def test_shortest_path(self):
deg = [3, 2, 2, 1]
G = nx.generators.havel_hakimi_graph(deg)
cs1 = nxt.creation_sequence(deg, with_labels=True)
for n, m in [(3, 0), (0, 3), (0, 2), (0, 1), (1, 3), (3, 1), (1, 2),
(2, 3)]:
assert nxt.shortest_path(cs1, n, m) == nx.shortest_path(G, n, m)
spl = nxt.shortest_path_length(cs1, 3)
spl2 = nxt.shortest_path_length([t for v, t in cs1], 2)
assert spl == spl2
spld = {}
for j, pl in enumerate(spl):
n = cs1[j][0]
spld[n] = pl
assert spld == nx.single_source_shortest_path_length(G, 3)
assert nxt.shortest_path(["d", "d", "d", "i", "d", "d"], 1,
2) == [1, 2]
assert nxt.shortest_path([3, 1, 2], 1, 2) == [1, 2]
assert pytest.raises(TypeError, nxt.shortest_path, [3.0, 1.0, 2.0], 1,
2)
assert pytest.raises(ValueError, nxt.shortest_path, [3, 1, 2], "a", 2)
assert pytest.raises(ValueError, nxt.shortest_path, [3, 1, 2], 1, "b")
assert nxt.shortest_path([3, 1, 2], 1, 1) == [1]
def test_shortest_path(self):
deg = [3, 2, 2, 1]
G = nx.generators.havel_hakimi_graph(deg)
cs1 = nxt.creation_sequence(deg, with_labels=True)
for n, m in [(3, 0), (0, 3), (0, 2), (0, 1), (1, 3),
(3, 1), (1, 2), (2, 3)]:
assert_equal(nxt.shortest_path(cs1, n, m),
nx.shortest_path(G, n, m))
spl = nxt.shortest_path_length(cs1, 3)
spl2 = nxt.shortest_path_length([t for v, t in cs1], 2)
assert_equal(spl, spl2)
spld = {}
for j, pl in enumerate(spl):
n = cs1[j][0]
spld[n] = pl
assert_equal(spld, nx.single_source_shortest_path_length(G, 3))
assert_equal(nxt.shortest_path(['d', 'd', 'd', 'i', 'd', 'd'], 1, 2), [1, 2])
assert_equal(nxt.shortest_path([3, 1, 2], 1, 2), [1, 2])
assert_raises(TypeError, nxt.shortest_path, [3., 1., 2.], 1, 2)
assert_raises(ValueError, nxt.shortest_path, [3, 1, 2], 'a', 2)
assert_raises(ValueError, nxt.shortest_path, [3, 1, 2], 1, 'b')
assert_equal(nxt.shortest_path([3, 1, 2], 1, 1), [1])
def test_shortest_path(self):
deg = [3, 2, 2, 1]
G = nx.generators.havel_hakimi_graph(deg)
cs1 = nxt.creation_sequence(deg, with_labels=True)
for n, m in [(3, 0), (0, 3), (0, 2), (0, 1), (1, 3),
(3, 1), (1, 2), (2, 3)]:
assert_equal(nxt.shortest_path(cs1, n, m),
nx.shortest_path(G, n, m))
spl = nxt.shortest_path_length(cs1, 3)
spl2 = nxt.shortest_path_length([t for v, t in cs1], 2)
assert_equal(spl, spl2)
spld = {}
for j, pl in enumerate(spl):
n = cs1[j][0]
spld[n] = pl
assert_equal(spld, nx.single_source_shortest_path_length(G, 3))
assert_equal(nxt.shortest_path(['d', 'd', 'd', 'i', 'd', 'd'], 1, 2), [1, 2])
assert_equal(nxt.shortest_path([3, 1, 2], 1, 2), [1, 2])
assert_raises(TypeError, nxt.shortest_path, [3., 1., 2.], 1, 2)
assert_raises(ValueError, nxt.shortest_path, [3, 1, 2], 'a', 2)
assert_raises(ValueError, nxt.shortest_path, [3, 1, 2], 1, 'b')
assert_equal(nxt.shortest_path([3, 1, 2], 1, 1), [1])
def test_creation_sequences(self):
deg=[3,2,2,1]
G=nx.generators.havel_hakimi_graph(deg)
cs0=nxt.creation_sequence(deg)
H0=nxt.threshold_graph(cs0)
assert_equal(''.join(cs0), 'ddid')
cs1=nxt.creation_sequence(deg, with_labels=True)
H1=nxt.threshold_graph(cs1)
assert_equal(cs1, [(1, 'd'), (2, 'd'), (3, 'i'), (0, 'd')])
cs2=nxt.creation_sequence(deg, compact=True)
H2=nxt.threshold_graph(cs2)
assert_equal(cs2, [2, 1, 1])
assert_equal(''.join(nxt.uncompact(cs2)), 'ddid')
assert_true(graph_could_be_isomorphic(H0,G))
assert_true(graph_could_be_isomorphic(H0,H1))
assert_true(graph_could_be_isomorphic(H0,H2))
