70 lines
1.7 KiB
Python
70 lines
1.7 KiB
Python
import pytest
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import eth_tester
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from eth_tester import (
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EthereumTester,
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PyEVMBackend,
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)
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from web3 import Web3
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from web3.providers.eth_tester import EthereumTesterProvider
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import json
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import os
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DIR = os.path.dirname(__file__)
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def get_deposit_contract_json():
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file_path = os.path.join(DIR, '../../deposit_contract.json')
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deposit_contract_json = open(file_path).read()
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return json.loads(deposit_contract_json)
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# Constants
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MIN_DEPOSIT_AMOUNT = 1000000000 # Gwei
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FULL_DEPOSIT_AMOUNT = 32000000000 # Gwei
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DEPOSIT_CONTRACT_TREE_DEPTH = 32
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TWO_TO_POWER_OF_TREE_DEPTH = 2**DEPOSIT_CONTRACT_TREE_DEPTH
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@pytest.fixture
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def tester():
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return EthereumTester(PyEVMBackend())
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@pytest.fixture
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def a0(tester):
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return tester.get_accounts()[0]
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@pytest.fixture
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def w3(tester):
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web3 = Web3(EthereumTesterProvider(tester))
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return web3
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@pytest.fixture
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def registration_contract(w3, tester):
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contract_bytecode = get_deposit_contract_json()['bytecode']
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contract_abi = get_deposit_contract_json()['abi']
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registration = w3.eth.contract(
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abi=contract_abi,
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bytecode=contract_bytecode)
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tx_hash = registration.constructor().transact()
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tx_receipt = w3.eth.waitForTransactionReceipt(tx_hash)
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registration_deployed = w3.eth.contract(
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address=tx_receipt.contractAddress,
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abi=contract_abi
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)
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return registration_deployed
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@pytest.fixture
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def assert_tx_failed(tester):
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def assert_tx_failed(function_to_test, exception=eth_tester.exceptions.TransactionFailed):
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snapshot_id = tester.take_snapshot()
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with pytest.raises(exception):
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function_to_test()
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tester.revert_to_snapshot(snapshot_id)
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return assert_tx_failed
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