def test_transaction_chain_when_tx_malformatted(clone_blockchain):
malformed_tx_instance = Transaction(Wallet(), "b13b2bf4", 1)
# sign with different wallet
malformed_tx_instance.input["signature"] = Wallet().gen_signature(
malformed_tx_instance.output)
clone_blockchain.add_block([malformed_tx_instance.serialize_to_json()])
with pytest.raises(Exception):
Blockchain.is_tx_chain_valid(clone_blockchain.chain)
def test_transaction_chain_when_duplicate_rewards(clone_blockchain):
reward_1 = Transaction.generate_reward_transaction(
Wallet()).serialize_to_json()
reward_2 = Transaction.generate_reward_transaction(
Wallet()).serialize_to_json()
clone_blockchain.add_block([reward_1, reward_2])
with pytest.raises(Exception,
match="There can only be one mining reward per block."):
Blockchain.is_tx_chain_valid(clone_blockchain.chain)
def test_transaction_chain_when_invalid_balance_provenance(clone_blockchain):
wallet = Wallet()
malformed_tx_instance = Transaction(Wallet(), "b13b2bf4", 1)
malformed_tx_instance.output[wallet.address] = 9000
malformed_tx_instance.input["amount"] = 9001
malformed_tx_instance.input["signature"] = wallet.gen_signature(
malformed_tx_instance.output)
clone_blockchain.add_block([malformed_tx_instance.serialize_to_json()])
with pytest.raises(Exception, match="contains an invalid input amount"):
Blockchain.is_tx_chain_valid(clone_blockchain.chain)
def test_transaction_chain_when_duplicate_tx(clone_blockchain):
tx_instance = Transaction(Wallet(), "b13b2bf4", 1).serialize_to_json()
clone_blockchain.add_block([tx_instance, tx_instance])
with pytest.raises(Exception, match="is not unique;"):
Blockchain.is_tx_chain_valid(clone_blockchain.chain)
def test_transaction_chain(clone_blockchain):
Blockchain.is_tx_chain_valid(clone_blockchain.chain)
