def test_clear_transactions_added_to_blockchain():
transaction_pool = TransactionPool()
transaction_1 = Transaction(Wallet(), "abcd", 10)
transaction_2 = Transaction(Wallet(), "abcd", 30)
transaction_pool.add_transaction(transaction_1)
transaction_pool.add_transaction(transaction_2)
blockchain = BlockChain()
blockchain.add_block([transaction_1.to_json(), transaction_2.to_json()])
assert transaction_1.id in transaction_pool.all_transactions
assert transaction_2.id in transaction_pool.all_transactions
transaction_pool.clear_transactions_added_to_blockchain(blockchain)
assert not transaction_1.id in transaction_pool.all_transactions
assert not transaction_2.id in transaction_pool.all_transactions
def test_calculate_balance():
blockchain = BlockChain()
wallet = Wallet()
assert wallet.calculate_balance(blockchain,
wallet.address) == STARTING_BALANCE
sent_amount = 100
transaction = Transaction(wallet, "abcd", sent_amount)
blockchain.add_block([transaction.to_json()])
assert wallet.calculate_balance(
blockchain, wallet.address) == STARTING_BALANCE - sent_amount
received_amount_1 = 100
received_1 = Transaction(Wallet(), wallet.address, received_amount_1)
received_amount_2 = 100
received_2 = Transaction(Wallet(), wallet.address, received_amount_2)
blockchain.add_block([received_1.to_json(), received_2.to_json()])
assert wallet.calculate_balance(blockchain, wallet.address) == STARTING_BALANCE - \
sent_amount + received_amount_1 + received_amount_2
known_address.update(transaction['output'].keys())
return jsonify(list(known_address))
@app.route('/all-transactions')
def route_all_transactions():
return jsonify(transaction_pool.transaction_data())
PORT = 5000
if os.environ.get('SEED_DATA') == 'True':
for i in range(10):
blockchain.add_block([
Transaction(Wallet(),
Wallet().address, random.randint(2, 20)).to_json(),
Transaction(Wallet(),
Wallet().address, random.randint(2, 20)).to_json()
])
for i in range(5):
transaction_pool.add_transaction(
Transaction(Wallet(),
Wallet().address, random.randint(2, 50)))
if os.environ.get('PEER') == "True":
result = requests.get('http://localhost:5000/blockchain')
full_blockchain = BlockChain.from_json(result.json())
PORT = random.randint(5001, 6000)
try:
blockchain.replace_chain(full_blockchain.chain)
print("\n -- Successfully synchronized the local blockchain")
def blockchain_ten_blocks():
blockchain = BlockChain()
for i in range(5):
blockchain.add_block([Transaction(Wallet(), 'abcd', i).to_json()])
return blockchain
def test_add_block():
blockchain = BlockChain()
data = "test_data"
blockchain.add_block(data)
assert blockchain.chain[1].data == data
from backend.blockchain.blockchain import BlockChain
import time
from backend.config import SECONDS
blockchain = BlockChain()
times = []
for i in range(100):
start_time = time.time_ns()
blockchain.add_block(i)
time_to_mine = (time.time_ns() - start_time) / SECONDS
times.append(time_to_mine)
print(f"Time to mine: {time_to_mine}")
print(f"Difficulty of the block: {blockchain.chain[-1].difficulty}")
print(f"Average time to mine: {sum(times)/len(times)}")
print(sum(times) / len(times))