def tend(flapper: Flapper, id: int, address: Address, lot: Rad, bid: Wad):
assert (isinstance(flapper, Flapper))
assert (isinstance(id, int))
assert (isinstance(lot, Rad))
assert (isinstance(bid, Wad))
assert flapper.live() == 1
current_bid = flapper.bids(id)
assert current_bid.guy != Address(
"0x0000000000000000000000000000000000000000")
assert current_bid.tic > datetime.now().timestamp(
) or current_bid.tic == 0
assert current_bid.end > datetime.now().timestamp()
assert lot == current_bid.lot
assert bid > current_bid.bid
assert bid >= flapper.beg() * current_bid.bid
assert flapper.tend(id, lot, bid).transact(from_address=address)
log = flapper.past_logs(1)[0]
assert isinstance(log, Flapper.TendLog)
assert log.guy == address
assert log.id == id
assert log.lot == lot
assert log.bid == bid
def last_log(flapper: Flapper):
current_block = flapper.web3.eth.blockNumber
return flapper.past_logs(current_block - 1, current_block)[0]
