def test_replace_chain_invalid_incoming_chain(blockchain_ten_blocks):
blockchain = BlockChain()
blockchain_ten_blocks.chain[1].hash = "tampered hash"
with pytest.raises(Exception,
match="Cannot replace. The incoming chain is invalid"):
blockchain.replace_chain(blockchain_ten_blocks.chain)
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")
except Exception as e:
print(f"\n -- Failed to Synchroniz the local blockchain: {e}")
app.run(port=PORT)
#serve(TransLogger(app, setup_console_handler=True))
def test_replace_chain(blockchain_ten_blocks):
blockchain = BlockChain()
blockchain.replace_chain(blockchain_ten_blocks.chain)
assert blockchain.chain == blockchain_ten_blocks.chain