def test_blockchain_fixtures(fixture_data, fixture):
try:
chain = new_chain_from_fixture(fixture)
except ValueError as e:
raise AssertionError("could not load chain for %r" %
fixture_data) from e
genesis_params = genesis_params_from_fixture(fixture)
expected_genesis_header = BlockHeader(**genesis_params)
# TODO: find out if this is supposed to pass?
# if 'genesisRLP' in fixture:
# assert rlp.encode(genesis_header) == fixture['genesisRLP']
genesis_block = chain.get_canonical_block_by_number(0)
genesis_header = genesis_block.header
assert_rlp_equal(genesis_header, expected_genesis_header)
# 1 - mine the genesis block
# 2 - loop over blocks:
# - apply transactions
# - mine block
# 4 - profit!!
for block_fixture in fixture['blocks']:
should_be_good_block = 'blockHeader' in block_fixture
if 'rlp_error' in block_fixture:
assert not should_be_good_block
continue
try:
(block, mined_block,
block_rlp) = apply_fixture_block_to_chain(block_fixture, chain)
except (TypeError, rlp.DecodingError, rlp.DeserializationError,
ValidationError) as err:
assert not should_be_good_block, "Block should be good: {0}".format(
err)
else:
assert_rlp_equal(block, mined_block)
assert should_be_good_block, "Block should have caused a validation error"
latest_block_hash = chain.get_canonical_block_by_number(
chain.get_block().number - 1).hash
assert latest_block_hash == fixture['lastblockhash']
with chain.get_vm().state.state_db(read_only=True) as state_db:
verify_state_db(fixture['postState'], state_db)
def test_blockchain_fixtures(fixture_name, fixture):
genesis_params = {
'parent_hash': fixture['genesisBlockHeader']['parentHash'],
'uncles_hash': fixture['genesisBlockHeader']['uncleHash'],
'coinbase': fixture['genesisBlockHeader']['coinbase'],
'state_root': fixture['genesisBlockHeader']['stateRoot'],
'transaction_root': fixture['genesisBlockHeader']['transactionsTrie'],
'receipt_root': fixture['genesisBlockHeader']['receiptTrie'],
'bloom': fixture['genesisBlockHeader']['bloom'],
'difficulty': fixture['genesisBlockHeader']['difficulty'],
'block_number': fixture['genesisBlockHeader']['number'],
'gas_limit': fixture['genesisBlockHeader']['gasLimit'],
'gas_used': fixture['genesisBlockHeader']['gasUsed'],
'timestamp': fixture['genesisBlockHeader']['timestamp'],
'extra_data': fixture['genesisBlockHeader']['extraData'],
'mix_hash': fixture['genesisBlockHeader']['mixHash'],
'nonce': fixture['genesisBlockHeader']['nonce'],
}
expected_genesis_header = BlockHeader(**genesis_params)
# TODO: find out if this is supposed to pass?
# if 'genesisRLP' in fixture:
# assert rlp.encode(genesis_header) == fixture['genesisRLP']
db = MemoryDB()
evm = MainnetEVM.from_genesis(
db,
genesis_params=genesis_params,
genesis_state=fixture['pre'],
)
genesis_block = evm.get_block_by_number(0)
genesis_header = genesis_block.header
assert_rlp_equal(genesis_header, expected_genesis_header)
