# -*- coding: utf-8 -*- """ Unit tests for adjlist. """ import io import pytest import os import tempfile import networkx as nx from networkx.testing import (assert_nodes_equal, assert_edges_equal, assert_graphs_equal) class TestAdjlist(): @classmethod def setup_class(cls): cls.G = nx.Graph(name="test") e = [('a', 'b'), ('b', 'c'), ('c', 'd'), ('d', 'e'), ('e', 'f'), ('a', 'f')] cls.G.add_edges_from(e) cls.G.add_node('g') cls.DG = nx.DiGraph(cls.G) cls.XG = nx.MultiGraph() cls.XG.add_weighted_edges_from([(1, 2, 5), (1, 2, 5), (1, 2, 1), (3, 3, 42)]) cls.XDG = nx.MultiDiGraph(cls.XG) def test_read_multiline_adjlist_1(self): # Unit test for https://networkx.lanl.gov/trac/ticket/252 s = b"""# comment line 1 2 # comment line 2 3 """ bytesIO = io.BytesIO(s) G = nx.read_multiline_adjlist(bytesIO) adj = {'1': {'3': {}, '2': {}}, '3': {'1': {}}, '2': {'1': {}}} assert_graphs_equal(G, nx.Graph(adj)) def test_unicode(self): G = nx.Graph() try: # Python 3.x name1 = chr(2344) + chr(123) + chr(6543) name2 = chr(5543) + chr(1543) + chr(324) except ValueError: # Python 2.6+ name1 = unichr(2344) + unichr(123) + unichr(6543) name2 = unichr(5543) + unichr(1543) + unichr(324) G.add_edge(name1, 'Radiohead', **{name2: 3}) fd, fname = tempfile.mkstemp() nx.write_multiline_adjlist(G, fname) H = nx.read_multiline_adjlist(fname) assert_graphs_equal(G, H) os.close(fd) os.unlink(fname) def test_latin1_err(self): G = nx.Graph() try: # Python 3.x name1 = chr(2344) + chr(123) + chr(6543) name2 = chr(5543) + chr(1543) + chr(324) except ValueError: # Python 2.6+ name1 = unichr(2344) + unichr(123) + unichr(6543) name2 = unichr(5543) + unichr(1543) + unichr(324) G.add_edge(name1, 'Radiohead', **{name2: 3}) fd, fname = tempfile.mkstemp() pytest.raises(UnicodeEncodeError, nx.write_multiline_adjlist, G, fname, encoding='latin-1') os.close(fd) os.unlink(fname) def test_latin1(self): G = nx.Graph() try: # Python 3.x blurb = chr(1245) # just to trigger the exception name1 = 'Bj' + chr(246) + 'rk' name2 = chr(220) + 'ber' except ValueError: # Python 2.6+ name1 = 'Bj' + unichr(246) + 'rk' name2 = unichr(220) + 'ber' G.add_edge(name1, 'Radiohead', **{name2: 3}) fd, fname = tempfile.mkstemp() nx.write_multiline_adjlist(G, fname, encoding='latin-1') H = nx.read_multiline_adjlist(fname, encoding='latin-1') assert_graphs_equal(G, H) os.close(fd) os.unlink(fname) def test_adjlist_graph(self): G = self.G (fd, fname) = tempfile.mkstemp() nx.write_adjlist(G, fname) H = nx.read_adjlist(fname) H2 = nx.read_adjlist(fname) assert H != H2 # they should be different graphs assert_nodes_equal(list(H), list(G)) assert_edges_equal(list(H.edges()), list(G.edges())) os.close(fd) os.unlink(fname) def test_adjlist_digraph(self): G = self.DG (fd, fname) = tempfile.mkstemp() nx.write_adjlist(G, fname) H = nx.read_adjlist(fname, create_using=nx.DiGraph()) H2 = nx.read_adjlist(fname, create_using=nx.DiGraph()) assert H != H2 # they should be different graphs assert_nodes_equal(list(H), list(G)) assert_edges_equal(list(H.edges()), list(G.edges())) os.close(fd) os.unlink(fname) def test_adjlist_integers(self): (fd, fname) = tempfile.mkstemp() G = nx.convert_node_labels_to_integers(self.G) nx.write_adjlist(G, fname) H = nx.read_adjlist(fname, nodetype=int) H2 = nx.read_adjlist(fname, nodetype=int) assert_nodes_equal(list(H), list(G)) assert_edges_equal(list(H.edges()), list(G.edges())) os.close(fd) os.unlink(fname) def test_adjlist_multigraph(self): G = self.XG (fd, fname) = tempfile.mkstemp() nx.write_adjlist(G, fname) H = nx.read_adjlist(fname, nodetype=int, create_using=nx.MultiGraph()) H2 = nx.read_adjlist(fname, nodetype=int, create_using=nx.MultiGraph()) assert H != H2 # they should be different graphs assert_nodes_equal(list(H), list(G)) assert_edges_equal(list(H.edges()), list(G.edges())) os.close(fd) os.unlink(fname) def test_adjlist_multidigraph(self): G = self.XDG (fd, fname) = tempfile.mkstemp() nx.write_adjlist(G, fname) H = nx.read_adjlist(fname, nodetype=int, create_using=nx.MultiDiGraph()) H2 = nx.read_adjlist(fname, nodetype=int, create_using=nx.MultiDiGraph()) assert H != H2 # they should be different graphs assert_nodes_equal(list(H), list(G)) assert_edges_equal(list(H.edges()), list(G.edges())) os.close(fd) os.unlink(fname) def test_adjlist_delimiter(self): fh = io.BytesIO() G = nx.path_graph(3) nx.write_adjlist(G, fh, delimiter=':') fh.seek(0) H = nx.read_adjlist(fh, nodetype=int, delimiter=':') assert_nodes_equal(list(H), list(G)) assert_edges_equal(list(H.edges()), list(G.edges())) class TestMultilineAdjlist(): @classmethod def setup_class(cls): cls.G = nx.Graph(name="test") e = [('a', 'b'), ('b', 'c'), ('c', 'd'), ('d', 'e'), ('e', 'f'), ('a', 'f')] cls.G.add_edges_from(e) cls.G.add_node('g') cls.DG = nx.DiGraph(cls.G) cls.DG.remove_edge('b', 'a') cls.DG.remove_edge('b', 'c') cls.XG = nx.MultiGraph() cls.XG.add_weighted_edges_from([(1, 2, 5), (1, 2, 5), (1, 2, 1), (3, 3, 42)]) cls.XDG = nx.MultiDiGraph(cls.XG) def test_multiline_adjlist_graph(self): G = self.G (fd, fname) = tempfile.mkstemp() nx.write_multiline_adjlist(G, fname) H = nx.read_multiline_adjlist(fname) H2 = nx.read_multiline_adjlist(fname) assert H != H2 # they should be different graphs assert_nodes_equal(list(H), list(G)) assert_edges_equal(list(H.edges()), list(G.edges())) os.close(fd) os.unlink(fname) def test_multiline_adjlist_digraph(self): G = self.DG (fd, fname) = tempfile.mkstemp() nx.write_multiline_adjlist(G, fname) H = nx.read_multiline_adjlist(fname, create_using=nx.DiGraph()) H2 = nx.read_multiline_adjlist(fname, create_using=nx.DiGraph()) assert H != H2 # they should be different graphs assert_nodes_equal(list(H), list(G)) assert_edges_equal(list(H.edges()), list(G.edges())) os.close(fd) os.unlink(fname) def test_multiline_adjlist_integers(self): (fd, fname) = tempfile.mkstemp() G = nx.convert_node_labels_to_integers(self.G) nx.write_multiline_adjlist(G, fname) H = nx.read_multiline_adjlist(fname, nodetype=int) H2 = nx.read_multiline_adjlist(fname, nodetype=int) assert_nodes_equal(list(H), list(G)) assert_edges_equal(list(H.edges()), list(G.edges())) os.close(fd) os.unlink(fname) def test_multiline_adjlist_multigraph(self): G = self.XG (fd, fname) = tempfile.mkstemp() nx.write_multiline_adjlist(G, fname) H = nx.read_multiline_adjlist(fname, nodetype=int, create_using=nx.MultiGraph()) H2 = nx.read_multiline_adjlist(fname, nodetype=int, create_using=nx.MultiGraph()) assert H != H2 # they should be different graphs assert_nodes_equal(list(H), list(G)) assert_edges_equal(list(H.edges()), list(G.edges())) os.close(fd) os.unlink(fname) def test_multiline_adjlist_multidigraph(self): G = self.XDG (fd, fname) = tempfile.mkstemp() nx.write_multiline_adjlist(G, fname) H = nx.read_multiline_adjlist(fname, nodetype=int, create_using=nx.MultiDiGraph()) H2 = nx.read_multiline_adjlist(fname, nodetype=int, create_using=nx.MultiDiGraph()) assert H != H2 # they should be different graphs assert_nodes_equal(list(H), list(G)) assert_edges_equal(list(H.edges()), list(G.edges())) os.close(fd) os.unlink(fname) def test_multiline_adjlist_delimiter(self): fh = io.BytesIO() G = nx.path_graph(3) nx.write_multiline_adjlist(G, fh, delimiter=':') fh.seek(0) H = nx.read_multiline_adjlist(fh, nodetype=int, delimiter=':') assert_nodes_equal(list(H), list(G)) assert_edges_equal(list(H.edges()), list(G.edges()))