#!/usr/bin/env python
from nose.tools import *
from nose import SkipTest
import networkx as nx
from networkx.testing.utils import *
import io
import tempfile
import os
class BaseGraphML(object):
def setUp(self):
self.simple_directed_data = """<?xml version="1.0" encoding="UTF-8"?>
<!-- This file was written by the JAVA GraphML Library.-->
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<graph id="G" edgedefault="directed">
<node id="n0"/>
<node id="n1"/>
<node id="n2"/>
<node id="n3"/>
<node id="n4"/>
<node id="n5"/>
<node id="n6"/>
<node id="n7"/>
<node id="n8"/>
<node id="n9"/>
<node id="n10"/>
<edge id="foo" source="n0" target="n2"/>
<edge source="n1" target="n2"/>
<edge source="n2" target="n3"/>
<edge source="n3" target="n5"/>
<edge source="n3" target="n4"/>
<edge source="n4" target="n6"/>
<edge source="n6" target="n5"/>
<edge source="n5" target="n7"/>
<edge source="n6" target="n8"/>
<edge source="n8" target="n7"/>
<edge source="n8" target="n9"/>
</graph>
</graphml>"""
self.simple_directed_graph = nx.DiGraph()
self.simple_directed_graph.add_node('n10')
self.simple_directed_graph.add_edge('n0', 'n2', id='foo')
self.simple_directed_graph.add_edges_from([('n1', 'n2'),
('n2', 'n3'),
('n3', 'n5'),
('n3', 'n4'),
('n4', 'n6'),
('n6', 'n5'),
('n5', 'n7'),
('n6', 'n8'),
('n8', 'n7'),
('n8', 'n9'),
])
self.simple_directed_fh = \
io.BytesIO(self.simple_directed_data.encode('UTF-8'))
self.attribute_data = """<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<key id="d0" for="node" attr.name="color" attr.type="string">
<default>yellow</default>
</key>
<key id="d1" for="edge" attr.name="weight" attr.type="double"/>
<graph id="G" edgedefault="directed">
<node id="n0">
<data key="d0">green</data>
</node>
<node id="n1"/>
<node id="n2">
<data key="d0">blue</data>
</node>
<node id="n3">
<data key="d0">red</data>
</node>
<node id="n4"/>
<node id="n5">
<data key="d0">turquoise</data>
</node>
<edge id="e0" source="n0" target="n2">
<data key="d1">1.0</data>
</edge>
<edge id="e1" source="n0" target="n1">
<data key="d1">1.0</data>
</edge>
<edge id="e2" source="n1" target="n3">
<data key="d1">2.0</data>
</edge>
<edge id="e3" source="n3" target="n2"/>
<edge id="e4" source="n2" target="n4"/>
<edge id="e5" source="n3" target="n5"/>
<edge id="e6" source="n5" target="n4">
<data key="d1">1.1</data>
</edge>
</graph>
</graphml>
"""
self.attribute_graph = nx.DiGraph(id='G')
self.attribute_graph.graph['node_default'] = {'color': 'yellow'}
self.attribute_graph.add_node('n0', color='green')
self.attribute_graph.add_node('n2', color='blue')
self.attribute_graph.add_node('n3', color='red')
self.attribute_graph.add_node('n4')
self.attribute_graph.add_node('n5', color='turquoise')
self.attribute_graph.add_edge('n0', 'n2', id='e0', weight=1.0)
self.attribute_graph.add_edge('n0', 'n1', id='e1', weight=1.0)
self.attribute_graph.add_edge('n1', 'n3', id='e2', weight=2.0)
self.attribute_graph.add_edge('n3', 'n2', id='e3')
self.attribute_graph.add_edge('n2', 'n4', id='e4')
self.attribute_graph.add_edge('n3', 'n5', id='e5')
self.attribute_graph.add_edge('n5', 'n4', id='e6', weight=1.1)
self.attribute_fh = io.BytesIO(self.attribute_data.encode('UTF-8'))
self.attribute_numeric_type_data = """<?xml version='1.0' encoding='utf-8'?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<key attr.name="weight" attr.type="double" for="node" id="d1" />
