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diff --git a/src/Witness_complex/test/simple_witness_complex.cpp b/src/Witness_complex/test/simple_witness_complex.cpp
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+++ b/src/Witness_complex/test/simple_witness_complex.cpp
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+/*    This file is part of the Gudhi Library. The Gudhi library
+ *    (Geometric Understanding in Higher Dimensions) is a generic C++
+ *    library for computational topology.
+ *
+ *    Author(s):       Vincent Rouvreau
+ *
+ *    Copyright (C) 2014  INRIA Sophia Antipolis-Méditerranée (France)
+ *
+ *    This program 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.
+ *
+ *    This program 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, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <iostream>
+#include <ctime>
+//#include "gudhi/graph_simplicial_complex.h"
+#include "gudhi/Simplex_tree.h"
+#include "gudhi/Witness_complex.h"
+
+using namespace Gudhi;
+
+typedef std::vector< Vertex_handle > typeVectorVertex;
+typedef Witness_complex<Simplex_tree<>> WitnessComplex;
+//typedef std::pair<typeVectorVertex, Filtration_value> typeSimplex;
+//typedef std::pair< Simplex_tree<>::Simplex_handle, bool > typePairSimplexBool;
+
+int main (int argc, char * const argv[])
+{
+  Simplex_tree<> complex;
+  std::vector< typeVectorVertex > knn;
+  typeVectorVertex witness0  = {1,0,5,2,6,3,4}; knn.push_back(witness0 );
+  typeVectorVertex witness1  = {2,6,4,5,0,1,3}; knn.push_back(witness1 );
+  typeVectorVertex witness2  = {3,4,2,1,5,6,0}; knn.push_back(witness2 );
+  typeVectorVertex witness3  = {4,2,1,3,5,6,0}; knn.push_back(witness3 );
+  typeVectorVertex witness4  = {5,1,6,0,2,3,4}; knn.push_back(witness4 );
+  typeVectorVertex witness5  = {6,0,5,2,1,3,4}; knn.push_back(witness5 );
+  typeVectorVertex witness6  = {0,5,6,1,2,3,4}; knn.push_back(witness6 );
+  typeVectorVertex witness7  = {2,6,4,5,3,1,0}; knn.push_back(witness7 );
+  typeVectorVertex witness8  = {1,2,5,4,3,6,0}; knn.push_back(witness8 );
+  typeVectorVertex witness9  = {3,4,0,6,5,1,2}; knn.push_back(witness9 );
+  typeVectorVertex witness10 = {5,0,1,3,6,2,4}; knn.push_back(witness10);
+  typeVectorVertex witness11 = {5,6,1,0,2,3,4}; knn.push_back(witness11);
+  typeVectorVertex witness12 = {1,6,0,5,2,3,4}; knn.push_back(witness12);
+  WitnessComplex witnessComplex(knn, complex, 7, 7);
+  assert(witnessComplex.is_witness_complex(knn, true));
+}