From b3f059325604bef21ae2bd556d42cc17b0cac661 Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@math.tamu.edu>
Date: Tue, 30 Oct 2012 13:50:38 +0000
Subject: [PATCH] New test.

git-svn-id: https://svn.dealii.org/trunk@27238 0785d39b-7218-0410-832d-ea1e28bc413d
---
 tests/hp/crash_21.cc          | 168 ++++++++++++++++++++++++++++++++++
 tests/hp/crash_21/cmp/generic |  32 +++++++
 2 files changed, 200 insertions(+)
 create mode 100644 tests/hp/crash_21.cc
 create mode 100644 tests/hp/crash_21/cmp/generic

diff --git a/tests/hp/crash_21.cc b/tests/hp/crash_21.cc
new file mode 100644
index 0000000000..8adf599b17
--- /dev/null
+++ b/tests/hp/crash_21.cc
@@ -0,0 +1,168 @@
+//----------------------------  crash_21.cc  ---------------------------
+//    $Id$
+//    Version: $Name$
+//
+//    Copyright (C) 2012 by the deal.II authors
+//
+//    This file is subject to QPL and may not be  distributed
+//    without copyright and license information. Please refer
+//    to the file deal.II/doc/license.html for the  text  and
+//    further information on this license.
+//
+//----------------------------  crash_21.cc  ---------------------------
+
+
+// a problem uncovered by Baerbel Janssen in that
+// DoFTools::make_flux_sparsity_pattern aborted in 1d with adaptively refined
+// meshes and hp DoFHandlers. this actually uncovered all sorts of other
+// problems that led to a long sequence of assertions triggered everytime one
+// of them was fixed. this test cumulatively makes sure everything is ok
+
+// while there, also test the same code in 2d (3d appears to take too long)
+
+
+#include "../tests.h"
+#include <deal.II/base/logstream.h>
+#include <deal.II/base/quadrature_lib.h>
+#include <deal.II/base/logstream.h>
+#include <deal.II/base/utilities.h>
+
+#include <deal.II/lac/vector.h>
+#include <deal.II/lac/sparse_matrix.h>
+#include <deal.II/lac/constraint_matrix.h>
+
+#include <deal.II/grid/tria.h>
+#include <deal.II/grid/grid_generator.h>
+#include <deal.II/grid/grid_out.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/fe/fe_dgq.h>
+#include <deal.II/lac/compressed_set_sparsity_pattern.h>
+#include <deal.II/hp/dof_handler.h>
+#include <deal.II/hp/fe_values.h>
+
+#include <fstream>
+
+namespace Step
+{
+  using namespace dealii;
+
+  template <int dim>
+  class Problem : public Subscriptor
+  {
+    public:
+      Problem ();
+      ~Problem ();
+
+      void refine_mesh ();
+      void setup_system ();
+
+    private:
+      Triangulation<dim>   	triangulation;
+
+      hp::DoFHandler<dim>   	dof_handler;
+      hp::FECollection<dim>    	fe_collection;
+      hp::QCollection<dim>     	quadrature_collection;
+      hp::QCollection<dim-1>   	face_quadrature_collection;
+
+      ConstraintMatrix     	constraints;
+
+      SparsityPattern      	sparsity_pattern;
+      SparseMatrix<double> 	system_matrix;
+  };
+
+
+
+  template <int dim>
+  Problem<dim>::Problem ()
+		  :
+		  dof_handler (triangulation)
+  {
+    GridGenerator::hyper_cube(triangulation);
+    for (unsigned int degree=1; degree<=7; ++degree)
+      {
+	fe_collection.push_back (FE_DGQ<dim>(degree));
+	quadrature_collection.push_back (QGauss<dim>(degree+1));
+	face_quadrature_collection.push_back (QGauss<dim-1>(degree+1));
+      }
+  }
+
+
+  template <int dim>
+  Problem<dim>::~Problem ()
+  {
+    dof_handler.clear ();
+  }
+
+  template <int dim>
+  void Problem<dim>::setup_system ()
+  {
+    dof_handler.distribute_dofs (fe_collection);
+
+    constraints.clear ();
+    constraints.close ();
+
+
+    CompressedSetSparsityPattern csp (dof_handler.n_dofs(),
+				      dof_handler.n_dofs());
+    DoFTools::make_flux_sparsity_pattern (dof_handler, csp, constraints, false);
+    sparsity_pattern.copy_from (csp);
+    system_matrix.reinit (sparsity_pattern);
+
+    deallog << "   Number of active cells:       "
+	    << triangulation.n_active_cells()
+	    << std::endl
+	    << "   Number of degrees of freedom: "
+	    << dof_handler.n_dofs()
+	    << std::endl
+	    << "   Number of constraints       : "
+	    << constraints.n_constraints()
+	    << std::endl;
+    deallog << "nnz=" << sparsity_pattern.n_nonzero_elements() << std::endl;
+  }
+
+
+  template <int dim>
+  void Problem<dim>::refine_mesh ()
+  {
+    dof_handler.begin_active()->set_refine_flag();
+    triangulation.execute_coarsening_and_refinement ();
+  }
+}
+
+
+template <int dim>
+void test ()
+{
+  using namespace dealii;
+  using namespace Step;
+
+  Problem<dim> problem;
+
+  for (unsigned int cycle=0; cycle<3; ++cycle)
+    {
+      deallog << "Cycle " << cycle << ':' << std::endl;
+      problem.setup_system();
+      problem.refine_mesh();
+    }
+}
+
+
+int main ()
+{
+  std::ofstream logfile("crash_21/output");
+  logfile.precision(2);
+
+  deallog.attach(logfile);
+  deallog.depth_console(0);
+  deallog.threshold_double(1.e-10);
+
+  test<1> ();
+  test<2> ();
+
+  deallog << "OK" << std::endl;
+}
diff --git a/tests/hp/crash_21/cmp/generic b/tests/hp/crash_21/cmp/generic
new file mode 100644
index 0000000000..a1b95b40cb
--- /dev/null
+++ b/tests/hp/crash_21/cmp/generic
@@ -0,0 +1,32 @@
+
+DEAL::Cycle 0:
+DEAL::   Number of active cells:       1
+DEAL::   Number of degrees of freedom: 2
+DEAL::   Number of constraints       : 0
+DEAL::nnz=4
+DEAL::Cycle 1:
+DEAL::   Number of active cells:       2
+DEAL::   Number of degrees of freedom: 4
+DEAL::   Number of constraints       : 0
+DEAL::nnz=16
+DEAL::Cycle 2:
+DEAL::   Number of active cells:       3
+DEAL::   Number of degrees of freedom: 6
+DEAL::   Number of constraints       : 0
+DEAL::nnz=24
+DEAL::Cycle 0:
+DEAL::   Number of active cells:       1
+DEAL::   Number of degrees of freedom: 4
+DEAL::   Number of constraints       : 0
+DEAL::nnz=16
+DEAL::Cycle 1:
+DEAL::   Number of active cells:       4
+DEAL::   Number of degrees of freedom: 16
+DEAL::   Number of constraints       : 0
+DEAL::nnz=192
+DEAL::Cycle 2:
+DEAL::   Number of active cells:       7
+DEAL::   Number of degrees of freedom: 28
+DEAL::   Number of constraints       : 0
+DEAL::nnz=432
+DEAL::OK
-- 
2.39.5