def METHOD_NAME(self):
    inp_file = join(netdir, "Net1.inp")
    wn = wntr.network.WaterNetworkModel(inp_file)
    G = wn.to_graph()
    bridges = wntr.metrics.bridges(G)
    expected = set(["9", "10", "110"])
    self.assertSetEqual(set(bridges), expected)