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mightyscape-1.1-deprecated/extensions/fablabchemnitz/networkx/readwrite/tests/test_yaml.py
2020-08-30 12:36:33 +02:00

55 lines
1.3 KiB
Python

"""
Unit tests for yaml.
"""
import os
import tempfile
import pytest
import networkx as nx
from networkx.testing import assert_edges_equal, assert_nodes_equal
class TestYaml(object):
@classmethod
def setup_class(cls):
cls.build_graphs()
@classmethod
def build_graphs(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.MG = nx.MultiGraph()
cls.MG.add_weighted_edges_from([(1, 2, 5), (1, 2, 5), (1, 2, 1), (3, 3, 42)])
def assert_equal(self, G, data=False):
(fd, fname) = tempfile.mkstemp()
nx.write_yaml(G, fname)
Gin = nx.read_yaml(fname)
assert_nodes_equal(list(G), list(Gin))
assert_edges_equal(G.edges(data=data), Gin.edges(data=data))
os.close(fd)
os.unlink(fname)
def testUndirected(self):
self.assert_equal(self.G, data=False)
def testDirected(self):
self.assert_equal(self.DG, data=False)
def testMultiGraph(self):
self.assert_equal(self.MG, data=True)
# fixture for pytest tests
def setup_module(module):
import pytest
yaml = pytest.importorskip("yaml")