def test_end_block_return_validator_updates(b, init_chain_request):
app = App(b)
app.init_chain(init_chain_request)
begin_block = RequestBeginBlock()
app.begin_block(begin_block)
# generate a block containing a concluded validator election
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
new_validator = generate_validators([1])[0]
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
voter_keys = [v['private_key'] for v in validators]
election, votes = generate_election(b, ValidatorElection, public_key,
private_key, new_validator['election'],
voter_keys)
b.store_block(
Block(height=1, transactions=[election.id], app_hash='')._asdict())
b.store_bulk_transactions([election])
Election.process_block(b, 1, [election])
app.block_transactions = votes
resp = app.end_block(RequestEndBlock(height=2))
assert resp.validator_updates[0].power == new_validator['election'][
'power']
expected = bytes.fromhex(new_validator['election']['public_key']['value'])
assert expected == resp.validator_updates[0].pub_key.data
def test_chain_migration_election_show_shows_concluded(b):
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
voter_keys = [v['private_key'] for v in validators]
election, votes = generate_election(b,
ChainMigrationElection,
public_key, private_key,
{},
voter_keys)
assert not run_election_show(Namespace(election_id=election.id), b)
b.store_bulk_transactions([election])
Election.process_block(b, 1, [election])
assert run_election_show(Namespace(election_id=election.id), b) == \
'status=ongoing'
b.store_abci_chain(1, 'chain-X')
b.store_block(Block(height=1,
transactions=[v.id for v in votes],
app_hash='last_app_hash')._asdict())
Election.process_block(b, 2, votes)
assert run_election_show(Namespace(election_id=election.id), b) == \
f'''status=concluded
def test_chain_migration_election_show_shows_inconclusive(b):
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
voter_keys = [v['private_key'] for v in validators]
election, votes = generate_election(b, ChainMigrationElection, public_key,
private_key, {}, voter_keys)
assert not run_election_show(Namespace(election_id=election.id), b)
Election.process_block(b, 1, [election])
b.store_bulk_transactions([election])
assert run_election_show(Namespace(election_id=election.id), b) == \
'status=ongoing'
b.store_block(Block(height=1, transactions=[], app_hash='')._asdict())
b.store_validator_set(2, [v['storage'] for v in validators])
assert run_election_show(Namespace(election_id=election.id), b) == \
'status=ongoing'
b.store_block(Block(height=2, transactions=[], app_hash='')._asdict())
# TODO insert yet another block here when upgrading to Tendermint 0.22.4.
assert run_election_show(Namespace(election_id=election.id), b) == \
'status=inconclusive'
def test_chain_migration_election_show_shows_concluded(b):
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
voter_keys = [v['private_key'] for v in validators]
election, votes = generate_election(b, ChainMigrationElection, public_key,
private_key, {}, voter_keys)
assert not run_election_show(Namespace(election_id=election.id), b)
b.store_bulk_transactions([election])
Election.process_block(b, 1, [election])
assert run_election_show(Namespace(election_id=election.id), b) == \
'status=ongoing'
b.store_abci_chain(1, 'chain-X')
b.store_block(
Block(height=1,
transactions=[v.id for v in votes],
app_hash='last_app_hash')._asdict())
Election.process_block(b, 2, votes)
assert run_election_show(Namespace(election_id=election.id), b) == \
f'''status=concluded
def test_chain_migration_election_show_shows_inconclusive(b):
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
voter_keys = [v['private_key'] for v in validators]
election, votes = generate_election(b,
ChainMigrationElection,
public_key, private_key,
{},
voter_keys)
assert not run_election_show(Namespace(election_id=election.id), b)
Election.process_block(b, 1, [election])
b.store_bulk_transactions([election])
assert run_election_show(Namespace(election_id=election.id), b) == \
'status=ongoing'
b.store_block(Block(height=1, transactions=[], app_hash='')._asdict())
b.store_validator_set(2, [v['storage'] for v in validators])
assert run_election_show(Namespace(election_id=election.id), b) == \
'status=ongoing'
b.store_block(Block(height=2, transactions=[], app_hash='')._asdict())
