From c167e79afa3d0a2c73eed425c4dae74d2f2efefd Mon Sep 17 00:00:00 2001
From: Wolfgang Bangerth <bangerth@math.tamu.edu>
Date: Mon, 11 Nov 2013 00:43:42 +0000
Subject: [PATCH] Add another test.

git-svn-id: https://svn.dealii.org/trunk@31614 0785d39b-7218-0410-832d-ea1e28bc413d
---
 tests/base/graph_coloring_06.cc     | 100 ++++++++++++++++++++++++++++
 tests/base/graph_coloring_06.output |  37 ++++++++++
 2 files changed, 137 insertions(+)
 create mode 100644 tests/base/graph_coloring_06.cc
 create mode 100644 tests/base/graph_coloring_06.output

diff --git a/tests/base/graph_coloring_06.cc b/tests/base/graph_coloring_06.cc
new file mode 100644
index 0000000000..d8ea3f24cb
--- /dev/null
+++ b/tests/base/graph_coloring_06.cc
@@ -0,0 +1,100 @@
+// ---------------------------------------------------------------------
+// $Id: graph_coloring_02.cc 30045 2013-07-18 19:18:00Z maier $
+//
+// Copyright (C) 2003 - 2013 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.
+//
+// ---------------------------------------------------------------------
+
+
+
+// Output the sizes of colors
+
+
+#include "../tests.h"
+#include <fstream>
+#include <set>
+#include <vector>
+
+#include <deal.II/base/graph_coloring.h>
+#include <deal.II/dofs/dof_accessor.h>
+#include <deal.II/dofs/dof_handler.h>
+#include <deal.II/fe/fe_q.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/tria.h>
+
+template <int dim>
+std::vector<types::global_dof_index> get_conflict_indices_cfem(
+    typename DoFHandler<dim>::active_cell_iterator const &it) 
+{
+  std::vector<types::global_dof_index> local_dof_indices(it->get_fe().dofs_per_cell);
+  it->get_dof_indices(local_dof_indices);
+
+  return local_dof_indices;
+}
+
+template <int dim>
+void check()
+{
+  deallog << "dim=" << dim <<  std::endl;
+  
+  // Create the Triangulation and the DoFHandler
+  Triangulation<dim> triangulation;
+  GridGenerator::hyper_cube(triangulation, -1, 1);
+  triangulation.refine_global(2);
+  FE_Q<dim> fe(2);
+  DoFHandler<dim> dof_handler(triangulation);
+  dof_handler.distribute_dofs(fe);
+
+  // Create an adapted mesh
+  for (unsigned int l=0; l<11-2*dim; ++l)
+    {
+      typename DoFHandler<dim>::active_cell_iterator
+	cell = dof_handler.begin_active();
+      for (; cell<dof_handler.end(); ++cell)
+	if (cell->center().distance (Point<dim>()) < cell->diameter())
+	  cell->set_refine_flag();
+      triangulation.execute_coarsening_and_refinement();
+    }
+  dof_handler.distribute_dofs(fe);
+
+  deallog << "Total number of cells = " << triangulation.n_active_cells()
+	  << std::endl;
+  
+  // Create the coloring
+  std::vector<std::vector<typename DoFHandler<dim>::active_cell_iterator> >
+    coloring
+    = GraphColoring::make_graph_coloring(dof_handler.begin_active(),
+					 dof_handler.end(),
+					 std_cxx1x::function<std::vector<types::global_dof_index>
+					 (typename DoFHandler<dim>::active_cell_iterator const &)>
+					 (&get_conflict_indices_cfem<dim>));
+
+  for (unsigned int color=0; color<coloring.size(); ++color)
+    deallog << coloring[color].size() << std::endl;
+}
+
+int main()
+{
+  std::ofstream logfile("output");
+  deallog<<std::setprecision(4);
+  deallog<<std::fixed;
+  deallog.attach(logfile);
+  deallog.depth_console(0);
+
+  check<1> ();
+  check<2> ();
+  check<3> ();
+
+  return 0;
+}
diff --git a/tests/base/graph_coloring_06.output b/tests/base/graph_coloring_06.output
new file mode 100644
index 0000000000..3cf0fd2476
--- /dev/null
+++ b/tests/base/graph_coloring_06.output
@@ -0,0 +1,37 @@
+
+DEAL::dim=1
+DEAL::Total number of cells = 22
+DEAL::11
+DEAL::11
+DEAL::dim=2
+DEAL::Total number of cells = 100
+DEAL::12
+DEAL::12
+DEAL::10
+DEAL::13
+DEAL::13
+DEAL::13
+DEAL::13
+DEAL::14
+DEAL::dim=3
+DEAL::Total number of cells = 1184
+DEAL::67
+DEAL::58
+DEAL::46
+DEAL::45
+DEAL::64
+DEAL::67
+DEAL::63
+DEAL::57
+DEAL::55
+DEAL::55
+DEAL::65
+DEAL::69
+DEAL::54
+DEAL::65
+DEAL::59
+DEAL::64
+DEAL::63
+DEAL::64
+DEAL::54
+DEAL::50
-- 
2.39.5