<key attr.name="weight" attr.type="double" for="edge" id="d0" />
<graph edgedefault="directed">
<node id="n0">
<data key="d1">1</data>
</node>
<node id="n1">
<data key="d1">2.0</data>
</node>
<edge source="n0" target="n1">
<data key="d0">1</data>
</edge>
<edge source="n1" target="n0">
<data key="d0">k</data>
</edge>
<edge source="n1" target="n1">
<data key="d0">1.0</data>
</edge>
</graph>
</graphml>
"""
self.attribute_numeric_type_graph = nx.DiGraph()
self.attribute_numeric_type_graph.add_node('n0', weight=1)
self.attribute_numeric_type_graph.add_node('n1', weight=2.0)
self.attribute_numeric_type_graph.add_edge('n0', 'n1', weight=1)
self.attribute_numeric_type_graph.add_edge('n1', 'n1', weight=1.0)
fh = io.BytesIO(self.attribute_numeric_type_data.encode('UTF-8'))
self.attribute_numeric_type_fh = fh
self.simple_undirected_data = """<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<graph id="G">
<node id="n0"/>
<node id="n1"/>
<node id="n2"/>
<node id="n10"/>
<edge id="foo" source="n0" target="n2"/>
<edge source="n1" target="n2"/>
<edge source="n2" target="n3"/>
</graph>
</graphml>"""
# <edge source="n8" target="n10" directed="false"/>
self.simple_undirected_graph = nx.Graph()
self.simple_undirected_graph.add_node('n10')
self.simple_undirected_graph.add_edge('n0', 'n2', id='foo')
self.simple_undirected_graph.add_edges_from([('n1', 'n2'),
('n2', 'n3'),
])
fh = io.BytesIO(self.simple_undirected_data.encode('UTF-8'))
self.simple_undirected_fh = fh
class TestReadGraphML(BaseGraphML):
def test_read_simple_directed_graphml(self):
G = self.simple_directed_graph
H = nx.read_graphml(self.simple_directed_fh)
assert_equal(sorted(G.nodes()), sorted(H.nodes()))
assert_equal(sorted(G.edges()), sorted(H.edges()))
assert_equal(sorted(G.edges(data=True)),
sorted(H.edges(data=True)))
self.simple_directed_fh.seek(0)
I = nx.parse_graphml(self.simple_directed_data)
assert_equal(sorted(G.nodes()), sorted(I.nodes()))
assert_equal(sorted(G.edges()), sorted(I.edges()))
assert_equal(sorted(G.edges(data=True)),
sorted(I.edges(data=True)))
def test_read_simple_undirected_graphml(self):
G = self.simple_undirected_graph
H = nx.read_graphml(self.simple_undirected_fh)
assert_nodes_equal(G.nodes(), H.nodes())
assert_edges_equal(G.edges(), H.edges())
self.simple_undirected_fh.seek(0)
I = nx.parse_graphml(self.simple_undirected_data)
assert_nodes_equal(G.nodes(), I.nodes())
assert_edges_equal(G.edges(), I.edges())
def test_read_attribute_graphml(self):
G = self.attribute_graph
H = nx.read_graphml(self.attribute_fh)
assert_nodes_equal(G.nodes(True), sorted(H.nodes(data=True)))
ge = sorted(G.edges(data=True))
he = sorted(H.edges(data=True))
for a, b in zip(ge, he):
assert_equal(a, b)
self.attribute_fh.seek(0)
I = nx.parse_graphml(self.attribute_data)
assert_equal(sorted(G.nodes(True)), sorted(I.nodes(data=True)))
ge = sorted(G.edges(data=True))
he = sorted(I.edges(data=True))
for a, b in zip(ge, he):
assert_equal(a, b)
def test_directed_edge_in_undirected(self):
s = """<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<graph id="G">
<node id="n0"/>
<node id="n1"/>
<node id="n2"/>
<edge source="n0" target="n1"/>
<edge source="n1" target="n2" directed='true'/>
</graph>
</graphml>"""
fh = io.BytesIO(s.encode('UTF-8'))
