'Edge flow betweenness centrality: K4'

def test_K4(self):

    G = nx.complete_graph(4)
    b = edge_current_flow(G, normalized=True)
    b_answer = dict.fromkeys(G.edges(), 0.25)
    for ((s, t), v1) in b_answer.items():
        v2 = b.get((s, t), b.get((t, s)))
        assert_almost_equal(v1, v2)
