def test_should_both_wipe_and_top_up_if_collateralization_too_low(
self, deployment: Deployment):
# given
self.open_cdp(deployment, eth_amount=40, sai_amount=5000)
self.sai_balance(deployment, balance=3500)
# and
keeper = CdpKeeper(args=args(
f"--eth-from {deployment.web3.eth.defaultAccount} "
f"--tub-address {deployment.tub.address} "
f"--min-margin 0.2 --top-up-margin 0.45 --max-sai 3000 --avg-sai 2000"
),
web3=deployment.web3)
keeper.approve()
# when
self.set_price(deployment, 276)
# and
keeper.check_all_cups()
# then
assert deployment.tub.ink(1) == Wad.from_number(40)
assert deployment.tub.tab(1) == Wad.from_number(5000)
assert deployment.sai.balance_of(
deployment.our_address) == Wad.from_number(3500)
# when
self.set_price(deployment, 120)
# and
keeper.check_all_cups()
# then
assert deployment.tub.ink(1) == Wad(71458333333333333000)
assert deployment.tub.tab(1) == Wad.from_number(3500)
assert deployment.sai.balance_of(
deployment.our_address) == Wad.from_number(2000)
def test_should_not_start_without_eth_from_argument(
self, deployment: Deployment):
# when
with captured_output() as (out, err):
with pytest.raises(SystemExit):
CdpKeeper(args=args(f""), web3=deployment.web3)
# then
assert "error: the following arguments are required: --eth-from" in err.getvalue(
)
def test_should_not_start_without_tub_address_argument(
self, deployment: Deployment):
# when
with captured_output() as (out, err):
with pytest.raises(SystemExit):
CdpKeeper(args=args(
f"--eth-from {deployment.web3.eth.defaultAccount}"),
web3=deployment.web3)
# then
assert "error: the following arguments are required: --tub-address" in err.getvalue(
)
def test_should_not_crash_on_empty_cdps(self, deployment: Deployment):
# given
deployment.tub.open().transact()
# and
keeper = CdpKeeper(args=args(
f"--eth-from {deployment.web3.eth.defaultAccount} "
f"--tub-address {deployment.tub.address} "
f"--min-margin 0.2 --top-up-margin 0.45 --max-sai 3000 --avg-sai 2000"
),
web3=deployment.web3)
keeper.approve()
# when
self.set_price(deployment, 276)
# and
keeper.check_all_cups()