/* -*- Mode: C; c-basic-offset:4 ; indent-tabs-mode:nil ; -*- */
/*
 *
 *  (C) 2003 by Argonne National Laboratory.
 *      See COPYRIGHT in top-level directory.
 */
#include "mpi.h"
#include <stdio.h>
#include "mpitest.h"

/*
static char MTEST_Descrip[] = "Test of Win_get_group";
*/

int main(int argc, char *argv[])
{
    int errs = 0;
    int result;
    int buf[10];
    MPI_Win win;
    MPI_Group group, wingroup;
    int minsize = 2;
    MPI_Comm comm;

    MTest_Init(&argc, &argv);

    /* The following illustrates the use of the routines to
     * run through a selection of communicators and datatypes.
     * Use subsets of these for tests that do not involve combinations
     * of communicators, datatypes, and counts of datatypes */
    while (MTestGetIntracommGeneral(&comm, minsize, 1)) {
        if (comm == MPI_COMM_NULL)
            continue;

        MPI_Win_create(buf, sizeof(int) * 10, sizeof(int), MPI_INFO_NULL, comm, &win);
        MPI_Win_get_group(win, &wingroup);
        MPI_Comm_group(comm, &group);
        MPI_Group_compare(group, wingroup, &result);
        if (result != MPI_IDENT) {
            errs++;
            fprintf(stderr, "Group returned by Win_get_group not the same as the input group\n");
        }
        MPI_Group_free(&wingroup);
        MPI_Group_free(&group);
        MPI_Win_free(&win);
        MTestFreeComm(&comm);
    }

    MTest_Finalize(errs);
    return MTestReturnValue(errs);
}