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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): Siargey Kachanovich
+ *
+ * Copyright (C) 2016 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/>.
+ */
+
+#define BOOST_TEST_DYN_LINK
+#define BOOST_TEST_MODULE "witness_complex_points"
+#include <boost/test/unit_test.hpp>
+#include <boost/mpl/list.hpp>
+
+#include <gudhi/Simplex_tree.h>
+#include <gudhi/Witness_complex.h>
+#include <gudhi/Landmark_choice_by_random_point.h>
+#include <gudhi/Landmark_choice_by_furthest_point.h>
+
+#include <iostream>
+#include <vector>
+
+typedef std::vector<double> Point;
+typedef std::vector< Vertex_handle > typeVectorVertex;
+typedef Gudhi::Simplex_tree<> Simplex_tree;
+typedef Gudhi::witness_complex::Witness_complex<Simplex_tree> WitnessComplex;
+
+BOOST_AUTO_TEST_CASE(witness_complex_points) {
+ std::vector< typeVectorVertex > knn;
+ std::vector< Point > points;
+ // Add grid points as witnesses
+ for (double i = 0; i < 10; i += 1.0)
+ for (double j = 0; j < 10; j += 1.0)
+ for (double k = 0; k < 10; k += 1.0)
+ points.push_back(Point({i, j, k}));
+
+ bool b_print_output = false;
+ // First test: random choice
+ Simplex_tree complex1;
+ Gudhi::witness_complex::landmark_choice_by_random_point(points, 100, knn);
+ assert(!knn.empty());
+ WitnessComplex witnessComplex1(knn, 100, 3, complex1);
+ BOOST_CHECK(witnessComplex1.is_witness_complex(knn, b_print_output));
+
+ // Second test: furthest choice
+ knn.clear();
+ Simplex_tree complex2;
+ Gudhi::witness_complex::landmark_choice_by_furthest_point(points, 100, knn);
+ WitnessComplex witnessComplex2(knn, 100, 3, complex2);
+ BOOST_CHECK(witnessComplex2.is_witness_complex(knn, b_print_output));
+}