def test_is_link():
"""Test if a ridge is a link."""
v = Voronoi(POINTS)
converter = VoronoiConverter(v)
links = [converter.is_link(r) for r in range(len(v.ridge_vertices))]
assert sum(links) == 11
def test_is_link():
"""Test if a ridge is a link."""
v = Voronoi(POINTS)
converter = VoronoiConverter(v)
links = [converter.is_link(r) for r in range(len(v.ridge_vertices))]
assert_equal(sum(links), 11)
