def test_euler_path_incomplete(self):
fLOG(
__file__,
self._testMethodName,
OutputPrint=__name__ == "__main__")
edges_index = [0, 4994, 11394, 9989, 1670, 11274, 17680, 3353, 9118, 30370, 15023,
6712, 8378, 29114, 4553, 1101, 6488, 107, 1003, 12783, 2418, 2803, 2808, 6265]
solution = [0, 4994, 11394, 9989, 1670, 11274, 17680, 3353, 9118, 30370, 15023, 6712, 8378, 29114, 4553,
1101, 6488, 107, 1003, 12783, 2418, 2803, 2808, 6265, 17680, 30370, 12783, 0, 3353, 9118, 8378, 15023]
edges = [(10, 7), (5, 4), (4, 0), (10, 11), (9, 10), (7, 2), (17, 16), (5, 1), (11, 5), (17, 13), (16, 15), (14, 4),
(15, 11), (1, 0), (4, 6), (8, 9), (13, 9), (7, 5), (11, 14), (16, 10), (2, 1), (12, 8), (9, 3), (12, 13)]
asso = {edges_index[i]: edges[i] for i in range(len(edges_index))}
for i in range(0, 20):
path = euler_path(edges_index, edges, solution)
assert len(path) > 0
self.assertEqual(list(sorted(path)), list(sorted(solution)))
for i in range(1, len(path)):
ed = path[i - 1:i + 1]
e1 = asso[ed[0]]
e2 = asso[ed[1]]
con = 0
if e1[0] in e2 or e1[1] in e2:
con += 1
if e2[0] in e1 or e2[1] in e1:
con += 1
if con == 0:
raise Exception(
"inonsistency:\npath={0}\ned={1}\ne1={2}, e2={3}".format(path, ed, e1, e2))
def test_eulerian(self):
fLOG(
__file__,
self._testMethodName,
OutputPrint=__name__ == "__main__")
edges_index = [1, 2, 3, 4]
edges = [[0, 1], [1, 2], [2, 3], [3, 0]]
distances = [1, 1, 1, 1]
solution = [1, 2, 3, 4]
d = distance_solution(edges_index, edges, distances, solution)
path = euler_path(edges_index, edges, solution)
self.assertEqual(len(path), d)
self.assertEqual(list(sorted((path))), [1, 2, 3, 4])
def test_eulerian2(self):
fLOG(
__file__,
self._testMethodName,
OutputPrint=__name__ == "__main__")
edges_index = [1, 2, 3, 4, 5, 6]
edges = [[0, 1], [1, 2], [2, 3], [3, 0],
[0, 5], [5, 1], [2, 6], [3, 6]]
distances = [1, 1, 1, 1, 1, 1]
solution = [1, 2, 3, 4, 5, 6, 1, 2]
try:
distance_solution(edges_index, edges, distances, solution)
except SolutionException as e:
if "Some vertices have an odd degree" not in str(e):
raise e
solution = [1, 2, 3, 4, 5, 6, 1, 2, 2]
d = distance_solution(edges_index, edges, distances, solution)
path = euler_path(edges_index, edges, solution)
self.assertEqual(len(path), d)
self.assertEqual(list(sorted(path)), [1, 1, 2, 2, 2, 3, 4, 5, 6])
