def testLevels(self):
gr = DirectedGraph()
gr.add_nodes([1, 2, 3, 11, 12, 21, 22, 23, 31])
gr.add_edge(11, 1)
gr.add_edge(12, 2)
gr.add_edge(21, 12)
gr.add_edge(22, 11)
gr.add_edge(31, 21)
gr.add_edge(31, 22)
gr.add_edge(31, 23)
self.assertEqual(set([1, 2, 3, 23]), gr.get_levels()[0])
self.assertEqual(set([11, 12]), gr.get_levels()[1])
self.assertEqual(set([22, 21]), gr.get_levels()[2])
self.assertEqual(set([31]), gr.get_levels()[3])
# cycles no
self.assertEqual([], gr.get_cycles())
self.assertEqual(set([1, 2, 11, 12, 21, 22, 23]), gr.compute_closure(31))
self.assertEqual(set([]), gr.compute_closure(23))
self.assertEqual(set([1, 11]), gr.compute_closure(22))
self.assertEqual(set([2, 12]), gr.compute_closure(21))
self.assertEqual(set([1]), gr.compute_closure(11))
def testLevels(self):
gr = DirectedGraph()
gr.add_nodes([1, 2, 3, 11, 12, 21, 22, 23, 31])
gr.add_edge(11, 1)
gr.add_edge(12, 2)
gr.add_edge(21, 12)
gr.add_edge(22, 11)
gr.add_edge(31, 21)
gr.add_edge(31, 22)
gr.add_edge(31, 23)
self.assertEqual(set([1, 2, 3, 23]), gr.get_levels()[0])
self.assertEqual(set([11, 12]), gr.get_levels()[1])
self.assertEqual(set([22, 21]), gr.get_levels()[2])
self.assertEqual(set([31]), gr.get_levels()[3])
# cycles no
self.assertEqual([], gr.get_cycles())
self.assertEqual(set([1, 2, 11, 12, 21, 22, 23]),
gr.compute_closure(31))
self.assertEqual(set([]), gr.compute_closure(23))
self.assertEqual(set([1, 11]), gr.compute_closure(22))
self.assertEqual(set([2, 12]), gr.compute_closure(21))
self.assertEqual(set([1]), gr.compute_closure(11))
def testCycles(self):
gr = DirectedGraph()
gr.add_nodes([1, 2, 3, 11, 12, 21, 22, 23, 31])
self.assertEqual([], gr.get_cycles())
gr.add_edge(1, 2)
gr.add_edge(2, 3)
gr.add_edge(3, 1)
self.assertEqual([1, 2, 3], gr.get_cycles())
def testCycles(self):
gr = DirectedGraph()
gr.add_nodes([1, 2, 3, 11, 12, 21, 22, 23, 31])
self.assertEqual([], gr.get_cycles())
gr.add_edge(1, 2)
gr.add_edge(2, 3)
gr.add_edge(3, 1)
self.assertEqual([1, 2, 3], gr.get_cycles())
def test_serialize(self):
gr = DirectedGraph()
gr.add_nodes([1, 2, 3, 11, 12, 21, 22, 23, 31])
gr.add_edge(11, 1)
gr.add_edge(12, 2)
gr.add_edge(21, 12)
gr.add_edge(22, 11)
gr.add_edge(31, 21)
gr.add_edge(31, 22)
gr.add_edge(31, 23)
s = gr.serialize()
gr2 = DirectedGraphDeserializer(int).deserialize(s)
self.assertEquals(gr, gr2)
def test_closures(self):
gr = DirectedGraph()
gr.add_nodes([1, 2, 3, 11, 12, 21, 22, 23, 31])
gr.add_edge(11, 1)
gr.add_edge(12, 2)
gr.add_edge(21, 12)
gr.add_edge(22, 11)
gr.add_edge(31, 21)
gr.add_edge(31, 22)
gr.add_edge(31, 23)
self.assertEqual({21, 12, 2, 22, 11, 1, 23}, set(gr.compute_closure(31)))
# Inverse closure
self.assertEqual({31}, gr.inverse_reachable_subgraph(31).nodes)
self.assertEqual({11, 22, 31, 1}, gr.inverse_reachable_subgraph(1).nodes)
def test_get_paths(self):
gr = DirectedGraph()
gr.add_nodes([1, 2, 11, 12, 21, 22, 31])
gr.add_edge(11, 1)
gr.add_edge(12, 2)
gr.add_edge(21, 12)
gr.add_edge(22, 11)
gr.add_edge(22, 12)
gr.add_edge(31, 21)
gr.add_edge(31, 22)
paths = gr.get_paths(2)
self.assertEqual(len(paths), 2)
self.assertIn([31, 21, 12, 2], paths)
self.assertIn([31, 22, 12, 2], paths)
self.assertEqual([[31]], gr.get_paths(31))
def test_closures(self):
gr = DirectedGraph()
gr.add_nodes([1, 2, 3, 11, 12, 21, 22, 23, 31])
gr.add_edge(11, 1)
gr.add_edge(12, 2)
gr.add_edge(21, 12)
gr.add_edge(22, 11)
gr.add_edge(31, 21)
gr.add_edge(31, 22)
gr.add_edge(31, 23)
self.assertEqual({21, 12, 2, 22, 11, 1, 23},
set(gr.compute_closure(31)))
# Inverse closure
self.assertEqual({31}, gr.inverse_reachable_subgraph(31).nodes)
self.assertEqual({11, 22, 31, 1},
gr.inverse_reachable_subgraph(1).nodes)
def test_get_paths(self):
gr = DirectedGraph()
gr.add_nodes([1, 2, 11, 12, 21, 22, 31])
gr.add_edge(11, 1)
gr.add_edge(12, 2)
gr.add_edge(21, 12)
gr.add_edge(22, 11)
gr.add_edge(22, 12)
gr.add_edge(31, 21)
gr.add_edge(31, 22)
paths = gr.get_paths(2)
self.assertEqual(len(paths), 2)
self.assertIn([31, 21, 12, 2], paths)
self.assertIn([31, 22, 12, 2], paths)
self.assertEqual([[31]], gr.get_paths(31))