def test_invalid_transaction_initialization():
from bigchaindb_common.transaction import Transaction, Asset
with raises(ValueError):
Transaction(operation='invalid operation', asset=Asset())
with raises(TypeError):
Transaction(operation='CREATE', asset='invalid asset')
with raises(TypeError):
Transaction(
operation='CREATE',
asset=Asset(),
conditions='invalid conditions'
)
with raises(TypeError):
Transaction(
operation='CREATE',
asset=Asset(),
conditions=[],
fulfillments='invalid fulfillments'
)
with raises(TypeError):
Transaction(
operation='CREATE',
asset=Asset(),
conditions=[],
fulfillments=[],
metadata='invalid metadata'
)
def test_multiple_fulfillment_validation_of_transfer_tx(user_ffill, user_cond,
user_priv, user2_pub,
user2_priv, user3_pub,
user3_priv):
from copy import deepcopy
from bigchaindb_common.transaction import (Transaction, TransactionLink,
Fulfillment, Condition, Asset)
from cryptoconditions import Ed25519Fulfillment
tx = Transaction(Transaction.CREATE, Asset(),
[user_ffill, deepcopy(user_ffill)],
[user_cond, deepcopy(user_cond)])
tx.sign([user_priv])
fulfillments = [Fulfillment(cond.fulfillment, cond.owners_after,
TransactionLink(tx.id, index))
for index, cond in enumerate(tx.conditions)]
conditions = [Condition(Ed25519Fulfillment(public_key=user3_pub),
[user3_pub]),
Condition(Ed25519Fulfillment(public_key=user3_pub),
[user3_pub])]
transfer_tx = Transaction('TRANSFER', tx.asset, fulfillments, conditions)
transfer_tx = transfer_tx.sign([user_priv])
assert transfer_tx.fulfillments_valid(tx.conditions) is True
def transfer_utx(user_cond, user2_cond, utx):
from bigchaindb_common.transaction import (Fulfillment, TransactionLink,
Transaction, Asset)
user_cond = user_cond.to_dict()
ffill = Fulfillment(utx.conditions[0].fulfillment,
user_cond['owners_after'], TransactionLink(utx.id, 0))
return Transaction('TRANSFER', Asset(), [ffill], [user2_cond])
def test_validate_multiple_fulfillments(user_ffill, user_cond, user_priv):
from copy import deepcopy
from bigchaindb_common.crypto import SigningKey
from bigchaindb_common.transaction import Transaction, Asset
tx = Transaction(Transaction.CREATE, Asset(),
[user_ffill, deepcopy(user_ffill)],
[user_ffill, deepcopy(user_cond)])
expected_first = deepcopy(tx)
expected_second = deepcopy(tx)
expected_first.fulfillments = [expected_first.fulfillments[0]]
expected_first.conditions = [expected_first.conditions[0]]
expected_second.fulfillments = [expected_second.fulfillments[1]]
expected_second.conditions = [expected_second.conditions[1]]
expected_first_bytes = str(expected_first).encode()
expected_first.fulfillments[0].fulfillment.sign(expected_first_bytes,
SigningKey(user_priv))
expected_second_bytes = str(expected_second).encode()
expected_second.fulfillments[0].fulfillment.sign(expected_second_bytes,
SigningKey(user_priv))
tx.sign([user_priv])
assert tx.fulfillments[0].to_dict()['fulfillment'] == \
expected_first.fulfillments[0].fulfillment.serialize_uri()
assert tx.fulfillments[1].to_dict()['fulfillment'] == \
expected_second.fulfillments[0].fulfillment.serialize_uri()
assert tx.fulfillments_valid() is True
def test_add_condition_to_tx(user_cond):
from bigchaindb_common.transaction import Transaction, Asset
tx = Transaction(Transaction.CREATE, Asset())
tx.add_condition(user_cond)
assert len(tx.conditions) == 1
def test_add_fulfillment_to_tx(user_ffill):
from bigchaindb_common.transaction import Transaction, Asset
tx = Transaction(Transaction.CREATE, Asset(), [], [])
tx.add_fulfillment(user_ffill)
assert len(tx.fulfillments) == 1
def test_transaction_deserialization(user_ffill, user_cond, data, data_id):
from bigchaindb_common.transaction import Transaction, Asset
timestamp = '66666666666'
expected_asset = Asset(data, data_id)
expected = Transaction(Transaction.CREATE, expected_asset, [user_ffill],
[user_cond], None, timestamp, Transaction.VERSION)
tx = {
'version': Transaction.VERSION,
'transaction': {
# NOTE: This test assumes that Fulfillments and Conditions can
# successfully be serialized
'fulfillments': [user_ffill.to_dict()],
'conditions': [user_cond.to_dict()],
'operation': Transaction.CREATE,
'timestamp': timestamp,
'metadata': None,
'asset': {
'id': data_id,
'divisible': False,
'updatable': False,
'refillable': False,
'data': data,
}
}
}
tx_no_signatures = Transaction._remove_signatures(tx)
tx['id'] = Transaction._to_hash(Transaction._to_str(tx_no_signatures))
tx = Transaction.from_dict(tx)
assert tx == expected
def test_transaction_serialization(user_ffill, user_cond, data, data_id):
from bigchaindb_common.transaction import Transaction, Asset
tx_id = 'l0l'
timestamp = '66666666666'
expected = {
'id': tx_id,
'version': Transaction.VERSION,
'transaction': {
# NOTE: This test assumes that Fulfillments and Conditions can
# successfully be serialized
'fulfillments': [user_ffill.to_dict(0)],
'conditions': [user_cond.to_dict(0)],
'operation': Transaction.CREATE,
'timestamp': timestamp,
'metadata': None,
'asset': {
'id': data_id,
'divisible': False,
'updatable': False,
'refillable': False,
'data': data,
}
}
}
tx = Transaction(Transaction.CREATE, Asset(data, data_id), [user_ffill],
[user_cond])
tx_dict = tx.to_dict()
tx_dict['id'] = tx_id
tx_dict['transaction']['asset']['id'] = data_id
tx_dict['transaction']['timestamp'] = timestamp
assert tx_dict == expected
def test_create_default_asset_on_tx_initialization():
from bigchaindb_common.transaction import Transaction, Asset
tx = Transaction(Transaction.CREATE, None)
expected = Asset()
asset = tx.asset
expected.data_id = None
asset.data_id = None
assert asset == expected
def test_validate_tx_simple_create_signature(user_ffill, user_cond, user_priv):
from copy import deepcopy
from bigchaindb_common.crypto import SigningKey
from bigchaindb_common.transaction import Transaction, Asset
tx = Transaction(Transaction.CREATE, Asset(), [user_ffill], [user_cond])
expected = deepcopy(user_cond)
expected.fulfillment.sign(str(tx).encode(), SigningKey(user_priv))
tx.sign([user_priv])
assert tx.fulfillments[0].to_dict()['fulfillment'] == \
expected.fulfillment.serialize_uri()
assert tx.fulfillments_valid() is True
def utx(user_ffill, user_cond):
from bigchaindb_common.transaction import Transaction, Asset
return Transaction(Transaction.CREATE, Asset(), [user_ffill], [user_cond])
def test_add_condition_to_tx_with_invalid_parameters():
from bigchaindb_common.transaction import Transaction, Asset
tx = Transaction(Transaction.CREATE, Asset(), [], [])
with raises(TypeError):
tx.add_condition('somewronginput')
def test_cant_add_empty_fulfillment():
from bigchaindb_common.transaction import Transaction
tx = Transaction(Transaction.CREATE, None)
with raises(TypeError):
tx.add_fulfillment(None)