From 98fd551d15271242db3fa26b21ee0bf3d0908be2 Mon Sep 17 00:00:00 2001
From: heister <heister@0785d39b-7218-0410-832d-ea1e28bc413d>
Date: Thu, 6 Feb 2014 14:51:04 +0000
Subject: [PATCH] add another test for FunctionParser

git-svn-id: https://svn.dealii.org/trunk@32418 0785d39b-7218-0410-832d-ea1e28bc413d
---
 tests/base/function_parser_03.cc              | 59 +++++++++++++++++++
 ..._parser_03.with_functionparser=true.output |  1 +
 2 files changed, 60 insertions(+)
 create mode 100644 tests/base/function_parser_03.cc
 create mode 100644 tests/base/function_parser_03.with_functionparser=true.output

diff --git a/tests/base/function_parser_03.cc b/tests/base/function_parser_03.cc
new file mode 100644
index 0000000000..7e8250f89d
--- /dev/null
+++ b/tests/base/function_parser_03.cc
@@ -0,0 +1,59 @@
+// ---------------------------------------------------------------------
+// $Id$
+//
+// Copyright (C) 2005 - 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.
+//
+// ---------------------------------------------------------------------
+
+
+
+// functionparser: check if you can change the expression in an existing object
+
+#include "../tests.h"
+#include <fstream>
+#include <iomanip>
+#include <map>
+#include <deal.II/base/logstream.h>
+#include <deal.II/base/point.h>
+#include <deal.II/lac/vector.h>
+#include <deal.II/base/function_parser.h>
+
+
+int main ()
+{
+  initlog();
+
+  // Define some constants that will be used by the function parser
+  std::map<std::string, double> constants;
+  constants["pi"] = numbers::PI;
+
+  // Define the variables that will be used inside the expressions
+  std::string variables = "s,t";
+
+  FunctionParser<2> fp;
+  fp.initialize("s,t", "s*t+1", constants);
+
+  double value = fp.value(Point<2>(2.0,2.5));
+  Assert(abs(1.0+2.0*2.5 - value) < 1e-10, ExcMessage("wrong value"));
+  
+  std::vector<std::string> expressions;
+  expressions.push_back("sin(2*mypi*x)+y");
+  constants["mypi"] = numbers::PI;
+  fp.initialize("x,y", expressions, constants);
+  double value1 = fp.value(Point<2>(1.0,2.5), 0);
+  Assert(abs(2.5 - value1) < 1e-10, ExcMessage("wrong value"));
+  
+}
+
+
+
+
diff --git a/tests/base/function_parser_03.with_functionparser=true.output b/tests/base/function_parser_03.with_functionparser=true.output
new file mode 100644
index 0000000000..8b13789179
--- /dev/null
+++ b/tests/base/function_parser_03.with_functionparser=true.output
@@ -0,0 +1 @@
+
-- 
2.39.5