message: Add a test about the filtration
diff: @@ -212,5 +212,6 @@ BOOST_AUTO_TEST_CASE(Weighted_alpha_complex_non_visible_points) {
  BOOST_CHECK(stree.filtration(stree.find({0})) == -100.);
  BOOST_CHECK(stree.filtration(stree.find({1})) == stree.filtration(stree.find({0, 1})));
  + BOOST_CHECK(stree.filtration(stree.find({1})) > 100000);
  }
  \ No newline at end of file
  