diff --git a/tests/test_cubic.cpp b/tests/test_cubic.cpp
new file mode 100644
index 000000000..278e586cc
--- /dev/null
+++ b/tests/test_cubic.cpp
@@ -0,0 +1,55 @@
+//===========================================================================
+//
+// File: monotcubicinterpolator_test.cpp
+//
+// Created: Tue Dec  8 12:25:30 2009
+//
+// Author(s): Atgeirr F Rasmussen <atgeirr@sintef.no>
+//            Bård Skaflestad     <bard.skaflestad@sintef.no>
+//
+// $Date$
+//
+// $Revision$
+//
+//===========================================================================
+
+/*
+  Copyright 2009, 2010 SINTEF ICT, Applied Mathematics.
+  Copyright 2009, 2010 Statoil ASA.
+
+  This file is part of The Open Reservoir Simulator Project (OpenRS).
+
+  OpenRS 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.
+
+  OpenRS 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 OpenRS.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#include "config.h"
+#include <opm/core/utility/MonotCubicInterpolator.hpp>
+using namespace Opm;
+
+int main()
+{
+    const int num_v = 3;
+    double xv[num_v] = {0.0, 1.0, 2.0};
+    double fv[num_v] = {10.0, 21.0, 2.0};
+    std::vector<double> x(xv, xv + num_v);
+    std::vector<double> f(fv, fv + num_v);
+    MonotCubicInterpolator interp(x, f);
+    interp.evaluate(-1.0);
+    interp.evaluate(0.0);
+    interp.evaluate(0.0001);
+    interp.evaluate(0.5);
+    interp.evaluate(1.0);
+    interp.evaluate(2.0);
+    interp.evaluate(4.0);
+}