
SharedPointer<MeshFunctionType> DistributedGirdTest_1D::meshFunctionptr;
MeshFunctionEvaluator< MeshFunctionType, ConstFunction<double,1> > DistributedGirdTest_1D::constFunctionEvaluator;
SharedPointer< ConstFunction<double,1>, Host > DistributedGirdTest_1D::constFunctionPtr;
MeshFunctionEvaluator< MeshFunctionType, LinearFunction<double,1> > DistributedGirdTest_1D::linearFunctionEvaluator;
SharedPointer< LinearFunction<double,1>, Host > DistributedGirdTest_1D::linearFunctionPtr;
int DistributedGirdTest_1D::rank;
int DistributedGirdTest_1D::nproc;	


TEST_F(DistributedGirdTest_1D, evaluateAllEntities)
{
	//Check Traversars
	//All entities, witout overlap
	setDof_1D(*dof,-1);
	constFunctionEvaluator.evaluateAllEntities( meshFunctionptr , constFunctionPtr );
	//Printer<MeshType,DofType>::print_dof(rank,*gridptr,*dof);
	check_Boundary_1D(rank, nproc, *dof, rank);
	check_Overlap_1D(rank, nproc, *dof, -1);
	check_Inner_1D(rank, nproc, *dof, rank);
}

TEST_F(DistributedGirdTest_1D, evaluateBoundaryEntities)
{
	//Boundary entities, witout overlap
	setDof_1D(*dof,-1);
	constFunctionEvaluator.evaluateBoundaryEntities( meshFunctionptr , constFunctionPtr );
	check_Boundary_1D(rank, nproc, *dof, rank);
	check_Overlap_1D(rank, nproc, *dof, -1);
	check_Inner_1D(rank, nproc, *dof, -1);
}

TEST_F(DistributedGirdTest_1D, evaluateInteriorEntities)
{
	//Inner entities, witout overlap
	setDof_1D(*dof,-1);
	constFunctionEvaluator.evaluateInteriorEntities( meshFunctionptr , constFunctionPtr );
	check_Boundary_1D(rank, nproc, *dof, -1);
	check_Overlap_1D(rank, nproc, *dof, -1);
	check_Inner_1D(rank, nproc, *dof, rank);
}	

TEST_F(DistributedGirdTest_1D, LinearFunctionTest)
{
	//fill meshfunction with linear function (physical center of cell corresponds with its coordinates in grid) 
	setDof_1D(*dof,-1);
	linearFunctionEvaluator.evaluateAllEntities(meshFunctionptr, linearFunctionPtr);
	synchronizer->Synchronize(*meshFunctionptr);
	
	auto entite= gridptr->template getEntity< Cell >(0);
	entite.refresh();
	EXPECT_EQ(meshFunctionptr->getValue(entite), (*linearFunctionPtr)(entite)) << "Linear function Overlap error on left Edge.";

	auto entite2= gridptr->template getEntity< Cell >((*dof).getSize()-1);
	entite2.refresh();
	EXPECT_EQ(meshFunctionptr->getValue(entite), (*linearFunctionPtr)(entite)) << "Linear function Overlap error on right Edge.";
}

TEST_F(DistributedGirdTest_1D, SynchronizerNeighborTest)
{
	setDof_1D(*dof,-1);
	constFunctionEvaluator.evaluateAllEntities( meshFunctionptr , constFunctionPtr );
	synchronizer->Synchronize(*meshFunctionptr);
	if(rank!=0)
		EXPECT_EQ((*dof)[0],rank-1)<< "Left Overlap was filled by wrong process.";
	if(rank!=nproc-1)
		EXPECT_EQ((*dof)[dof->getSize()-1],rank+1)<< "Right Overlap was filled by wrong process.";
}
	
#else
TEST(NoMPI, NoTest)
{
	ASSERT_TRUE(true) << ":-(";
}
#endif

#endif


#if (defined(HAVE_GTEST) && defined(HAVE_MPI))
#include <sstream>

  class MinimalistBuffredPrinter : public ::testing::EmptyTestEventListener {
	  
  private:
	  std::stringstream sout;
	  
  public:
	  
    // Called before a test starts.
    virtual void OnTestStart(const ::testing::TestInfo& test_info) {
      sout<< test_info.test_case_name() <<"." << test_info.name() << " Start." <<std::endl;
    }

    // Called after a failed assertion or a SUCCEED() invocation.
    virtual void OnTestPartResult(
        const ::testing::TestPartResult& test_part_result) {
      sout << (test_part_result.failed() ? "====Failure=== " : "===Success=== ") 
			  << test_part_result.file_name() << " "
              << test_part_result.line_number() <<std::endl
              << test_part_result.summary() <<std::endl;
    }

    // Called after a test ends.
    virtual void OnTestEnd(const ::testing::TestInfo& test_info) 
	{
		int rank=MPI::COMM_WORLD.Get_rank();
        sout<< test_info.test_case_name() <<"." << test_info.name() << " End." <<std::endl;
	    std::cout << rank << ":" << std::endl << sout.str()<< std::endl;
		sout.str( std::string() );
		sout.clear();
    }
  };
#endif

#include "../../src/UnitTests/GtestMissingError.h"
int main( int argc, char* argv[] )
{
#ifdef HAVE_GTEST
   ::testing::InitGoogleTest( &argc, argv );

	#ifdef HAVE_MPI
	   ::testing::TestEventListeners& listeners =
		  ::testing::UnitTest::GetInstance()->listeners();

	   delete listeners.Release(listeners.default_result_printer());
	   listeners.Append(new MinimalistBuffredPrinter);

	   MPI::Init(argc,argv);
	#endif
	   int result= RUN_ALL_TESTS();

	#ifdef HAVE_MPI
	   MPI::Finalize();
	#endif
	   return result;
#else
   
   throw GtestMissingError();
#endif
}