[feature][GridPtr] Added test for UGGrid and GridPtr using gmsh files.

dune/grid/io/file/dgfparser/gridptr.hh

@@ -477,6 +477,7 @@ namespace Dune
             {
               if(intersection.boundary())
               {
+                // DGFBoundaryParameter::type is of type string.
                 bndParam_[intersection.boundarySegmentIndex()] = std::to_string(boundaryIds[factory.insertionIndex(intersection)]);
               }
             }

dune/grid/io/file/dgfparser/test/CMakeLists.txt

@@ -29,3 +29,8 @@ dune_add_test(NAME test-dgf-ug
               SOURCES test-dgf-ug.cc
               COMPILE_DEFINITIONS DUNE_GRID_EXAMPLE_GRIDS_PATH=\"${PROJECT_SOURCE_DIR}/doc/grids/\"
               CMAKE_GUARD dune-uggrid_FOUND)
+
+dune_add_test(NAME test-dgf-gmsh-ug
+              SOURCES test-dgf-ug.cc
+              COMPILE_DEFINITIONS DUNE_GRID_EXAMPLE_GRIDS_PATH=\"${PROJECT_SOURCE_DIR}/doc/grids/\" DGFTEST_USE_GMSH=1
+              CMAKE_GUARD dune-uggrid_FOUND)

dune/grid/io/file/dgfparser/test/checkdgf.hh

@@ -88,8 +88,13 @@ void runDGFTest(int argc, char ** argv)
   else
   {
     std::stringstream namestr;
+#ifdef DGFTEST_USE_GMSH
+    namestr << "hybrid-testgrid-" << GridType::dimension << "d.msh";
+    filename = std::string( DUNE_GRID_EXAMPLE_GRIDS_PATH ) + "gmsh/" + namestr.str();
+#else
     namestr << "test" << GridType::dimension << "d.dgf";
     filename = std::string( DUNE_GRID_EXAMPLE_GRIDS_PATH ) + "dgf/" + namestr.str();
+#endif
   }
 
   std::cout << "tester: start grid reading; file " << filename << std::endl;