def test_surrogate_chain_when_invalid_chain(clone_blockchain):
blockchain = Blockchain()
clone_blockchain.chain[1].hash = "invalidate"
with pytest.raises(Exception, match="Invalid chain."):
blockchain.surrogate_chain(clone_blockchain.chain)
@app.route("/transactions")
def tx_route():
return jsonify(transaction_pool.serialize_to_json())
ROOT_PORT = 5000
PORT = ROOT_PORT
# peer instance, supports up to 1,000 peers
if os.environ.get("PEER") == "True":
PORT = random.randint(5001, 6000)
# fetch blockchain instance
res = requests.get(f"http://localhost:{ROOT_PORT}/blockchain")
res_blockchain = Blockchain.deserialize_from_json(res.json())
try:
blockchain.surrogate_chain(res_blockchain)
print("\n -- Successfully synchronized local blockchain instance.")
except Exception as err:
print(f"\n -- Error synchronizing local blockchain instance. See: {err}")
# seeded test instance - creates 10 blocks w/2 Tx ea
if os.environ.get("SEED") == "True":
for i in range(10):
blockchain.add_block([
Transaction(Wallet(),Wallet().address, random.randint(2, 50)).serialize_to_json(),
Transaction(Wallet(),Wallet().address, random.randint(2, 50)).serialize_to_json()
])
# set Tx in pool
for i in range(3):
transaction_pool.set_transaction(
Transaction(Wallet(),Wallet().address, random.randint(2, 50))
def test_surrogate_chain(clone_blockchain):
blockchain = Blockchain()
blockchain.surrogate_chain(clone_blockchain.chain)
assert blockchain.chain == clone_blockchain.chain
