def test_events_for_close_hold_for_unpaid_payee():
""" If the secret is known but the payee transfer has not being paid the
node must not settle on-chain, otherwise the payee can burn tokens to
induce the mediator to close a channel.
"""
transfers_pair = make_transfers_pair(
factories.HOP1,
[factories.HOP2, factories.HOP3],
factories.HOP6,
amount=10,
secret=factories.UNIT_SECRET,
)
pair = transfers_pair[0]
# preconditions
assert pair.payer_transfer.secret == factories.UNIT_SECRET
assert pair.payee_transfer.secret == factories.UNIT_SECRET
assert pair.payee_state not in mediator.STATE_TRANSFER_PAID
# do not generate events if the secret is known AND the payee is not paid
first_unsafe_block = pair.payer_transfer.expiration - pair.payer_route.reveal_timeout
events = mediator.events_for_close(
transfers_pair,
first_unsafe_block,
)
assert len(events) == 0
assert pair.payee_state not in mediator.STATE_TRANSFER_PAID
assert pair.payer_state not in mediator.STATE_TRANSFER_PAID
payer_expiration_block = pair.payer_transfer.expiration
events = mediator.events_for_close(
transfers_pair,
payer_expiration_block,
)
assert len(events) == 0
assert pair.payee_state not in mediator.STATE_TRANSFER_PAID
assert pair.payer_state not in mediator.STATE_TRANSFER_PAID
payer_expiration_block = pair.payer_transfer.expiration
events = mediator.events_for_close(
transfers_pair,
payer_expiration_block + 1,
)
assert len(events) == 0
assert pair.payee_state not in mediator.STATE_TRANSFER_PAID
assert pair.payer_state not in mediator.STATE_TRANSFER_PAID
def test_events_for_close_hold_for_unpaid_payee():
""" If the secret is known but the payee transfer has not being paid the
node must not settle on-chain, otherwise the payee can burn tokens to
induce the mediator to close a channel.
"""
transfers_pair = make_transfers_pair(
factories.HOP1,
[factories.HOP2, factories.HOP3],
factories.HOP6,
amount=10,
secret=factories.UNIT_SECRET,
)
pair = transfers_pair[0]
# preconditions
assert pair.payer_transfer.secret == factories.UNIT_SECRET
assert pair.payee_transfer.secret == factories.UNIT_SECRET
assert pair.payee_state not in mediator.STATE_TRANSFER_PAID
# do not generate events if the secret is known AND the payee is not paid
first_unsafe_block = pair.payer_transfer.expiration - pair.payer_route.reveal_timeout
events = mediator.events_for_close(
transfers_pair,
first_unsafe_block,
)
assert len(events) == 0
assert pair.payee_state not in mediator.STATE_TRANSFER_PAID
assert pair.payer_state not in mediator.STATE_TRANSFER_PAID
payer_expiration_block = pair.payer_transfer.expiration
events = mediator.events_for_close(
transfers_pair,
payer_expiration_block,
)
assert len(events) == 0
assert pair.payee_state not in mediator.STATE_TRANSFER_PAID
assert pair.payer_state not in mediator.STATE_TRANSFER_PAID
payer_expiration_block = pair.payer_transfer.expiration
events = mediator.events_for_close(
transfers_pair,
payer_expiration_block + 1,
)
assert len(events) == 0
assert pair.payee_state not in mediator.STATE_TRANSFER_PAID
assert pair.payer_state not in mediator.STATE_TRANSFER_PAID
def test_events_for_close():
""" The node must close to unlock on-chain if the payee was paid. """
for payee_state in ('payee_balance_proof', 'payee_contract_withdraw'):
transfers_pair = make_transfers_pair(
factories.HOP1,
[factories.HOP2, factories.HOP3],
factories.HOP6,
amount=10,
secret=factories.UNIT_SECRET,
)
pair = transfers_pair[0]
pair.payee_state = payee_state
block_number = (
pair.payer_transfer.expiration - pair.payer_route.reveal_timeout
)
events = mediator.events_for_close(
transfers_pair,
block_number,
)
assert isinstance(events[0], ContractSendChannelClose)
assert events[0].channel_address == pair.payer_route.channel_address
assert pair.payer_state == 'payer_waiting_close'
def test_events_for_close():
""" The node must close to unlock on-chain if the payee was paid. """
for payee_state in ('payee_balance_proof', 'payee_contract_withdraw'):
transfers_pair = make_transfers_pair(
[factories.HOP1, factories.HOP2],
factories.HOP6,
amount=10,
secret=factories.UNIT_SECRET,
)
pair = transfers_pair[0]
pair.payee_state = payee_state
block_number = (
pair.payer_transfer.expiration - pair.payer_route.reveal_timeout
)
events = mediator.events_for_close(
transfers_pair,
block_number,
)
assert isinstance(events[0], ContractSendChannelClose)
assert events[0].channel_address == pair.payer_route.channel_address
assert pair.payer_state == 'payer_waiting_close'
