def get_server(privkey, address):
base_db = AtomicDB()
headerdb = FakeAsyncHeaderDB(base_db)
chaindb = ChainDB(base_db)
chaindb.persist_header(ROPSTEN_GENESIS_HEADER)
chain = RopstenChain(base_db)
server = ParagonServer(
privkey=privkey,
port=address.tcp_port,
chain=chain,
chaindb=chaindb,
headerdb=headerdb,
base_db=base_db,
network_id=NETWORK_ID,
)
return server
def prepare_computation(vm_class):
message = Message(
to=CANONICAL_ADDRESS_A,
sender=CANONICAL_ADDRESS_B,
value=100,
data=b'',
code=b'',
gas=800,
)
tx_context = vm_class._state_class.transaction_context_class(
gas_price=1,
origin=CANONICAL_ADDRESS_B,
)
vm = vm_class(GENESIS_HEADER, ChainDB(AtomicDB()))
computation = vm_class._state_class.computation_class(
state=vm.state,
message=message,
transaction_context=tx_context,
)
computation.state.account_db.touch_account(
decode_hex(EMPTY_ADDRESS_IN_STATE))
computation.state.account_db.set_code(decode_hex(ADDRESS_WITH_CODE[0]),
ADDRESS_WITH_CODE[1])
return computation
def database_server_ipc_path():
core_db = AtomicDB()
core_db[b'key-a'] = b'value-a'
chaindb = ChainDB(core_db)
# TODO: use a custom chain class only for testing.
chaindb.persist_header(ROPSTEN_GENESIS_HEADER)
with tempfile.TemporaryDirectory() as temp_dir:
chain_config = ChainConfig(network_id=ROPSTEN_NETWORK_ID, max_peers=1, data_dir=temp_dir)
manager = get_chaindb_manager(chain_config, core_db)
chaindb_server_process = multiprocessing.Process(
target=serve_chaindb,
args=(manager,),
)
chaindb_server_process.start()
wait_for_ipc(chain_config.database_ipc_path)
try:
yield chain_config.database_ipc_path
finally:
kill_process_gracefully(chaindb_server_process, logging.getLogger())
def chaindb(chain_config):
return ChainDB(LevelDB(db_path=chain_config.database_dir))
def test_vm_fixtures(fixture, vm_class, computation_getter):
chaindb = ChainDB(get_db_backend())
header = BlockHeader(
coinbase=fixture['env']['currentCoinbase'],
difficulty=fixture['env']['currentDifficulty'],
block_number=fixture['env']['currentNumber'],
gas_limit=fixture['env']['currentGasLimit'],
timestamp=fixture['env']['currentTimestamp'],
)
vm = vm_class(header=header, chaindb=chaindb)
state = vm.state
setup_account_db(fixture['pre'], state.account_db)
code = state.account_db.get_code(fixture['exec']['address'])
# Update state_root manually
vm.block = vm.block.copy(header=vm.block.header.copy(
state_root=state.state_root))
message = Message(
to=fixture['exec']['address'],
sender=fixture['exec']['caller'],
value=fixture['exec']['value'],
data=fixture['exec']['data'],
code=code,
gas=fixture['exec']['gas'],
)
transaction_context = BaseTransactionContext(
origin=fixture['exec']['origin'],
gas_price=fixture['exec']['gasPrice'],
)
computation = vm.state.get_computation(
message, transaction_context).apply_computation(
vm.state,
message,
transaction_context,
)
# Update state_root manually
vm.block = vm.block.copy(
header=vm.block.header.copy(state_root=computation.state.state_root), )
if 'post' in fixture:
#
# Success checks
#
assert not computation.is_error
log_entries = computation.get_log_entries()
if 'logs' in fixture:
actual_logs_hash = hash_log_entries(log_entries)
expected_logs_hash = fixture['logs']
assert expected_logs_hash == actual_logs_hash
elif log_entries:
raise AssertionError("Got log entries: {0}".format(log_entries))
expected_output = fixture['out']
assert computation.output == expected_output
gas_meter = computation._gas_meter
expected_gas_remaining = fixture['gas']
actual_gas_remaining = gas_meter.gas_remaining
