def test_neg_four(self):
clusters = [(1,2), (2, 3), (3,4), (4,5), (5,6)]
g = construct(clusters)
self.assertFalse(check_problematic_row(g))
def test_one(self):
clusters = [(1,2), (2,3), (1,3)]
g = construct(clusters)
self.assertTrue(check_problematic_row(g))
def test_neg_two(self):
clusters = [(1,2), (3,4)]
g = construct(clusters)
self.assertFalse(check_problematic_row(g))
def test_empty_graph(self):
g = nx.DiGraph()
self.assertFalse(check_problematic_row(g))
