def test_is_triad():
"""Tests the is_triad function"""
G = nx.karate_club_graph()
G = G.to_directed()
for i in range(100):
nodes = sample(G.nodes(), 3)
G2 = G.subgraph(nodes)
assert nx.is_triad(G2)
def test_random_triad():
"""Tests the random_triad function"""
G = nx.karate_club_graph()
G = G.to_directed()
for i in range(100):
assert nx.is_triad(nx.random_triad(G))