From b7e19cf798e1dbf203380f1fe48aa0709177d7de Mon Sep 17 00:00:00 2001 From: Marc Glisse Date: Mon, 23 Mar 2020 21:54:56 +0100 Subject: Add test --- src/python/test/test_simplex_generators.py | 57 ++++++++++++++++++++++++++++++ 1 file changed, 57 insertions(+) create mode 100755 src/python/test/test_simplex_generators.py (limited to 'src/python/test') diff --git a/src/python/test/test_simplex_generators.py b/src/python/test/test_simplex_generators.py new file mode 100755 index 00000000..efb5f8e3 --- /dev/null +++ b/src/python/test/test_simplex_generators.py @@ -0,0 +1,57 @@ +""" This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT. + See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details. + Author(s): Marc Glisse + + Copyright (C) 2020 Inria + + Modification(s): + - YYYY/MM Author: Description of the modification +""" + +import gudhi +import numpy as np + + +def test_flag_generators(): + pts = np.array([[0, 0], [0, 1.01], [1, 0], [1.02, 1.03], [100, 0], [100, 3.01], [103, 0], [103.02, 3.03]]) + r = gudhi.RipsComplex(pts, max_edge_length=4) + st = r.create_simplex_tree(max_dimension=50) + st.persistence() + g = st.flag_persistence_generators() + assert np.array_equal(g[0], [[2, 2, 0], [1, 1, 0], [3, 3, 1], [6, 6, 4], [5, 5, 4], [7, 7, 5]]) + assert len(g[1]) == 1 + assert np.array_equal(g[1][0], [[3, 2, 2, 1]]) + assert np.array_equal(g[2], [0, 4]) + assert len(g[3]) == 1 + assert np.array_equal(g[3][0], [[7, 6]]) + + +def test_lower_star_generators(): + st = gudhi.SimplexTree() + st.insert([0, 1, 2], -10) + st.insert([0, 3], -10) + st.insert([1, 3], -10) + st.assign_filtration([2], -1) + st.assign_filtration([3], 0) + st.assign_filtration([0], 1) + st.assign_filtration([1], 2) + st.make_filtration_non_decreasing() + st.persistence(min_persistence=-1) + g = st.lower_star_persistence_generators(min_persistence=-1) + assert len(g[0]) == 2 + assert np.array_equal(g[0][0], [[0, 0], [3, 0], [1, 1]]) + assert np.array_equal(g[0][1], [[1, 1]]) + assert len(g[1]) == 2 + assert np.array_equal(g[1][0], [2]) + assert np.array_equal(g[1][1], [1]) + + +def test_empty(): + st = gudhi.SimplexTree() + st.persistence() + assert st.lower_star_persistence_generators() == ([], []) + g = st.flag_persistence_generators() + assert np.array_equal(g[0], np.empty((0, 3))) + assert g[1] == [] + assert np.array_equal(g[2], []) + assert g[3] == [] -- cgit v1.2.3