def test_get_spent_with_double_spend_detected(self, b, alice):
from bigchaindb.models import Transaction
from bigchaindb.common.exceptions import DoubleSpend
from bigchaindb.exceptions import CriticalDoubleSpend
tx = Transaction.create([alice.public_key], [([alice.public_key], 1)])
tx = tx.sign([alice.private_key])
b.store_bulk_transactions([tx])
transfer_tx = Transaction.transfer(tx.to_inputs(), [([alice.public_key], 1)],
asset_id=tx.id)
transfer_tx = transfer_tx.sign([alice.private_key])
transfer_tx2 = Transaction.transfer(tx.to_inputs(), [([alice.public_key], 2)],
asset_id=tx.id)
transfer_tx2 = transfer_tx2.sign([alice.private_key])
with pytest.raises(DoubleSpend):
b.validate_transaction(transfer_tx2, [transfer_tx])
b.store_bulk_transactions([transfer_tx])
with pytest.raises(DoubleSpend):
b.validate_transaction(transfer_tx2)
b.store_bulk_transactions([transfer_tx2])
with pytest.raises(CriticalDoubleSpend):
b.get_spent(tx.id, 0)
def test_post_transaction_responses(tendermint_ws_url, b):
from bigchaindb.common.crypto import generate_key_pair
from bigchaindb.models import Transaction
alice = generate_key_pair()
bob = generate_key_pair()
tx = Transaction.create([alice.public_key],
[([alice.public_key], 1)],
asset=None)\
.sign([alice.private_key])
code, message = b.write_transaction(tx, 'broadcast_tx_commit')
assert code == 202
tx_transfer = Transaction.transfer(tx.to_inputs(),
[([bob.public_key], 1)],
asset_id=tx.id)\
.sign([alice.private_key])
code, message = b.write_transaction(tx_transfer, 'broadcast_tx_commit')
assert code == 202
carly = generate_key_pair()
double_spend = Transaction.transfer(
tx.to_inputs(),
[([carly.public_key], 1)],
asset_id=tx.id,
).sign([alice.private_key])
for mode in ('broadcast_tx_sync', 'broadcast_tx_commit'):
code, message = b.write_transaction(double_spend, mode)
assert code == 500
assert message == 'Transaction validation failed'
def test_get_spent_key_order(b, user_pk, user_sk, user2_pk, user2_sk):
from bigchaindb import backend
from bigchaindb.models import Transaction
from bigchaindb.common.crypto import generate_key_pair
from bigchaindb.common.exceptions import DoubleSpend
alice = generate_key_pair()
bob = generate_key_pair()
tx1 = Transaction.create([user_pk],
[([alice.public_key], 3), ([user_pk], 2)],
asset=None)\
.sign([user_sk])
b.store_bulk_transactions([tx1])
inputs = tx1.to_inputs()
tx2 = Transaction.transfer([inputs[1]], [([user2_pk], 2)], tx1.id).sign([user_sk])
assert tx2.validate(b)
tx2_dict = tx2.to_dict()
fulfills = tx2_dict['inputs'][0]['fulfills']
tx2_dict['inputs'][0]['fulfills'] = {'output_index': fulfills['output_index'],
'transaction_id': fulfills['transaction_id']}
backend.query.store_transactions(b.connection, [tx2_dict])
tx3 = Transaction.transfer([inputs[1]], [([bob.public_key], 2)], tx1.id).sign([user_sk])
with pytest.raises(DoubleSpend):
tx3.validate(b)
def test_amount_error_transfer(alice, b, user_pk, user_sk):
from bigchaindb.models import Transaction
from bigchaindb.common.exceptions import AmountError
# CREATE divisible asset
tx_create = Transaction.create([alice.public_key], [([user_pk], 100)], asset={'name': random.random()})
tx_create_signed = tx_create.sign([alice.private_key])
b.store_bulk_transactions([tx_create_signed])
# TRANSFER
# output amount less than input amount
tx_transfer = Transaction.transfer(tx_create.to_inputs(), [([alice.public_key], 50)],
asset_id=tx_create.id)
tx_transfer_signed = tx_transfer.sign([user_sk])
with pytest.raises(AmountError):
tx_transfer_signed.validate(b)
# TRANSFER
# output amount greater than input amount
tx_transfer = Transaction.transfer(tx_create.to_inputs(), [([alice.public_key], 101)],
asset_id=tx_create.id)
tx_transfer_signed = tx_transfer.sign([user_sk])
with pytest.raises(AmountError):
tx_transfer_signed.validate(b)
def test_get_divisble_transactions_returns_500(b, client):
from bigchaindb.models import Transaction
from bigchaindb.common import crypto
import json
TX_ENDPOINT = '/api/v1/transactions'
def mine(tx_list):
b.store_bulk_transactions(tx_list)
alice_priv, alice_pub = crypto.generate_key_pair()
bob_priv, bob_pub = crypto.generate_key_pair()
carly_priv, carly_pub = crypto.generate_key_pair()
create_tx = Transaction.create([alice_pub], [([alice_pub], 4)])
create_tx.sign([alice_priv])
res = client.post(TX_ENDPOINT, data=json.dumps(create_tx.to_dict()))
assert res.status_code == 202
mine([create_tx])
transfer_tx = Transaction.transfer(create_tx.to_inputs(),
[([alice_pub], 3), ([bob_pub], 1)],
asset_id=create_tx.id)
transfer_tx.sign([alice_priv])
res = client.post(TX_ENDPOINT, data=json.dumps(transfer_tx.to_dict()))
assert res.status_code == 202
mine([transfer_tx])
transfer_tx_carly = Transaction.transfer([transfer_tx.to_inputs()[1]],
[([carly_pub], 1)],
asset_id=create_tx.id)
transfer_tx_carly.sign([bob_priv])
res = client.post(TX_ENDPOINT, data=json.dumps(transfer_tx_carly.to_dict()))
assert res.status_code == 202
mine([transfer_tx_carly])
asset_id = create_tx.id
url = TX_ENDPOINT + '?asset_id=' + asset_id
assert client.get(url).status_code == 200
assert len(client.get(url).json) == 3
url = OUTPUTS_ENDPOINT + '?public_key=' + alice_pub
assert client.get(url).status_code == 200
url = OUTPUTS_ENDPOINT + '?public_key=' + bob_pub
assert client.get(url).status_code == 200
url = OUTPUTS_ENDPOINT + '?public_key=' + carly_pub
assert client.get(url).status_code == 200
def test_get_spent_issue_1271(b, alice, bob, carol):
from bigchaindb.models import Transaction
tx_1 = Transaction.create(
[carol.public_key],
[([carol.public_key], 8)],
).sign([carol.private_key])
assert tx_1.validate(b)
b.store_bulk_transactions([tx_1])
tx_2 = Transaction.transfer(
tx_1.to_inputs(),
[([bob.public_key], 2),
([alice.public_key], 2),
([carol.public_key], 4)],
asset_id=tx_1.id,
).sign([carol.private_key])
assert tx_2.validate(b)
b.store_bulk_transactions([tx_2])
tx_3 = Transaction.transfer(
tx_2.to_inputs()[2:3],
[([alice.public_key], 1),
([carol.public_key], 3)],
asset_id=tx_1.id,
).sign([carol.private_key])
assert tx_3.validate(b)
b.store_bulk_transactions([tx_3])
tx_4 = Transaction.transfer(
tx_2.to_inputs()[1:2] + tx_3.to_inputs()[0:1],
[([bob.public_key], 3)],
asset_id=tx_1.id,
).sign([alice.private_key])
assert tx_4.validate(b)
b.store_bulk_transactions([tx_4])
tx_5 = Transaction.transfer(
tx_2.to_inputs()[0:1],
[([alice.public_key], 2)],
asset_id=tx_1.id,
).sign([bob.private_key])
assert tx_5.validate(b)
b.store_bulk_transactions([tx_5])
assert b.get_spent(tx_2.id, 0) == tx_5
assert not b.get_spent(tx_5.id, 0)
assert b.get_outputs_filtered(alice.public_key)
assert b.get_outputs_filtered(alice.public_key, spent=False)
def test_get_spent_multiple_owners(self, b, user_sk, user_pk, alice):
from bigchaindb.common import crypto
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
user3_sk, user3_pk = crypto.generate_key_pair()
transactions = []
for i in range(3):
payload = {'somedata': i}
tx = Transaction.create([alice.public_key], [([user_pk, user2_pk], 1)],
payload)
tx = tx.sign([alice.private_key])
transactions.append(tx)
b.store_bulk_transactions(transactions)
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(user_pk)
