modelcreator_ecg_decomposition_test.py 文件源码

def test_can_handle_request_whose_edge_demand_exceeds_all_substrate_capacities(self):
        self.request.edge[("m", "p")]["demand"] = 10 ** 10
        scenario = datamodel.Scenario("test_scenario", self.substrate, [self.request],
                                      objective=datamodel.Objective.MAX_PROFIT)
        mc_ecg = modelcreator_ecg_decomposition.ModelCreatorCactusDecomposition(scenario)
        mc_ecg.init_model_creator()
        sol = mc_ecg.compute_fractional_solution()
        assert mc_ecg.model.getAttr(GRB.Attr.ObjVal) == pytest.approx(1000.0)  # Can be solved by colocation

        # forbid colocation => should become infeasible
        self.request.set_allowed_nodes("m", {"u"})
        self.request.set_allowed_nodes("p", {"v"})
        mc_ecg = modelcreator_ecg_decomposition.ModelCreatorCactusDecomposition(scenario)
        mc_ecg.init_model_creator()
        sol = mc_ecg.compute_fractional_solution()
        assert mc_ecg.model.getAttr(GRB.Attr.ObjVal) == pytest.approx(0.0)  # Cannot be solved by colocation