# TODO insert yet another block here when upgrading to Tendermint 0.22.4.
assert run_election_show(Namespace(election_id=election.id), b) == \
'status=inconclusive'
def test_end_block_return_validator_updates(b, init_chain_request):
app = App(b)
app.init_chain(init_chain_request)
begin_block = RequestBeginBlock()
app.begin_block(begin_block)
# generate a block containing a concluded validator election
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
new_validator = generate_validators([1])[0]
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
voter_keys = [v['private_key'] for v in validators]
election, votes = generate_election(b,
ValidatorElection,
public_key, private_key,
new_validator['election'],
voter_keys)
b.store_block(Block(height=1, transactions=[election.id],
app_hash='')._asdict())
b.store_bulk_transactions([election])
Election.process_block(b, 1, [election])
app.block_transactions = votes
resp = app.end_block(RequestEndBlock(height=2))
assert resp.validator_updates[0].power == new_validator['election']['power']
expected = bytes.fromhex(new_validator['election']['public_key']['value'])
assert expected == resp.validator_updates[0].pub_key.data
def test_process_block_approves_after_pending_validator_update(b):
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
new_validator = generate_validators([1])[0]
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
voter_keys = [v['private_key'] for v in validators]
election, votes = generate_election(b,
ValidatorElection,
public_key, private_key,
new_validator['election'],
voter_keys)
txs = [election]
total_votes = votes
another_validator = generate_validators([1])[0]
election, votes = generate_election(b,
ValidatorElection,
public_key, private_key,
another_validator['election'],
voter_keys)
txs += [election]
total_votes += votes
election, votes = generate_election(b,
ChainMigrationElection,
public_key, private_key,
{},
voter_keys)
txs += [election]
total_votes += votes
b.store_abci_chain(1, 'chain-X')
Election.process_block(b, 1, txs)
b.store_block(Block(height=1,
transactions=[tx.id for tx in txs],
app_hash='')._asdict())
b.store_bulk_transactions(txs)
Election.process_block(b, 2, total_votes)
validators = b.get_validators()
assert len(validators) == 5
assert new_validator['storage'] in validators
assert another_validator['storage'] not in validators
assert b.get_election(txs[0].id)['is_concluded']
assert not b.get_election(txs[1].id)['is_concluded']
assert b.get_election(txs[2].id)['is_concluded']
assert b.get_latest_abci_chain() == {'height': 2,
'chain_id': 'chain-X-migrated-at-height-1',
'is_synced': False}
def test_get_validator_update(b, node_keys, node_key, ed25519_node_keys):
reset_validator_set(b, node_keys, 1)
power = 1
public_key = '9B3119650DF82B9A5D8A12E38953EA47475C09F0C48A4E6A0ECE182944B24403'
public_key64 = public_key_to_base64(public_key)
new_validator = {'public_key': {'value': public_key, 'type': 'ed25519-base16'},
'node_id': 'some_node_id',
'power': power}
voters = ValidatorElection.recipients(b)
election = ValidatorElection.generate([node_key.public_key],
voters,
new_validator).sign([node_key.private_key])
# store election
b.store_bulk_transactions([election])
tx_vote0 = gen_vote(election, 0, ed25519_node_keys)
tx_vote1 = gen_vote(election, 1, ed25519_node_keys)
tx_vote2 = gen_vote(election, 2, ed25519_node_keys)
assert not election.has_concluded(b, [tx_vote0])
assert not election.has_concluded(b, [tx_vote0, tx_vote1])
assert election.has_concluded(b, [tx_vote0, tx_vote1, tx_vote2])
assert Election.process_block(b, 4, [tx_vote0]) == []
assert Election.process_block(b, 4, [tx_vote0, tx_vote1]) == []
update = Election.process_block(b, 4, [tx_vote0, tx_vote1, tx_vote2])
assert len(update) == 1
update_public_key = codecs.encode(update[0].pub_key.data, 'base64').decode().rstrip('\n')
assert update_public_key == public_key64
# remove validator
power = 0
new_validator = {'public_key': {'value': public_key, 'type': 'ed25519-base16'},
'node_id': 'some_node_id',
