Run standard tests also with YaspGrid

This makes sure at least one grid implementation is always available.

dune/solvers/test/common.hh

@@ -13,6 +13,8 @@
 
 #include <dune/localfunctions/lagrange/pqkfactory.hh>
 
+#include <dune/grid/yaspgrid.hh>
+
 #include <dune/grid/utility/structuredgridfactory.hh>
 
 #if HAVE_UG
@@ -371,7 +373,12 @@ bool checkWithGrid(TestSuite& suite, int uniformRefinements, std::string name)
     std::array<unsigned int,dim> elements;
     std::fill(elements.begin(), elements.end(), 1);
 
-    std::shared_ptr<GridType> grid = Dune::StructuredGridFactory<GridType>::createSimplexGrid(lower,upper,elements);
+    std::shared_ptr<GridType> grid;
+
+    if (std::is_same<GridType,Dune::YaspGrid<dim, Dune::EquidistantOffsetCoordinates<double,dim> > >::value)
+      grid = Dune::StructuredGridFactory<GridType>::createCubeGrid(lower,upper,elements);
+    else
+      grid = Dune::StructuredGridFactory<GridType>::createSimplexGrid(lower,upper,elements);
 
     grid->globalRefine(uniformRefinements);
 
@@ -389,6 +396,8 @@ bool checkWithStandardGrids(TestSuite& suite)
 {
     bool passed = true;
 
+    passed = passed and checkWithGrid<Dune::YaspGrid<2, Dune::EquidistantOffsetCoordinates<double,2> > >(suite, 2, "YaspGrid<2>");
+
 #if HAVE_UG
     passed = passed and checkWithGrid<Dune::UGGrid<2> >(suite, 5, "UGGrid<2>");
     passed = passed and checkWithGrid<Dune::UGGrid<3> >(suite, 3, "UGGrid<3>");