41 lines
1.3 KiB
Python
41 lines
1.3 KiB
Python
#!/usr/bin/env python
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"""
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ego graph
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---------
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"""
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import networkx as nx
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from networkx.testing.utils import *
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class TestGeneratorEgo():
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def test_ego(self):
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G = nx.star_graph(3)
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H = nx.ego_graph(G, 0)
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assert nx.is_isomorphic(G, H)
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G.add_edge(1, 11)
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G.add_edge(2, 22)
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G.add_edge(3, 33)
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H = nx.ego_graph(G, 0)
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assert nx.is_isomorphic(nx.star_graph(3), H)
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G = nx.path_graph(3)
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H = nx.ego_graph(G, 0)
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assert_edges_equal(H.edges(), [(0, 1)])
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H = nx.ego_graph(G, 0, undirected=True)
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assert_edges_equal(H.edges(), [(0, 1)])
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H = nx.ego_graph(G, 0, center=False)
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assert_edges_equal(H.edges(), [])
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def test_ego_distance(self):
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G = nx.Graph()
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G.add_edge(0, 1, weight=2, distance=1)
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G.add_edge(1, 2, weight=2, distance=2)
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G.add_edge(2, 3, weight=2, distance=1)
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assert_nodes_equal(nx.ego_graph(G, 0, radius=3).nodes(), [0, 1, 2, 3])
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eg = nx.ego_graph(G, 0, radius=3, distance='weight')
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assert_nodes_equal(eg.nodes(), [0, 1])
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eg = nx.ego_graph(G, 0, radius=3, distance='weight', undirected=True)
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assert_nodes_equal(eg.nodes(), [0, 1])
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eg = nx.ego_graph(G, 0, radius=3, distance='distance')
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assert_nodes_equal(eg.nodes(), [0, 1, 2])
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