def test_voter_chains_blocks_with_the_previous_ones(self, b):
b.create_genesis_block()
block_1 = b.create_block([])
b.write_block(block_1, durability='hard')
block_2 = b.create_block([])
b.write_block(block_2, durability='hard')
q_new_block = mp.Queue()
voter = Voter(q_new_block)
voter.start()
time.sleep(1)
voter.kill()
# retrive blocks from bigchain
blocks = list(r.table('bigchain')
.order_by(r.asc((r.row['block']['timestamp'])))
.run(b.conn))
assert blocks[0]['block_number'] == 0
assert blocks[1]['block_number'] == 1
assert blocks[2]['block_number'] == 2
# we don't vote on the genesis block right now
# assert blocks[0]['votes'][0]['vote']['voting_for_block'] == genesis['id']
assert blocks[1]['votes'][0]['vote']['voting_for_block'] == block_1['id']
assert blocks[2]['votes'][0]['vote']['voting_for_block'] == block_2['id']
def test_voter_chains_blocks_with_the_previous_ones(self, b):
b.create_genesis_block()
block_1 = b.create_block([])
b.write_block(block_1, durability='hard')
block_2 = b.create_block([])
b.write_block(block_2, durability='hard')
q_new_block = mp.Queue()
voter = Voter(q_new_block)
voter.start()
time.sleep(1)
voter.kill()
# retrive blocks from bigchain
blocks = list(r.table('bigchain')
.order_by(r.asc((r.row['block']['timestamp'])))
.run(b.conn))
assert blocks[0]['block_number'] == 0
assert blocks[1]['block_number'] == 1
assert blocks[2]['block_number'] == 2
# we don't vote on the genesis block right now
# assert blocks[0]['votes'][0]['vote']['voting_for_block'] == genesis['id']
assert blocks[1]['votes'][0]['vote']['voting_for_block'] == block_1['id']
assert blocks[2]['votes'][0]['vote']['voting_for_block'] == block_2['id']
def test_valid_block_voting(self, b):
# create queue and voter
q_new_block = mp.Queue()
voter = Voter(q_new_block)
genesis = b.create_genesis_block()
# create valid block
block = b.create_block([])
# assert block is valid
assert b.is_valid_block(block)
b.write_block(block, durability='hard')
# insert into queue
# FIXME: we disable this because the voter can currently vote more than one time for a block
# q_new_block.put(block)
# vote
voter.start()
# wait for vote to be written
time.sleep(1)
voter.kill()
# retrive block from bigchain
bigchain_block = r.table('bigchain').get(block['id']).run(b.conn)
# validate vote
assert len(bigchain_block['votes']) == 1
vote = bigchain_block['votes'][0]
assert vote['vote']['voting_for_block'] == block['id']
assert vote['vote']['previous_block'] == genesis['id']
assert vote['vote']['is_block_valid'] is True
assert vote['vote']['invalid_reason'] is None
assert vote['node_pubkey'] == b.me
assert PublicKey(b.me).verify(b.serialize(vote['vote']), vote['signature']) is True
def test_valid_block_voting(self, b):
q_new_block = mp.Queue()
genesis = b.create_genesis_block()
# create valid block
block = b.create_block([])
# assert block is valid
assert b.is_valid_block(block)
b.write_block(block, durability='hard')
# create queue and voter
voter = Voter(q_new_block)
# vote
voter.start()
# wait for vote to be written
time.sleep(1)
voter.kill()
# retrive block from bigchain
blocks = list(r.table('bigchain')
.order_by(r.asc((r.row['block']['timestamp'])))
.run(b.conn))
# validate vote
assert len(blocks[1]['votes']) == 1
vote = blocks[1]['votes'][0]
assert vote['vote']['voting_for_block'] == block['id']
assert vote['vote']['previous_block'] == genesis['id']
assert vote['vote']['is_block_valid'] is True
assert vote['vote']['invalid_reason'] is None
assert vote['node_pubkey'] == b.me
assert crypto.VerifyingKey(b.me).verify(util.serialize(vote['vote']), vote['signature']) is True
def test_valid_block_voting(self, b):
# create queue and voter
q_new_block = mp.Queue()
voter = Voter(q_new_block)
genesis = b.create_genesis_block()
# create valid block
block = b.create_block([])
# assert block is valid
assert b.is_valid_block(block)
b.write_block(block, durability='hard')
