69 lines
2.3 KiB
Python
69 lines
2.3 KiB
Python
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import networkx as nx
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from networkx import is_strongly_regular
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class TestDistanceRegular(object):
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def test_is_distance_regular(self):
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assert nx.is_distance_regular(nx.icosahedral_graph())
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assert nx.is_distance_regular(nx.petersen_graph())
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assert nx.is_distance_regular(nx.cubical_graph())
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assert nx.is_distance_regular(nx.complete_bipartite_graph(3, 3))
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assert nx.is_distance_regular(nx.tetrahedral_graph())
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assert nx.is_distance_regular(nx.dodecahedral_graph())
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assert nx.is_distance_regular(nx.pappus_graph())
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assert nx.is_distance_regular(nx.heawood_graph())
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assert nx.is_distance_regular(nx.cycle_graph(3))
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# no distance regular
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assert not nx.is_distance_regular(nx.path_graph(4))
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def test_not_connected(self):
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G = nx.cycle_graph(4)
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nx.add_cycle(G, [5, 6, 7])
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assert not nx.is_distance_regular(G)
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def test_global_parameters(self):
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b, c = nx.intersection_array(nx.cycle_graph(5))
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g = nx.global_parameters(b, c)
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assert list(g) == [(0, 0, 2), (1, 0, 1), (1, 1, 0)]
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b, c = nx.intersection_array(nx.cycle_graph(3))
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g = nx.global_parameters(b, c)
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assert list(g) == [(0, 0, 2), (1, 1, 0)]
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def test_intersection_array(self):
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b, c = nx.intersection_array(nx.cycle_graph(5))
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assert b == [2, 1]
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assert c == [1, 1]
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b, c = nx.intersection_array(nx.dodecahedral_graph())
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assert b == [3, 2, 1, 1, 1]
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assert c == [1, 1, 1, 2, 3]
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b, c = nx.intersection_array(nx.icosahedral_graph())
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assert b == [5, 2, 1]
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assert c == [1, 2, 5]
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class TestStronglyRegular(object):
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"""Unit tests for the :func:`~networkx.is_strongly_regular`
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function.
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"""
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def test_cycle_graph(self):
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"""Tests that the cycle graph on five vertices is strongly
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regular.
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"""
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G = nx.cycle_graph(5)
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assert is_strongly_regular(G)
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def test_petersen_graph(self):
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"""Tests that the Petersen graph is strongly regular."""
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G = nx.petersen_graph()
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assert is_strongly_regular(G)
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def test_path_graph(self):
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"""Tests that the path graph is not strongly regular."""
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G = nx.path_graph(4)
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assert not is_strongly_regular(G)
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