def network(self):
     return Network.get_by_chain_id(self.chain_id)
 def test_get_network_by_chain_id(self):
     for name, cid in CHAIN_ID_MAPPING.items():
         network = Network.get_by_chain_id(cid)
         self.assertEqual(network.name, name)
         self.assertEqual(network.chain_id, cid)