# insert into queue
# FIXME: we disable this because the voter can currently vote more than one time for a block
# q_new_block.put(block)
# vote
voter.start()
# wait for vote to be written
time.sleep(1)
voter.kill()
# retrive block from bigchain
bigchain_block = r.table('bigchain').get(block['id']).run(b.conn)
# validate vote
assert len(bigchain_block['votes']) == 1
vote = bigchain_block['votes'][0]
assert vote['vote']['voting_for_block'] == block['id']
assert vote['vote']['previous_block'] == genesis['id']
assert vote['vote']['is_block_valid'] == True
assert vote['vote']['invalid_reason'] == None
assert vote['node_pubkey'] == b.me
assert PublicKey(b.me).verify(b.serialize(vote['vote']), vote['signature']) == True
def test_valid_block_voting(self, b):
q_new_block = mp.Queue()
genesis = b.create_genesis_block()
# create valid block
block = b.create_block([])
# assert block is valid
assert b.is_valid_block(block)
b.write_block(block, durability='hard')
# create queue and voter
voter = Voter(q_new_block)
# vote
voter.start()
# wait for vote to be written
time.sleep(1)
voter.kill()
# retrive block from bigchain
blocks = list(r.table('bigchain')
.order_by(r.asc((r.row['block']['timestamp'])))
.run(b.conn))
# validate vote
assert len(blocks[1]['votes']) == 1
vote = blocks[1]['votes'][0]
assert vote['vote']['voting_for_block'] == block['id']
assert vote['vote']['previous_block'] == genesis['id']
assert vote['vote']['is_block_valid'] is True
assert vote['vote']['invalid_reason'] is None
assert vote['node_pubkey'] == b.me
assert PublicKey(b.me).verify(util.serialize(vote['vote']), vote['signature']) is True
def test_invalid_block_voting(self, b, user_public_key):
# create queue and voter
q_new_block = mp.Queue()
voter = Voter(q_new_block)
# create transaction
transaction = b.create_transaction(b.me, user_public_key, None,
'CREATE')
transaction_signed = b.sign_transaction(transaction, b.me_private)
genesis = b.create_genesis_block()
# create invalid block
block = b.create_block([transaction_signed])
# change transaction id to make it invalid
block['block']['transactions'][0]['id'] = 'abc'
assert b.is_valid_block(block) is False
b.write_block(block, durability='hard')
# insert into queue
# FIXME: we disable this because the voter can currently vote more than one time for a block
# q_new_block.put(block)
# vote
voter.start()
# wait for the vote to be written
time.sleep(1)
voter.kill()
# retrive block from bigchain
bigchain_block = r.table('bigchain').get(block['id']).run(b.conn)
# validate vote
assert len(bigchain_block['votes']) == 1
vote = bigchain_block['votes'][0]
assert vote['vote']['voting_for_block'] == block['id']
assert vote['vote']['previous_block'] == genesis['id']
assert vote['vote']['is_block_valid'] is False
assert vote['vote']['invalid_reason'] is None
assert vote['node_pubkey'] == b.me
assert PublicKey(b.me).verify(util.serialize(vote['vote']),
vote['signature']) is True
def test_invalid_block_voting(self, b):
# create queue and voter
q_new_block = mp.Queue()
voter = Voter(q_new_block)
# create transaction
transaction = b.create_transaction(b.me, USER_PUBLIC_KEY, None, 'CREATE')
transaction_signed = b.sign_transaction(transaction, b.me_private)
genesis = b.create_genesis_block()
# create invalid block
block = b.create_block([transaction_signed])
# change transaction id to make it invalid
block['block']['transactions'][0]['id'] = 'abc'
assert b.is_valid_block(block) == False
b.write_block(block, durability='hard')
# insert into queue
# FIXME: we disable this because the voter can currently vote more than one time for a block
# q_new_block.put(block)
# vote
voter.start()
# wait for the vote to be written
time.sleep(1)
voter.kill()
# retrive block from bigchain
bigchain_block = r.table('bigchain').get(block['id']).run(b.conn)
# validate vote
assert len(bigchain_block['votes']) == 1
vote = bigchain_block['votes'][0]
