'Tests that the Voronoi cells for a multigraph are the same as
for a simple graph.'

def test_multigraph_unweighted(self):

    edges = [(0, 1), (1, 2), (2, 3)]
    G = nx.MultiGraph((2 * edges))
    H = nx.Graph(G)
    G_cells = nx.voronoi_cells(G, {0, 3})
    H_cells = nx.voronoi_cells(H, {0, 3})
    assert_equal(G_cells, H_cells)
