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#!/usr/bin/env python
from nose.tools import *
import networkx
class TestCycles:
def setUp(self):
G=networkx.Graph()
G.add_cycle([0,1,2,3])
G.add_cycle([0,3,4,5])
G.add_cycle([0,1,6,7,8])
G.add_edge(8,9)
self.G=G
def test_cycle_basis(self):
G=self.G
cy=networkx.cycle_basis(G,0)
sort_cy= sorted( sorted(c) for c in cy )
assert_equal(sort_cy, [[0,1,2,3],[0,1,6,7,8],[0,3,4,5]])
cy=networkx.cycle_basis(G,1)
sort_cy= sorted( sorted(c) for c in cy )
assert_equal(sort_cy, [[0,1,2,3],[0,1,6,7,8],[0,3,4,5]])
cy=networkx.cycle_basis(G,9)
sort_cy= sorted( sorted(c) for c in cy )
assert_equal(sort_cy, [[0,1,2,3],[0,1,6,7,8],[0,3,4,5]])
# test disconnected graphs
G.add_cycle(list("ABC"))
cy=networkx.cycle_basis(G,9)
sort_cy= sorted( sorted(c) for c in cy )
assert_equal(sort_cy, [[0,1,2,3],[0,1,6,7,8],[0,3,4,5],['A','B','C']])
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