def test_is_transaction_chain_valid_corrupt_transaction(blockchain_ten_blocks):
corrupt_transaction = Transaction(Wallet(), 'recipient', 1)
corrupt_transaction.input['signature'] = Wallet().sign({"a": "b"})
blockchain_ten_blocks.add_block([corrupt_transaction.to_json()])
with pytest.raises(Exception):
BlockChain.is_transaction_chain_valid(blockchain_ten_blocks.chain)
def test_is_transaction_chain_valid_multiple_rewards(blockchain_ten_blocks):
reward1 = Transaction.reward(Wallet()).to_json()
reward2 = Transaction.reward(Wallet()).to_json()
blockchain_ten_blocks.add_block([reward1, reward2])
with pytest.raises(Exception, match="Duplicate mining reward in block"):
BlockChain.is_transaction_chain_valid(blockchain_ten_blocks.chain)
def test_is_transaction_chain_valid_balance_tillnow(blockchain_ten_blocks):
wallet = Wallet()
corrupt_transaction = Transaction(wallet, "abcd", 10)
corrupt_transaction.output[wallet.address] = 9000
corrupt_transaction.input['amount'] = 9010
corrupt_transaction.input['signature'] = wallet.sign(
corrupt_transaction.output)
blockchain_ten_blocks.add_block([corrupt_transaction.to_json()])
with pytest.raises(Exception):
BlockChain.is_transaction_chain_valid(blockchain_ten_blocks.chain)
def test_is_transaction_chain_valid_duplicate_transactions(
blockchain_ten_blocks):
blockchain_ten_blocks.chain.append(blockchain_ten_blocks.chain[3])
with pytest.raises(Exception, match="is not unique"):
BlockChain.is_transaction_chain_valid(blockchain_ten_blocks.chain)
def test_is_transaction_chain_valid(blockchain_ten_blocks):
BlockChain.is_transaction_chain_valid(blockchain_ten_blocks.chain)