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mightyscape-1.1-deprecated/extensions/networkx/generators/tests/test_ego.py

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2020-07-30 01:16:18 +02:00
#!/usr/bin/env python
"""
ego graph
---------
"""
import networkx as nx
from networkx.testing.utils import *
class TestGeneratorEgo():
def test_ego(self):
G = nx.star_graph(3)
H = nx.ego_graph(G, 0)
assert nx.is_isomorphic(G, H)
G.add_edge(1, 11)
G.add_edge(2, 22)
G.add_edge(3, 33)
H = nx.ego_graph(G, 0)
assert nx.is_isomorphic(nx.star_graph(3), H)
G = nx.path_graph(3)
H = nx.ego_graph(G, 0)
assert_edges_equal(H.edges(), [(0, 1)])
H = nx.ego_graph(G, 0, undirected=True)
assert_edges_equal(H.edges(), [(0, 1)])
H = nx.ego_graph(G, 0, center=False)
assert_edges_equal(H.edges(), [])
def test_ego_distance(self):
G = nx.Graph()
G.add_edge(0, 1, weight=2, distance=1)
G.add_edge(1, 2, weight=2, distance=2)
G.add_edge(2, 3, weight=2, distance=1)
assert_nodes_equal(nx.ego_graph(G, 0, radius=3).nodes(), [0, 1, 2, 3])
eg = nx.ego_graph(G, 0, radius=3, distance='weight')
assert_nodes_equal(eg.nodes(), [0, 1])
eg = nx.ego_graph(G, 0, radius=3, distance='weight', undirected=True)
assert_nodes_equal(eg.nodes(), [0, 1])
eg = nx.ego_graph(G, 0, radius=3, distance='distance')
assert_nodes_equal(eg.nodes(), [0, 1, 2])