def test_get_attestation_root(valid_chain, genesis_block, genesis_state,
config, keymap, min_attestation_inclusion_delay):
state_machine = valid_chain.get_state_machine()
attestations = create_mock_signed_attestations_at_slot(
state=genesis_state,
config=config,
state_machine=state_machine,
attestation_slot=genesis_block.slot,
beacon_block_root=genesis_block.signing_root,
keymap=keymap,
)
block = create_mock_block(
state=genesis_state,
config=config,
state_machine=state_machine,
block_class=genesis_block.__class__,
parent_block=genesis_block,
keymap=keymap,
slot=genesis_state.slot + 1,
attestations=attestations,
)
valid_chain.import_block(block)
# Only one attestation in attestations, so just check that one
a0 = attestations[0]
assert valid_chain.get_attestation_by_root(a0.root) == a0
assert valid_chain.attestation_exists(a0.root)
fake_attestation = a0.copy(signature=b'\x78' * 96, )
with pytest.raises(AttestationRootNotFound):
valid_chain.get_attestation_by_root(fake_attestation.root)
assert not valid_chain.attestation_exists(fake_attestation.root)
def test_process_max_attestations(genesis_state, genesis_block,
sample_beacon_block_params,
sample_beacon_block_body_params, config,
keymap):
attestation_slot = config.GENESIS_SLOT
current_slot = attestation_slot + config.MIN_ATTESTATION_INCLUSION_DELAY
state = genesis_state.copy(slot=current_slot, )
attestations = create_mock_signed_attestations_at_slot(
state=state,
config=config,
attestation_slot=attestation_slot,
beacon_block_root=genesis_block.root,
keymap=keymap,
voted_attesters_ratio=1.0,
)
attestations_count = len(attestations)
assert attestations_count > 0
block_body = BeaconBlockBody(**sample_beacon_block_body_params).copy(
attestations=attestations *
(attestations_count // config.MAX_ATTESTATIONS + 1), )
block = SerenityBeaconBlock(**sample_beacon_block_params).copy(
slot=current_slot,
body=block_body,
)
with pytest.raises(ValidationError):
process_attestations(
state,
block,
config,
)
def test_process_attestations(genesis_state, genesis_block,
sample_beacon_block_params,
sample_beacon_block_body_params, config, keymap,
fixture_sm_class, chaindb,
empty_attestation_pool, success):
attestation_slot = 0
current_slot = attestation_slot + config.MIN_ATTESTATION_INCLUSION_DELAY
state = genesis_state.copy(slot=current_slot, )
attestations = create_mock_signed_attestations_at_slot(
state=state,
config=config,
state_machine=fixture_sm_class(
chaindb,
empty_attestation_pool,
genesis_block.slot,
),
attestation_slot=attestation_slot,
beacon_block_root=genesis_block.signing_root,
keymap=keymap,
voted_attesters_ratio=1.0,
)
assert len(attestations) > 0
if not success:
# create invalid attestation by shard
# i.e. wrong parent
invalid_attestation_data = attestations[-1].data.copy(
crosslink=attestations[-1].data.crosslink.copy(
parent_root=Crosslink(shard=333, ).root, ))
invalid_attestation = attestations[-1].copy(
data=invalid_attestation_data, )
attestations = attestations[:-1] + (invalid_attestation, )
block_body = BeaconBlockBody(**sample_beacon_block_body_params).copy(
attestations=attestations, )
block = SerenityBeaconBlock(**sample_beacon_block_params).copy(
slot=current_slot,
body=block_body,
)
if success:
new_state = process_attestations(
state,
block,
config,
)
assert len(new_state.current_epoch_attestations) == len(attestations)
else:
with pytest.raises(ValidationError):
process_attestations(
state,
block,
config,
)
def test_process_attestations(genesis_state, genesis_block,
sample_beacon_block_params,
sample_beacon_block_body_params, config, keymap,
fixture_sm_class, base_db, success):
attestation_slot = 0
current_slot = attestation_slot + config.MIN_ATTESTATION_INCLUSION_DELAY
state = genesis_state.copy(slot=current_slot, )
attestations = create_mock_signed_attestations_at_slot(
state=state,
config=config,
state_machine=fixture_sm_class(
BeaconChainDB(base_db),
genesis_block,
),
attestation_slot=attestation_slot,
beacon_block_root=genesis_block.signed_root,
keymap=keymap,
voted_attesters_ratio=1.0,
)
assert len(attestations) > 0
if not success:
# create invalid attestation in the future
invalid_attestation_data = attestations[-1].data.copy(slot=state.slot +
10, )
invalid_attestation = attestations[-1].copy(
data=invalid_attestation_data, )
attestations = attestations[:-1] + (invalid_attestation, )