'power': power}
voters = ValidatorElection.recipients(b)
election = ValidatorElection.generate([node_key.public_key],
voters,
new_validator).sign([node_key.private_key])
# store election
b.store_bulk_transactions([election])
tx_vote0 = gen_vote(election, 0, ed25519_node_keys)
tx_vote1 = gen_vote(election, 1, ed25519_node_keys)
tx_vote2 = gen_vote(election, 2, ed25519_node_keys)
b.store_bulk_transactions([tx_vote0, tx_vote1])
update = Election.process_block(b, 9, [tx_vote2])
assert len(update) == 1
update_public_key = codecs.encode(update[0].pub_key.data, 'base64').decode().rstrip('\n')
assert update_public_key == public_key64
# assert that the public key is not a part of the current validator set
for v in b.get_validators(10):
assert not v['public_key']['value'] == public_key64
def test_process_block_approves_after_pending_validator_update(b):
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
new_validator = generate_validators([1])[0]
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
voter_keys = [v['private_key'] for v in validators]
election, votes = generate_election(b, ValidatorElection, public_key,
private_key, new_validator['election'],
voter_keys)
txs = [election]
total_votes = votes
another_validator = generate_validators([1])[0]
election, votes = generate_election(b, ValidatorElection, public_key,
private_key,
another_validator['election'],
voter_keys)
txs += [election]
total_votes += votes
election, votes = generate_election(b, ChainMigrationElection, public_key,
private_key, {}, voter_keys)
txs += [election]
total_votes += votes
b.store_abci_chain(1, 'chain-X')
Election.process_block(b, 1, txs)
b.store_block(
Block(height=1, transactions=[tx.id for tx in txs],
app_hash='')._asdict())
b.store_bulk_transactions(txs)
Election.process_block(b, 2, total_votes)
validators = b.get_validators()
assert len(validators) == 5
assert new_validator['storage'] in validators
assert another_validator['storage'] not in validators
assert b.get_election(txs[0].id)['is_concluded']
assert not b.get_election(txs[1].id)['is_concluded']
assert b.get_election(txs[2].id)['is_concluded']
assert b.get_latest_abci_chain() == {
'height': 2,
'chain_id': 'chain-X-migrated-at-height-1',
'is_synced': False
}
def rollback(b):
pre_commit = b.get_pre_commit_state()
if pre_commit is None:
# the pre_commit record is first stored in the first `end_block`
return
latest_block = b.get_latest_block()
if latest_block is None:
logger.error('Found precommit state but no blocks!')
sys.exit(1)
# NOTE: the pre-commit state is always at most 1 block ahead of the commited state
if latest_block['height'] < pre_commit['height']:
Election.rollback(b, pre_commit['height'], pre_commit['transactions'])
b.delete_transactions(pre_commit['transactions'])
def end_block(self, request_end_block):
"""Calculate block hash using transaction ids and previous block
hash to be stored in the next block.
Args:
height (int): new height of the chain.
"""
self.abort_if_abci_chain_is_not_synced()
chain_shift = 0 if self.chain is None else self.chain['height']
height = request_end_block.height + chain_shift
self.new_height = height
block_txn_hash = calculate_hash(self.block_txn_ids)
block = self.bigchaindb.get_latest_block()
if self.block_txn_ids:
self.block_txn_hash = calculate_hash(
[block['app_hash'], block_txn_hash])
else:
self.block_txn_hash = block['app_hash']
validator_update = Election.process_block(self.bigchaindb,
self.new_height,
self.block_transactions)
# Store pre-commit state to recover in case there is a crash during `commit`
pre_commit_state = PreCommitState(commit_id=PRE_COMMIT_ID,
height=self.new_height,
transactions=self.block_txn_ids)
logger.debug('Updating PreCommitState: %s', self.new_height)
self.bigchaindb.store_pre_commit_state(pre_commit_state._asdict())
return ResponseEndBlock(validator_updates=validator_update)
def end_block(self, request_end_block):
"""Calculate block hash using transaction ids and previous block
hash to be stored in the next block.