assert_raises(nx.NetworkXError, nx.read_graphml, fh)
assert_raises(nx.NetworkXError, nx.parse_graphml, s)
def test_undirected_edge_in_directed(self):
s = """<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<graph id="G" edgedefault='directed'>
<node id="n0"/>
<node id="n1"/>
<node id="n2"/>
<edge source="n0" target="n1"/>
<edge source="n1" target="n2" directed='false'/>
</graph>
</graphml>"""
fh = io.BytesIO(s.encode('UTF-8'))
assert_raises(nx.NetworkXError, nx.read_graphml, fh)
assert_raises(nx.NetworkXError, nx.parse_graphml, s)
def test_key_raise(self):
s = """<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<key id="d0" for="node" attr.name="color" attr.type="string">
<default>yellow</default>
</key>
<key id="d1" for="edge" attr.name="weight" attr.type="double"/>
<graph id="G" edgedefault="directed">
<node id="n0">
<data key="d0">green</data>
</node>
<node id="n1"/>
<node id="n2">
<data key="d0">blue</data>
</node>
<edge id="e0" source="n0" target="n2">
<data key="d2">1.0</data>
</edge>
</graph>
</graphml>
"""
fh = io.BytesIO(s.encode('UTF-8'))
assert_raises(nx.NetworkXError, nx.read_graphml, fh)
assert_raises(nx.NetworkXError, nx.parse_graphml, s)
def test_hyperedge_raise(self):
s = """<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<key id="d0" for="node" attr.name="color" attr.type="string">
<default>yellow</default>
</key>
<key id="d1" for="edge" attr.name="weight" attr.type="double"/>
<graph id="G" edgedefault="directed">
<node id="n0">
<data key="d0">green</data>
</node>
<node id="n1"/>
<node id="n2">
<data key="d0">blue</data>
</node>
<hyperedge id="e0" source="n0" target="n2">
<endpoint node="n0"/>
<endpoint node="n1"/>
<endpoint node="n2"/>
</hyperedge>
</graph>
</graphml>
"""
fh = io.BytesIO(s.encode('UTF-8'))
assert_raises(nx.NetworkXError, nx.read_graphml, fh)
assert_raises(nx.NetworkXError, nx.parse_graphml, s)
def test_multigraph_keys(self):
# Test that reading multigraphs uses edge id attributes as keys
s = """<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<graph id="G" edgedefault="directed">
<node id="n0"/>
<node id="n1"/>
<edge id="e0" source="n0" target="n1"/>
<edge id="e1" source="n0" target="n1"/>
</graph>
</graphml>
"""
fh = io.BytesIO(s.encode('UTF-8'))
G = nx.read_graphml(fh)
expected = [("n0", "n1", "e0"), ("n0", "n1", "e1")]
assert_equal(sorted(G.edges(keys=True)), expected)
fh.seek(0)
H = nx.parse_graphml(s)
assert_equal(sorted(H.edges(keys=True)), expected)
def test_preserve_multi_edge_data(self):
"""
Test that data and keys of edges are preserved on consequent
write and reads
"""
G = nx.MultiGraph()
G.add_node(1)
G.add_node(2)
G.add_edges_from([
# edges with no data, no keys:
(1, 2),
# edges with only data:
(1, 2, dict(key='data_key1')),
(1, 2, dict(id='data_id2')),
(1, 2, dict(key='data_key3', id='data_id3')),
# edges with both data and keys:
(1, 2, 103, dict(key='data_key4')),
(1, 2, 104, dict(id='data_id5')),
(1, 2, 105, dict(key='data_key6', id='data_id7')),
])
fh = io.BytesIO()
nx.write_graphml(G, fh)
fh.seek(0)
H = nx.read_graphml(fh, node_type=int)
assert_edges_equal(
G.edges(data=True, keys=True), H.edges(data=True, keys=True)
)
assert_equal(G._adj, H._adj)
def test_yfiles_extension(self):
data = """<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:y="http://www.yworks.com/xml/graphml"