block_body = BeaconBlockBody(**sample_beacon_block_body_params).copy(
attestations=attestations, )
block = SerenityBeaconBlock(**sample_beacon_block_params).copy(
slot=current_slot,
body=block_body,
)
if success:
new_state = process_attestations(
state,
block,
config,
)
assert len(new_state.current_epoch_attestations) == len(attestations)
else:
with pytest.raises(ValidationError):
process_attestations(
state,
block,
config,
)
def test_process_attestations(
genesis_state,
genesis_block,
sample_beacon_block_params,
sample_beacon_block_body_params,
config,
keymap,
fixture_sm_class,
chaindb,
genesis_fork_choice_context,
success,
):
attestation_slot = 0
current_slot = attestation_slot + config.MIN_ATTESTATION_INCLUSION_DELAY
state = genesis_state.set("slot", current_slot)
attestations = create_mock_signed_attestations_at_slot(
state=state,
config=config,
state_machine=fixture_sm_class(chaindb, genesis_fork_choice_context),
attestation_slot=attestation_slot,
beacon_block_root=genesis_block.message.hash_tree_root,
keymap=keymap,
voted_attesters_ratio=1.0,
)
assert len(attestations) > 0
if not success:
# create invalid attestation
# i.e. wrong slot
invalid_attestation_data = attestations[-1].data.set(
"slot", state.slot + 1)
invalid_attestation = attestations[-1].set("data",
invalid_attestation_data)
attestations = attestations[:-1] + (invalid_attestation, )
block_body = BeaconBlockBody.create(**sample_beacon_block_body_params).set(
"attestations", attestations)
block = SerenityBeaconBlock.create(**sample_beacon_block_params).mset(
"slot", current_slot, "body", block_body)
if success:
new_state = process_attestations(state, block, config)
assert len(new_state.current_epoch_attestations) == len(attestations)
else:
with pytest.raises(ValidationError):
process_attestations(state, block, config)
def test_process_attestations(genesis_state, sample_beacon_block_params,
sample_beacon_block_body_params, config, keymap,
success):
attestation_slot = 0
current_slot = attestation_slot + config.MIN_ATTESTATION_INCLUSION_DELAY
state = genesis_state.copy(slot=current_slot, )
attestations = create_mock_signed_attestations_at_slot(
state,
config,
attestation_slot,
keymap,
1.0,
)
assert len(attestations) > 0
if not success:
# create invalid attestation in the future
invalid_attestation_data = attestations[-1].data.copy(slot=state.slot +
10, )
invalid_attestation = attestations[-1].copy(
data=invalid_attestation_data, )
attestations = attestations[:-1] + (invalid_attestation, )
block_body = BeaconBlockBody(**sample_beacon_block_body_params).copy(
attestations=attestations, )
block = SerenityBeaconBlock(**sample_beacon_block_params).copy(
slot=current_slot,
body=block_body,
)
if success:
new_state = process_attestations(
state,
block,
config,
)
assert len(new_state.latest_attestations) == len(attestations)
else:
with pytest.raises(ValidationError):
process_attestations(
state,
block,
config,
)
def _build_chain_of_blocks_with_states(
chain,
state,
parent_block,
slots,
config,
keymap,
attestation_participation=1.0,
eth1_block_hash=ZERO_HASH32,
):
blocks = ()
states = ()
for slot in range(parent_block.slot + 1, parent_block.slot + 1 + slots):
sm = chain.get_state_machine(state.slot)
pre_state, _ = sm.apply_state_transition(state, future_slot=slot)
proposer_index = get_beacon_proposer_index(pre_state, config)
public_key = state.validators[proposer_index].pubkey
private_key = keymap[public_key]
randao_reveal = generate_randao_reveal(private_key, slot, pre_state,
config)
attestations = create_mock_signed_attestations_at_slot(
state,
config,
sm,
slot - 1,
parent_block.hash_tree_root,
keymap,
voted_attesters_ratio=attestation_participation,
)
block = create_block(
slot,
parent_block.hash_tree_root,
randao_reveal,
Eth1Data.create(block_hash=eth1_block_hash),
attestations,
state,
sm,
private_key,
)
parent_block = block.message
state, block = sm.apply_state_transition(state, block)
blocks += (block, )
states += (state, )
return blocks, states
def test_get_attestation_root(valid_chain, genesis_block, genesis_state,
keymap, min_attestation_inclusion_delay):
state_machine = valid_chain.get_state_machine()
config = state_machine.config
attestations = create_mock_signed_attestations_at_slot(
state=genesis_state,
config=config,
state_machine=state_machine,
attestation_slot=genesis_block.slot,
