eth2.0-specs/deposit_contract/tests/contracts/conftest.py

73 lines
1.6 KiB
Python

from random import (
randint,
)
import re
import pytest
import eth_tester
from eth_tester import (
EthereumTester,
PyEVMBackend,
)
from vyper import (
compiler,
)
from web3 import Web3
from web3.providers.eth_tester import (
EthereumTesterProvider,
)
from .utils import (
get_deposit_contract_code,
get_deposit_contract_json,
)
# Constants
MIN_DEPOSIT_AMOUNT = 1000000000 # Gwei
FULL_DEPOSIT_AMOUNT = 32000000000 # Gwei
DEPOSIT_CONTRACT_TREE_DEPTH = 32
TWO_TO_POWER_OF_TREE_DEPTH = 2**DEPOSIT_CONTRACT_TREE_DEPTH
@pytest.fixture
def tester():
return EthereumTester(PyEVMBackend())
@pytest.fixture
def a0(tester):
return tester.get_accounts()[0]
@pytest.fixture
def w3(tester):
web3 = Web3(EthereumTesterProvider(tester))
return web3
@pytest.fixture
def registration_contract(w3, tester):
contract_bytecode = get_deposit_contract_json()['bytecode']
contract_abi = get_deposit_contract_json()['abi']
registration = w3.eth.contract(
abi=contract_abi,
bytecode=contract_bytecode)
tx_hash = registration.constructor().transact()
tx_receipt = w3.eth.waitForTransactionReceipt(tx_hash)
registration_deployed = w3.eth.contract(
address=tx_receipt.contractAddress,
abi=contract_abi
)
return registration_deployed
@pytest.fixture
def assert_tx_failed(tester):
def assert_tx_failed(function_to_test, exception=eth_tester.exceptions.TransactionFailed):
snapshot_id = tester.take_snapshot()
with pytest.raises(exception):
function_to_test()
tester.revert_to_snapshot(snapshot_id)
return assert_tx_failed