1 files changed, 56 insertions, 0 deletions
diff --git a/src/Kernels/test/test_kernel.cpp b/src/Kernels/test/test_kernel.cpp
new file mode 100644
index 00000000..db05fd28
--- /dev/null
+++ b/src/Kernels/test/test_kernel.cpp
@@ -0,0 +1,56 @@
+/*    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):       Mathieu Carrière
+ *
+ *    Copyright (C) 2017  INRIA
+ *
+ *    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 "kernel"
+
+#include <boost/test/unit_test.hpp>
+#include <cmath>  // float comparison
+#include <limits>
+#include <string>
+#include <vector>
+#include <algorithm>  // std::max
+#include <gudhi/kernel.h>
+#include <gudhi/distance_functions.h>
+#include <gudhi/reader_utils.h>
+
+BOOST_AUTO_TEST_CASE(check_PSS) {
+  std::vector< std::pair<double, double> > v1, v2;
+  v1.emplace_back(std::pair<double,double>(0,1));
+  v2.emplace_back(std::pair<double,double>(0,2));
+  BOOST_CHECK(std::abs(Gudhi::kernel::pssk(v1,v2,1) - Gudhi::kernel::approx_pssk(v1,v2,1)) <= 1e-1);
+}
+
+BOOST_AUTO_TEST_CASE(check_PWG) {
+  std::vector< std::pair<double, double> > v1, v2;
+  v1.emplace_back(std::pair<double,double>(0,1));
+  v2.emplace_back(std::pair<double,double>(0,2));
+  BOOST_CHECK(std::abs(Gudhi::kernel::lpwgk(v1,v2,1) - Gudhi::kernel::approx_lpwgk(v1,v2,1)) <= 1e-1);
+  BOOST_CHECK(std::abs(Gudhi::kernel::gpwgk(v1,v2,1,1) - Gudhi::kernel::approx_gpwgk(v1,v2,1,1)) <= 1e-1);
+}
+
+BOOST_AUTO_TEST_CASE(check_SW) {
+  std::vector< std::pair<double, double> > v1, v2;
+  v2.emplace_back(std::pair<double,double>(0,2));
+  BOOST_CHECK(std::abs(Gudhi::kernel::sw(v1,v2) - Gudhi::kernel::approx_sw(v1,v2)) <= 1e-3);
+  BOOST_CHECK(std::abs(Gudhi::kernel::sw(v1,v2) - 2*std::sqrt(2)/3.1415) <= 1e-3);
+}