beacon_block_root=genesis_block.message.hash_tree_root,
keymap=keymap,
)
state = genesis_state
slot = genesis_state.slot + 1
future_state, _ = state_machine.apply_state_transition(state,
future_slot=slot)
proposer_index = get_beacon_proposer_index(future_state, config)
proposer = state.validators[proposer_index].pubkey
private_key = keymap[proposer]
randao_reveal = generate_randao_reveal(private_key, slot, state, config)
block = create_block(
slot,
genesis_block.message.hash_tree_root,
randao_reveal,
state.eth1_data,
attestations,
state,
state_machine,
private_key,
)
valid_chain.import_block(block)
# Only one attestation in attestations, so just check that one
a0 = attestations[0]
assert valid_chain.get_attestation_by_root(a0.hash_tree_root) == a0
assert valid_chain.attestation_exists(a0.hash_tree_root)
fake_attestation = a0.set("signature", b"\x78" * 96)
with pytest.raises(AttestationRootNotFound):
valid_chain.get_attestation_by_root(fake_attestation.hash_tree_root)
assert not valid_chain.attestation_exists(fake_attestation.hash_tree_root)
def test_process_max_attestations(
genesis_state,
genesis_block,
sample_beacon_block_params,
sample_beacon_block_body_params,
config,
keymap,
fixture_sm_class,
chaindb,
genesis_fork_choice_context,
):
attestation_slot = config.GENESIS_SLOT
current_slot = attestation_slot + config.MIN_ATTESTATION_INCLUSION_DELAY
state = genesis_state.copy(slot=current_slot)
attestations = create_mock_signed_attestations_at_slot(
state=state,
config=config,
state_machine=fixture_sm_class(chaindb, genesis_fork_choice_context),
attestation_slot=attestation_slot,
beacon_block_root=genesis_block.signing_root,
keymap=keymap,
voted_attesters_ratio=1.0,
)
attestations_count = len(attestations)
assert attestations_count > 0
block_body = BeaconBlockBody(**sample_beacon_block_body_params).copy(
attestations=attestations * (config.MAX_ATTESTATIONS // attestations_count + 1)
)
block = SerenityBeaconBlock(**sample_beacon_block_params).copy(
slot=current_slot, body=block_body
)
with pytest.raises(ValidationError):
process_attestations(state, block, config)
def test_demo(base_db, validator_count, keymap, pubkeys, fork_choice_scoring):
bls.use_noop_backend()
slots_per_epoch = 8
config = SERENITY_CONFIG._replace(
SLOTS_PER_EPOCH=slots_per_epoch,
GENESIS_EPOCH=slot_to_epoch(SERENITY_CONFIG.GENESIS_SLOT,
slots_per_epoch),
TARGET_COMMITTEE_SIZE=3,
SHARD_COUNT=2,
MIN_ATTESTATION_INCLUSION_DELAY=2,
)
override_vector_lengths(config)
fixture_sm_class = SerenityStateMachine.configure(
__name__='SerenityStateMachineForTesting',
config=config,
)
genesis_slot = config.GENESIS_SLOT
genesis_epoch = config.GENESIS_EPOCH
chaindb = BeaconChainDB(base_db, config)
attestation_pool = AttestationPool()
# TODO(ralexstokes) clean up how the cache is populated
for i in range(validator_count):
pubkeys[i]
genesis_state, genesis_block = create_mock_genesis(
num_validators=validator_count,
config=config,
keymap=keymap,
genesis_block_class=SerenityBeaconBlock,
)
for i in range(validator_count):
assert genesis_state.validators[i].is_active(genesis_slot)
chaindb.persist_block(genesis_block, SerenityBeaconBlock,
fork_choice_scoring)
chaindb.persist_state(genesis_state)
state = genesis_state
block = genesis_block
chain_length = 3 * config.SLOTS_PER_EPOCH
blocks = (block, )
attestations_map = {} # Dict[Slot, Sequence[Attestation]]
for current_slot in range(genesis_slot + 1,
genesis_slot + chain_length + 1):
if current_slot > genesis_slot + config.MIN_ATTESTATION_INCLUSION_DELAY:
attestations = attestations_map[
current_slot - config.MIN_ATTESTATION_INCLUSION_DELAY]
else:
attestations = ()
block = create_mock_block(
state=state,
config=config,
state_machine=fixture_sm_class(
chaindb,
attestation_pool,
blocks[-1].slot,
),
block_class=SerenityBeaconBlock,
parent_block=block,
keymap=keymap,
slot=current_slot,
attestations=attestations,
)
# Get state machine instance
sm = fixture_sm_class(
chaindb,
attestation_pool,
blocks[-1].slot,
)
state, _ = sm.import_block(block)
chaindb.persist_state(state)
chaindb.persist_block(block, SerenityBeaconBlock, fork_choice_scoring)
blocks += (block, )
# Mock attestations
attestation_slot = current_slot
attestations = create_mock_signed_attestations_at_slot(
state=state,
config=config,
state_machine=fixture_sm_class(
chaindb,
attestation_pool,
block.slot,
),