Args:
height (int): new height of the chain.
"""
self.abort_if_abci_chain_is_not_synced()
chain_shift = 0 if self.chain is None else self.chain['height']
height = request_end_block.height + chain_shift
self.new_height = height
# store pre-commit state to recover in case there is a crash during
# `end_block` or `commit`
logger.debug(f'Updating pre-commit state: {self.new_height}')
pre_commit_state = dict(height=self.new_height,
transactions=self.block_txn_ids)
self.bigchaindb.store_pre_commit_state(pre_commit_state)
block_txn_hash = calculate_hash(self.block_txn_ids)
block = self.bigchaindb.get_latest_block()
if self.block_txn_ids:
self.block_txn_hash = calculate_hash([block['app_hash'], block_txn_hash])
else:
self.block_txn_hash = block['app_hash']
validator_update = Election.process_block(self.bigchaindb,
self.new_height,
self.block_transactions)
return ResponseEndBlock(validator_updates=validator_update)
def gen_vote(election, i, ed25519_node_keys):
(input_i, votes_i, key_i) = to_inputs(election, i, ed25519_node_keys)
election_pub_key = Election.to_public_key(election.id)
return Vote.generate([input_i],
[([election_pub_key], votes_i)],
election_id=election.id)\
.sign([key_i.private_key])
def rollback(b):
pre_commit = b.get_pre_commit_state()
if pre_commit is None:
# the pre_commit record is first stored in the first `end_block`
return
latest_block = b.get_latest_block()
if latest_block is None:
logger.error('Found precommit state but no blocks!')
sys.exit(1)
# NOTE: the pre-commit state is always at most 1 block ahead of the commited state
if latest_block['height'] < pre_commit['height']:
Election.rollback(b, pre_commit['height'], pre_commit['transactions'])
b.delete_transactions(pre_commit['transactions'])
def test_approved_elections_concludes_all_elections(b):
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
new_validator = generate_validators([1])[0]
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
election, votes = generate_election(b,
ValidatorElection,
public_key, private_key,
new_validator['election'])
txs = [election]
total_votes = votes
election, votes = generate_election(b,
ChainMigrationElection,
public_key, private_key,
{})
txs += [election]
total_votes += votes
b.store_abci_chain(1, 'chain-X')
b.store_block(Block(height=1,
transactions=[tx.id for tx in txs],
app_hash='')._asdict())
b.store_bulk_transactions(txs)
Election.approved_elections(b, 1, total_votes)
validators = b.get_validators()
assert len(validators) == 5
assert new_validator['storage'] in validators
chain = b.get_latest_abci_chain()
assert chain
assert chain == {
'height': 2,
'is_synced': False,
'chain_id': 'chain-X-migrated-at-height-1',
}
for tx in txs:
election = b.get_election(tx.id)
assert election
def test_process_block_applies_only_one_migration(b):
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
voter_keys = [v['private_key'] for v in validators]
election, votes = generate_election(b,
ChainMigrationElection,
public_key, private_key,
{},
voter_keys)
txs = [election]
total_votes = votes
election, votes = generate_election(b,
ChainMigrationElection,
public_key, private_key,
{},
voter_keys)
txs += [election]
total_votes += votes
b.store_abci_chain(1, 'chain-X')
Election.process_block(b, 1, txs)
b.store_block(Block(height=1,
transactions=[tx.id for tx in txs],
app_hash='')._asdict())
b.store_bulk_transactions(txs)
Election.process_block(b, 1, total_votes)
chain = b.get_latest_abci_chain()
assert chain
assert chain == {
'height': 2,
'is_synced': False,
'chain_id': 'chain-X-migrated-at-height-1',
}
assert b.get_election(txs[0].id)['is_concluded']
assert not b.get_election(txs[1].id)['is_concluded']
def test_process_block_approves_only_one_validator_update(b):
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
new_validator = generate_validators([1])[0]
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
voter_keys = [v['private_key'] for v in validators]