# 1 - mine the genesis block
# 2 - loop over blocks:
# - apply transactions
# - mine block
# 4 - profit!!
for block_data in fixture['blocks']:
should_be_good_block = 'blockHeader' in block_data
if 'rlp_error' in block_data:
assert not should_be_good_block
continue
try:
block = rlp.decode(
block_data['rlp'],
sedes=evm.get_vm().get_block_class(),
db=db,
)
except (TypeError, rlp.DecodingError, rlp.DeserializationError) as err:
assert not should_be_good_block, "Block should be good: {0}".format(
err)
continue
try:
mined_block = evm.import_block(block)
assert_rlp_equal(mined_block, block)
except ValidationError as err:
assert not should_be_good_block, "Block should be good: {0}".format(
err)
continue
else:
assert should_be_good_block, "Block should have caused a validation error"
assert evm.get_block_by_number(evm.get_block().number -
1).hash == fixture['lastblockhash']
verify_state_db(fixture['postState'], evm.get_state_db())
def test_get_block_header_by_hash(chaindb, block, header):
chaindb.persist_block_to_db(block)
block_header = chaindb.get_block_header_by_hash(block.hash)
assert_rlp_equal(block_header, header)
def test_blockchain_fixtures(fixture_name, fixture):
genesis_params = {
'parent_hash': fixture['genesisBlockHeader']['parentHash'],
'uncles_hash': fixture['genesisBlockHeader']['uncleHash'],
'coinbase': fixture['genesisBlockHeader']['coinbase'],
'state_root': fixture['genesisBlockHeader']['stateRoot'],
'transaction_root': fixture['genesisBlockHeader']['transactionsTrie'],
'receipt_root': fixture['genesisBlockHeader']['receiptTrie'],
'bloom': fixture['genesisBlockHeader']['bloom'],
'difficulty': fixture['genesisBlockHeader']['difficulty'],
'block_number': fixture['genesisBlockHeader']['number'],
'gas_limit': fixture['genesisBlockHeader']['gasLimit'],
'gas_used': fixture['genesisBlockHeader']['gasUsed'],
'timestamp': fixture['genesisBlockHeader']['timestamp'],
'extra_data': fixture['genesisBlockHeader']['extraData'],
'mix_hash': fixture['genesisBlockHeader']['mixHash'],
'nonce': fixture['genesisBlockHeader']['nonce'],
}
expected_genesis_header = BlockHeader(**genesis_params)
# TODO: find out if this is supposed to pass?
# if 'genesisRLP' in fixture:
# assert rlp.encode(genesis_header) == fixture['genesisRLP']
db = get_db_backend()
chain = MainnetChain
# TODO: It would be great if we can figure out an API for re-configuring
# start block numbers that was more elegant.
if fixture_name.startswith('Homestead'):
chain = Chain.configure('HomesteadChain',
vm_configuration=[(0, HomesteadVM)])
elif fixture_name.startswith('EIP150'):
chain = Chain.configure('EIP150VM', vm_configuration=[(0, EIP150VM)])
elif fixture_name.startswith('TestNetwork'):
homestead_vm = HomesteadVM.configure(dao_fork_block_number=8)
chain = Chain.configure('TestNetworkChain',
vm_configuration=[
(0, FrontierVM),
(5, homestead_vm),
(10, EIP150VM),
])
chain = chain.from_genesis(
db,
genesis_params=genesis_params,
genesis_state=fixture['pre'],
)
genesis_block = chain.get_canonical_block_by_number(0)
genesis_header = genesis_block.header
assert_rlp_equal(genesis_header, expected_genesis_header)
# 1 - mine the genesis block
# 2 - loop over blocks:
# - apply transactions
# - mine block
# 4 - profit!!
for block_data in fixture['blocks']:
should_be_good_block = 'blockHeader' in block_data
if 'rlp_error' in block_data:
