def test_flash_proxy_liquidate_and_settle_auction(self, c: Collateral,
web3, geb, auction_id,
other_address):
# given
collateral_auction_house = self.collateral.collateral_auction_house
if not isinstance(collateral_auction_house,
FixedDiscountCollateralAuctionHouse):
return
set_collateral_price(geb, c, Wad.from_number(100))
eth_before = self.web3.eth.getBalance(self.keeper_address.address)
auctions_started = collateral_auction_house.auctions_started()
# when
critical_safe = create_critical_safe(geb, c, bid_size, other_address)
self.keeper.check_safes()
wait_for_other_threads()
assert self.web3.eth.getBalance(
self.keeper_address.address) > eth_before
assert collateral_auction_house.auctions_started(
) == auctions_started + 1
auction_status = collateral_auction_house.bids(auctions_started + 1)
assert auction_status.raised_amount == Rad(0)
assert auction_status.sold_amount == Wad(0)
assert auction_status.amount_to_raise == Rad(0)
assert auction_status.amount_to_sell == Wad(0)
assert auction_status.auction_deadline == 0
assert auction_status.raised_amount == Rad(0)
def auction_id(web3: Web3, geb: GfDeployment, auction_income_recipient_address,
other_address) -> int:
total_surplus = geb.safe_engine.coin_balance(geb.accounting_engine.address)
unqueued_unauctioned_debt = (
geb.safe_engine.debt_balance(geb.accounting_engine.address) -
geb.accounting_engine.total_queued_debt()
) - geb.accounting_engine.total_on_auction_debt()
print(
f'total_surplus={str(total_surplus)[:6]}, unqueued_unauctioned_debt={str(unqueued_unauctioned_debt)[:6]}'
)
if unqueued_unauctioned_debt < total_surplus or (
unqueued_unauctioned_debt == Rad(0) and total_surplus == Rad(0)):
# Liquidate SAFE
c = geb.collaterals['ETH-B']
critical_safe = create_critical_safe(geb,
c,
Wad.from_number(2),
other_address,
draw_system_coin=False)
collateral_auction_id = liquidate(geb, c, critical_safe)
# Generate some system coin, bid on and win the collateral auction without covering all the debt
reserve_system_coin(geb,
c,
auction_income_recipient_address,
Wad.from_number(100),
extra_collateral=Wad.from_number(1.1))
c.collateral_auction_house.approve(
geb.safe_engine.address,
approval_function=approve_safe_modification_directly(
from_address=auction_income_recipient_address))
current_bid = c.collateral_auction_house.bids(collateral_auction_id)
bid_amount = Rad.from_number(1.9)
assert geb.safe_engine.coin_balance(
auction_income_recipient_address) > bid_amount
#assert c.collateral_auction_house.increase_bid_size(collateral_auction_id, current_bid.amount_to_sell, bid_amount).transact(from_address=auction_income_recipient_address)
#time_travel_by(web3, c.collateral_auction_house.bid_duration()+1)
#assert c.collateral_auction_house.settle_auction(collateral_auction_id).transact()
pop_debt_and_settle_debt(web3,
geb,
past_blocks=1200,
cancel_auctioned_debt=False)
# Start the debt auction
unqueued_unauctioned_debt = (
geb.safe_engine.debt_balance(geb.accounting_engine.address) -
geb.accounting_engine.total_queued_debt()
) - geb.accounting_engine.total_on_auction_debt()
assert geb.accounting_engine.debt_auction_bid_size(
) <= unqueued_unauctioned_debt
assert geb.safe_engine.coin_balance(
geb.accounting_engine.address) == Rad(0)
assert geb.accounting_engine.auction_debt().transact(
from_address=auction_income_recipient_address)
return geb.debt_auction_house.auctions_started()
def auction_id(geb, c: Collateral, auction_income_recipient_address) -> int:
# set to pymaker price
set_collateral_price(geb, c, Wad.from_number(500))
