def test_valid_reward_transaction():
reward_transaction = Transaction.reward_transaction(Wallet())
Transaction.is_valid_transaction(reward_transaction)
def test_invalid_reward_transaction_extra_recipient():
reward_transaction = Transaction.reward_transaction(Wallet())
reward_transaction.output['extra_recipient'] = 50
with pytest.raises(Exception, match="Invalid mining reward"):
Transaction.is_valid_transaction(reward_transaction)
def test_is_valid_transaction_chain_duplicate_transactions(blockchain_three_blocks):
transaction = Transaction(Wallet(), 'recipient', 1).to_json()
blockchain_three_blocks.add_block([transaction, transaction])
with pytest.raises(Exception, match='is not unique'):
Blockchain.is_valid_transaction_chain(blockchain_three_blocks.chain)
def test_valid_transaction_with_invalid_outputs():
sender_wallet = Wallet()
transaction = Transaction(sender_wallet, 'recipient', 50)
transaction.output[sender_wallet.address] = 9001
with pytest.raises(Exception, match='Invalid transaction output values'):
Transaction.is_valid_transaction(transaction)
def test_reward_transaction():
miner_wallet = Wallet()
transaction = Transaction.reward_transaction(miner_wallet)
assert transaction.input == MINING_REWARD_INPUT
assert transaction.output[miner_wallet.address] == MINING_REWARD
def test_transaction_exceed_balance():
with pytest.raises(Exception, match="Amount exceeds balance"):
Transaction(Wallet(), "recipient", 9001)
def test_transaction_exceeds_balance():
with pytest.raises(Exception, match='Amount exceeds balance'):
Transaction(Wallet(), 'testwallet', 1039)
def test_valid_transaction():
Transaction.is_valid_transaction(Transaction(Wallet(), 'recipient', 50))
def test_invalid_transaction_chain_duplicate_transactions(blockchain_init):
transaction = Transaction(Wallet(), "recipient", 1).to_json()
blockchain_init.add_block([transaction, transaction])
with pytest.raises(Exception, match="is not unique."):
Blockchain.is_valid_transaction_chain(blockchain_init.chain)
def blockchain_ten_blocks():
blockchain = BlockChain()
for i in range(5):
blockchain.add_block([Transaction(Wallet(), 'abcd', i).to_json()])
return blockchain
def blockchain_init():
blockchain = Blockchain()
for i in range(3):
blockchain.add_block([Transaction(Wallet(), "recipient", i).to_json()])
return blockchain
def test_is_valid_transaction_chain_bad_transaction(blockchain_three_blocks):
bad_transaction = Transaction(Wallet(), 'recipient', 1)
bad_transaction.input['signature'] = Wallet().sign(bad_transaction.output)
blockchain_three_blocks.add_block([bad_transaction.to_json()])
with pytest.raises(Exception):
Blockchain.is_valid_transaction_chain(blockchain_three_blocks.chain)
def test_valid_transaction_with_invalid_signature():
transaction = Transaction(Wallet(), "recipient", 50)
transaction.input["signature"] = Wallet().sign(transaction.output)
with pytest.raises(Exception, match="Invalid signature"):
Transaction.is_valid_transaction(transaction)
def test_transaction_exceeds_balance():
with pytest.raises(Exception, match='Amount exceeds balance'):
Transaction(Wallet(), 'recipient', 9001)
def test_set_transaction():
transaction_pool = TransactionPool()
transaction = Transaction(Wallet(), "adc193bd", 1)
transaction_pool.set_transaction(transaction)
assert transaction_pool.transaction_map[transaction.id] == transaction
def test_transaction_update_exceeds_balance():
sender_wallet = Wallet()
transaction = Transaction(sender_wallet, 'recipient', 50)
with pytest.raises(Exception, match='Amount exceeds balance'):
transaction.update(sender_wallet, 'new_recipient', 9001)
def test_set_transaction():
transaction_pool = TransactionPool()
transaction = Transaction(Wallet(), 'recipient', 1)
transaction_pool.set_transaction(transaction)
assert transaction_pool.transaction_map[transaction.id] == transaction
def test_valid_transaction_with_invalid_signature():
transaction = Transaction(Wallet(), 'recipient', 50)
transaction.input['signature'] = Wallet().sign(transaction.output)
with pytest.raises(Exception, match='Invalid signature'):
Transaction.is_valid_transaction(transaction)
def blockchain_three_blocks():
blockchain = Blockchain()
for i in range(3):
blockchain.add_block([Transaction(Wallet(), 'recipient', i).to_json()])
return blockchain
return jsonify(list(know_addresses))
PORT = config('PORT')
url = config('API_URL')
api_url = f'{url}:{PORT}'
if os.environ.get('PEER') == 'True':
PORT = random.randint(5001, 6000)
result = requests.get(f'{api_url}/blockchain')
result_blockchain = Blockchain.from_json(result.json())
try:
blockchain.replace_chain(result_blockchain.chain)
print('\n -- Successfully synchronized the local chain')
except Exception as e:
print(f'\n -- Error synchronizing: {e}')
if os.environ.get('SEED_DATA') == 'True':
for i in range(15):
blockchain.add_block([
Transaction(Wallet(),
Wallet().address, random.randint(2, 50)).to_json(),
Transaction(Wallet(),
Wallet().address, random.randint(2, 50)).to_json()
])
app.run(port=PORT)
def test_transaction_exceeds_balance():
with pytest.raises(Exception):
Transaction(Wallet(), 'recipient', 9001)
