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# vim:ts=4 sw=4 sts=4:
import unittest
from igraph import Graph
class GraphAdjacencyMatrixLikeIndexingTests(unittest.TestCase):
def testSingleEdgeRetrieval(self):
g = Graph.Famous("krackhardt_kite")
for v1, v2 in g.get_edgelist():
self.assertEqual(g[v1, v2], 1)
self.assertEqual(g[v2, v1], 1)
for v1 in range(g.vcount()):
for v2 in set(range(g.vcount())) - set(g.neighbors(v1)):
self.assertEqual(g[v1, v2], 0)
self.assertEqual(g[v2, v1], 0)
g.add_edge(1, 1)
self.assertEqual(g[1, 1], 1)
def testSingleEdgeRetrievalWeights(self):
g = Graph.Famous("krackhardt_kite")
g.es["weight"] = list(range(g.ecount()))
for idx, (v1, v2) in enumerate(g.get_edgelist()):
self.assertEqual(g[v1, v2], idx)
self.assertEqual(g[v2, v1], idx)
for v1 in range(g.vcount()):
for v2 in set(range(g.vcount())) - set(g.neighbors(v1)):
self.assertEqual(g[v1, v2], 0)
self.assertEqual(g[v2, v1], 0)
def testSingleEdgeRetrievalAttrName(self):
g = Graph.Famous("krackhardt_kite")
g.es["value"] = list(range(20, g.ecount() + 20))
for idx, (v1, v2) in enumerate(g.get_edgelist()):
self.assertEqual(g[v1, v2, "value"], idx + 20)
self.assertEqual(g[v2, v1, "value"], idx + 20)
for v1 in range(g.vcount()):
for v2 in set(range(g.vcount())) - set(g.neighbors(v1)):
self.assertEqual(g[v1, v2, "value"], 0)
self.assertEqual(g[v2, v1, "value"], 0)
def suite():
adjacency_suite = unittest.defaultTestLoader.loadTestsFromTestCase(
GraphAdjacencyMatrixLikeIndexingTests
)
return unittest.TestSuite([adjacency_suite])
def test():
runner = unittest.TextTestRunner()
runner.run(suite())
if __name__ == "__main__":
test()
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