# Ensure we start with a clean safe
safe = geb.safe_engine.safe(c.collateral_type, auction_income_recipient_address)
assert safe.locked_collateral == Wad(0)
assert safe.generated_debt == Wad(0)
# liquidate SAFE
critical_safe = create_critical_safe(geb, c, bid_size, auction_income_recipient_address)
return liquidate(geb, c, critical_safe)
def test_should_detect_debt_auction(self, web3, c, geb, other_address,
keeper_address):
# given a count of debt auctions
reserve_system_coin(geb, c, keeper_address, Wad.from_number(230))
auctions_started = geb.debt_auction_house.auctions_started()
# and an undercollateralized SAFE is liquidated
critical_safe = create_critical_safe(geb,
c,
Wad.from_number(1),
other_address,
draw_system_coin=False)
assert geb.liquidation_engine.liquidate_safe(
critical_safe.collateral_type, critical_safe).transact()
# when the auction ends without debt being covered
if isinstance(c.collateral_auction_house,
EnglishCollateralAuctionHouse):
time_travel_by(
web3,
c.collateral_auction_house.total_auction_length() + 1)
# then ensure testchain is in the appropriate state
total_surplus = geb.safe_engine.coin_balance(
geb.accounting_engine.address)
total_debt = geb.safe_engine.debt_balance(
geb.accounting_engine.address)
unqueued_unauctioned_debt = (
geb.safe_engine.debt_balance(geb.accounting_engine.address) -
geb.accounting_engine.total_queued_debt()
) - geb.accounting_engine.total_on_auction_debt()
debt_queue = geb.accounting_engine.total_queued_debt()
debt_auction_bid_size = geb.accounting_engine.debt_auction_bid_size()
wait = geb.accounting_engine.pop_debt_delay()
assert total_surplus < total_debt
assert unqueued_unauctioned_debt + debt_queue >= debt_auction_bid_size
assert wait == 0
# when
self.keeper.check_debt()
wait_for_other_threads()
# then ensure another debt auction was started
auction_id = geb.debt_auction_house.auctions_started()
assert auction_id == auctions_started + 1
# clean up by letting someone else bid and waiting until the auction ends
self.decrease_sold_amount(auction_id, self.other_address,
Wad.from_number(0.000012),
self.debt_auction_bid_size)
time_travel_by(web3, geb.debt_auction_house.bid_duration() + 1)
def test_liquidation_and_collateral_auction(
self, web3, geb, auction_income_recipient_address, keeper_address):
# given
c = geb.collaterals['ETH-A']
set_collateral_price(geb, c, Wad.from_number(500))
keeper = AuctionKeeper(args=args(
f"--eth-from {keeper_address} "
f"--type collateral "
f"--from-block 1 "
f"--collateral-type {c.collateral_type.name} "
f"--model ./bogus-model.sh"),
web3=geb.web3)
keeper.approve()
unsafe_safe = create_critical_safe(geb, c, Wad.from_number(1.2),
auction_income_recipient_address)
assert len(geb.active_auctions()["collateral_auctions"][
c.collateral_type.name]) == 0
# Keeper won't bid with a 0 system coin balance
purchase_system_coin(Wad.from_number(20), keeper_address)
assert geb.system_coin_adapter.join(
keeper_address,
Wad.from_number(20)).transact(from_address=keeper_address)
# when
keeper.check_safes()
wait_for_other_threads()
# then
assert len(geb.liquidation_engine.past_liquidations(10)) > 0
safe = geb.safe_engine.safe(unsafe_safe.collateral_type,
unsafe_safe.address)
assert safe.generated_debt == Wad(0) # unsafe safe has been liquidated
assert safe.locked_collateral == Wad(0) # unsafe safe is now safe ...
assert c.collateral_auction_house.auctions_started(
) == 1 # One auction started
def auction_small(geb, c: Collateral, auction_income_recipient_address) -> int:
critical_safe = create_critical_safe(geb, c, bid_size_small,
auction_income_recipient_address)
return liquidate(geb, c, critical_safe)