src/testutils/tests/mpitest.cpp

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  35 /*! \internal \file
  36  * \brief
  37  * Tests for infrastructure for running tests under MPI.
  38  *
  39  * \author Teemu Murtola <teemu.murtola@gmail.com>
  40  * \ingroup module_testutils
  41  */
  42 #include "gmxpre.h"
  43
  44 #include "testutils/mpitest.h"
  45
  46 #include "config.h"
  47
  48 #include <gtest/gtest.h>
  49
  50 #include "gromacs/utility/basenetwork.h"
  51 #include "gromacs/utility/gmxmpi.h"
  52
  53 namespace
  54 {
  55
  56 class MpiSelfTest : public ::testing::Test
  57 {
  58     public:
  59         MpiSelfTest() : reached {0, 0}
  60         {}
  61
  62         int reached[2];
  63 };
  64
  65 TEST_F(MpiSelfTest, Runs)
  66 {
  67     GMX_MPI_TEST(2);
  68 #if GMX_THREAD_MPI
  69     reached[gmx_node_rank()] = 1;
  70     MPI_Barrier(MPI_COMM_WORLD);
  71 #else
  72     int value = 1;
  73     MPI_Gather(&value, 1, MPI_INT, reached, 1, MPI_INT, 0, MPI_COMM_WORLD);
  74 #endif
  75     if (gmx_node_rank() == 0)
  76     {
  77         EXPECT_EQ(1, reached[0]);
  78         EXPECT_EQ(1, reached[1]);
  79     }
  80 }
  81
  82 } // namespace