add test for fluid_solver

src/main_fluid_solver.cpp

+/***********************************************************************
+*
+*  Copyright 2015 Max Planck Institute for Dynamics and SelfOrganization
+*
+* Licensed under the Apache License, Version 2.0 (the "License");
+* you may not use this file except in compliance with the License.
+* You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*
+* Contact: Cristian.Lalescu@ds.mpg.de
+*
+************************************************************************/
+
+#include "fluid_solver.hpp"
+#include <iostream>
+
+int myrank, nprocs;
+
+int main(int argc, char *argv[])
+{
+    MPI_Init(&argc, &argv);
+    MPI_Comm_rank(MPI_COMM_WORLD, &myrank);
+    MPI_Comm_size(MPI_COMM_WORLD, &nprocs);
+
+    fluid_solver<float> fs;
+
+    // clean up
+    fftwf_mpi_cleanup();
+    MPI_Finalize();
+    return EXIT_SUCCESS;
+}
+