def test_nodes_at_link():
"""Test getting nodes at links from a voronoi."""
converter = VoronoiConverter(Voronoi(POINTS))
nodes_at_link = converter.get_nodes_at_link()
assert nodes_at_link.shape == (11, 2)
assert np.all(nodes_at_link >= 0)
assert np.all(nodes_at_link < 10)
assert_array_equal(np.unique(nodes_at_link), [0, 1, 2, 3, 4, 5, 6, 7, 8, 9])