attestation_slot=attestation_slot,
beacon_block_root=block.signing_root,
keymap=keymap,
voted_attesters_ratio=1.0,
)
attestations_map[attestation_slot] = attestations
assert state.slot == chain_length + genesis_slot
# Justification assertions
assert state.current_justified_epoch == genesis_epoch
assert state.finalized_epoch == genesis_epoch
def test_demo(base_db, num_validators, config, keymap, fixture_sm_class):
genesis_slot = config.GENESIS_SLOT
genesis_epoch = config.GENESIS_EPOCH
chaindb = BeaconChainDB(base_db)
genesis_state, genesis_block = create_mock_genesis(
num_validators=num_validators,
config=config,
keymap=keymap,
genesis_block_class=SerenityBeaconBlock,
)
for i in range(num_validators):
assert genesis_state.validator_registry[i].is_active(genesis_slot)
chaindb.persist_block(genesis_block, SerenityBeaconBlock)
chaindb.persist_state(genesis_state)
state = genesis_state
block = genesis_block
chain_length = 3 * config.SLOTS_PER_EPOCH
blocks = (block, )
attestations_map = {} # Dict[Slot, Sequence[Attestation]]
for current_slot in range(genesis_slot + 1,
genesis_slot + chain_length + 1):
if current_slot > genesis_slot + config.MIN_ATTESTATION_INCLUSION_DELAY:
attestations = attestations_map[
current_slot - config.MIN_ATTESTATION_INCLUSION_DELAY]
else:
attestations = ()
block = create_mock_block(
state=state,
config=config,
state_machine=fixture_sm_class(
chaindb,
blocks[-1],
),
block_class=SerenityBeaconBlock,
parent_block=block,
keymap=keymap,
slot=current_slot,
attestations=attestations,
)
# Get state machine instance
sm = fixture_sm_class(
chaindb,
blocks[-1],
)
state, _ = sm.import_block(block)
chaindb.persist_state(state)
chaindb.persist_block(block, SerenityBeaconBlock)
blocks += (block, )
# Mock attestations
attestation_slot = current_slot
attestations = create_mock_signed_attestations_at_slot(
state=state,
config=config,
state_machine=fixture_sm_class(
chaindb,
block,
),
attestation_slot=attestation_slot,
beacon_block_root=block.signed_root,
keymap=keymap,
voted_attesters_ratio=1.0,
)
attestations_map[attestation_slot] = attestations
assert state.slot == chain_length + genesis_slot
assert isinstance(sm.block, SerenityBeaconBlock)
# Justification assertions
assert state.current_justified_epoch == 2 + genesis_epoch
assert state.finalized_epoch == 1 + genesis_epoch
def test_demo(base_db, validator_count, keymap, pubkeys, fork_choice_scoring):
bls.use_noop_backend()
config = MINIMAL_SERENITY_CONFIG
override_lengths(config)
fixture_sm_class = SerenityStateMachine.configure(
__name__="SerenityStateMachineForTesting", config=config)
genesis_slot = config.GENESIS_SLOT
genesis_epoch = config.GENESIS_EPOCH
chaindb = BeaconChainDB(base_db, config)
genesis_state, genesis_block = create_mock_genesis(
pubkeys=pubkeys[:validator_count],
config=config,
keymap=keymap,
genesis_block_class=SerenityBeaconBlock,
)
for i in range(validator_count):
assert genesis_state.validators[i].is_active(genesis_slot)
chaindb.persist_block(
SerenitySignedBeaconBlock.create(message=genesis_block),
SerenitySignedBeaconBlock,
fork_choice_scoring,
)
chaindb.persist_state(genesis_state)
state = genesis_state
block = SerenitySignedBeaconBlock.create(message=genesis_block)
chain_length = 4 * config.SLOTS_PER_EPOCH
blocks = (block, )
attestations_map = {} # Dict[Slot, Sequence[Attestation]]
for current_slot in range(genesis_slot + 1,
genesis_slot + chain_length + 1):
if current_slot > genesis_slot + config.MIN_ATTESTATION_INCLUSION_DELAY:
attestations = attestations_map[
current_slot - config.MIN_ATTESTATION_INCLUSION_DELAY]
else:
attestations = ()
block = create_mock_block(
state=state,
config=config,
state_machine=fixture_sm_class(chaindb),
signed_block_class=SerenitySignedBeaconBlock,
parent_block=block,
keymap=keymap,
slot=current_slot,
attestations=attestations,
)
# Get state machine instance
sm = fixture_sm_class(chaindb)
state, _ = sm.import_block(block, state)
chaindb.persist_state(state)
chaindb.persist_block(block, SerenitySignedBeaconBlock,
fork_choice_scoring)
blocks += (block, )
# Mock attestations
attestation_slot = current_slot
attestations = create_mock_signed_attestations_at_slot(
state=state,
config=config,
state_machine=fixture_sm_class(chaindb),
attestation_slot=attestation_slot,
beacon_block_root=block.signing_root,
keymap=keymap,
voted_attesters_ratio=1.0,
)
