def test_blockchain_is_valid_transaction_data_duplicate_transaction(self):
transaction = self._generate_transaction()
self.blockchain.add_block([transaction.info, transaction.info])
err_message = 'Repetead transaction uuid found'
with self.assertRaises(BlockchainError) as err:
Blockchain.is_valid_transaction_data(self.blockchain.chain)
self.assertIsInstance(err, BlockchainError)
self.assertIn(err_message, err.message)
def test_blockchain_is_valid_transaction_data_multiple_rewards(self):
reward_transaction_1 = Transaction.reward_mining(Wallet())
reward_transaction_2 = Transaction.reward_mining(Wallet())
self.blockchain.add_block(
[reward_transaction_1.info, reward_transaction_2.info])
err_message = 'Multiple mining rewards in the same block'
with self.assertRaises(BlockchainError) as err:
Blockchain.is_valid_transaction_data(self.blockchain.chain)
self.assertIsInstance(err, BlockchainError)
self.assertIn(err_message, err.message)
def test_blockchain_is_valid_transaction_data_invalid_transaction(self):
invalid_transaction = self._generate_transaction()
invalid_transaction.input['signature'] = Wallet().sign(
invalid_transaction.output)
self.blockchain.add_block([invalid_transaction.info])
err_message = 'Invalid transaction'
with self.assertRaises(BlockchainError) as err:
Blockchain.is_valid_transaction_data(self.blockchain.chain)
self.assertIsInstance(err, BlockchainError)
self.assertIn(err_message, err.message)
def test_blockchain_is_valid_transaction_invalid_historic_balance(self):
wallet = Wallet()
invalid_transaction = self._generate_transaction(wallet)
invalid_transaction.output[wallet.address] = 1000
invalid_transaction.input['amount'] = 1001
invalid_transaction.input['signature'] = wallet.sign(
invalid_transaction.output)
self.blockchain.add_block([invalid_transaction.info])
err_message = 'historic balance inconsistency'
with self.assertRaises(BlockchainError) as err:
Blockchain.is_valid_transaction_data(self.blockchain.chain)
self.assertIsInstance(err, BlockchainError)
self.assertIn(err_message, err.message)
def test_blockchain_is_valid_transaction_data(self):
Blockchain.is_valid_transaction_data(self.blockchain.chain)