xmlns:yed="http://www.yworks.com/xml/yed/3"
xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<!--Created by yFiles for Java 2.7-->
<key for="graphml" id="d0" yfiles.type="resources"/>
<key attr.name="url" attr.type="string" for="node" id="d1"/>
<key attr.name="description" attr.type="string" for="node" id="d2"/>
<key for="node" id="d3" yfiles.type="nodegraphics"/>
<key attr.name="Description" attr.type="string" for="graph" id="d4">
<default/>
</key>
<key attr.name="url" attr.type="string" for="edge" id="d5"/>
<key attr.name="description" attr.type="string" for="edge" id="d6"/>
<key for="edge" id="d7" yfiles.type="edgegraphics"/>
<graph edgedefault="directed" id="G">
<node id="n0">
<data key="d3">
<y:ShapeNode>
<y:Geometry height="30.0" width="30.0" x="125.0" y="100.0"/>
<y:Fill color="#FFCC00" transparent="false"/>
<y:BorderStyle color="#000000" type="line" width="1.0"/>
<y:NodeLabel alignment="center" autoSizePolicy="content"
borderDistance="0.0" fontFamily="Dialog" fontSize="13"
fontStyle="plain" hasBackgroundColor="false" hasLineColor="false"
height="19.1328125" modelName="internal" modelPosition="c"
textColor="#000000" visible="true" width="12.27099609375"
x="8.864501953125" y="5.43359375">1</y:NodeLabel>
<y:Shape type="rectangle"/>
</y:ShapeNode>
</data>
</node>
<node id="n1">
<data key="d3">
<y:ShapeNode>
<y:Geometry height="30.0" width="30.0" x="183.0" y="205.0"/>
<y:Fill color="#FFCC00" transparent="false"/>
<y:BorderStyle color="#000000" type="line" width="1.0"/>
<y:NodeLabel alignment="center" autoSizePolicy="content"
borderDistance="0.0" fontFamily="Dialog" fontSize="13"
fontStyle="plain" hasBackgroundColor="false" hasLineColor="false"
height="19.1328125" modelName="internal" modelPosition="c"
textColor="#000000" visible="true" width="12.27099609375"
x="8.864501953125" y="5.43359375">2</y:NodeLabel>
<y:Shape type="rectangle"/>
</y:ShapeNode>
</data>
</node>
<edge id="e0" source="n0" target="n1">
<data key="d7">
<y:PolyLineEdge>
<y:Path sx="0.0" sy="0.0" tx="0.0" ty="0.0"/>
<y:LineStyle color="#000000" type="line" width="1.0"/>
<y:Arrows source="none" target="standard"/>
<y:BendStyle smoothed="false"/>
</y:PolyLineEdge>
</data>
</edge>
</graph>
<data key="d0">
<y:Resources/>
</data>
</graphml>
"""
fh = io.BytesIO(data.encode('UTF-8'))
G = nx.read_graphml(fh)
assert_equal(list(G.edges()), [('n0', 'n1')])
assert_equal(G['n0']['n1']['id'], 'e0')
assert_equal(G.nodes['n0']['label'], '1')
assert_equal(G.nodes['n1']['label'], '2')
H = nx.parse_graphml(data)
assert_equal(list(H.edges()), [('n0', 'n1')])
assert_equal(H['n0']['n1']['id'], 'e0')
assert_equal(H.nodes['n0']['label'], '1')
assert_equal(H.nodes['n1']['label'], '2')
def test_bool(self):
s = """<?xml version="1.0" encoding="UTF-8"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<key id="d0" for="node" attr.name="test" attr.type="boolean">
<default>false</default>
</key>
<graph id="G" edgedefault="directed">
<node id="n0">
<data key="d0">true</data>
</node>
<node id="n1"/>
<node id="n2">
<data key="d0">false</data>
</node>
<node id="n3">
<data key="d0">FaLsE</data>
</node>
<node id="n4">
<data key="d0">True</data>
</node>
<node id="n5">
<data key="d0">0</data>
</node>
<node id="n6">
<data key="d0">1</data>
</node>
</graph>
</graphml>
"""
