[test] for mpi_comm_wrapper

dune/xt/common/test/parallel/mpi_comm_wrapper.cc

+// This file is part of the dune-xt-grid project:
+//   https://github.com/dune-community/dune-xt-grid
+// Copyright 2009-2018 dune-xt-grid developers and contributors. All rights reserved.
+// License: Dual licensed as BSD 2-Clause License (http://opensource.org/licenses/BSD-2-Clause)
+//      or  GPL-2.0+ (http://opensource.org/licenses/gpl-license)
+//          with "runtime exception" (http://www.dune-project.org/license.html)
+// Authors:
+//   Rene Milk       (2018)
+
+#include <dune/xt/common/test/main.hxx>
+
+#include <dune/common/unused.hh>
+
+#include <dune/xt/common/parallel/mpi_comm_wrapper.hh>
+
+using namespace Dune;
+using namespace Dune::XT::Common;
+
+MPIHelper::MPICommunicator implicit_convert(MPI_Comm_Wrapper mpi_comm)
+{
+  return mpi_comm.get();
+}
+
+GTEST_TEST(MpiCommWrapper, Global)
+{
+  const auto orig = MPIHelper::getCommunicator();
+  const auto convert = implicit_convert(orig);
+  ASSERT_EQ(orig, convert);
+}
+
+GTEST_TEST(MpiCommWrapper, Local)
+{
+  const auto orig = MPIHelper::getLocalCommunicator();
+  const auto convert = implicit_convert(orig);
+  ASSERT_EQ(orig, convert);
+}

python/test/base.py

@@ -46,18 +46,6 @@ def test_timings():
     timings.output_simple()
 
 
-def test_mpi_wrapper():
-    try:
-        from mpi4py import MPI
-    except ImportError:
-        pytest.skip('optional mpi4py is missing')
-        return
-
-    mpi_comm = MPI.COMM_WORLD
-    from dune.xt.common import CollectiveCommunication
-    comm_def = CollectiveCommunication()
-    comm = CollectiveCommunication(mpi_comm)
-    assert type(comm) is type(comm_def)
-    assert comm.size > 0
-    assert comm.rank < comm.size
-    assert comm.sum(1) == comm.size
+if __name__ == '__main__':
+    from dune.xt.common.test import runmodule
+    runmodule(__file__)

python/test/mpi.py

+# ~~~
+# This file is part of the dune-xt-common project:
+#   https://github.com/dune-community/dune-xt-common
+# Copyright 2009-2018 dune-xt-common developers and contributors. All rights reserved.
+# License: Dual licensed as BSD 2-Clause License (http://opensource.org/licenses/BSD-2-Clause)
+# Authors:
+#   Rene Milk (2018)
+# ~~~
+
+import pytest
+from dune.xt.common.test import load_all_submodule
+
+def test_mpi4py():
+    try:
+        from mpi4py import MPI
+    except ImportError:
+        pytest.skip('optional mpi4py is missing')
+        return
+
+    mpi_comm = MPI.COMM_WORLD
+    from dune.xt.common import CollectiveCommunication
+    comm_def = CollectiveCommunication()
+    comm = CollectiveCommunication(mpi_comm)
+    assert type(comm) is type(comm_def)
+    assert comm.size > 0
+    assert comm.rank < comm.size
+    assert comm.sum(1) == comm.size
+
+
+def test_wrapper():
+    try:
+        from mpi4py import MPI
+    except ImportError:
+        pytest.skip('optional mpi4py is missing')
+        return
+
+    mpi_comm = MPI.COMM_WORLD
+
+
+
+if __name__ == '__main__':
+    from dune.xt.common.test import runmodule
+    runmodule(__file__)
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