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bigchaindb/tests/assets/test_divisible_assets.py

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# Copyright BigchainDB GmbH and BigchainDB contributors
# SPDX-License-Identifier: (Apache-2.0 AND CC-BY-4.0)
# Code is Apache-2.0 and docs are CC-BY-4.0
import pytest
import random
from bigchaindb.common.exceptions import DoubleSpend
# CREATE divisible asset
# Single input
# Single owners_before
# Single output
# Single owners_after
def test_single_in_single_own_single_out_single_own_create(alice, user_pk, b):
from bigchaindb.models import Transaction
tx = Transaction.create([alice.public_key], [([user_pk], 100)], asset={'name': random.random()})
tx_signed = tx.sign([alice.private_key])
assert tx_signed.validate(b) == tx_signed
assert len(tx_signed.outputs) == 1
assert tx_signed.outputs[0].amount == 100
assert len(tx_signed.inputs) == 1
# CREATE divisible asset
# Single input
# Single owners_before
# Multiple outputs
# Single owners_after per output
def test_single_in_single_own_multiple_out_single_own_create(alice, user_pk, b):
from bigchaindb.models import Transaction
tx = Transaction.create([alice.public_key], [([user_pk], 50), ([user_pk], 50)],
asset={'name': random.random()})
tx_signed = tx.sign([alice.private_key])
assert tx_signed.validate(b) == tx_signed
assert len(tx_signed.outputs) == 2
assert tx_signed.outputs[0].amount == 50
assert tx_signed.outputs[1].amount == 50
assert len(tx_signed.inputs) == 1
# CREATE divisible asset
# Single input
# Single owners_before
# Single output
# Multiple owners_after
def test_single_in_single_own_single_out_multiple_own_create(alice, user_pk, b):
from bigchaindb.models import Transaction
tx = Transaction.create([alice.public_key], [([user_pk, user_pk], 100)], asset={'name': random.random()})
tx_signed = tx.sign([alice.private_key])
assert tx_signed.validate(b) == tx_signed
assert len(tx_signed.outputs) == 1
assert tx_signed.outputs[0].amount == 100
output = tx_signed.outputs[0].to_dict()
assert 'subconditions' in output['condition']['details']
assert len(output['condition']['details']['subconditions']) == 2
assert len(tx_signed.inputs) == 1
# CREATE divisible asset
# Single input
# Single owners_before
# Multiple outputs
# Mix: one output with a single owners_after, one output with multiple
# owners_after
def test_single_in_single_own_multiple_out_mix_own_create(alice, user_pk, b):
from bigchaindb.models import Transaction
tx = Transaction.create([alice.public_key], [([user_pk], 50), ([user_pk, user_pk], 50)],
asset={'name': random.random()})
tx_signed = tx.sign([alice.private_key])
assert tx_signed.validate(b) == tx_signed
assert len(tx_signed.outputs) == 2
assert tx_signed.outputs[0].amount == 50
assert tx_signed.outputs[1].amount == 50
output_cid1 = tx_signed.outputs[1].to_dict()
assert 'subconditions' in output_cid1['condition']['details']
assert len(output_cid1['condition']['details']['subconditions']) == 2
assert len(tx_signed.inputs) == 1
# CREATE divisible asset
# Single input
# Multiple owners_before
# Output combinations already tested above
def test_single_in_multiple_own_single_out_single_own_create(alice, b, user_pk,
user_sk):
from bigchaindb.models import Transaction
from bigchaindb.common.transaction import _fulfillment_to_details
tx = Transaction.create([alice.public_key, user_pk], [([user_pk], 100)], asset={'name': random.random()})
tx_signed = tx.sign([alice.private_key, user_sk])
assert tx_signed.validate(b) == tx_signed
assert len(tx_signed.outputs) == 1
assert tx_signed.outputs[0].amount == 100
assert len(tx_signed.inputs) == 1
ffill = _fulfillment_to_details(tx_signed.inputs[0].fulfillment)
assert 'subconditions' in ffill
assert len(ffill['subconditions']) == 2
# TRANSFER divisible asset
# Single input
# Single owners_before
# Single output
# Single owners_after
def test_single_in_single_own_single_out_single_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], 100)],
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)
assert len(tx_transfer_signed.outputs) == 1
assert tx_transfer_signed.outputs[0].amount == 100
assert len(tx_transfer_signed.inputs) == 1
# TRANSFER divisible asset
# Single input
# Single owners_before
# Multiple output
# Single owners_after
def test_single_in_single_own_multiple_out_single_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], 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
assert len(tx_transfer_signed.inputs) == 1
# TRANSFER divisible asset
# Single input
# Single owners_before
# Single output
# Multiple owners_after
def test_single_in_single_own_single_out_multiple_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, alice.public_key], 100)],
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) == 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
b.store_bulk_transactions([tx_transfer_signed])
with pytest.raises(DoubleSpend):