def test_creation_sequences(self):
deg = [3, 2, 2, 1]
G = nx.generators.havel_hakimi_graph(deg)
cs0 = nxt.creation_sequence(deg)
H0 = nxt.threshold_graph(cs0)
assert_equal(''.join(cs0), 'ddid')
cs1 = nxt.creation_sequence(deg, with_labels=True)
H1 = nxt.threshold_graph(cs1)
assert_equal(cs1, [(1, 'd'), (2, 'd'), (3, 'i'), (0, 'd')])
cs2 = nxt.creation_sequence(deg, compact=True)
H2 = nxt.threshold_graph(cs2)
assert_equal(cs2, [2, 1, 1])
assert_equal(''.join(nxt.uncompact(cs2)), 'ddid')
assert_true(graph_could_be_isomorphic(H0, G))
assert_true(graph_could_be_isomorphic(H0, H1))
assert_true(graph_could_be_isomorphic(H0, H2))
def test_creation_sequences(self):
deg = [3, 2, 2, 1]
G = nx.generators.havel_hakimi_graph(deg)
with pytest.raises(ValueError):
nxt.creation_sequence(deg, with_labels=True, compact=True)
cs0 = nxt.creation_sequence(deg)
H0 = nxt.threshold_graph(cs0)
assert "".join(cs0) == "ddid"
cs1 = nxt.creation_sequence(deg, with_labels=True)
H1 = nxt.threshold_graph(cs1)
assert cs1 == [(1, "d"), (2, "d"), (3, "i"), (0, "d")]
cs2 = nxt.creation_sequence(deg, compact=True)
H2 = nxt.threshold_graph(cs2)
assert cs2 == [2, 1, 1]
assert "".join(nxt.uncompact(cs2)) == "ddid"
assert graph_could_be_isomorphic(H0, G)
assert graph_could_be_isomorphic(H0, H1)
assert graph_could_be_isomorphic(H0, H2)
def test_shortest_path(self):
deg=[3,2,2,1]
G=nx.generators.havel_hakimi_graph(deg)
cs1=nxt.creation_sequence(deg, with_labels=True)
for n, m in [(3, 0), (0, 3), (0, 2), (0, 1), (1, 3),
(3, 1), (1, 2), (2, 3)]:
assert_equal(nxt.shortest_path(cs1,n,m),
nx.shortest_path(G, n, m))
spl=nxt.shortest_path_length(cs1,3)
spl2=nxt.shortest_path_length([ t for v,t in cs1],2)
assert_equal(spl, spl2)
spld={}
for j,pl in enumerate(spl):
n=cs1[j][0]
spld[n]=pl
assert_equal(spld, nx.single_source_shortest_path_length(G, 3))
def test_finding_routines(self):
G=nx.Graph({1:[2],2:[3],3:[4],4:[5],5:[6]})
G.add_edge(2,4)
G.add_edge(2,5)
G.add_edge(2,7)
G.add_edge(3,6)
G.add_edge(4,6)
# Alternating 4 cycle
assert_equal(nxt.find_alternating_4_cycle(G), [1, 2, 3, 6])
# Threshold graph
TG=nxt.find_threshold_graph(G)
assert_true(nxt.is_threshold_graph(TG))
assert_equal(sorted(TG.nodes()), [1, 2, 3, 4, 5, 7])
cs=nxt.creation_sequence(dict(TG.degree()), with_labels=True)
assert_equal(nxt.find_creation_sequence(G), cs)
def test_finding_routines(self):
G = nx.Graph({1: [2], 2: [3], 3: [4], 4: [5], 5: [6]})
G.add_edge(2, 4)
G.add_edge(2, 5)
G.add_edge(2, 7)
G.add_edge(3, 6)
G.add_edge(4, 6)
# Alternating 4 cycle
assert nxt.find_alternating_4_cycle(G) == [1, 2, 3, 6]
# Threshold graph
TG = nxt.find_threshold_graph(G)
assert nxt.is_threshold_graph(TG)
assert sorted(TG.nodes()) == [1, 2, 3, 4, 5, 7]
cs = nxt.creation_sequence(dict(TG.degree()), with_labels=True)
assert nxt.find_creation_sequence(G) == cs
def test_shortest_path(self):
deg = [3, 2, 2, 1]
G = nx.generators.havel_hakimi_graph(deg)
cs1 = nxt.creation_sequence(deg, with_labels=True)
for n, m in [(3, 0), (0, 3), (0, 2), (0, 1), (1, 3), (3, 1), (1, 2),
(2, 3)]:
assert_equal(nxt.shortest_path(cs1, n, m),
nx.shortest_path(G, n, m))
spl = nxt.shortest_path_length(cs1, 3)
spl2 = nxt.shortest_path_length([t for v, t in cs1], 2)
assert_equal(spl, spl2)
spld = {}
for j, pl in enumerate(spl):
n = cs1[j][0]
spld[n] = pl
assert_equal(spld, dict(nx.single_source_shortest_path_length(G, 3)))