async def test_set_signer_invalid_nonce(contract_factory):
"""Should fail to update the signer with a bad nonce"""
_, contract = contract_factory
nonce = 666
message_hash = pedersen_hash(
nonce, pedersen_hash(some_vehicle, pedersen_hash(some_other_signer,
0)))
sig_r, sig_s = sign(msg_hash=message_hash, priv_key=some_owner_secret)
with pytest.raises(StarkException):
await contract.set_signer(
vehicle_id=some_vehicle,
nonce=nonce,
signer_public_key=some_other_signer,
).invoke(signature=[sig_r, sig_s])
async def test_attest_state(contract_factory):
"""Should successfully attest to a state hash & increment nonce"""
_, contract = contract_factory
state_hash = 1234
nonce = 0
message_hash = pedersen_hash(
nonce, pedersen_hash(some_vehicle, pedersen_hash(state_hash, 0)))
sig_r, sig_s = sign(msg_hash=message_hash, priv_key=some_signer_secret)
await contract.attest_state(
vehicle_id=some_vehicle,
nonce=nonce,
state_hash=state_hash,
).invoke(signature=[sig_r, sig_s])
# Check the nonce was incremented
new_nonce = await contract.get_nonce(vehicle_id=some_vehicle).call()
assert new_nonce.result == (nonce + 1, )