| #!/usr/bin/env python |
| from nose.tools import * |
| import networkx as nx |
| |
| class TestDistanceRegular: |
| |
| def test_is_distance_regular(self): |
| assert_true(nx.is_distance_regular(nx.icosahedral_graph())) |
| assert_true(nx.is_distance_regular(nx.petersen_graph())) |
| assert_true(nx.is_distance_regular(nx.cubical_graph())) |
| assert_true(nx.is_distance_regular(nx.complete_bipartite_graph(3,3))) |
| assert_true(nx.is_distance_regular(nx.tetrahedral_graph())) |
| assert_true(nx.is_distance_regular(nx.dodecahedral_graph())) |
| assert_true(nx.is_distance_regular(nx.pappus_graph())) |
| assert_true(nx.is_distance_regular(nx.heawood_graph())) |
| assert_true(nx.is_distance_regular(nx.cycle_graph(3))) |
| # no distance regular |
| assert_false(nx.is_distance_regular(nx.path_graph(4))) |
| |
| def test_not_connected(self): |
| G=nx.cycle_graph(4) |
| G.add_cycle([5,6,7]) |
| assert_false(nx.is_distance_regular(G)) |
| |
| |
| def test_global_parameters(self): |
| b,c=nx.intersection_array(nx.cycle_graph(5)) |
| g=nx.global_parameters(b,c) |
| assert_equal(list(g),[(0, 0, 2), (1, 0, 1), (1, 1, 0)]) |
| b,c=nx.intersection_array(nx.cycle_graph(3)) |
| g=nx.global_parameters(b,c) |
| assert_equal(list(g),[(0, 0, 2), (1, 1, 0)]) |
| |
| |
| def test_intersection_array(self): |
| b,c=nx.intersection_array(nx.cycle_graph(5)) |
| assert_equal(b,[2, 1]) |
| assert_equal(c,[1, 1]) |
| b,c=nx.intersection_array(nx.dodecahedral_graph()) |
| assert_equal(b,[3, 2, 1, 1, 1]) |
| assert_equal(c,[1, 1, 1, 2, 3]) |
| b,c=nx.intersection_array(nx.icosahedral_graph()) |
| assert_equal(b,[5, 2, 1]) |
| assert_equal(c,[1, 2, 5]) |