### view env/lib/python3.9/site-packages/networkx/algorithms/tests/test_distance_regular.py @ 0:4f3585e2f14bdraftdefaulttip

"planemo upload commit 60cee0fc7c0cda8592644e1aad72851dec82c959"
author shellac Mon, 22 Mar 2021 18:12:50 +0000
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```
import networkx as nx
from networkx import is_strongly_regular

class TestDistanceRegular:
def test_is_distance_regular(self):
assert nx.is_distance_regular(nx.icosahedral_graph())
assert nx.is_distance_regular(nx.petersen_graph())
assert nx.is_distance_regular(nx.cubical_graph())
assert nx.is_distance_regular(nx.complete_bipartite_graph(3, 3))
assert nx.is_distance_regular(nx.tetrahedral_graph())
assert nx.is_distance_regular(nx.dodecahedral_graph())
assert nx.is_distance_regular(nx.pappus_graph())
assert nx.is_distance_regular(nx.heawood_graph())
assert nx.is_distance_regular(nx.cycle_graph(3))
# no distance regular
assert not nx.is_distance_regular(nx.path_graph(4))

def test_not_connected(self):
G = nx.cycle_graph(4)
nx.add_cycle(G, [5, 6, 7])
assert not nx.is_distance_regular(G)

def test_global_parameters(self):
b, c = nx.intersection_array(nx.cycle_graph(5))
g = nx.global_parameters(b, c)
assert list(g) == [(0, 0, 2), (1, 0, 1), (1, 1, 0)]
b, c = nx.intersection_array(nx.cycle_graph(3))
g = nx.global_parameters(b, c)
assert list(g) == [(0, 0, 2), (1, 1, 0)]

def test_intersection_array(self):
b, c = nx.intersection_array(nx.cycle_graph(5))
assert b == [2, 1]
assert c == [1, 1]
b, c = nx.intersection_array(nx.dodecahedral_graph())
assert b == [3, 2, 1, 1, 1]
assert c == [1, 1, 1, 2, 3]
b, c = nx.intersection_array(nx.icosahedral_graph())
assert b == [5, 2, 1]
assert c == [1, 2, 5]

class TestStronglyRegular:
"""Unit tests for the :func:`~networkx.is_strongly_regular`
function.

"""

def test_cycle_graph(self):
"""Tests that the cycle graph on five vertices is strongly
regular.

"""
G = nx.cycle_graph(5)
assert is_strongly_regular(G)

def test_petersen_graph(self):
"""Tests that the Petersen graph is strongly regular."""
G = nx.petersen_graph()
assert is_strongly_regular(G)

def test_path_graph(self):
"""Tests that the path graph is not strongly regular."""
G = nx.path_graph(4)
assert not is_strongly_regular(G)
```