assert not should_be_good_block
continue
# The block to import may be in a different block-class-range than the
# chain's current one, so we use the block number specified in the
# fixture to look up the correct block class.
if should_be_good_block:
block_number = block_data['blockHeader']['number']
block_class = chain.get_vm_class_for_block_number(
block_number).get_block_class()
else:
block_class = chain.get_vm().get_block_class()
try:
block = rlp.decode(block_data['rlp'], sedes=block_class, db=db)
except (TypeError, rlp.DecodingError, rlp.DeserializationError) as err:
assert not should_be_good_block, "Block should be good: {0}".format(
err)
continue
try:
mined_block = chain.import_block(block)
except ValidationError as err:
assert not should_be_good_block, "Block should be good: {0}".format(
err)
continue
else:
assert_rlp_equal(mined_block, block)
assert should_be_good_block, "Block should have caused a validation error"
latest_block_hash = chain.get_canonical_block_by_number(
chain.get_block().number - 1).hash
assert latest_block_hash == fixture['lastblockhash']
verify_state_db(fixture['postState'], chain.get_state_db())
def test_blockchain_fixtures(fixture, chain_vm_configuration):
genesis_params = {
'parent_hash': fixture['genesisBlockHeader']['parentHash'],
'uncles_hash': fixture['genesisBlockHeader']['uncleHash'],
'coinbase': fixture['genesisBlockHeader']['coinbase'],
'state_root': fixture['genesisBlockHeader']['stateRoot'],
'transaction_root': fixture['genesisBlockHeader']['transactionsTrie'],
'receipt_root': fixture['genesisBlockHeader']['receiptTrie'],
'bloom': fixture['genesisBlockHeader']['bloom'],
'difficulty': fixture['genesisBlockHeader']['difficulty'],
'block_number': fixture['genesisBlockHeader']['number'],
'gas_limit': fixture['genesisBlockHeader']['gasLimit'],
'gas_used': fixture['genesisBlockHeader']['gasUsed'],
'timestamp': fixture['genesisBlockHeader']['timestamp'],
'extra_data': fixture['genesisBlockHeader']['extraData'],
'mix_hash': fixture['genesisBlockHeader']['mixHash'],
'nonce': fixture['genesisBlockHeader']['nonce'],
}
expected_genesis_header = BlockHeader(**genesis_params)
# TODO: find out if this is supposed to pass?
# if 'genesisRLP' in fixture:
# assert rlp.encode(genesis_header) == fixture['genesisRLP']
db = BaseChainDB(get_db_backend())
ChainForTesting = MainnetChain.configure(
'ChainForTesting',
vm_configuration=chain_vm_configuration,
)
chain = ChainForTesting.from_genesis(
db,
genesis_params=genesis_params,
genesis_state=fixture['pre'],
)
genesis_block = chain.get_canonical_block_by_number(0)
genesis_header = genesis_block.header
assert_rlp_equal(genesis_header, expected_genesis_header)
# 1 - mine the genesis block
# 2 - loop over blocks:
# - apply transactions
# - mine block
# 4 - profit!!
for block_data in fixture['blocks']:
should_be_good_block = 'blockHeader' in block_data
if 'rlp_error' in block_data:
assert not should_be_good_block
continue
# The block to import may be in a different block-class-range than the
# chain's current one, so we use the block number specified in the
# fixture to look up the correct block class.
if should_be_good_block:
block_number = block_data['blockHeader']['number']
block_class = chain.get_vm_class_for_block_number(
block_number).get_block_class()
else:
block_class = chain.get_vm().get_block_class()
try:
block = rlp.decode(block_data['rlp'],
sedes=block_class,
chaindb=chain.chaindb)
except (TypeError, rlp.DecodingError, rlp.DeserializationError) as err:
assert not should_be_good_block, "Block should be good: {0}".format(
err)
continue
try:
mined_block = chain.import_block(block)
except ValidationError as err:
assert not should_be_good_block, "Block should be good: {0}".format(
err)
continue
else:
assert_rlp_equal(mined_block, block)
assert should_be_good_block, "Block should have caused a validation error"
latest_block_hash = chain.get_canonical_block_by_number(
chain.get_block().number - 1).hash
assert latest_block_hash == fixture['lastblockhash']
with chain.get_vm().state_db(read_only=True) as state_db:
verify_state_db(fixture['postState'], state_db)
def test_get_block_header_by_hash(db, block, header):
persist_block_to_db(db, block)
block_header = get_block_header_by_hash(db, block.hash)
assert_rlp_equal(block_header, header)