attestations_map[attestation_slot] = attestations
assert state.slot == chain_length + genesis_slot
# Justification assertions
# NOTE: why are the number `2` or `3` used in the checks below?
# Answer:
# "We do not check any justification and finality during epochs 0 or 1. We do check for
# justification and finality from epoch 2 onward."
# [epoch 0]------[epoch 1]------>
#
# "In epoch 2, we justify the current epoch. This epoch is in fact justified but we do not
# recognize it in the protocol due to an artifact of the construction of the genesis state
# (using the `zero` value for `Checkpoint` type)."
# [epoch 0]------[epoch 1]------[epoch 2]*------>
# []*: checkpoint justified
# []**: checkpoint finalized
#
# "In epoch 3, we have the previous justified checkpoint at the prior current justified
# checkpoint (so `GENESIS_EPOCH + 2`) and we justify this current epoch. we check finality here
# and see that we finalize the prior justified checkpoint at epoch 2."
# [epoch 0]------[epoch 1]------[epoch 2]**------[epoch 3]*------>
#
# "Given the way we handle epoch processing (i.e. process a given epoch at the start of
# the next epoch), we need to transition through `4 * SLOTS_PER_EPOCH` worth of slots to
# include the processing of epoch 3."
#
# source: https://github.com/ethereum/trinity/pull/1214#issuecomment-546184080
#
# epoch | prev_justified_checkpoint | cur_justified_checkpoint | finalized_checkpoint
# ------|---------------------------|--------------------------|---------------------
# 0 | 0 | 0 | 0
# 1 | 0 | 0 | 0
# 2 | 0 | 0 | 0
# 3 | 0 | 2 | 0
# 4 | 2 | 3 | 2
assert state.previous_justified_checkpoint.epoch == 2 + genesis_epoch
assert state.current_justified_checkpoint.epoch == 3 + genesis_epoch
assert state.finalized_checkpoint.epoch == 2 + genesis_epoch
def _mk_attestations_from(blocks, states, chain, config, keymap):
for block, state in zip(blocks, states):
sm = chain.get_state_machine(block.slot)
yield from create_mock_signed_attestations_at_slot(
state, config, sm, block.slot, block.message.hash_tree_root,
keymap)
def test_demo(base_db, keymap):
slots_per_epoch = 8
config = SERENITY_CONFIG._replace(
SLOTS_PER_EPOCH=slots_per_epoch,
GENESIS_EPOCH=slot_to_epoch(SERENITY_CONFIG.GENESIS_SLOT,
slots_per_epoch),
TARGET_COMMITTEE_SIZE=3,
SHARD_COUNT=2,
MIN_ATTESTATION_INCLUSION_DELAY=2,
)
fixture_sm_class = SerenityStateMachine.configure(
__name__='SerenityStateMachineForTesting',
config=config,
)
num_validators = 40
genesis_slot = config.GENESIS_SLOT
genesis_epoch = config.GENESIS_EPOCH
chaindb = BeaconChainDB(base_db, config)
genesis_state, genesis_block = create_mock_genesis(
num_validators=num_validators,
config=config,
keymap=keymap,
genesis_block_class=SerenityBeaconBlock,
)
for i in range(num_validators):
assert genesis_state.validator_registry[i].is_active(genesis_slot)
chaindb.persist_block(genesis_block, SerenityBeaconBlock)
chaindb.persist_state(genesis_state)