# check spents
for input_tx in owned_inputs_user1:
assert b.get_spent(input_tx.txid, input_tx.output) is None
# create a transaction
tx = Transaction.transfer(transactions[0].to_inputs(),
[([user3_pk], 1)],
asset_id=transactions[0].id)
tx = tx.sign([user_sk, user2_sk])
b.store_bulk_transactions([tx])
# check that used inputs are marked as spent
assert b.get_spent(transactions[0].id, 0) == tx
# check that the other remain marked as unspent
for unspent in transactions[1:]:
assert b.get_spent(unspent.id, 0) is None
def test_cant_spend_same_input_twice_in_tx(b, genesis_block, alice):
"""Recreate duplicated fulfillments bug
https://github.com/bigchaindb/bigchaindb/issues/1099
"""
from bigchaindb.models import Transaction
from bigchaindb.common.exceptions import DoubleSpend
# create a divisible asset
tx_create = Transaction.create([alice.public_key], [([alice.public_key], 100)])
tx_create_signed = tx_create.sign([alice.private_key])
assert b.validate_transaction(tx_create_signed) == tx_create_signed
# create a block and valid vote
block = b.create_block([tx_create_signed])
b.write_block(block)
vote = b.vote(block.id, genesis_block.id, True)
b.write_vote(vote)
# Create a transfer transaction with duplicated fulfillments
dup_inputs = tx_create.to_inputs() + tx_create.to_inputs()
tx_transfer = Transaction.transfer(dup_inputs, [([alice.public_key], 200)],
asset_id=tx_create.id)
tx_transfer_signed = tx_transfer.sign([alice.private_key])
with pytest.raises(DoubleSpend):
tx_transfer_signed.validate(b)
def test_get_owned_ids_multiple_owners(self, b, user_sk, user_pk, alice):
from bigchaindb.common import crypto
from bigchaindb.common.transaction import TransactionLink
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
user3_sk, user3_pk = crypto.generate_key_pair()
tx = Transaction.create([alice.public_key], [([user_pk, user2_pk], 1)])
tx = tx.sign([alice.private_key])
b.store_bulk_transactions([tx])
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(user_pk)
owned_inputs_user2 = b.fastquery.get_outputs_by_public_key(user_pk)
expected_owned_inputs_user1 = [TransactionLink(tx.id, 0)]
assert owned_inputs_user1 == owned_inputs_user2
assert owned_inputs_user1 == expected_owned_inputs_user1
tx = Transaction.transfer(tx.to_inputs(), [([user3_pk], 1)],
asset_id=tx.id)
tx = tx.sign([user_sk, user2_sk])
b.store_bulk_transactions([tx])
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(user_pk)
owned_inputs_user2 = b.fastquery.get_outputs_by_public_key(user2_pk)
spent_user1 = b.get_spent(tx.id, 0)
assert owned_inputs_user1 == owned_inputs_user2
assert not spent_user1
def test_get_owned_ids_single_tx_single_output(self, b, user_sk, user_pk, alice):
from bigchaindb.common import crypto
from bigchaindb.common.transaction import TransactionLink
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
tx = Transaction.create([alice.public_key], [([user_pk], 1)])
tx = tx.sign([alice.private_key])
b.store_bulk_transactions([tx])
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(user_pk)
owned_inputs_user2 = b.fastquery.get_outputs_by_public_key(user2_pk)
assert owned_inputs_user1 == [TransactionLink(tx.id, 0)]
assert owned_inputs_user2 == []
tx_transfer = Transaction.transfer(tx.to_inputs(), [([user2_pk], 1)],
asset_id=tx.id)
tx_transfer = tx_transfer.sign([user_sk])
b.store_bulk_transactions([tx_transfer])
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(user_pk)
owned_inputs_user2 = b.fastquery.get_outputs_by_public_key(user2_pk)
assert owned_inputs_user1 == [TransactionLink(tx.id, 0)]
assert owned_inputs_user2 == [TransactionLink(tx_transfer.id, 0)]
def test_read_transaction_invalid_block_and_backlog(self, b, user_pk, user_sk):
from bigchaindb.models import Transaction
input_tx = b.get_owned_ids(user_pk).pop()
input_tx = b.get_transaction(input_tx.txid)
inputs = input_tx.to_inputs()
tx = Transaction.transfer(inputs, [([user_pk], 1)],
asset_id=input_tx.id)
tx = tx.sign([user_sk])
# Make sure there's a copy of tx in the backlog
b.write_transaction(tx)
# create block
block = b.create_block([tx])
b.write_block(block)
# vote the block invalid
vote = b.vote(block.id, b.get_last_voted_block().id, False)
b.write_vote(vote)
# a copy of the tx is both in the backlog and in an invalid
# block, so get_transaction should return a transaction,
# and a status of TX_IN_BACKLOG
response, status = b.get_transaction(tx.id, include_status=True)
assert tx.to_dict() == response.to_dict()
assert status == b.TX_IN_BACKLOG
def test_get_asset_id_transfer_transaction(b, signed_create_tx, user_pk):
from bigchaindb.models import Transaction
tx_transfer = Transaction.transfer(signed_create_tx.to_inputs(),
[([user_pk], 1)], signed_create_tx.id)
asset_id = Transaction.get_asset_id(tx_transfer)
assert asset_id == tx_transfer.asset['id']
def test_multiple_owners_before_multiple_owners_after_single_input(
self, b, user_sk, user_pk, alice):
from bigchaindb.common import crypto
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
user3_sk, user3_pk = crypto.generate_key_pair()
user4_sk, user4_pk = crypto.generate_key_pair()
tx = Transaction.create([alice.public_key], [([user_pk, user2_pk], 1)])
tx = tx.sign([alice.private_key])
b.store_bulk_transactions([tx])
# get input
tx_link = b.fastquery.get_outputs_by_public_key(user_pk).pop()
tx_input = b.get_transaction(tx_link.txid)
tx = Transaction.transfer(tx_input.to_inputs(),
[([user3_pk, user4_pk], 1)],
asset_id=tx_input.id)
tx = tx.sign([user_sk, user2_sk])
tx.validate(b)
assert len(tx.inputs) == 1
assert len(tx.outputs) == 1
def test_multiple_owners_before_multiple_owners_after_single_input(self, b,
user_sk,
user_pk,
alice):
from bigchaindb.common import crypto
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
user3_sk, user3_pk = crypto.generate_key_pair()
user4_sk, user4_pk = crypto.generate_key_pair()
tx = Transaction.create([alice.public_key], [([user_pk, user2_pk], 1)])
tx = tx.sign([alice.private_key])
b.store_bulk_transactions([tx])
# get input
tx_link = b.fastquery.get_outputs_by_public_key(user_pk).pop()
tx_input = b.get_transaction(tx_link.txid)
tx = Transaction.transfer(tx_input.to_inputs(),
[([user3_pk, user4_pk], 1)],
asset_id=tx_input.id)
tx = tx.sign([user_sk, user2_sk])
tx.validate(b)
assert len(tx.inputs) == 1
assert len(tx.outputs) == 1
def test_get_spent_single_tx_single_output(self, b, user_sk, user_pk,
alice):
from bigchaindb.common import crypto
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
tx = Transaction.create([alice.public_key], [([user_pk], 1)])
tx = tx.sign([alice.private_key])
block = b.create_block([tx])
b.write_block(block)
owned_inputs_user1 = b.get_owned_ids(user_pk).pop()
# check spents
input_txid = owned_inputs_user1.txid
input_idx = owned_inputs_user1.output
spent_inputs_user1 = b.get_spent(input_txid, input_idx)
assert spent_inputs_user1 is None
# create a transaction and block
tx = Transaction.transfer(tx.to_inputs(), [([user2_pk], 1)],
asset_id=tx.id)
tx = tx.sign([user_sk])
block = b.create_block([tx])
b.write_block(block)
spent_inputs_user1 = b.get_spent(input_txid, input_idx)
assert spent_inputs_user1 == tx
