--- /dev/null
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2014 by the deal.II authors
+//
+// This file is part of the deal.II library.
+//
+// The deal.II library is free software; you can use it, redistribute
+// it, and/or modify it under the terms of the GNU Lesser General
+// Public License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+// The full text of the license can be found in the file LICENSE at
+// the top level of the deal.II distribution.
+//
+// ---------------------------------------------------------------------
+
+
+
+// check that VectorTools::interpolate works for FE_Nothing
+// scalar elements.
+
+#include "../tests.h"
+#include <deal.II/base/logstream.h>
+#include <deal.II/base/quadrature_lib.h>
+#include <deal.II/fe/fe_nothing.h>
+#include <deal.II/fe/fe_q.h>
+#include <deal.II/grid/tria.h>
+#include <deal.II/grid/grid_generator.h>
+#include <deal.II/grid/tria_accessor.h>
+#include <deal.II/grid/tria_iterator.h>
+#include <deal.II/grid/grid_refinement.h>
+#include <deal.II/dofs/dof_accessor.h>
+#include <deal.II/dofs/dof_tools.h>
+#include <deal.II/dofs/dof_handler.h>
+#include <deal.II/numerics/vector_tools.h>
+#include <deal.II/numerics/data_out.h>
+#include <deal.II/base/function.h>
+#include <deal.II/hp/fe_collection.h>
+#include <deal.II/hp/dof_handler.h>
+
+
+#include <fstream>
+
+
+template <int dim>
+void test ()
+{
+ Triangulation<dim> triangulation;
+ GridGenerator :: hyper_cube (triangulation, -0.5, 0.5);
+ triangulation.refine_global(3);
+
+ hp::FECollection<dim> fe_collection;
+
+ fe_collection.push_back(FE_Q<dim>(1));
+ fe_collection.push_back(FE_Nothing<dim>());
+
+ hp::DoFHandler<dim> dof_handler (triangulation);
+
+ typename hp::DoFHandler<dim>::active_cell_iterator
+ cell = dof_handler.begin_active(),
+ endc = dof_handler.end();
+
+ for (; cell!= endc; ++cell)
+ {
+ Point<dim> center = cell -> center();
+ if (center[0] < 0)
+ cell->set_active_fe_index(1);
+ else
+ cell->set_active_fe_index(0);
+ }
+
+ dof_handler.distribute_dofs (fe_collection);
+
+ Vector<double> interpolant(dof_handler.n_dofs());
+
+ // interpolate the function
+ VectorTools::interpolate(dof_handler,
+ ConstantFunction<dim>(3.14),
+ interpolant);
+ deallog << interpolant.mean_value() << std::endl;
+}
+
+
+
+int main ()
+{
+ std::ofstream logfile("output");
+ logfile.precision(3);
+ deallog << std::setprecision(3);
+
+ deallog.attach(logfile);
+ deallog.depth_console(0);
+ deallog.threshold_double(1.e-10);
+
+ test<1> ();
+ test<2> ();
+ test<3> ();
+
+
+}