state = genesis_state
block = genesis_block
chain_length = 3 * config.SLOTS_PER_EPOCH
blocks = (block, )
attestations_map = {} # Dict[Slot, Sequence[Attestation]]
for current_slot in range(genesis_slot + 1,
genesis_slot + chain_length + 1):
if current_slot > genesis_slot + config.MIN_ATTESTATION_INCLUSION_DELAY:
attestations = attestations_map[
current_slot - config.MIN_ATTESTATION_INCLUSION_DELAY]
else:
attestations = ()
block = create_mock_block(
state=state,
config=config,
state_machine=fixture_sm_class(
chaindb,
blocks[-1],
),
block_class=SerenityBeaconBlock,
parent_block=block,
keymap=keymap,
slot=current_slot,
attestations=attestations,
)
# Get state machine instance
sm = fixture_sm_class(
chaindb,
blocks[-1],
)
state, _ = sm.import_block(block)
chaindb.persist_state(state)
chaindb.persist_block(block, SerenityBeaconBlock)
blocks += (block, )
# Mock attestations
attestation_slot = current_slot
attestations = create_mock_signed_attestations_at_slot(
state=state,
config=config,
state_machine=fixture_sm_class(
chaindb,
block,
),
attestation_slot=attestation_slot,
beacon_block_root=block.signing_root,
keymap=keymap,
voted_attesters_ratio=1.0,
)
attestations_map[attestation_slot] = attestations
assert state.slot == chain_length + genesis_slot
assert isinstance(sm.block, SerenityBeaconBlock)
# Justification assertions
assert state.current_justified_epoch == 2 + genesis_epoch
assert state.finalized_epoch == 1 + genesis_epoch
def test_demo(base_db,
num_validators,
config,
keymap,
fixture_sm_class):
chaindb = BeaconChainDB(base_db)
genesis_state, genesis_block = create_mock_genesis(
num_validators=num_validators,
config=config,
keymap=keymap,
genesis_block_class=SerenityBeaconBlock,
)
for i in range(num_validators):
assert genesis_state.validator_registry[i].is_active(0)
chaindb.persist_block(genesis_block, SerenityBeaconBlock)
chaindb.persist_state(genesis_state)
state = genesis_state
current_slot = 1
chain_length = 3 * config.EPOCH_LENGTH
attestations = ()
for current_slot in range(chain_length):
# two epochs
block = create_mock_block(
state=state,
config=config,
block_class=SerenityBeaconBlock,
parent_block=genesis_block,
keymap=keymap,
slot=current_slot,
attestations=attestations,
)
block = block.copy(
body=block.body.copy(
attestations=attestations,
)
)
# Get state machine instance
sm = fixture_sm_class(
chaindb,
block,
parent_block_class=SerenityBeaconBlock,
)
state, _ = sm.import_block(block)
# TODO: move to chain level?
block = block.copy(
state_root=state.root,
)
chaindb.persist_state(state)
chaindb.persist_block(block, SerenityBeaconBlock)
if current_slot > config.MIN_ATTESTATION_INCLUSION_DELAY:
attestation_slot = current_slot - config.MIN_ATTESTATION_INCLUSION_DELAY
attestations = create_mock_signed_attestations_at_slot(
state,
config,
attestation_slot,
keymap,
1.0,
)
else:
attestations = ()
assert state.slot == chain_length - 1
assert isinstance(sm.block, SerenityBeaconBlock)