def test_muiltiple_in_mix_own_multiple_out_mix_own_transfer(b, user_pk,
user_sk):
from bigchaindb.models import Transaction
from bigchaindb.common.transaction import _fulfillment_to_details
# CREATE divisible asset
tx_create = Transaction.create([b.me], [([user_pk], 50), ([user_pk, b.me], 50)],
asset={'name': random.random()})
tx_create_signed = tx_create.sign([b.me_private])
# TRANSFER
tx_transfer = Transaction.transfer(tx_create.to_inputs(),
[([b.me], 50), ([b.me, user_pk], 50)],
asset_id=tx_create.id)
tx_transfer_signed = tx_transfer.sign([b.me_private, user_sk])
b.store_bulk_transactions([tx_create_signed, tx_transfer_signed])
assert tx_transfer_signed.validate(b) == tx_transfer_signed
assert len(tx_transfer_signed.outputs) == 2
assert tx_transfer_signed.outputs[0].amount == 50
assert tx_transfer_signed.outputs[1].amount == 50
assert len(tx_transfer_signed.inputs) == 2
cond_cid0 = tx_transfer_signed.outputs[0].to_dict()
cond_cid1 = tx_transfer_signed.outputs[1].to_dict()
assert 'subconditions' not in cond_cid0['condition']['details']
assert 'subconditions' in cond_cid1['condition']['details']
assert len(cond_cid1['condition']['details']['subconditions']) == 2
ffill_fid0 = _fulfillment_to_details(tx_transfer_signed.inputs[0].fulfillment)
ffill_fid1 = _fulfillment_to_details(tx_transfer_signed.inputs[1].fulfillment)
assert 'subconditions' not in ffill_fid0
assert 'subconditions' in ffill_fid1
assert len(ffill_fid1['subconditions']) == 2
def test_single_in_multiple_own_single_out_single_own_transfer(b, user_pk,
user_sk):
from bigchaindb.models import Transaction
from bigchaindb.common.transaction import _fulfillment_to_details
# CREATE divisible asset
tx_create = Transaction.create([b.me], [([b.me, user_pk], 100)],
asset={'name': random.random()})
tx_create_signed = tx_create.sign([b.me_private])
# TRANSFER
tx_transfer = Transaction.transfer(tx_create.to_inputs(), [([b.me], 100)],
asset_id=tx_create.id)
tx_transfer_signed = tx_transfer.sign([b.me_private, user_sk])
b.store_bulk_transactions([tx_create_signed, tx_transfer_signed])
assert tx_transfer_signed.validate(b) == tx_transfer_signed
assert len(tx_transfer_signed.outputs) == 1
assert tx_transfer_signed.outputs[0].amount == 100
assert len(tx_transfer_signed.inputs) == 1
ffill = _fulfillment_to_details(tx_transfer_signed.inputs[0].fulfillment)
assert 'subconditions' in ffill
assert len(ffill['subconditions']) == 2
def test_single_in_single_own_single_out_multiple_own_transfer(b, user_pk,
user_sk):
from bigchaindb.models import Transaction
# CREATE divisible asset
tx_create = Transaction.create([b.me], [([user_pk], 100)], asset={'name': random.random()})
tx_create_signed = tx_create.sign([b.me_private])
# TRANSFER
tx_transfer = Transaction.transfer(tx_create.to_inputs(),
[([b.me, b.me], 100)],
asset_id=tx_create.id)
tx_transfer_signed = tx_transfer.sign([user_sk])
b.store_bulk_transactions([tx_create_signed, tx_transfer_signed])
assert tx_transfer_signed.validate(b) == tx_transfer_signed
assert len(tx_transfer_signed.outputs) == 1
assert tx_transfer_signed.outputs[0].amount == 100
condition = tx_transfer_signed.outputs[0].to_dict()
assert 'subconditions' in condition['condition']['details']
assert len(condition['condition']['details']['subconditions']) == 2
assert len(tx_transfer_signed.inputs) == 1
def test_get_owned_ids_single_tx_single_output(self, b, user_sk, user_pk,
alice):
from bigchaindb.common import crypto
from bigchaindb.common.transaction import TransactionLink
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
tx = Transaction.create([alice.public_key], [([user_pk], 1)])
tx = tx.sign([alice.private_key])
b.store_bulk_transactions([tx])
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(user_pk)
owned_inputs_user2 = b.fastquery.get_outputs_by_public_key(user2_pk)
assert owned_inputs_user1 == [TransactionLink(tx.id, 0)]
assert owned_inputs_user2 == []
tx_transfer = Transaction.transfer(tx.to_inputs(), [([user2_pk], 1)],
asset_id=tx.id)
tx_transfer = tx_transfer.sign([user_sk])
b.store_bulk_transactions([tx_transfer])
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(user_pk)
owned_inputs_user2 = b.fastquery.get_outputs_by_public_key(user2_pk)
assert owned_inputs_user1 == [TransactionLink(tx.id, 0)]
assert owned_inputs_user2 == [TransactionLink(tx_transfer.id, 0)]
def test_get_owned_ids_multiple_owners(self, b, user_sk, user_pk, alice):
from bigchaindb.common import crypto
from bigchaindb.common.transaction import TransactionLink
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
user3_sk, user3_pk = crypto.generate_key_pair()
tx = Transaction.create([alice.public_key], [([user_pk, user2_pk], 1)])
tx = tx.sign([alice.private_key])
b.store_bulk_transactions([tx])
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(user_pk)
owned_inputs_user2 = b.fastquery.get_outputs_by_public_key(user_pk)
expected_owned_inputs_user1 = [TransactionLink(tx.id, 0)]
assert owned_inputs_user1 == owned_inputs_user2
assert owned_inputs_user1 == expected_owned_inputs_user1
tx = Transaction.transfer(tx.to_inputs(), [([user3_pk], 1)],
asset_id=tx.id)
tx = tx.sign([user_sk, user2_sk])
b.store_bulk_transactions([tx])
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(user_pk)
owned_inputs_user2 = b.fastquery.get_outputs_by_public_key(user2_pk)
spent_user1 = b.get_spent(tx.id, 0)
assert owned_inputs_user1 == owned_inputs_user2
assert not spent_user1
def test_get_spent_single_tx_single_output(self, b, user_sk, user_pk, alice):
from bigchaindb.common import crypto
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
tx = Transaction.create([alice.public_key], [([user_pk], 1)])
tx = tx.sign([alice.private_key])
b.store_bulk_transactions([tx])
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(user_pk).pop()
# check spents
input_txid = owned_inputs_user1.txid
spent_inputs_user1 = b.get_spent(input_txid, 0)
assert spent_inputs_user1 is None
# create a transaction and send it
tx = Transaction.transfer(tx.to_inputs(), [([user2_pk], 1)],
asset_id=tx.id)
tx = tx.sign([user_sk])
b.store_bulk_transactions([tx])
spent_inputs_user1 = b.get_spent(input_txid, 0)
assert spent_inputs_user1 == tx
def test_post_wrong_asset_division_transfer_returns_400(b, client, user_pk):
from bigchaindb.models import Transaction
from bigchaindb.common.exceptions import AmountError
priv_key, pub_key = crypto.generate_key_pair()
create_tx = Transaction.create([pub_key], [([pub_key], 10)],
asset={
'test': 'asset'
}).sign([priv_key])
res = client.post(TX_ENDPOINT + '?mode=commit',
data=json.dumps(create_tx.to_dict()))
assert res.status_code == 202
transfer_tx = Transaction.transfer(
create_tx.to_inputs(),
[([pub_key], 20)], # 20 > 10
asset_id=create_tx.id).sign([priv_key])
res = client.post(TX_ENDPOINT + '?mode=commit',
data=json.dumps(transfer_tx.to_dict()))
expected_error_message = \
f'Invalid transaction ({AmountError.__name__}): ' + \
'The amount used in the inputs `10` needs to be same as the amount used in the outputs `20`'
assert res.status_code == 400
assert res.json['message'] == expected_error_message
def test_threshold_same_public_key(alice, b, user_pk, user_sk):
