def test_reserve_maximum(self):
        man = TopologyManager(CONFIG_FILE)
        topo = man.get_topology()

        # Get a path
        path = nx.shortest_path(topo, source="atl-switch", target="mia-switch")

        man.reserve_bw_on_path(path, 80000000000)
    def test_unreserve_too_much(self):
        man = TopologyManager(CONFIG_FILE)
        topo = man.get_topology()

        # Get a path
        path = nx.shortest_path(topo, source="atl-switch", target="mia-switch")

        man.reserve_bw_on_path(path, 100)
        man.unreserve_bw_on_path(path, 100)

        self.failUnlessRaises(Exception, man.unreserve_bw_on_path, path, 100)

        man.reserve_bw_on_path(path, 100)
        self.failUnlessRaises(Exception, man.unreserve_bw_on_path, path, 200)