assert vote['vote']['voting_for_block'] == block['id']
assert vote['vote']['previous_block'] == genesis['id']
assert vote['vote']['is_block_valid'] == False
assert vote['vote']['invalid_reason'] == None
assert vote['node_pubkey'] == b.me
assert PublicKey(b.me).verify(b.serialize(vote['vote']), vote['signature']) == True
def test_valid_block_voting_with_create_transaction(self, b):
q_new_block = mp.Queue()
genesis = b.create_genesis_block()
# create a `CREATE` transaction
test_user_priv, test_user_pub = crypto.generate_key_pair()
tx = b.create_transaction(b.me, test_user_pub, None, 'CREATE')
tx_signed = b.sign_transaction(tx, b.me_private)
assert b.is_valid_transaction(tx_signed)
# create valid block
block = b.create_block([tx_signed])
# assert block is valid
assert b.is_valid_block(block)
b.write_block(block, durability='hard')
# create queue and voter
voter = Voter(q_new_block)
# vote
voter.start()
# wait for vote to be written
time.sleep(1)
voter.kill()
# retrive block from bigchain
blocks = list(r.table('bigchain')
.order_by(r.asc((r.row['block']['timestamp'])))
.run(b.conn))
# validate vote
assert len(blocks[1]['votes']) == 1
vote = blocks[1]['votes'][0]
assert vote['vote']['voting_for_block'] == block['id']
assert vote['vote']['previous_block'] == genesis['id']
assert vote['vote']['is_block_valid'] is True
assert vote['vote']['invalid_reason'] is None
assert vote['node_pubkey'] == b.me
assert crypto.VerifyingKey(b.me).verify(util.serialize(vote['vote']), vote['signature']) is True
def test_invalid_block_voting(self, b):
# create queue and voter
q_new_block = mp.Queue()
voter = Voter(q_new_block)
# create transaction
transaction = b.create_transaction(b.me, USER_PUBLIC_KEY, None,
'CREATE')
transaction_signed = b.sign_transaction(transaction, b.me_private)
genesis = b.create_genesis_block()
# create invalid block
block = b.create_block([transaction_signed])
# change transaction id to make it invalid
block['block']['transactions'][0]['id'] = 'abc'
assert not b.is_valid_block(block)
b.write_block(block, durability='hard')
# vote
voter.start()
time.sleep(1)
voter.kill()
# retrive block from bigchain
blocks = list(
r.table('bigchain').order_by(r.asc(
(r.row['block']['timestamp']))).run(b.conn))
# validate vote
assert len(blocks[1]['votes']) == 1
vote = blocks[1]['votes'][0]
assert vote['vote']['voting_for_block'] == block['id']
assert vote['vote']['previous_block'] == genesis['id']
assert vote['vote']['is_block_valid'] == False
assert vote['vote']['invalid_reason'] == None
assert vote['node_pubkey'] == b.me
assert PublicKey(b.me).verify(b.serialize(vote['vote']),
vote['signature']) == True
def test_invalid_block_voting(self, b):
# create queue and voter
q_new_block = mp.Queue()
voter = Voter(q_new_block)
# create transaction
transaction = b.create_transaction(b.me, USER_PUBLIC_KEY, None, 'CREATE')
transaction_signed = b.sign_transaction(transaction, b.me_private)
genesis = b.create_genesis_block()
# create invalid block
block = b.create_block([transaction_signed])
# change transaction id to make it invalid
block['block']['transactions'][0]['id'] = 'abc'
assert not b.is_valid_block(block)
b.write_block(block, durability='hard')
# vote
voter.start()
time.sleep(1)
voter.kill()
# retrive block from bigchain
blocks = list(r.table('bigchain')
.order_by(r.asc((r.row['block']['timestamp'])))
.run(b.conn))
# validate vote
assert len(blocks[1]['votes']) == 1
vote = blocks[1]['votes'][0]
assert vote['vote']['voting_for_block'] == block['id']
assert vote['vote']['previous_block'] == genesis['id']
assert vote['vote']['is_block_valid'] == False
assert vote['vote']['invalid_reason'] == None
assert vote['node_pubkey'] == b.me
assert PublicKey(b.me).verify(b.serialize(vote['vote']), vote['signature']) == True
def test_voter_considers_unvoted_blocks_when_single_node(self, b):
# simulate a voter going donw in a single node environment
b.create_genesis_block()