tx_transfer_signed.validate(b)
# TRANSFER divisible asset
# Single input
# Single owners_before
# Multiple outputs
# Mix: one output with a single owners_after, one output with multiple
# owners_after
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)
# TRANSFER divisible asset
# Single input
# Multiple owners_before
# Single output
# Single owners_after
def test_single_in_multiple_own_single_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], [([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], 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) == 1
ffill = _fulfillment_to_details(tx_transfer_signed.inputs[0].fulfillment)
assert 'subconditions' in ffill
assert len(ffill['subconditions']) == 2
b.store_bulk_transactions([tx_transfer_signed])
with pytest.raises(DoubleSpend):
tx_transfer_signed.validate(b)
# TRANSFER divisible asset
# Multiple inputs
# Single owners_before per input
# Single output
# Single owners_after
def test_multiple_in_single_own_single_out_single_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], 50), ([user_pk], 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([user_sk])
b.store_bulk_transactions([tx_create_signed])
assert tx_transfer_signed.validate(b)
assert len(tx_transfer_signed.outputs) == 1
assert tx_transfer_signed.outputs[0].amount == 100
assert len(tx_transfer_signed.inputs) == 2
b.store_bulk_transactions([tx_transfer_signed])
with pytest.raises(DoubleSpend):
tx_transfer_signed.validate(b)
# TRANSFER divisible asset
# Multiple inputs
# Multiple owners_before per input
# Single output
# Single owners_after
def test_multiple_in_multiple_own_single_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, alice.public_key], 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' in ffill_fid0
assert 'subconditions' in ffill_fid1
assert len(ffill_fid0['subconditions']) == 2
assert len(ffill_fid1['subconditions']) == 2
b.store_bulk_transactions([tx_transfer_signed])
with pytest.raises(DoubleSpend):
tx_transfer_signed.validate(b)
# TRANSFER divisible asset
# Multiple inputs
# Mix: one input with a single owners_before, one input with multiple
# owners_before
# Single output
# Single owners_after
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)
# TRANSFER divisible asset
# Multiple inputs
# Mix: one input with a single owners_before, one input with multiple
# owners_before
# Multiple outputs
# Mix: one output with a single owners_after, one output with multiple
# owners_after
def test_muiltiple_in_mix_own_multiple_out_mix_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], 50), ([alice.public_key, user_pk], 50)],
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) == 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
b.store_bulk_transactions([tx_transfer_signed])
with pytest.raises(DoubleSpend):
tx_transfer_signed.validate(b)
# TRANSFER divisible asset
# Multiple inputs from different transactions
# Single owners_before
# Single output
# Single owners_after
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
# In a TRANSFER transaction of a divisible asset the amount being spent in the
# inputs needs to match the amount being sent in the outputs.
# In other words `amount_in_inputs - amount_in_outputs == 0`
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_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_sum_amount(alice, b, user_pk, user_sk):
from bigchaindb.models import Transaction
# CREATE divisible asset with 3 outputs with amount 1
tx_create = Transaction.create([alice.public_key], [([user_pk], 1), ([user_pk], 1), ([user_pk], 1)],
asset={'name': random.random()})
tx_create_signed = tx_create.sign([alice.private_key])
# create a transfer transaction with one output and check if the amount
# is 3
tx_transfer = Transaction.transfer(tx_create.to_inputs(), [([alice.public_key], 3)],
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) == 1
assert tx_transfer_signed.outputs[0].amount == 3
b.store_bulk_transactions([tx_transfer_signed])
with pytest.raises(DoubleSpend):
tx_transfer_signed.validate(b)
def test_divide(alice, b, user_pk, user_sk):
from bigchaindb.models import Transaction
# CREATE divisible asset with 1 output with amount 3
tx_create = Transaction.create([alice.public_key], [([user_pk], 3)], asset={'name': random.random()})
tx_create_signed = tx_create.sign([alice.private_key])
# create a transfer transaction with 3 outputs and check if the amount
# of each output is 1
tx_transfer = Transaction.transfer(tx_create.to_inputs(),
[([alice.public_key], 1), ([alice.public_key], 1), ([alice.public_key], 1)],
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) == 3
for output in tx_transfer_signed.outputs:
assert output.amount == 1
b.store_bulk_transactions([tx_transfer_signed])
with pytest.raises(DoubleSpend):
tx_transfer_signed.validate(b)
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