election, votes = generate_election(b,
ValidatorElection,
public_key, private_key,
new_validator['election'],
voter_keys)
txs = [election]
total_votes = votes
another_validator = generate_validators([1])[0]
election, votes = generate_election(b,
ValidatorElection,
public_key, private_key,
another_validator['election'],
voter_keys)
txs += [election]
total_votes += votes
Election.process_block(b, 1, txs)
b.store_block(Block(height=1,
transactions=[tx.id for tx in txs],
app_hash='')._asdict())
b.store_bulk_transactions(txs)
Election.process_block(b, 2, total_votes)
validators = b.get_validators()
assert len(validators) == 5
assert new_validator['storage'] in validators
assert another_validator['storage'] not in validators
assert b.get_election(txs[0].id)['is_concluded']
assert not b.get_election(txs[1].id)['is_concluded']
def generate_election(b, cls, public_key, private_key, asset_data):
voters = cls.recipients(b)
election = cls.generate([public_key], voters, asset_data,
None).sign([private_key])
votes = [
Vote.generate([election.to_inputs()[i]],
[([Election.to_public_key(election.id)], power)],
election.id) for i, (_, power) in enumerate(voters)
]
return election, votes
def test_process_block_approves_only_one_validator_update(b):
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
new_validator = generate_validators([1])[0]
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
voter_keys = [v['private_key'] for v in validators]
election, votes = generate_election(b, ValidatorElection, public_key,
private_key, new_validator['election'],
voter_keys)
txs = [election]
total_votes = votes
another_validator = generate_validators([1])[0]
election, votes = generate_election(b, ValidatorElection, public_key,
private_key,
another_validator['election'],
voter_keys)
txs += [election]
total_votes += votes
Election.process_block(b, 1, txs)
b.store_block(
Block(height=1, transactions=[tx.id for tx in txs],
app_hash='')._asdict())
b.store_bulk_transactions(txs)
Election.process_block(b, 2, total_votes)
validators = b.get_validators()
assert len(validators) == 5
assert new_validator['storage'] in validators
assert another_validator['storage'] not in validators
assert b.get_election(txs[0].id)['is_concluded']
assert not b.get_election(txs[1].id)['is_concluded']
def test_process_block_applies_only_one_migration(b):
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
election, votes = generate_election(b,
ChainMigrationElection,
public_key, private_key,
{})
txs = [election]
total_votes = votes
election, votes = generate_election(b,
ChainMigrationElection,
public_key, private_key,
{})
txs += [election]
total_votes += votes
b.store_abci_chain(1, 'chain-X')
Election.process_block(b, 1, txs)
b.store_block(Block(height=1,
transactions=[tx.id for tx in txs],
app_hash='')._asdict())
b.store_bulk_transactions(txs)
Election.process_block(b, 1, total_votes)
chain = b.get_latest_abci_chain()
assert chain
assert chain == {
'height': 2,
'is_synced': False,
'chain_id': 'chain-X-migrated-at-height-1',
}
assert b.get_election(txs[0].id)['is_concluded']
assert not b.get_election(txs[1].id)['is_concluded']
def test_process_block_does_not_approve_after_validator_update(b):
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
new_validator = generate_validators([1])[0]
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
voter_keys = [v['private_key'] for v in validators]
election, votes = generate_election(b, ValidatorElection, public_key,
private_key, new_validator['election'],
voter_keys)
txs = [election]
total_votes = votes
b.store_block(
Block(height=1, transactions=[tx.id for tx in txs],
app_hash='')._asdict())
Election.process_block(b, 1, txs)
b.store_bulk_transactions(txs)
second_election, second_votes = generate_election(b,
ChainMigrationElection,
public_key, private_key,
{}, voter_keys)
Election.process_block(b, 2, total_votes + [second_election])
b.store_block(
Block(height=2,
transactions=[v.id for v in total_votes + [second_election]],
