def test_forkid():
forkid = ForkID(hash=b'\xe0)\xe9\x91', next=999)
assert forkid.hash == b'\xe0)\xe9\x91'
assert forkid.next == 999
# A hash with length diffrent than 4 is not allowed.
with pytest.raises(ValueError):
forkid = ForkID(hash=b'\x00\x00\x00\x02Q\xc0', next=0)
with pytest.raises(ValueError):
forkid = ForkID(hash=b'\x02Q\xc0', next=0)
def test_extract_forkid():
enr = ENR.from_repr(
"enr:-Jq4QO5zEyIBU5lSa9iaen0A2xUB5_IVrCi1DbyASTTnLV5RJan6aGPr8kU0p0MYKU5YezZgdSUE"
"-GOBEio6Ultyf1Aog2V0aMrJhGN2AZCDGfCggmlkgnY0gmlwhF4_wLuJc2VjcDI1NmsxoQOt7cA_B_Kg"
"nQ5RmwyA6ji8M1Y0jfINItRGbOOwy7XgbIN0Y3CCdl-DdWRwgnZf")
assert extract_forkid(enr) == ForkID(hash=to_bytes(hexstr='0x63760190'),
next=1700000)
async def test_generate_eth_cap_enr_field():
base_db = AtomicDB()
ChainDB(base_db).persist_header(ROPSTEN_GENESIS_HEADER)
enr_field = await generate_eth_cap_enr_field(ROPSTEN_VM_CONFIGURATION, AsyncHeaderDB(base_db))
enr = ENRFactory(custom_kv_pairs={enr_field[0]: enr_field[1]})
assert extract_forkid(enr) == ForkID(hash=to_bytes(hexstr='0x30c7ddbc'), next=10)
class StatusPayloadFactory(factory.Factory):
class Meta:
model = StatusPayload
version = ETHProtocol.version
network_id = MAINNET_NETWORK_ID
total_difficulty = 1
head_hash = factory.SubFactory(BlockHashFactory)
genesis_hash = factory.SubFactory(BlockHashFactory)
fork_id = ForkID(to_bytes(hexstr='0xfc64ec04'),
BlockNumber(1150000)) # unsynced
@classmethod
def from_headerdb(cls, headerdb: HeaderDatabaseAPI,
**kwargs: Any) -> StatusPayload:
head = headerdb.get_canonical_head()
head_score = headerdb.get_score(head.hash)
genesis = headerdb.get_canonical_block_header_by_number(
GENESIS_BLOCK_NUMBER)
return cls(head_hash=head.hash,
genesis_hash=genesis.hash,
total_difficulty=head_score,
fork_id=cls.fork_id,
**kwargs)
)
ROPSTEN_GENESIS_HASH = to_bytes(
hexstr='0x41941023680923e0fe4d74a34bdac8141f2540e3ae90623718e47d66d1ca4a2d'
)
def test_extract_fork_blocks():
fork_blocks = extract_fork_blocks(MAINNET_VM_CONFIGURATION)
assert fork_blocks == (1150000, 1920000, 2463000, 2675000, 4370000,
7280000, 9069000, 9200000)
@pytest.mark.parametrize(
'head,expected_forkid',
[
(0, ForkID(hash=to_bytes(hexstr='0xfc64ec04'),
next=1150000)), # Unsynced
(1149999, ForkID(hash=to_bytes(hexstr='0xfc64ec04'),
next=1150000)), # Last Frontier
(1150000, ForkID(hash=to_bytes(hexstr='0x97c2c34c'),
next=1920000)), # First Homestead
(1919999, ForkID(hash=to_bytes(hexstr='0x97c2c34c'),
next=1920000)), # Last Homestead
(1920000, ForkID(hash=to_bytes(hexstr='0x91d1f948'),
next=2463000)), # First DAO block
(2462999, ForkID(hash=to_bytes(hexstr='0x91d1f948'),
next=2463000)), # Last DAO block
(2463000, ForkID(hash=to_bytes(hexstr='0x7a64da13'),
next=2675000)), # First Tangerine
(2674999, ForkID(hash=to_bytes(hexstr='0x7a64da13'),
next=2675000)), # Last Tangerine
(2675000, ForkID(hash=to_bytes(hexstr='0x3edd5b10'),