gas_delta = actual_gas_remaining - expected_gas_remaining
assert gas_delta == 0, "Gas difference: {0}".format(gas_delta)
call_creates = fixture.get('callcreates', [])
assert len(computation.children) == len(call_creates)
call_creates = fixture.get('callcreates', [])
for child_computation, created_call in zip(computation.children,
call_creates):
to_address = created_call['destination']
data = created_call['data']
gas_limit = created_call['gasLimit']
value = created_call['value']
assert child_computation.msg.to == to_address
assert data == child_computation.msg.data or child_computation.msg.code
assert gas_limit == child_computation.msg.gas
assert value == child_computation.msg.value
expected_account_db = fixture['post']
else:
#
# Error checks
#
assert computation.is_error
assert isinstance(computation._error, VMError)
expected_account_db = fixture['pre']
verify_account_db(expected_account_db, vm.state.account_db)
def chaindb(base_db):
return ChainDB(base_db)
def test_state_fixtures(fixture, fixture_vm_class):
header = BlockHeader(
coinbase=fixture['env']['currentCoinbase'],
difficulty=fixture['env']['currentDifficulty'],
block_number=fixture['env']['currentNumber'],
gas_limit=fixture['env']['currentGasLimit'],
timestamp=fixture['env']['currentTimestamp'],
parent_hash=fixture['env']['previousHash'],
)
chaindb = ChainDB(get_db_backend())
vm = fixture_vm_class(header=header, chaindb=chaindb)
state = vm.state
apply_state_dict(state.account_db, fixture['pre'])
state.account_db.persist()
# Update state_root manually
vm.block = vm.block.copy(header=vm.block.header.copy(state_root=state.state_root))
if 'secretKey' in fixture['transaction']:
unsigned_transaction = vm.create_unsigned_transaction(
nonce=fixture['transaction']['nonce'],
gas_price=fixture['transaction']['gasPrice'],
gas=fixture['transaction']['gasLimit'],
to=fixture['transaction']['to'],
value=fixture['transaction']['value'],
data=fixture['transaction']['data'],
)
private_key = keys.PrivateKey(fixture['transaction']['secretKey'])
transaction = unsigned_transaction.as_signed_transaction(private_key=private_key)
elif 'vrs' in fixture['transaction']:
v, r, s = (
fixture['transaction']['v'],
fixture['transaction']['r'],
fixture['transaction']['s'],
)
transaction = vm.create_transaction(
nonce=fixture['transaction']['nonce'],
gas_price=fixture['transaction']['gasPrice'],
gas=fixture['transaction']['gasLimit'],
to=fixture['transaction']['to'],
value=fixture['transaction']['value'],
data=fixture['transaction']['data'],
v=v,
r=r,
s=s,
)
try:
header, receipt, computation = vm.apply_transaction(vm.block.header, transaction)
transactions = vm.block.transactions + (transaction, )
receipts = vm.block.get_receipts(chaindb) + (receipt, )
block = vm.set_block_transactions(vm.block, header, transactions, receipts)
except ValidationError as err:
block = vm.block
transaction_error = err
logger.warning("Got transaction error", exc_info=True)
else:
transaction_error = False
if not transaction_error:
log_entries = computation.get_log_entries()
actual_logs_hash = hash_log_entries(log_entries)
if 'logs' in fixture['post']:
expected_logs_hash = fixture['post']['logs']
assert expected_logs_hash == actual_logs_hash
elif log_entries:
raise AssertionError("Got log {0} entries. hash:{1}".format(
len(log_entries),
actual_logs_hash,
))
if 'out' in fixture:
expected_output = fixture['out']
if isinstance(expected_output, int):
assert len(computation.output) == expected_output
else:
assert computation.output == expected_output
assert block.header.state_root == fixture['post']['hash']