# If we try to fulfill a threshold condition where each subcondition has
# the same key get_subcondition_from_vk will always return the first
# subcondition. This means that only the 1st subfulfillment will be
# generated
# Creating threshold conditions with the same key does not make sense but
# that does not mean that the code shouldn't work.
from bigchaindb.models import Transaction
# CREATE divisible asset
tx_create = Transaction.create([alice.public_key], [([user_pk, user_pk], 100)],
asset={'name': random.random()})
tx_create_signed = tx_create.sign([alice.private_key])
# TRANSFER
tx_transfer = Transaction.transfer(tx_create.to_inputs(), [([alice.public_key], 100)],
asset_id=tx_create.id)
tx_transfer_signed = tx_transfer.sign([user_sk, user_sk])
b.store_bulk_transactions([tx_create_signed])
assert tx_transfer_signed.validate(b) == tx_transfer_signed
b.store_bulk_transactions([tx_transfer_signed])
with pytest.raises(DoubleSpend):
tx_transfer_signed.validate(b)
def test_get_asset_id_transfer_transaction(b, signed_create_tx, user_pk):
from bigchaindb.models import Transaction
tx_transfer = Transaction.transfer(signed_create_tx.to_inputs(), [([user_pk], 1)],
signed_create_tx.id)
asset_id = Transaction.get_asset_id(tx_transfer)
assert asset_id == tx_transfer.asset['id']
def test_get_owned_ids_single_tx_multiple_outputs(self, b, user_sk,
user_pk, alice):
from bigchaindb.common import crypto
from bigchaindb.common.transaction import TransactionLink
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
# create divisible asset
tx_create = Transaction.create([alice.public_key], [([user_pk], 1), ([user_pk], 1)])
tx_create_signed = tx_create.sign([alice.private_key])
b.store_bulk_transactions([tx_create_signed])
# get input
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(user_pk)
owned_inputs_user2 = b.fastquery.get_outputs_by_public_key(user2_pk)
expected_owned_inputs_user1 = [TransactionLink(tx_create.id, 0),
TransactionLink(tx_create.id, 1)]
assert owned_inputs_user1 == expected_owned_inputs_user1
assert owned_inputs_user2 == []
# transfer divisible asset divided in two outputs
tx_transfer = Transaction.transfer(tx_create.to_inputs(),
[([user2_pk], 1), ([user2_pk], 1)],
asset_id=tx_create.id)
tx_transfer_signed = tx_transfer.sign([user_sk])
b.store_bulk_transactions([tx_transfer_signed])
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(user_pk)
owned_inputs_user2 = b.fastquery.get_outputs_by_public_key(user2_pk)
assert owned_inputs_user1 == expected_owned_inputs_user1
assert owned_inputs_user2 == [TransactionLink(tx_transfer.id, 0),
TransactionLink(tx_transfer.id, 1)]
def test_muiltiple_in_mix_own_multiple_out_single_own_transfer(alice, b, user_pk,
user_sk):
from bigchaindb.models import Transaction
from bigchaindb.common.transaction import _fulfillment_to_details
# CREATE divisible asset
tx_create = Transaction.create([alice.public_key], [([user_pk], 50), ([user_pk, alice.public_key], 50)],
asset={'name': random.random()})
tx_create_signed = tx_create.sign([alice.private_key])
# TRANSFER
tx_transfer = Transaction.transfer(tx_create.to_inputs(), [([alice.public_key], 100)],
asset_id=tx_create.id)
tx_transfer_signed = tx_transfer.sign([alice.private_key, user_sk])
b.store_bulk_transactions([tx_create_signed])
assert tx_transfer_signed.validate(b) == tx_transfer_signed
assert len(tx_transfer_signed.outputs) == 1
assert tx_transfer_signed.outputs[0].amount == 100
assert len(tx_transfer_signed.inputs) == 2
ffill_fid0 = _fulfillment_to_details(tx_transfer_signed.inputs[0].fulfillment)
ffill_fid1 = _fulfillment_to_details(tx_transfer_signed.inputs[1].fulfillment)
assert 'subconditions' not in ffill_fid0
assert 'subconditions' in ffill_fid1
assert len(ffill_fid1['subconditions']) == 2
b.store_bulk_transactions([tx_transfer_signed])
with pytest.raises(DoubleSpend):
tx_transfer_signed.validate(b)
def test_multiple_owners_before_multiple_owners_after_single_input(self, b,
user_sk,
user_pk,
alice):
from bigchaindb.common import crypto
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
user3_sk, user3_pk = crypto.generate_key_pair()
user4_sk, user4_pk = crypto.generate_key_pair()
tx = Transaction.create([alice.public_key], [([user_pk, user2_pk], 1)])
tx = tx.sign([alice.private_key])
block = b.create_block([tx])
b.write_block(block)
# vote block valid
vote = b.vote(block.id, b.get_last_voted_block().id, True)
b.write_vote(vote)
# get input
tx_link = b.get_owned_ids(user_pk).pop()
tx_input = b.get_transaction(tx_link.txid)
tx = Transaction.transfer(tx_input.to_inputs(),
[([user3_pk, user4_pk], 1)],
asset_id=tx_input.id)
tx = tx.sign([user_sk, user2_sk])
tx.validate(b)
assert len(tx.inputs) == 1
assert len(tx.outputs) == 1
def test_single_in_single_own_multiple_out_mix_own_transfer(alice, b, user_pk,
user_sk):
from bigchaindb.models import Transaction
# CREATE divisible asset
tx_create = Transaction.create([alice.public_key], [([user_pk], 100)], asset={'name': random.random()})
tx_create_signed = tx_create.sign([alice.private_key])
# TRANSFER
tx_transfer = Transaction.transfer(tx_create.to_inputs(),
[([alice.public_key], 50), ([alice.public_key, alice.public_key], 50)],
asset_id=tx_create.id)
tx_transfer_signed = tx_transfer.sign([user_sk])
b.store_bulk_transactions([tx_create_signed])
assert tx_transfer_signed.validate(b) == tx_transfer_signed
assert len(tx_transfer_signed.outputs) == 2
assert tx_transfer_signed.outputs[0].amount == 50
assert tx_transfer_signed.outputs[1].amount == 50
output_cid1 = tx_transfer_signed.outputs[1].to_dict()
assert 'subconditions' in output_cid1['condition']['details']
assert len(output_cid1['condition']['details']['subconditions']) == 2
assert len(tx_transfer_signed.inputs) == 1
b.store_bulk_transactions([tx_transfer_signed])
with pytest.raises(DoubleSpend):
tx_transfer_signed.validate(b)
def test_get_owned_ids_multiple_owners(self, b, user_sk, user_pk, alice):
from bigchaindb.common import crypto
from bigchaindb.common.transaction import TransactionLink
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
user3_sk, user3_pk = crypto.generate_key_pair()
tx = Transaction.create([alice.public_key], [([user_pk, user2_pk], 1)])