app_hash='')._asdict())
b.store_abci_chain(1, 'chain-X')
Election.process_block(b, 3, second_votes)
assert not b.get_election(second_election.id)['is_concluded']
assert b.get_latest_abci_chain() == {
'height': 1,
'chain_id': 'chain-X',
'is_synced': True
}
def test_process_block_does_not_approve_after_validator_update(b):
validators = generate_validators([1] * 4)
b.store_validator_set(1, [v['storage'] for v in validators])
new_validator = generate_validators([1])[0]
public_key = validators[0]['public_key']
private_key = validators[0]['private_key']
voter_keys = [v['private_key'] for v in validators]
election, votes = generate_election(b,
ValidatorElection,
public_key, private_key,
new_validator['election'],
voter_keys)
txs = [election]
total_votes = votes
b.store_block(Block(height=1,
transactions=[tx.id for tx in txs],
app_hash='')._asdict())
Election.process_block(b, 1, txs)
b.store_bulk_transactions(txs)
second_election, second_votes = generate_election(b,
ChainMigrationElection,
public_key, private_key,
{},
voter_keys)
Election.process_block(b, 2, total_votes + [second_election])
b.store_block(Block(height=2,
transactions=[v.id for v in total_votes + [second_election]],
app_hash='')._asdict())
b.store_abci_chain(1, 'chain-X')
Election.process_block(b, 3, second_votes)
assert not b.get_election(second_election.id)['is_concluded']
assert b.get_latest_abci_chain() == {'height': 1,
'chain_id': 'chain-X',
'is_synced': True}
def test_approved_elections_gracefully_handles_empty_block(b):
Election.approved_elections(b, 1, [])
def test_process_block_gracefully_handles_empty_block(b):
Election.process_block(b, 1, [])
def test_get_validator_update(b, node_keys, node_key, ed25519_node_keys):
reset_validator_set(b, node_keys, 1)
power = 1
public_key = '9B3119650DF82B9A5D8A12E38953EA47475C09F0C48A4E6A0ECE182944B24403'
public_key64 = public_key_to_base64(public_key)
new_validator = {
'public_key': {
'value': public_key,
'type': 'ed25519-base16'
},
'node_id': 'some_node_id',
'power': power
}
voters = ValidatorElection.recipients(b)
election = ValidatorElection.generate([node_key.public_key], voters,
new_validator).sign(
[node_key.private_key])
# store election
b.store_bulk_transactions([election])
tx_vote0 = gen_vote(election, 0, ed25519_node_keys)
tx_vote1 = gen_vote(election, 1, ed25519_node_keys)
tx_vote2 = gen_vote(election, 2, ed25519_node_keys)
assert not election.has_concluded(b, [tx_vote0])
assert not election.has_concluded(b, [tx_vote0, tx_vote1])
assert election.has_concluded(b, [tx_vote0, tx_vote1, tx_vote2])
assert Election.process_block(b, 4, [tx_vote0]) == []
assert Election.process_block(b, 4, [tx_vote0, tx_vote1]) == []
update = Election.process_block(b, 4, [tx_vote0, tx_vote1, tx_vote2])
assert len(update) == 1
update_public_key = codecs.encode(update[0].pub_key.data,
'base64').decode().rstrip('\n')
assert update_public_key == public_key64
# remove validator
power = 0
new_validator = {
'public_key': {
'value': public_key,
'type': 'ed25519-base16'
},
'node_id': 'some_node_id',
'power': power
}
voters = ValidatorElection.recipients(b)
election = ValidatorElection.generate([node_key.public_key], voters,
new_validator).sign(
[node_key.private_key])
# store election
b.store_bulk_transactions([election])
tx_vote0 = gen_vote(election, 0, ed25519_node_keys)
tx_vote1 = gen_vote(election, 1, ed25519_node_keys)
tx_vote2 = gen_vote(election, 2, ed25519_node_keys)
b.store_bulk_transactions([tx_vote0, tx_vote1])
update = Election.process_block(b, 9, [tx_vote2])
assert len(update) == 1
update_public_key = codecs.encode(update[0].pub_key.data,
'base64').decode().rstrip('\n')
assert update_public_key == public_key64
# assert that the public key is not a part of the current validator set
for v in b.get_validators(10):
assert not v['public_key']['value'] == public_key64
def test_process_block_gracefully_handles_empty_block(b):
Election.process_block(b, 1, [])