Add test

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/branches/subsampling_and_spatialsearching@1316 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: a597203ec80289750b8faa2d6e5293211125dd3c

2 files changed, 37 insertions, 3 deletions

diff --git a/src/Subsampling/test/CMakeLists.txt b/src/Subsampling/test/CMakeLists.txt
index 3a45c685..1785b86d 100644
--- a/src/Subsampling/test/CMakeLists.txt
+++ b/src/Subsampling/test/CMakeLists.txt
@@ -1,7 +1,6 @@
 cmake_minimum_required(VERSION 2.6)
-project(GUDHILandmarkingTest)
+project(Subsampling_tests)
 
-# Landmarking test
 if(CGAL_FOUND)
   if (NOT CGAL_VERSION VERSION_LESS 4.8.0)
     message(STATUS "CGAL version: ${CGAL_VERSION}.")
@@ -13,8 +12,9 @@ if(CGAL_FOUND)
       include_directories (BEFORE "../../include")
 
       add_executable( landmarking_UT landmarking.cpp ) 
+      add_executable( Subsampling_test_sparsify_point_set test_sparsify_point_set.cpp)
     else()
-      message(WARNING "Eigen3 not found. Version 3.1.0 is required for Landmarking feature.")
+      message(WARNING "Eigen3 not found. Version 3.1.0 is required for Subsampling feature.")
     endif()
   else()
     message(WARNING "CGAL version: ${CGAL_VERSION} is too old to compile Landmarking feature. Version 4.8.0 is required.")
diff --git a/src/Subsampling/test/test_sparsify_point_set.cpp b/src/Subsampling/test/test_sparsify_point_set.cpp
new file mode 100644
index 00000000..e9d2a8f6
--- /dev/null
+++ b/src/Subsampling/test/test_sparsify_point_set.cpp
@@ -0,0 +1,34 @@
+// #ifdef _DEBUG
+// # define TBB_USE_THREADING_TOOL
+// #endif
+
+#include <gudhi/sparsify_point_set.h>
+
+#include <CGAL/Epick_d.h>
+#include <CGAL/Random.h>
+
+#include <array>
+#include <vector>
+#include <iterator>
+
+int main() {
+  typedef CGAL::Epick_d<CGAL::Dimension_tag<4> >   K;
+  typedef typename K::FT                           FT;
+  typedef typename K::Point_d                      Point_d;
+  
+  CGAL::Random rd;
+
+  std::vector<Point_d> points;
+  for (int i = 0 ; i < 500 ; ++i)
+    points.push_back(Point_d(std::array<FT,4>({rd.get_double(-1.,1),rd.get_double(-1.,1),rd.get_double(-1.,1),rd.get_double(-1.,1)})));
+
+  K k;
+  std::vector<Point_d> results;
+  Gudhi::subsampling::sparsify_point_set(k, points, 0.5, std::back_inserter(results));
+  std::cout << "Before sparsification: " << points.size() << " points.\n";
+  std::cout << "After  sparsification: " << results.size() << " points.\n";
+  //for (auto p : results)
+  //  std::cout << p << "\n";
+
+  return 0;
+}