# insert blocks in the database while the voter process is not listening
# (these blocks won't appear in the changefeed)
block_1 = b.create_block([])
b.write_block(block_1, durability='hard')
block_2 = b.create_block([])
b.write_block(block_2, durability='hard')
# voter is back online, we simulate that by creating a queue and a Voter instance
q_new_block = mp.Queue()
voter = Voter(q_new_block)
# create a new block that will appear in the changefeed
block_3 = b.create_block([])
b.write_block(block_3, durability='hard')
# put the last block in the queue
q_new_block.put(block_3)
# vote
voter.start()
time.sleep(1)
voter.kill()
# retrive blocks from bigchain
blocks = list(
r.table('bigchain').order_by(r.asc(
(r.row['block']['timestamp']))).run(b.conn))
# FIXME: remove genesis block, we don't vote on it (might change in the future)
blocks.pop(0)
assert all(block['votes'][0]['node_pubkey'] == b.me
for block in blocks)
def test_voter_considers_unvoted_blocks_when_single_node(self, b):
# simulate a voter going donw in a single node environment
b.create_genesis_block()
# insert blocks in the database while the voter process is not listening
# (these blocks won't appear in the changefeed)
block_1 = b.create_block([])
b.write_block(block_1, durability='hard')
block_2 = b.create_block([])
b.write_block(block_2, durability='hard')
# voter is back online, we simulate that by creating a queue and a Voter instance
q_new_block = mp.Queue()
voter = Voter(q_new_block)
# create a new block that will appear in the changefeed
block_3 = b.create_block([])
b.write_block(block_3, durability='hard')
# put the last block in the queue
q_new_block.put(block_3)
# vote
voter.start()
time.sleep(1)
voter.kill()
# retrive blocks from bigchain
blocks = list(r.table('bigchain')
.order_by(r.asc((r.row['block']['timestamp'])))
.run(b.conn))
# FIXME: remove genesis block, we don't vote on it (might change in the future)
blocks.pop(0)
assert all(block['votes'][0]['node_pubkey'] == b.me for block in blocks)
def test_valid_block_voting_with_transfer_transactions(self, b):
q_new_block = mp.Queue()
b.create_genesis_block()
# create a `CREATE` transaction
test_user_priv, test_user_pub = crypto.generate_key_pair()
tx = b.create_transaction(b.me, test_user_pub, None, 'CREATE')
tx_signed = b.sign_transaction(tx, b.me_private)
assert b.is_valid_transaction(tx_signed)
# create valid block
block = b.create_block([tx_signed])
# assert block is valid
assert b.is_valid_block(block)
b.write_block(block, durability='hard')
# create queue and voter
voter = Voter(q_new_block)
# vote
voter.start()
# wait for vote to be written
time.sleep(1)
voter.kill()
# retrive block from bigchain
blocks = list(r.table('bigchain')
.order_by(r.asc((r.row['block']['timestamp'])))
.run(b.conn))
# validate vote
assert len(blocks[1]['votes']) == 1
# create a `TRANSFER` transaction
test_user2_priv, test_user2_pub = crypto.generate_key_pair()
tx2 = b.create_transaction(test_user_pub, test_user2_pub, {'txid': tx['id'], 'cid': 0}, 'TRANSFER')
tx2_signed = b.sign_transaction(tx2, test_user_priv)
assert b.is_valid_transaction(tx2_signed)
# create valid block
block = b.create_block([tx2_signed])
# assert block is valid
assert b.is_valid_block(block)
b.write_block(block, durability='hard')
# create queue and voter
voter = Voter(q_new_block)
# vote
voter.start()
# wait for vote to be written
time.sleep(1)
voter.kill()
# retrive block from bigchain
blocks = list(r.table('bigchain')
.order_by(r.asc((r.row['block']['timestamp'])))
.run(b.conn))
# validate vote
assert len(blocks[2]['votes']) == 1
vote = blocks[2]['votes'][0]
assert vote['vote']['voting_for_block'] == block['id']
assert vote['vote']['is_block_valid'] is True
assert vote['vote']['invalid_reason'] is None
assert vote['node_pubkey'] == b.me
assert crypto.VerifyingKey(b.me).verify(util.serialize(vote['vote']), vote['signature']) is True