[PPL-devel] [GIT] ppl/ppl(master): Added test showing a bug when solving again a 0-dimensional MIP_Problem.

[Enea Zaffanella]

Module: ppl/ppl
Branch: master
Commit: ea6946e6d9a5db09dcfce63049b965b7052ce1d8
URL:    http://www.cs.unipr.it/git/gitweb.cgi?p=ppl/ppl.git;a=commit;h=ea6946e6d9a5db09dcfce63049b965b7052ce1d8

Author: Enea Zaffanella <zaffanella at cs.unipr.it>
Date:   Mon Oct 17 09:48:26 2011 +0200

Added test showing a bug when solving again a 0-dimensional MIP_Problem.
The bug only manifests when a previously solved 0-dimensional MIP_Problem
is solved again after having modified it (that is, after changing
optimization mode or optimization function).

---

 tests/MIP_Problem/Makefile.am    |    5 +++-
 tests/MIP_Problem/mipproblem4.cc |   40 ++++++++++++++++++++++++++++++++++++++
 2 files changed, 44 insertions(+), 1 deletions(-)

diff --git a/tests/MIP_Problem/Makefile.am b/tests/MIP_Problem/Makefile.am
index 4c2b82e..1ce29a1 100644
--- a/tests/MIP_Problem/Makefile.am
+++ b/tests/MIP_Problem/Makefile.am
@@ -54,7 +54,8 @@ TESTS = \
 ascii_dump_load1 \
 exceptions1 \
 mipproblem1 \
-mipproblem3
+mipproblem3 \
+mipproblem4
 
 XFAIL_TESTS =
 
@@ -74,6 +75,8 @@ mipproblem2_SRCS = mipproblem2.cc
 
 mipproblem3_SOURCES = mipproblem3.cc
 
+mipproblem4_SOURCES = mipproblem4.cc
+
 if BUILD_WATCHDOG_LIBRARY
 WATCHDOG_TESTS = mipproblem2
 
diff --git a/tests/MIP_Problem/mipproblem4.cc b/tests/MIP_Problem/mipproblem4.cc
new file mode 100644
index 0000000..0291a85
--- /dev/null
+++ b/tests/MIP_Problem/mipproblem4.cc
@@ -0,0 +1,40 @@
+/* Test the MIP_Problem class.
+   Copyright (C) 2001-2010 Roberto Bagnara <bagnara at cs.unipr.it>
+
+This file is part of the Parma Polyhedra Library (PPL).
+
+The PPL is free software; you can redistribute it and/or modify it
+under the terms of the GNU General Public License as published by the
+Free Software Foundation; either version 3 of the License, or (at your
+option) any later version.
+
+The PPL is distributed in the hope that it will be useful, but WITHOUT
+ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software Foundation,
+Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02111-1307, USA.
+
+For the most up-to-date information see the Parma Polyhedra Library
+site: http://www.cs.unipr.it/ppl/ . */
+
+#include "ppl_test.hh"
+
+namespace {
+
+bool
+test01() {
+  MIP_Problem mip(0);
+  mip.is_satisfiable();
+  mip.set_optimization_mode(MINIMIZATION);
+  mip.solve();
+  return true;
+}
+
+} // namespace
+
+BEGIN_MAIN
+  DO_TEST(test01);
+END_MAIN