From: Wolfgang Bangerth <bangerth@colostate.edu>
Date: Tue, 27 Aug 2019 23:17:57 +0000 (-0600)
Subject: Add a failing test.
X-Git-Tag: v9.2.0-rc1~1041^2
X-Git-Url: https://gitweb.dealii.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1ba58ce6284277b2b1a71b601512f0caf101e1ef;p=dealii.git

Add a failing test.
---

diff --git a/tests/data_out/data_out_postprocessor_vector_complex_01.cc b/tests/data_out/data_out_postprocessor_vector_complex_01.cc
new file mode 100644
index 0000000000..c3420addab
--- /dev/null
+++ b/tests/data_out/data_out_postprocessor_vector_complex_01.cc
@@ -0,0 +1,206 @@
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2000 - 2018 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.md at
+// the top level directory of deal.II.
+//
+// ---------------------------------------------------------------------
+
+
+// tests std::complex DataPostprocessorVector: create a FE field that has two
+// components of the kind cos(something) and sin(something) and then have a
+// postprocessor that computes the sum of squares. should always be equal to one
+//
+// this test uses the shortcut class DataPostprocessorVector to make
+// writing postprocessors simpler
+
+
+#include <deal.II/base/function.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/fe/fe_system.h>
+
+#include <deal.II/grid/grid_generator.h>
+#include <deal.II/grid/tria.h>
+#include <deal.II/grid/tria_accessor.h>
+#include <deal.II/grid/tria_iterator.h>
+
+#include <deal.II/lac/vector.h>
+
+#include <deal.II/numerics/data_out.h>
+#include <deal.II/numerics/data_postprocessor.h>
+#include <deal.II/numerics/matrix_tools.h>
+#include <deal.II/numerics/vector_tools.h>
+
+#include "../tests.h"
+
+
+
+std::ofstream logfile("output");
+
+
+template <int dim>
+class LaplaceProblem
+{
+public:
+  LaplaceProblem();
+  void
+  run();
+
+private:
+  void
+  make_grid_and_dofs();
+  void
+  solve();
+  void
+  output_results() const;
+
+  Triangulation<dim> triangulation;
+  FESystem<dim>      fe;
+  DoFHandler<dim>    dof_handler;
+
+  Vector<std::complex<double>> solution;
+};
+
+
+template <int dim>
+LaplaceProblem<dim>::LaplaceProblem()
+  : fe(FE_Q<dim>(1), 2)
+  , dof_handler(triangulation)
+{}
+
+
+
+template <int dim>
+void
+LaplaceProblem<dim>::make_grid_and_dofs()
+{
+  GridGenerator::hyper_cube(triangulation, 0, 1);
+  triangulation.refine_global(1);
+  triangulation.begin_active()->set_refine_flag();
+  triangulation.execute_coarsening_and_refinement();
+
+  dof_handler.distribute_dofs(fe);
+  solution.reinit(dof_handler.n_dofs());
+}
+
+
+
+template <int dim>
+class SinesAndCosines : public Function<dim, std::complex<double>>
+{
+public:
+  SinesAndCosines()
+    : Function<dim, std::complex<double>>(2)
+  {}
+
+  std::complex<double>
+  value(const Point<dim> &p, const unsigned int component) const
+  {
+    switch (component)
+      {
+        case 0:
+          return std::sin(p.norm());
+        case 1:
+          return std::cos(p.norm());
+        default:
+          Assert(false, ExcNotImplemented());
+          return 0;
+      }
+  }
+};
+
+
+
+template <int dim>
+void
+LaplaceProblem<dim>::solve()
+{
+  // dummy solve. just insert some
+  // values as mentioned at the top
+  // of the file
+  VectorTools::interpolate(dof_handler, SinesAndCosines<dim>(), solution);
+}
+
+
+template <int dim>
+class MyPostprocessor : public DataPostprocessorVector<dim>
+{
+public:
+  MyPostprocessor()
+    : DataPostprocessorVector<dim>("magnitude_times_d", update_values)
+  {}
+
+  virtual void
+  evaluate_vector_field(const DataPostprocessorInputs::Vector<dim> &input_data,
+                        std::vector<Vector<double>> &computed_quantities) const
+  {
+    for (unsigned int q = 0; q < input_data.solution_values.size(); ++q)
+      {
+        Assert(computed_quantities[q].size() == dim, ExcInternalError());
+
+        for (unsigned int d = 0; d < dim; ++d)
+          computed_quantities[q](d) =
+            input_data.solution_values[q](0) *
+              input_data.solution_values[q](0) +
+            input_data.solution_values[q](1) * input_data.solution_values[q](1);
+        AssertThrow(std::fabs(computed_quantities[q](0) - 1) < 1e-12,
+                    ExcInternalError());
+      }
+  }
+};
+
+
+
+template <int dim>
+void
+LaplaceProblem<dim>::output_results() const
+{
+  {
+    // Save the data in the log file
+    MyPostprocessor<dim> p;
+    DataOut<dim>         data_out;
+    data_out.attach_dof_handler(dof_handler);
+    data_out.add_data_vector(solution, p);
+    data_out.build_patches();
+    data_out.write_gnuplot(logfile);
+  }
+}
+
+
+
+template <int dim>
+void
+LaplaceProblem<dim>::run()
+{
+  make_grid_and_dofs();
+  solve();
+  output_results();
+}
+
+
+
+int
+main()
+{
+  logfile << std::setprecision(2);
+  deallog << std::setprecision(2);
+
+  LaplaceProblem<2> laplace_problem_2d;
+  laplace_problem_2d.run();
+
+  LaplaceProblem<3> laplace_problem_3d;
+  laplace_problem_3d.run();
+
+  return 0;
+}
diff --git a/tests/data_out/data_out_postprocessor_vector_complex_01.output b/tests/data_out/data_out_postprocessor_vector_complex_01.output
new file mode 100644
index 0000000000..6e914eca0c
--- /dev/null
+++ b/tests/data_out/data_out_postprocessor_vector_complex_01.output
@@ -0,0 +1,783 @@
+# This file was generated by the deal.II library.
+
+
+#
+# For a description of the GNUPLOT format see the GNUPLOT manual.
+#
+# <x> <y> <magnitude_times_d> <magnitude_times_d> 
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+
+# This file was generated by the deal.II library.
+
+
+#
+# For a description of the GNUPLOT format see the GNUPLOT manual.
+#
+# <x> <y> <z> <magnitude_times_d> <magnitude_times_d> <magnitude_times_d> 
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