From: Timo Heister <timo.heister@gmail.com>
Date: Wed, 20 Jan 2016 15:24:19 +0000 (-0500)
Subject: add failing test
X-Git-Tag: v8.4.0-rc2~66^2~9
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd542267b86ac31c10b2e10963bd37b6483ba4ab;p=dealii.git

add failing test
---

diff --git a/tests/codim_one/error_estimator_02.cc b/tests/codim_one/error_estimator_02.cc
new file mode 100644
index 0000000000..665a550139
--- /dev/null
+++ b/tests/codim_one/error_estimator_02.cc
@@ -0,0 +1,160 @@
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2004 - 2015 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 the kelly error estimator uses correct normals on surfaces
+// with kinks by interpolating a function that is inside the FE space
+// and should produce zero errors.
+
+
+
+#include "../tests.h"
+#include <deal.II/base/logstream.h>
+#include <deal.II/base/function_lib.h>
+#include <deal.II/base/quadrature_lib.h>
+#include <deal.II/lac/vector.h>
+#include <deal.II/grid/tria.h>
+#include <deal.II/grid/tria_iterator.h>
+#include <deal.II/grid/tria_accessor.h>
+#include <deal.II/grid/grid_generator.h>
+#include <deal.II/dofs/dof_handler.h>
+#include <deal.II/fe/fe_q.h>
+#include <deal.II/fe/mapping_q.h>
+#include <deal.II/numerics/vector_tools.h>
+#include <deal.II/numerics/error_estimator.h>
+#include <deal.II/numerics/data_out.h>
+
+#include <fstream>
+
+
+template<int dim>
+class MyFunction : public Function<dim>
+{
+public:
+  MyFunction () : Function<dim>(1) {}
+
+  virtual double value (const Point<dim>   &p,
+                        const unsigned int  component) const
+  {
+    return p(0)*p(0)+p(0)*p(1);
+  }
+
+  virtual void   vector_value (const Point<dim>   &p,
+                               Vector<double>     &values) const
+  {
+    values(0) = value(p,0);
+    values(1) = value(p,1);
+  }
+};
+
+
+
+template <int dim>
+Quadrature<dim-1> &
+get_q_face ()
+{
+  static QGauss<dim-1> q(4);
+  return q;
+}
+
+template<>
+Quadrature<0> &
+get_q_face <1>()
+{
+  Quadrature<0> *q = 0;
+  return *q;
+}
+
+template <int dim, int spacedim>
+void make_mesh (Triangulation<dim,spacedim> &tria)
+{
+  // two faces of a hyper_cube
+  Triangulation<spacedim,spacedim> volume_mesh;
+  GridGenerator::hyper_cube(volume_mesh, 0, 1, true);
+  std::set<types::boundary_id> boundary_ids;
+  boundary_ids.insert (1);
+  boundary_ids.insert (2);
+  GridGenerator::extract_boundary_mesh (volume_mesh, tria,
+                                            boundary_ids);
+  tria.refine_global (2);
+}
+
+
+
+
+template <int dim, int spacedim>
+void
+check ()
+{
+  MyFunction<spacedim> function;
+
+  Triangulation<dim,spacedim> tria;
+  make_mesh (tria);
+
+  FE_Q<dim,spacedim> element(2);
+  DoFHandler<dim,spacedim> dof(tria);
+  dof.distribute_dofs(element);
+
+  MappingQ<dim,spacedim> mapping(3);
+  Quadrature<dim-1> &q_face = get_q_face<dim>();
+
+  std::map<types::boundary_id,const Function<spacedim>*> neumann_bc;
+  neumann_bc[0] = &function;
+
+  Vector<double> v (dof.n_dofs());
+  VectorTools::interpolate (mapping, dof, function, v);
+
+  Vector<float> error (tria.n_active_cells());
+
+  KellyErrorEstimator<dim,spacedim>::estimate (mapping, dof, q_face,
+					       typename FunctionMap<spacedim>::type(),
+                                               v, error);
+  deallog << "Estimated error indicators:" << std::endl;
+  for (unsigned int i=0; i<error.size(); ++i)
+    deallog << error(i) << std::endl;
+
+  {
+    DataOut<dim,DoFHandler<dim,spacedim> > data_out;
+    data_out.attach_dof_handler (dof);
+    data_out.add_data_vector (v,
+                              "solution",
+                              DataOut<dim,DoFHandler<dim,spacedim> >::type_dof_data);
+    data_out.add_data_vector (error,
+                              "error");
+    data_out.build_patches ();
+    std::string filename = spacedim == 2 ?
+          "solution-2d-" :
+          "solution-3d-";
+    filename += Utilities::int_to_string(0,2) + ".vtk";
+    std::ofstream output (filename.c_str());
+    data_out.write_vtk (output);
+    
+  }
+  
+  deallog << "OK" << std::endl;
+}
+
+
+int main ()
+{
+  initlog();
+  
+  deallog.push ("1d");
+  check<1,2> ();
+  deallog.pop();
+  deallog.push ("2d");
+  check<2,3> ();
+  deallog.pop();
+}
diff --git a/tests/codim_one/error_estimator_02.output b/tests/codim_one/error_estimator_02.output
new file mode 100644
index 0000000000..e69de29bb2