fh = io.BytesIO(s.encode('UTF-8'))
G = nx.read_graphml(fh)
H = nx.parse_graphml(s)
for graph in [G, H]:
assert_equal(graph.nodes['n0']['test'], True)
assert_equal(graph.nodes['n2']['test'], False)
assert_equal(graph.nodes['n3']['test'], False)
assert_equal(graph.nodes['n4']['test'], True)
assert_equal(graph.nodes['n5']['test'], False)
assert_equal(graph.nodes['n6']['test'], True)
def test_graphml_header_line(self):
good = """<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<graphml xmlns="http://graphml.graphdrawing.org/xmlns"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://graphml.graphdrawing.org/xmlns
http://graphml.graphdrawing.org/xmlns/1.0/graphml.xsd">
<key id="d0" for="node" attr.name="test" attr.type="boolean">
<default>false</default>
</key>
<graph id="G">
<node id="n0">
<data key="d0">true</data>
</node>
</graph>
</graphml>
"""
bad = """<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<graphml>
<key id="d0" for="node" attr.name="test" attr.type="boolean">
<default>false</default>
</key>
<graph id="G">
<node id="n0">
<data key="d0">true</data>
</node>
</graph>
</graphml>
"""
ugly = """<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<graphml xmlns="https://ghghgh">
<key id="d0" for="node" attr.name="test" attr.type="boolean">
<default>false</default>
</key>
<graph id="G">
<node id="n0">
<data key="d0">true</data>
</node>
</graph>
</graphml>
"""
for s in (good, bad):
fh = io.BytesIO(s.encode('UTF-8'))
G = nx.read_graphml(fh)
H = nx.parse_graphml(s)
for graph in [G, H]:
assert_equal(graph.nodes['n0']['test'], True)
fh = io.BytesIO(ugly.encode('UTF-8'))
assert_raises(nx.NetworkXError, nx.read_graphml, fh)
assert_raises(nx.NetworkXError, nx.parse_graphml, ugly)
class TestWriteGraphML(BaseGraphML):
writer = staticmethod(nx.write_graphml_lxml)
@classmethod
def setupClass(cls):
try:
import lxml.etree
except ImportError:
raise SkipTest('lxml.etree not available.')
def test_write_interface(self):
try:
import lxml.etree
assert_equal(nx.write_graphml, nx.write_graphml_lxml)
except ImportError:
assert_equal(nx.write_graphml, nx.write_graphml_xml)
def test_write_read_simple_directed_graphml(self):
G = self.simple_directed_graph
G.graph['hi'] = 'there'
fh = io.BytesIO()
self.writer(G, fh)
fh.seek(0)
H = nx.read_graphml(fh)
assert_equal(sorted(G.nodes()), sorted(H.nodes()))
assert_equal(sorted(G.edges()), sorted(H.edges()))
assert_equal(sorted(G.edges(data=True)), sorted(H.edges(data=True)))
self.simple_directed_fh.seek(0)
def test_write_read_attribute_numeric_type_graphml(self):
from xml.etree.ElementTree import parse
G = self.attribute_numeric_type_graph
fh = io.BytesIO()
self.writer(G, fh, infer_numeric_types=True)
fh.seek(0)
H = nx.read_graphml(fh)
fh.seek(0)
assert_nodes_equal(G.nodes(), H.nodes())
assert_edges_equal(G.edges(), H.edges())
assert_edges_equal(G.edges(data=True), H.edges(data=True))
self.attribute_numeric_type_fh.seek(0)
xml = parse(fh)
# Children are the key elements, and the graph element
children = xml.getroot().getchildren()
assert_equal(len(children), 3)
keys = [child.items() for child in children[:2]]
assert_equal(len(keys), 2)
assert_in(('attr.type', 'double'), keys[0])
assert_in(('attr.type', 'double'), keys[1])
def test_more_multigraph_keys(self):
"""Writing keys as edge id attributes means keys become strings.
