def test_constantly():
give_me_two = constantly(2)
assert 2 == give_me_two()
assert 2 == give_me_two(1)
assert 2 == give_me_two(1, 2)
assert 2 == give_me_two(a=2, b=33)
assert 2 == give_me_two(1, 2, a=2, b=33)
def _from_genesis_block(
cls,
base_db: AtomicDatabaseAPI,
genesis_block: BaseBeaconBlock,
genesis_config: Eth2GenesisConfig,
) -> "BaseBeaconChain":
"""
Initialize the ``BeaconChain`` from the genesis block.
"""
chaindb = cls.get_chaindb_class()(db=base_db, genesis_config=genesis_config)
genesis_scoring = constantly(0)
chaindb.persist_block(genesis_block, genesis_block.__class__, genesis_scoring)
return cls(base_db, genesis_config)
def _from_genesis_block(
cls, base_db: BaseAtomicDB, attestation_pool: AttestationPool,
genesis_block: BaseBeaconBlock,
genesis_config: Eth2GenesisConfig) -> 'BaseBeaconChain':
"""
Initialize the ``BeaconChain`` from the genesis block.
"""
chaindb = cls.get_chaindb_class()(db=base_db,
genesis_config=genesis_config)
genesis_scoring = constantly(0)
chaindb.persist_block(genesis_block, genesis_block.__class__,
genesis_scoring)
return cls(base_db, attestation_pool, genesis_config)