tx = tx.sign([alice.private_key])
block = b.create_block([tx])
b.write_block(block)
owned_inputs_user1 = b.get_owned_ids(user_pk)
owned_inputs_user2 = b.get_owned_ids(user2_pk)
expected_owned_inputs_user1 = [TransactionLink(tx.id, 0)]
assert owned_inputs_user1 == owned_inputs_user2
assert owned_inputs_user1 == expected_owned_inputs_user1
tx = Transaction.transfer(tx.to_inputs(), [([user3_pk], 1)],
asset_id=tx.id)
tx = tx.sign([user_sk, user2_sk])
block = b.create_block([tx])
b.write_block(block)
owned_inputs_user1 = b.get_owned_ids(user_pk)
owned_inputs_user2 = b.get_owned_ids(user2_pk)
assert owned_inputs_user1 == owned_inputs_user2
assert owned_inputs_user1 == []
def test_get_spent_multiple_owners(self, b, user_sk, user_pk, alice):
from bigchaindb.common import crypto
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
user3_sk, user3_pk = crypto.generate_key_pair()
transactions = []
for i in range(3):
payload = {'somedata': i}
tx = Transaction.create([alice.public_key],
[([user_pk, user2_pk], 1)], payload)
tx = tx.sign([alice.private_key])
transactions.append(tx)
b.store_bulk_transactions(transactions)
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(user_pk)
# check spents
for input_tx in owned_inputs_user1:
assert b.get_spent(input_tx.txid, input_tx.output) is None
# create a transaction
tx = Transaction.transfer(transactions[0].to_inputs(),
[([user3_pk], 1)],
asset_id=transactions[0].id)
tx = tx.sign([user_sk, user2_sk])
b.store_bulk_transactions([tx])
# check that used inputs are marked as spent
assert b.get_spent(transactions[0].id, 0) == tx
# check that the other remain marked as unspent
for unspent in transactions[1:]:
assert b.get_spent(unspent.id, 0) is None
def test_get_spent_single_tx_single_output(self, b, user_sk, user_pk,
alice):
from bigchaindb.common import crypto
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
tx = Transaction.create([alice.public_key], [([user_pk], 1)])
tx = tx.sign([alice.private_key])
b.store_bulk_transactions([tx])
owned_inputs_user1 = b.fastquery.get_outputs_by_public_key(
user_pk).pop()
# check spents
input_txid = owned_inputs_user1.txid
spent_inputs_user1 = b.get_spent(input_txid, 0)
assert spent_inputs_user1 is None
# create a transaction and send it
tx = Transaction.transfer(tx.to_inputs(), [([user2_pk], 1)],
asset_id=tx.id)
tx = tx.sign([user_sk])
b.store_bulk_transactions([tx])
spent_inputs_user1 = b.get_spent(input_txid, 0)
assert spent_inputs_user1 == tx
def test_get_spent_transaction_critical_double_spend(b, alice, bob, carol):
from bigchaindb.models import Transaction
from bigchaindb.exceptions import CriticalDoubleSpend
from bigchaindb.common.exceptions import DoubleSpend
asset = {'test': 'asset'}
tx = Transaction.create([alice.public_key],
[([alice.public_key], 1)],
asset=asset)\
.sign([alice.private_key])
tx_transfer = Transaction.transfer(tx.to_inputs(),
[([bob.public_key], 1)],
asset_id=tx.id)\
.sign([alice.private_key])
double_spend = Transaction.transfer(tx.to_inputs(),
[([carol.public_key], 1)],
asset_id=tx.id)\
.sign([alice.private_key])
same_input_double_spend = Transaction.transfer(tx.to_inputs() + tx.to_inputs(),
[([bob.public_key], 1)],
asset_id=tx.id)\
.sign([alice.private_key])
b.store_bulk_transactions([tx])
with pytest.raises(DoubleSpend):
same_input_double_spend.validate(b)
assert b.get_spent(tx.id, tx_transfer.inputs[0].fulfills.output, [tx_transfer])
with pytest.raises(DoubleSpend):
b.get_spent(tx.id, tx_transfer.inputs[0].fulfills.output,
[tx_transfer, double_spend])
b.store_bulk_transactions([tx_transfer])
with pytest.raises(DoubleSpend):
b.get_spent(tx.id, tx_transfer.inputs[0].fulfills.output, [double_spend])
b.store_bulk_transactions([double_spend])
with pytest.raises(CriticalDoubleSpend):
b.get_spent(tx.id, tx_transfer.inputs[0].fulfills.output)
def test_get_spent_issue_1271(b, alice, bob, carol):
from bigchaindb.models import Transaction
tx_1 = Transaction.create(
[carol.public_key],
[([carol.public_key], 8)],
).sign([carol.private_key])
assert b.validate_transaction(tx_1)
b.store_bulk_transactions([tx_1])
tx_2 = Transaction.transfer(
tx_1.to_inputs(),
[([bob.public_key], 2), ([alice.public_key], 2),
([carol.public_key], 4)],
asset_id=tx_1.id,
).sign([carol.private_key])
assert b.validate_transaction(tx_2)
b.store_bulk_transactions([tx_2])
tx_3 = Transaction.transfer(
tx_2.to_inputs()[2:3],
[([alice.public_key], 1), ([carol.public_key], 3)],
asset_id=tx_1.id,
).sign([carol.private_key])
assert b.validate_transaction(tx_3)
b.store_bulk_transactions([tx_3])
tx_4 = Transaction.transfer(
tx_2.to_inputs()[1:2] + tx_3.to_inputs()[0:1],
[([bob.public_key], 3)],
asset_id=tx_1.id,
).sign([alice.private_key])
assert b.validate_transaction(tx_4)
b.store_bulk_transactions([tx_4])
tx_5 = Transaction.transfer(
tx_2.to_inputs()[0:1],
[([alice.public_key], 2)],
asset_id=tx_1.id,
).sign([bob.private_key])
assert b.validate_transaction(tx_5)
b.store_bulk_transactions([tx_5])
assert b.get_spent(tx_2.id, 0) == tx_5
assert not b.get_spent(tx_5.id, 0)
assert b.get_outputs_filtered(alice.public_key)
assert b.get_outputs_filtered(alice.public_key, spent=False)
def test_get_spent_transaction_critical_double_spend(b, alice, bob, carol):
from bigchaindb.models import Transaction
from bigchaindb.exceptions import CriticalDoubleSpend
from bigchaindb.common.exceptions import DoubleSpend
asset = {'test': 'asset'}
tx = Transaction.create([alice.public_key],
[([alice.public_key], 1)],
asset=asset)\
.sign([alice.private_key])
tx_transfer = Transaction.transfer(tx.to_inputs(),
[([bob.public_key], 1)],
asset_id=tx.id)\
.sign([alice.private_key])
double_spend = Transaction.transfer(tx.to_inputs(),
[([carol.public_key], 1)],
asset_id=tx.id)\
.sign([alice.private_key])
same_input_double_spend = Transaction.transfer(tx.to_inputs() + tx.to_inputs(),
[([bob.public_key], 1)],
asset_id=tx.id)\
.sign([alice.private_key])
b.store_bulk_transactions([tx])
with pytest.raises(DoubleSpend):
same_input_double_spend.validate(b)
assert b.get_spent(tx.id, tx_transfer.inputs[0].fulfills.output, [tx_transfer])
with pytest.raises(DoubleSpend):
b.get_spent(tx.id, tx_transfer.inputs[0].fulfills.output,