The original keys are stored as data, so read them back in
if `make_str(key) == edge_id`
This allows the adjacency to remain the same.
"""
G = nx.MultiGraph()
G.add_edges_from([('a', 'b', 2), ('a', 'b', 3)])
fd, fname = tempfile.mkstemp()
self.writer(G, fname)
H = nx.read_graphml(fname)
assert_true(H.is_multigraph())
assert_edges_equal(G.edges(keys=True), H.edges(keys=True))
assert_equal(G._adj, H._adj)
os.close(fd)
os.unlink(fname)
def test_default_attribute(self):
G = nx.Graph(name="Fred")
G.add_node(1, label=1, color='green')
nx.add_path(G, [0, 1, 2, 3])
G.add_edge(1, 2, weight=3)
G.graph['node_default'] = {'color': 'yellow'}
G.graph['edge_default'] = {'weight': 7}
fh = io.BytesIO()
self.writer(G, fh)
fh.seek(0)
H = nx.read_graphml(fh, node_type=int)
assert_nodes_equal(G.nodes(), H.nodes())
assert_edges_equal(G.edges(), H.edges())
assert_equal(G.graph, H.graph)
def test_multigraph_to_graph(self):
# test converting multigraph to graph if no parallel edges found
G = nx.MultiGraph()
G.add_edges_from([('a', 'b', 2), ('b', 'c', 3)]) # no multiedges
fd, fname = tempfile.mkstemp()
self.writer(G, fname)
H = nx.read_graphml(fname)
assert_false(H.is_multigraph())
os.close(fd)
os.unlink(fname)
def test_unicode_attributes(self):
G = nx.Graph()
try: # Python 3.x
name1 = chr(2344) + chr(123) + chr(6543)
name2 = chr(5543) + chr(1543) + chr(324)
node_type = str
except ValueError: # Python 2.6+
name1 = unichr(2344) + unichr(123) + unichr(6543)
name2 = unichr(5543) + unichr(1543) + unichr(324)
node_type = unicode
G.add_edge(name1, 'Radiohead', foo=name2)
fd, fname = tempfile.mkstemp()
self.writer(G, fname)
H = nx.read_graphml(fname, node_type=node_type)
assert_equal(G._adj, H._adj)
os.close(fd)
os.unlink(fname)
def test_unicode_escape(self):
# test for handling json escaped stings in python 2 Issue #1880
import json
a = dict(a='{"a": "123"}') # an object with many chars to escape
try: # Python 3.x
chr(2344)
sa = json.dumps(a)
except ValueError: # Python 2.6+
sa = unicode(json.dumps(a))
G = nx.Graph()
G.graph['test'] = sa
fh = io.BytesIO()
self.writer(G, fh)
fh.seek(0)
H = nx.read_graphml(fh)
assert_equal(G.graph['test'], H.graph['test'])
class TestXMLGraphML(TestWriteGraphML):
writer = staticmethod(nx.write_graphml_xml)
@classmethod
def setupClass(cls):
try:
import xml.etree.ElementTree
except ImportError:
raise SkipTest('xml.etree.ElementTree not available.')