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Diffstat (limited to 'src/Persistent_cohomology/test/persistent_cohomology_unit_test_multi_field.cpp')
| -rw-r--r-- | src/Persistent_cohomology/test/persistent_cohomology_unit_test_multi_field.cpp | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/Persistent_cohomology/test/persistent_cohomology_unit_test_multi_field.cpp b/src/Persistent_cohomology/test/persistent_cohomology_unit_test_multi_field.cpp new file mode 100644 index 00000000..9e767943 --- /dev/null +++ b/src/Persistent_cohomology/test/persistent_cohomology_unit_test_multi_field.cpp @@ -0,0 +1,115 @@ +#include <iostream> +#include <string> +#include <algorithm> +#include <utility> // std::pair, std::make_pair +#include <cmath> // float comparison +#include <limits> + +#define BOOST_TEST_DYN_LINK +#define BOOST_TEST_MODULE "persistent_cohomology_multi_field" +#include <boost/test/unit_test.hpp> + +#include <gudhi/graph_simplicial_complex.h> +#include <gudhi/reader_utils.h> +#include <gudhi/Simplex_tree.h> +#include <gudhi/Persistent_cohomology.h> +#include <gudhi/Persistent_cohomology/Multi_field.h> + +using namespace Gudhi; +using namespace Gudhi::persistent_cohomology; +using namespace boost::unit_test; + +typedef Simplex_tree<> typeST; + +std::string test_rips_persistence(int min_coefficient, int max_coefficient, double min_persistence) { + // file is copied in CMakeLists.txt + std::ifstream simplex_tree_stream; + simplex_tree_stream.open("simplex_tree_file_for_multi_field_unit_test.txt"); + typeST st; + simplex_tree_stream >> st; + simplex_tree_stream.close(); + + // Display the Simplex_tree + std::cout << "The complex contains " << st.num_simplices() << " simplices" << " - dimension= " << st.dimension() + << std::endl; + + // Check + BOOST_CHECK(st.num_simplices() == 58); + BOOST_CHECK(st.dimension() == 3); + + // Sort the simplices in the order of the filtration + st.initialize_filtration(); + + // Compute the persistence diagram of the complex + Persistent_cohomology<Simplex_tree<>, Multi_field> pcoh(st); + + pcoh.init_coefficients(min_coefficient, max_coefficient); // initializes the coefficient field for homology + // Check infinite rips + pcoh.compute_persistent_cohomology(min_persistence); // Minimal lifetime of homology feature to be recorded. + + std::ostringstream ossRips; + pcoh.output_diagram(ossRips); + + std::string strRips = ossRips.str(); + return strRips; +} + +void test_rips_persistence_in_dimension(int min_dimension, int max_dimension) { + // there are 2 discontinued ensembles + std::string value0(" 0 0.25 inf"); + std::string value1(" 1 0.4 inf"); + // And a big hole - cut in 2 pieces after 0.3 + std::string value2(" 0 0.2 0.3"); + + // For dim <= 1 => + std::string value3(" 1 0.25 inf"); + std::string value4(" 2 0.25 inf"); + std::string value5(" 1 0.3 inf"); + std::string value6(" 2 0.3 inf"); + std::string value7(" 2 0.4 inf"); + + std::cout << "********************************************************************" << std::endl; + std::cout << "TEST OF RIPS_PERSISTENT_COHOMOLOGY_MULTI_FIELD MIN_DIM=" << min_dimension << " MAX_DIM=" << max_dimension << " MIN_PERS=0" << std::endl; + + std::string str_rips_persistence = test_rips_persistence(min_dimension, max_dimension, 0.0); + std::cout << "str_rips_persistence=" << str_rips_persistence << std::endl; + + BOOST_CHECK(str_rips_persistence.find(value0) != std::string::npos); // Check found + BOOST_CHECK(str_rips_persistence.find(value1) != std::string::npos); // Check found + BOOST_CHECK(str_rips_persistence.find(value2) != std::string::npos); // Check found + + if ((min_dimension < 2) && (max_dimension < 2)) { + BOOST_CHECK(str_rips_persistence.find(value3) != std::string::npos); // Check found + BOOST_CHECK(str_rips_persistence.find(value4) != std::string::npos); // Check found + BOOST_CHECK(str_rips_persistence.find(value5) != std::string::npos); // Check found + BOOST_CHECK(str_rips_persistence.find(value6) != std::string::npos); // Check found + BOOST_CHECK(str_rips_persistence.find(value7) != std::string::npos); // Check found + } else { + BOOST_CHECK(str_rips_persistence.find(value3) == std::string::npos); // Check not found + BOOST_CHECK(str_rips_persistence.find(value4) == std::string::npos); // Check not found + BOOST_CHECK(str_rips_persistence.find(value5) == std::string::npos); // Check not found + BOOST_CHECK(str_rips_persistence.find(value6) == std::string::npos); // Check not found + BOOST_CHECK(str_rips_persistence.find(value7) == std::string::npos); // Check not found + } + +} + +BOOST_AUTO_TEST_CASE(rips_persistent_cohomology_multi_field_dim_1_2) { + test_rips_persistence_in_dimension(0, 1); +} + +BOOST_AUTO_TEST_CASE(rips_persistent_cohomology_multi_field_dim_2_3) { + test_rips_persistence_in_dimension(1, 3); +} + +BOOST_AUTO_TEST_CASE(rips_persistent_cohomology_multi_field_dim_1_5) { + test_rips_persistence_in_dimension(1, 5); +} + +// TODO(VR): not working from 6 +// std::string str_rips_persistence = test_rips_persistence(6, 0); +// TODO(VR): division by zero +// std::string str_rips_persistence = test_rips_persistence(0, 0); +// TODO(VR): is result OK of : +// test_rips_persistence_in_dimension(3, 4); + |