[tx_transfer, double_spend])
b.store_bulk_transactions([tx_transfer])
with pytest.raises(DoubleSpend):
b.get_spent(tx.id, tx_transfer.inputs[0].fulfills.output, [double_spend])
b.store_bulk_transactions([double_spend])
with pytest.raises(CriticalDoubleSpend):
b.get_spent(tx.id, tx_transfer.inputs[0].fulfills.output)
def txlist(b, user_pk, user2_pk, user_sk, user2_sk, genesis_block):
from bigchaindb.models import Transaction
prev_block_id = genesis_block.id
# Create first block with CREATE transactions
create1 = Transaction.create([user_pk], [([user2_pk], 6)]) \
.sign([user_sk])
create2 = Transaction.create([user2_pk],
[([user2_pk], 5), ([user_pk], 5)]) \
.sign([user2_sk])
block1 = b.create_block([create1, create2])
b.write_block(block1)
# Create second block with TRANSFER transactions
transfer1 = Transaction.transfer(create1.to_inputs(), [([user_pk], 8)],
create1.id).sign([user2_sk])
block2 = b.create_block([transfer1])
b.write_block(block2)
# Create block with double spend
tx_doublespend = Transaction.transfer(create1.to_inputs(),
[([user_pk], 9)],
create1.id).sign([user2_sk])
block_doublespend = b.create_block([tx_doublespend])
b.write_block(block_doublespend)
# Vote on all the blocks
prev_block_id = genesis_block.id
for bid in [block1.id, block2.id]:
vote = b.vote(bid, prev_block_id, True)
prev_block_id = bid
b.write_vote(vote)
# Create undecided block
untx = Transaction.create([user_pk], [([user2_pk], 7)]) \
.sign([user_sk])
block_undecided = b.create_block([untx])
b.write_block(block_undecided)
return type('', (), {
'create1': create1,
'transfer1': transfer1,
})
def generate_create_and_transfer(keypair=None):
if not keypair:
keypair = generate_key_pair()
priv_key, pub_key = keypair
create_tx = Transaction.create([pub_key], [([pub_key], 10)]).sign([priv_key])
transfer_tx = Transaction.transfer(
create_tx.to_inputs(),
[([pub_key], 10)],
asset_id=create_tx.id).sign([priv_key])
return create_tx, transfer_tx
def test_get_spending_transactions(user_pk):
from bigchaindb.backend import connect, query
from bigchaindb.models import Block, Transaction
conn = connect()
out = [([user_pk], 1)]
tx1 = Transaction.create([user_pk], out * 3)
inputs = tx1.to_inputs()
tx2 = Transaction.transfer([inputs[0]], out, tx1.id)
tx3 = Transaction.transfer([inputs[1]], out, tx1.id)
tx4 = Transaction.transfer([inputs[2]], out, tx1.id)
block = Block([tx1, tx2, tx3, tx4])
conn.db.bigchain.insert_one(block.to_dict())
links = [inputs[0].fulfills.to_dict(), inputs[2].fulfills.to_dict()]
res = list(query.get_spending_transactions(conn, links))
# tx3 not a member because input 1 not asked for
assert res == [(block.id, tx2.to_dict()), (block.id, tx4.to_dict())]
def generate_create_and_transfer(keypair=None):
if not keypair:
keypair = generate_key_pair()
priv_key, pub_key = keypair
create_tx = Transaction.create([pub_key], [([pub_key], 10)]).sign([priv_key])
transfer_tx = Transaction.transfer(
create_tx.to_inputs(),
[([pub_key], 10)],
asset_id=create_tx.id).sign([priv_key])
return create_tx, transfer_tx
def test_deliver_transfer_tx__double_spend_fails(a, b, init_chain_request):
from bigchaindb import App
from bigchaindb.models import Transaction
from bigchaindb.common.crypto import generate_key_pair
app = App(a, b)
app.init_chain(init_chain_request)
begin_block = types.RequestBeginBlock()
app.begin_block(begin_block)
alice = generate_key_pair()
bob = generate_key_pair()
carly = generate_key_pair()
asset = {
'msg': 'live long and prosper'
}
tx = Transaction.create([alice.public_key],
[([alice.public_key], 1)],
asset=asset)\
.sign([alice.private_key])
result = app.deliver_tx(encode_tx_to_bytes(tx))
assert result.code == CodeTypeOk
tx_transfer = Transaction.transfer(tx.to_inputs(),
[([bob.public_key], 1)],
asset_id=tx.id)\
.sign([alice.private_key])
result = app.deliver_tx(encode_tx_to_bytes(tx_transfer))
assert result.code == CodeTypeOk
double_spend = Transaction.transfer(tx.to_inputs(),
[([carly.public_key], 1)],
asset_id=tx.id)\
.sign([alice.private_key])
result = app.deliver_tx(encode_tx_to_bytes(double_spend))
assert result.code == CodeTypeError
def test_deliver_transfer_tx__double_spend_fails(b, init_chain_request):
from bigchaindb import App
from bigchaindb.models import Transaction
from bigchaindb.common.crypto import generate_key_pair
app = App(b)
app.init_chain(init_chain_request)
begin_block = RequestBeginBlock()
app.begin_block(begin_block)
alice = generate_key_pair()
bob = generate_key_pair()
carly = generate_key_pair()
asset = {
'msg': 'live long and prosper'
}
tx = Transaction.create([alice.public_key],
[([alice.public_key], 1)],
asset=asset)\
.sign([alice.private_key])
result = app.deliver_tx(encode_tx_to_bytes(tx))
assert result.code == CodeTypeOk
tx_transfer = Transaction.transfer(tx.to_inputs(),
[([bob.public_key], 1)],
asset_id=tx.id)\
.sign([alice.private_key])
result = app.deliver_tx(encode_tx_to_bytes(tx_transfer))
assert result.code == CodeTypeOk
double_spend = Transaction.transfer(tx.to_inputs(),
[([carly.public_key], 1)],
asset_id=tx.id)\
.sign([alice.private_key])
result = app.deliver_tx(encode_tx_to_bytes(double_spend))
assert result.code == CodeTypeError
def test_get_spending_transactions(user_pk, user_sk):
from bigchaindb.backend import connect, query
from bigchaindb.models import Transaction
conn = connect()
out = [([user_pk], 1)]
tx1 = Transaction.create([user_pk], out * 3)
tx1.sign([user_sk])
inputs = tx1.to_inputs()
tx2 = Transaction.transfer([inputs[0]], out, tx1.id)
tx3 = Transaction.transfer([inputs[1]], out, tx1.id)
tx4 = Transaction.transfer([inputs[2]], out, tx1.id)
txns = [tx.to_dict() for tx in [tx1, tx2, tx3, tx4]]
conn.db.transactions.insert_many(txns)
links = [inputs[0].fulfills.to_dict(), inputs[2].fulfills.to_dict()]
txns = list(query.get_spending_transactions(conn, links))
# tx3 not a member because input 1 not asked for
assert txns == [tx2.to_dict(), tx4.to_dict()]
def test_validation_with_transaction_buffer(b):
from bigchaindb.common.crypto import generate_key_pair
from bigchaindb.models import Transaction
priv_key, pub_key = generate_key_pair()
create_tx = Transaction.create([pub_key], [([pub_key], 10)]).sign([priv_key])
