Merge branch 'bugfix/fix-boundarypatchprolongatortest' into 'master'

[bugfix][test] Fix boundarypatchprolongatortest by forwarding grid dimension

See merge request !66

dune/fufem/test/boundarypatchprolongatortest.cc

@@ -14,12 +14,13 @@ struct BoundaryPatchProlongatorTestSuite
 {
 
     //! Extract the part of the boundary with center[dim-1]<=0
+    template<std::size_t dimension>
     struct LowerFaceInsertion {
 
         template <class Intersection>
         bool operator() (const Intersection& it) const {
 
-            return it.geometry().center()[Intersection::dimension-1]<=0;
+            return it.geometry().center()[dimension-1]<=0;
         }
     };
 
@@ -33,7 +34,7 @@ struct BoundaryPatchProlongatorTestSuite
 
         // make coarse level boundary patch
         LevelBP boundary(grid.levelGridView(0));
-        boundary.insertFacesByProperty(LowerFaceInsertion());
+        boundary.insertFacesByProperty(LowerFaceInsertion<GridType::dimension>());
 
         // prolong boundary patch to leaf grid
         LeafBP prolongedLeafBoundary;
@@ -41,7 +42,7 @@ struct BoundaryPatchProlongatorTestSuite
 
         // create the same leaf patch directly
         LeafBP leafBoundary(grid.leafGridView());
-        leafBoundary.insertFacesByProperty(LowerFaceInsertion());
+        leafBoundary.insertFacesByProperty(LowerFaceInsertion<GridType::dimension>());
 
         // Check if patches are the same
         for (const auto& i : leafBoundary)