Add a test for the new grid implementation

[ci skip]

dune/dorie/CMakeLists.txt

@@ -2,6 +2,7 @@ add_subdirectory(interface)
 add_subdirectory(solver)
 add_subdirectory(impl)
 add_subdirectory(test)
+add_subdirectory(grid-test)
 
 add_executable("dorie" dorie.cc)
 dune_target_link_libraries(dorie dorie-impl ${DUNE_LIBS})

dune/dorie/grid-test/CMakeLists.txt

+add_executable(grid-test grid-test.cc)
+dune_target_link_libraries(grid-test ${DUNE_LIBS})
\ No newline at end of file

dune/dorie/grid-test/grid-test.cc

+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <string>
+#include <iostream>
+#include <cstdio>
+#include <thread>
+
+#include <dune/common/exceptions.hh>
+#include <dune/common/parametertree.hh>
+#include <dune/common/parametertreeparser.hh>
+#include <dune/common/parallel/mpihelper.hh>
+
+#include <dune/grid/yaspgrid.hh>
+#include <dune/grid/uggrid.hh>
+#include <dune/grid/io/file/vtk/vtkwriter.hh>
+
+#include <dune/dorie/solver/util_grid_creator.hh>
+
+int main(int argc, char** argv)
+{
+  try{
+		//Initialize Mpi
+		Dune::MPIHelper& helper = Dune::MPIHelper::instance(argc, argv);
+
+        if (argc!=2)
+			DUNE_THROW(Dune::IOError,"No parameter file specified!");
+		const std::string inifilename = argv[1];
+
+        // Read ini file
+		Dune::ParameterTree inifile;
+		Dune::ParameterTreeParser ptreeparser;
+		ptreeparser.readINITree(inifilename, inifile);
+
+        // maybe attach debugger
+        if (helper.size() > 1 && inifile.get<bool>("misc.debugMode", false))
+        {
+            int i = 0;
+            std::cout << "Attach now" << std::endl;
+            while (0 == i)
+                std::this_thread::sleep_for(std::chrono::milliseconds(100));
+        }
+
+
+        // build the grid creator
+        using GridType = Dune::UGGrid<2>;
+        Dune::Dorie::GridCreator<GridType> gc(helper, inifile);
+        auto [grid, mapper] = gc.get_grid_and_mapper();
+
+        auto element_map = mapper.get_element_index_map();
+        auto boundary_map = mapper.get_boundary_index_map();
+
+        std::cout << "Process " << helper.rank() << std::endl;
+        std::cout << "Element index map (" << element_map.size() << "): ";
+        for (auto&& value : element_map) {
+            std::cout << value << " ";
+        }
+        std::cout << std::endl;
+
+        auto gv = grid->levelGridView(0);
+        Dune::VTKWriter writer(gv);
+        writer.addCellData(element_map, "mapping");
+        writer.pwrite(
+            inifile.get<std::string>("output.fileName"),
+			inifile.get<std::string>("output.outputPath"),
+			"./");
+
+		return 0;
+    }
+    catch (Dune::Exception &e){
+		std::cerr << "Dune reported error: " << e << std::endl;
+		return 1;
+    }
+    catch (...){
+		std::cerr << "Unknown exception thrown!" << std::endl;
+		throw;
+		return 1;
+    }
+}
\ No newline at end of file