transfer_tx = Transaction.transfer(create_tx.to_inputs(),
[([pub_key], 10)],
asset_id=create_tx.id).sign([priv_key])
double_spend = Transaction.transfer(create_tx.to_inputs(),
[([pub_key], 10)],
asset_id=create_tx.id).sign([priv_key])
assert b.is_valid_transaction(create_tx)
assert b.is_valid_transaction(transfer_tx, [create_tx])
assert not b.is_valid_transaction(create_tx, [create_tx])
assert not b.is_valid_transaction(transfer_tx, [create_tx, transfer_tx])
assert not b.is_valid_transaction(double_spend, [create_tx, transfer_tx])
def test_asset_transfer(b, signed_create_tx, user_pk, user_sk):
from bigchaindb.models import Transaction
tx_transfer = Transaction.transfer(signed_create_tx.to_inputs(),
[([user_pk], 1)], signed_create_tx.id)
tx_transfer_signed = tx_transfer.sign([user_sk])
b.store_bulk_transactions([signed_create_tx])
assert tx_transfer_signed.validate(b) == tx_transfer_signed
assert tx_transfer_signed.asset['id'] == signed_create_tx.id
def test_get_spending_transactions(user_pk, user_sk):
from bigchaindb.backend import connect, query
from bigchaindb.models import Transaction
conn = connect()
out = [([user_pk], 1)]
tx1 = Transaction.create([user_pk], out * 3)
tx1.sign([user_sk])
inputs = tx1.to_inputs()
tx2 = Transaction.transfer([inputs[0]], out, tx1.id).sign([user_sk])
tx3 = Transaction.transfer([inputs[1]], out, tx1.id).sign([user_sk])
tx4 = Transaction.transfer([inputs[2]], out, tx1.id).sign([user_sk])
txns = [deepcopy(tx.to_dict()) for tx in [tx1, tx2, tx3, tx4]]
conn.db.transactions.insert_many(txns)
links = [inputs[0].fulfills.to_dict(), inputs[2].fulfills.to_dict()]
txns = list(query.get_spending_transactions(conn, links))
# tx3 not a member because input 1 not asked for
assert txns == [tx2.to_dict(), tx4.to_dict()]
def test_asset_transfer(b, signed_create_tx, user_pk, user_sk):
from bigchaindb.models import Transaction
tx_transfer = Transaction.transfer(signed_create_tx.to_inputs(), [([user_pk], 1)],
signed_create_tx.id)
tx_transfer_signed = tx_transfer.sign([user_sk])
b.store_bulk_transactions([signed_create_tx])
assert tx_transfer_signed.validate(b) == tx_transfer_signed
assert tx_transfer_signed.asset['id'] == signed_create_tx.id
def test_validation_with_transaction_buffer(b):
from bigchaindb.common.crypto import generate_key_pair
from bigchaindb.models import Transaction
priv_key, pub_key = generate_key_pair()
create_tx = Transaction.create([pub_key], [([pub_key], 10)]).sign([priv_key])
transfer_tx = Transaction.transfer(create_tx.to_inputs(),
[([pub_key], 10)],
asset_id=create_tx.id).sign([priv_key])
double_spend = Transaction.transfer(create_tx.to_inputs(),
[([pub_key], 10)],
asset_id=create_tx.id).sign([priv_key])
assert b.is_valid_transaction(create_tx)
assert b.is_valid_transaction(transfer_tx, [create_tx])
assert not b.is_valid_transaction(create_tx, [create_tx])
assert not b.is_valid_transaction(transfer_tx, [create_tx, transfer_tx])
assert not b.is_valid_transaction(double_spend, [create_tx, transfer_tx])
def test_multiple_in_different_transactions(alice, b, user_pk, user_sk):
from bigchaindb.models import Transaction
# CREATE divisible asset
# `b` creates a divisible asset and assigns 50 shares to `b` and
# 50 shares to `user_pk`
tx_create = Transaction.create([alice.public_key],
[([user_pk], 50), ([alice.public_key], 50)],
asset={'name': random.random()})
tx_create_signed = tx_create.sign([alice.private_key])
# TRANSFER divisible asset
# `b` transfers its 50 shares to `user_pk`
# after this transaction `user_pk` will have a total of 100 shares
# split across two different transactions
tx_transfer1 = Transaction.transfer(tx_create.to_inputs([1]),
[([user_pk], 50)],
asset_id=tx_create.id)
tx_transfer1_signed = tx_transfer1.sign([alice.private_key])
# TRANSFER
# `user_pk` combines two different transaction with 50 shares each and
# transfers a total of 100 shares back to `b`
tx_transfer2 = Transaction.transfer(tx_create.to_inputs([0]) +
tx_transfer1.to_inputs([0]),
[([alice.private_key], 100)],
asset_id=tx_create.id)
tx_transfer2_signed = tx_transfer2.sign([user_sk])
b.store_bulk_transactions(
[tx_create_signed, tx_transfer1_signed, tx_transfer2_signed])
assert tx_transfer2_signed.validate(b) == tx_transfer2_signed
assert len(tx_transfer2_signed.outputs) == 1
assert tx_transfer2_signed.outputs[0].amount == 100
assert len(tx_transfer2_signed.inputs) == 2
fid0_input = tx_transfer2_signed.inputs[0].fulfills.txid
fid1_input = tx_transfer2_signed.inputs[1].fulfills.txid
assert fid0_input == tx_create.id
assert fid1_input == tx_transfer1.id
def test_get_spending_transactions_multiple_inputs():
from bigchaindb.backend import connect, query
from bigchaindb.models import Transaction
from bigchaindb.common.crypto import generate_key_pair
conn = connect()
(alice_sk, alice_pk) = generate_key_pair()
(bob_sk, bob_pk) = generate_key_pair()
(carol_sk, carol_pk) = generate_key_pair()
out = [([alice_pk], 9)]
tx1 = Transaction.create([alice_pk], out).sign([alice_sk])
inputs1 = tx1.to_inputs()
tx2 = Transaction.transfer([inputs1[0]],
[([alice_pk], 6), ([bob_pk], 3)],
tx1.id).sign([alice_sk])
inputs2 = tx2.to_inputs()
tx3 = Transaction.transfer([inputs2[0]],
[([bob_pk], 3), ([carol_pk], 3)],
tx1.id).sign([alice_sk])
inputs3 = tx3.to_inputs()
tx4 = Transaction.transfer([inputs2[1], inputs3[0]],
[([carol_pk], 6)],
tx1.id).sign([bob_sk])
txns = [deepcopy(tx.to_dict()) for tx in [tx1, tx2, tx3, tx4]]
conn.db.transactions.insert_many(txns)
links = [
({'transaction_id': tx2.id, 'output_index': 0}, 1, [tx3.id]),
({'transaction_id': tx2.id, 'output_index': 1}, 1, [tx4.id]),
({'transaction_id': tx3.id, 'output_index': 0}, 1, [tx4.id]),
({'transaction_id': tx3.id, 'output_index': 1}, 0, None),
]
for l, num, match in links:
txns = list(query.get_spending_transactions(conn, [l]))
assert len(txns) == num
if len(txns):
assert [tx['id'] for tx in txns] == match
def test_asset_transfer(b, user_pk, user_sk):
from bigchaindb.models import Transaction
tx_input = b.get_owned_ids(user_pk).pop()
tx_create = b.get_transaction(tx_input.txid)
tx_transfer = Transaction.transfer(tx_create.to_inputs(), [([user_pk], 1)],
tx_create.id)
tx_transfer_signed = tx_transfer.sign([user_sk])
