/usr/lib/python3/dist-packages/networkx/algorithms/components/tests/test_weakly_connected.py is in python3-networkx 1.11-1ubuntu2.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 | #!/usr/bin/env python
from nose.tools import *
import networkx as nx
from networkx import NetworkXNotImplemented
class TestWeaklyConnected:
def setUp(self):
self.gc = []
G = nx.DiGraph()
G.add_edges_from([(1, 2), (2, 3), (2, 8), (3, 4), (3, 7), (4, 5),
(5, 3), (5, 6), (7, 4), (7, 6), (8, 1), (8, 7)])
C = [[3, 4, 5, 7], [1, 2, 8], [6]]
self.gc.append((G, C))
G = nx.DiGraph()
G.add_edges_from([(1, 2), (1, 3), (1, 4), (4, 2), (3, 4), (2, 3)])
C = [[2, 3, 4],[1]]
self.gc.append((G, C))
G = nx.DiGraph()
G.add_edges_from([(1, 2), (2, 3), (3, 2), (2, 1)])
C = [[1, 2, 3]]
self.gc.append((G,C))
# Eppstein's tests
G = nx.DiGraph({0:[1], 1:[2, 3], 2:[4, 5], 3:[4, 5], 4:[6], 5:[], 6:[]})
C = [[0], [1], [2],[ 3], [4], [5], [6]]
self.gc.append((G,C))
G = nx.DiGraph({0:[1], 1:[2, 3, 4], 2:[0, 3], 3:[4], 4:[3]})
C = [[0, 1, 2], [3, 4]]
self.gc.append((G, C))
def test_weakly_connected_components(self):
for G, C in self.gc:
U = G.to_undirected()
w = {frozenset(g) for g in nx.weakly_connected_components(G)}
c = {frozenset(g) for g in nx.connected_components(U)}
assert_equal(w, c)
def test_number_weakly_connected_components(self):
for G, C in self.gc:
U = G.to_undirected()
w = nx.number_weakly_connected_components(G)
c = nx.number_connected_components(U)
assert_equal(w, c)
def test_weakly_connected_component_subgraphs(self):
wcc = nx.weakly_connected_component_subgraphs
cc = nx.connected_component_subgraphs
for G, C in self.gc:
U = G.to_undirected()
w = {frozenset(g) for g in wcc(G)}
c = {frozenset(g) for g in cc(U)}
assert_equal(w, c)
def test_is_weakly_connected(self):
for G, C in self.gc:
U = G.to_undirected()
assert_equal(nx.is_weakly_connected(G), nx.is_connected(U))
def test_connected_raise(self):
G=nx.Graph()
assert_raises(NetworkXNotImplemented,nx.weakly_connected_components, G)
assert_raises(NetworkXNotImplemented,nx.number_weakly_connected_components, G)
assert_raises(NetworkXNotImplemented,nx.weakly_connected_component_subgraphs, G)
assert_raises(NetworkXNotImplemented,nx.is_weakly_connected, G)
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