]> https://gitweb.dealii.org/ - dealii.git/commitdiff
Add a test to ensure that refine_and_coarsen_fixed_number behaves as expected when... 5489/head
authorOliver Sutton <oliversutton@me.com>
Fri, 17 Nov 2017 17:02:19 +0000 (17:02 +0000)
committerOliver Sutton <oliversutton@me.com>
Fri, 17 Nov 2017 17:02:19 +0000 (17:02 +0000)
tests/grid/refine_and_coarsen_fixed_number.cc [new file with mode: 0644]
tests/grid/refine_and_coarsen_fixed_number.output [new file with mode: 0644]

diff --git a/tests/grid/refine_and_coarsen_fixed_number.cc b/tests/grid/refine_and_coarsen_fixed_number.cc
new file mode 100644 (file)
index 0000000..563d63c
--- /dev/null
@@ -0,0 +1,61 @@
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2015 - 2017 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.
+//
+// ---------------------------------------------------------------------
+
+// This test ensures that all cells get refined (resp. coarsened) when
+// the value 1.0 is passed as top_fraction (resp. bottom_fraction) to
+// the function GridRefinement::refine_and_coarsen_fixed_number.
+
+#include "../tests.h"
+#include <deal.II/grid/grid_refinement.h>
+#include <deal.II/grid/tria.h>
+#include <deal.II/grid/grid_generator.h>
+#include <deal.II/lac/vector.h>
+
+using namespace dealii;
+
+int main(int argc, const char *argv[])
+{
+  initlog();
+
+  Triangulation<2> tria;
+  GridGenerator::hyper_cube (tria);
+  tria.refine_global(4);
+
+  Vector<float> indicator(tria.n_active_cells());
+  for (int i = 0; i != indicator.size(); ++i)
+    {
+      indicator[i] = i;
+    }
+
+  deallog << "n_active_cells: " << tria.n_active_cells() << std::endl;
+
+  GridRefinement::refine_and_coarsen_fixed_number(tria, indicator, 1.0, 0.0);
+  tria.execute_coarsening_and_refinement();
+
+  deallog << "n_active_cells: " << tria.n_active_cells() << std::endl;
+
+  indicator.reinit(tria.n_active_cells());
+  for (int i = 0; i != indicator.size(); ++i)
+    {
+      indicator[i] = i;
+    }
+
+  GridRefinement::refine_and_coarsen_fixed_number(tria, indicator, 0.0, 1.0);
+  tria.execute_coarsening_and_refinement();
+
+  deallog << "n_active_cells: " << tria.n_active_cells() << std::endl;
+
+  return 0;
+}
diff --git a/tests/grid/refine_and_coarsen_fixed_number.output b/tests/grid/refine_and_coarsen_fixed_number.output
new file mode 100644 (file)
index 0000000..94c1828
--- /dev/null
@@ -0,0 +1,4 @@
+
+DEAL::n_active_cells: 256
+DEAL::n_active_cells: 1024
+DEAL::n_active_cells: 256

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