assert tx_transfer_signed.validate(b) == tx_transfer_signed
assert tx_transfer_signed.asset['id'] == tx_create.id
def test_multiple_in_different_transactions(alice, b, user_pk, user_sk):
from bigchaindb.models import Transaction
# CREATE divisible asset
# `b` creates a divisible asset and assigns 50 shares to `b` and
# 50 shares to `user_pk`
tx_create = Transaction.create([alice.public_key], [([user_pk], 50), ([alice.public_key], 50)],
asset={'name': random.random()})
tx_create_signed = tx_create.sign([alice.private_key])
# TRANSFER divisible asset
# `b` transfers its 50 shares to `user_pk`
# after this transaction `user_pk` will have a total of 100 shares
# split across two different transactions
tx_transfer1 = Transaction.transfer(tx_create.to_inputs([1]),
[([user_pk], 50)],
asset_id=tx_create.id)
tx_transfer1_signed = tx_transfer1.sign([alice.private_key])
# TRANSFER
# `user_pk` combines two different transaction with 50 shares each and
# transfers a total of 100 shares back to `b`
tx_transfer2 = Transaction.transfer(tx_create.to_inputs([0]) +
tx_transfer1.to_inputs([0]),
[([alice.private_key], 100)],
asset_id=tx_create.id)
tx_transfer2_signed = tx_transfer2.sign([user_sk])
b.store_bulk_transactions([tx_create_signed, tx_transfer1_signed])
assert tx_transfer2_signed.validate(b) == tx_transfer2_signed
assert len(tx_transfer2_signed.outputs) == 1
assert tx_transfer2_signed.outputs[0].amount == 100
assert len(tx_transfer2_signed.inputs) == 2
fid0_input = tx_transfer2_signed.inputs[0].fulfills.txid
fid1_input = tx_transfer2_signed.inputs[1].fulfills.txid
assert fid0_input == tx_create.id
assert fid1_input == tx_transfer1.id
def test_validate_transfer_asset_id_mismatch(b, signed_create_tx, user_pk, user_sk):
from bigchaindb.common.exceptions import AssetIdMismatch
from bigchaindb.models import Transaction
tx_transfer = Transaction.transfer(signed_create_tx.to_inputs(), [([user_pk], 1)],
signed_create_tx.id)
tx_transfer.asset['id'] = 'a' * 64
tx_transfer_signed = tx_transfer.sign([user_sk])
b.store_bulk_transactions([signed_create_tx])
with pytest.raises(AssetIdMismatch):
tx_transfer_signed.validate(b)
def test_non_create_input_not_found(self, b, user_pk):
from cryptoconditions import Ed25519Sha256
from bigchaindb.common.exceptions import InputDoesNotExist
from bigchaindb.common.transaction import Input, TransactionLink
from bigchaindb.models import Transaction
# Create an input for a non existing transaction
input = Input(Ed25519Sha256(public_key=b58decode(user_pk)),
[user_pk],
TransactionLink('somethingsomething', 0))
tx = Transaction.transfer([input], [([user_pk], 1)],
asset_id='mock_asset_link')
with pytest.raises(InputDoesNotExist):
tx.validate(b)
def test_post_transfer_transaction_endpoint(client, user_pk, user_sk, posted_create_tx):
from bigchaindb.models import Transaction
transfer_tx = Transaction.transfer(posted_create_tx.to_inputs(),
[([user_pk], 1)],
asset_id=posted_create_tx.id)
transfer_tx = transfer_tx.sign([user_sk])
res = client.post(TX_ENDPOINT, data=json.dumps(transfer_tx.to_dict()))
assert res.status_code == 202
assert res.json['inputs'][0]['owners_before'][0] == user_pk
assert res.json['outputs'][0]['public_keys'][0] == user_pk
def test_post_invalid_transfer_transaction_returns_400(client, user_pk, posted_create_tx):
from bigchaindb.models import Transaction
from bigchaindb.common.exceptions import InvalidSignature
transfer_tx = Transaction.transfer(posted_create_tx.to_inputs(),
[([user_pk], 1)],
asset_id=posted_create_tx.id)
transfer_tx._hash()
res = client.post(TX_ENDPOINT, data=json.dumps(transfer_tx.to_dict()))
expected_status_code = 400
expected_error_message = 'Invalid transaction ({}): {}'.format(
InvalidSignature.__name__, 'Transaction signature is invalid.')
assert res.status_code == expected_status_code
assert res.json['message'] == expected_error_message
def test_transfer_single_owner_single_input(self, b, inputs, user_pk,
user_sk):
from bigchaindb.common import crypto
from bigchaindb.models import Transaction
user2_sk, user2_pk = crypto.generate_key_pair()
tx_link = b.fastquery.get_outputs_by_public_key(user_pk).pop()
input_tx = b.get_transaction(tx_link.txid)
inputs = input_tx.to_inputs()
tx = Transaction.transfer(inputs, [([user2_pk], 1)],
asset_id=input_tx.id)
tx = tx.sign([user_sk])
# validate transaction
tx.validate(b)
assert len(tx.inputs) == 1
assert len(tx.outputs) == 1
def test_validation_worker_process_multiple_transactions(b):
import multiprocessing as mp
from bigchaindb.parallel_validation import ValidationWorker, RESET, EXIT
keypair = generate_key_pair()
create_tx, transfer_tx = generate_create_and_transfer(keypair)
double_spend = Transaction.transfer(
create_tx.to_inputs(),
[([keypair.public_key], 10)],
asset_id=create_tx.id).sign([keypair.private_key])
in_queue, results_queue = mp.Queue(), mp.Queue()
vw = ValidationWorker(in_queue, results_queue)
# Note: in the following instructions, the worker will encounter two
# `RESET` messages, and an `EXIT` message. When a worker processes a
# `RESET` message, it forgets all transactions it has validated. This allow
# us to re-validate the same transactions. This won't happen in real life,
# but it's quite handy to check if the worker actually forgot about the
# past transactions (if not, it will return `False` because the
# transactions look like a double spend).
# `EXIT` makes the worker to stop the infinite loop.
in_queue.put((0, create_tx.to_dict()))
in_queue.put((10, transfer_tx.to_dict()))
in_queue.put((20, double_spend.to_dict()))
in_queue.put(RESET)
in_queue.put((0, create_tx.to_dict()))
in_queue.put((5, transfer_tx.to_dict()))
in_queue.put(RESET)
in_queue.put((20, create_tx.to_dict()))
in_queue.put((25, double_spend.to_dict()))
in_queue.put((30, transfer_tx.to_dict()))
in_queue.put(EXIT)
vw.run()
assert results_queue.get() == (0, create_tx)
assert results_queue.get() == (10, transfer_tx)
assert results_queue.get() == (20, False)
assert results_queue.get() == (0, create_tx)
assert results_queue.get() == (5, transfer_tx)
assert results_queue.get() == (20, create_tx)
assert results_queue.get() == (25, double_spend)
assert results_queue.get() == (30, False)