From afca44d5b89fa2078bfd7442c4154bf356df7cf5 Mon Sep 17 00:00:00 2001
From: Luca Heltai <luca.heltai@sissa.it>
Date: Wed, 10 Apr 2019 01:24:10 +0200
Subject: [PATCH] ParsedConvergenceTable, vector functions, single component

---
 tests/base/parsed_convergence_table_04.cc     | 61 +++++++++++++++++++
 tests/base/parsed_convergence_table_04.output |  7 +++
 2 files changed, 68 insertions(+)
 create mode 100644 tests/base/parsed_convergence_table_04.cc
 create mode 100644 tests/base/parsed_convergence_table_04.output

diff --git a/tests/base/parsed_convergence_table_04.cc b/tests/base/parsed_convergence_table_04.cc
new file mode 100644
index 0000000000..3e00ece7bc
--- /dev/null
+++ b/tests/base/parsed_convergence_table_04.cc
@@ -0,0 +1,61 @@
+// ---------------------------------------------------------------------
+//
+// Copyright (C) 2019 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.
+//
+// ---------------------------------------------------------------------
+
+// Test the functionality of the ParsedConvergenceTable class for
+// vector functions, single component
+
+#include <deal.II/base/function_lib.h>
+#include <deal.II/base/parsed_convergence_table.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/lac/vector.h>
+
+#include <map>
+
+#include "../tests.h"
+
+int
+main()
+{
+  initlog();
+
+  ParsedConvergenceTable table({"u", "u"}, {{ParsedConvergenceTableFlags::L2}});
+
+  ParameterHandler prm;
+  table.add_parameters(prm);
+
+  Triangulation<2> tria;
+  GridGenerator::hyper_cube(tria);
+
+  FESystem<2>   fe(FE_Q<2>(1), 2);
+  DoFHandler<2> dh(tria);
+
+  for (unsigned int i = 0; i < 5; ++i)
+    {
+      tria.refine_global(1);
+      dh.distribute_dofs(fe);
+      Vector<double> sol(dh.n_dofs());
+      VectorTools::interpolate(dh, Functions::CosineFunction<2>(2), sol);
+      table.error_from_exact(dh, sol, Functions::CosineFunction<2>(2));
+    }
+  table.output_table(deallog.get_file_stream());
+}
diff --git a/tests/base/parsed_convergence_table_04.output b/tests/base/parsed_convergence_table_04.output
new file mode 100644
index 0000000000..1d09679cb4
--- /dev/null
+++ b/tests/base/parsed_convergence_table_04.output
@@ -0,0 +1,7 @@
+
+dofs cells      u_L2      
+18   4     7.291e-02 -    
+50   16    1.885e-02 2.65 
+162  64    4.752e-03 2.34 
+578  256   1.190e-03 2.18 
+2178 1024  2.978e-04 2.09 
-- 
2.39.5