def test_find_refund_reference_event():
# None for no transaction given
assert txnmetadata.find_refund_reference_event(None, None) is None
receiver = utils.account_address("f72589b71ff4f8d139674a3f7369c69b")
txn = jsonrpc.Transaction()
txn.events.add(data=jsonrpc.EventData(type="unknown", receiver="f72589b71ff4f8d139674a3f7369c69b"))
txn.events.add(data=jsonrpc.EventData(type="receivedpayment", receiver="unknown"))
# None for not found
event = txnmetadata.find_refund_reference_event(txn, receiver)
assert event is None
txn.events.add(data=jsonrpc.EventData(type="receivedpayment", receiver="f72589b71ff4f8d139674a3f7369c69b"))
event = txnmetadata.find_refund_reference_event(txn, receiver)
assert event is not None
assert event.data.type == "receivedpayment"
assert event.data.receiver == "f72589b71ff4f8d139674a3f7369c69b"
def test_refund_transaction_of_custodial_to_custodial_under_threshold():
client = testnet.create_client()
faucet = testnet.Faucet(client)
sender_custodial = CustodialApp.create(faucet.gen_account(), client)
receiver_custodial = CustodialApp.create(faucet.gen_account(), client)
# create a payment transaction
intent_id = receiver_custodial.payment(user_id=0, amount=1_000_000)
intent = identifier.decode_intent(intent_id, identifier.TDM)
receiver_address = utils.account_address(intent.account_address)
script = stdlib.encode_peer_to_peer_with_metadata_script(
currency=utils.currency_code(intent.currency_code),
payee=receiver_address,
amount=intent.amount,
metadata=txnmetadata.general_metadata(
sender_custodial.find_user_sub_address_by_id(0),
intent.sub_address),
metadata_signature=b"", # only travel rule metadata requires signature
)
sender = sender_custodial.available_child_vasp()
txn = sender_custodial.create_transaction(sender, script,
intent.currency_code)
signed_txn = sender.sign(txn)
client.submit(signed_txn)
executed_txn = client.wait_for_transaction(signed_txn)
# start to refund the transaction
# find the event for the receiver, a p2p transaction may contains multiple receivers
# in the future.
event = txnmetadata.find_refund_reference_event(executed_txn,
receiver_address)
assert event is not None
amount = event.data.amount.amount
currency_code = event.data.amount.currency
refund_receiver_address = utils.account_address(event.data.sender)
metadata = txnmetadata.refund_metadata_from_event(event)
refund_txn_script = stdlib.encode_peer_to_peer_with_metadata_script(
currency=utils.currency_code(currency_code),
payee=refund_receiver_address,
amount=amount,
metadata=metadata,
metadata_signature=b"", # only travel rule metadata requires signature
)
# receiver is sender of refund txn
sender = receiver_custodial.available_child_vasp()
txn = receiver_custodial.create_transaction(sender, refund_txn_script,
currency_code)
refund_executed_txn = receiver_custodial.submit_and_wait(sender.sign(txn))
assert refund_executed_txn is not None