def test_fraudulent_tx_source_other_user(self):
blockchain = Blockchain()
victim = generate_key()
miner_key = generate_key()
miner = Miner(blockchain)
miner.reward_addr = miner_key.publickey()
emptyblock = miner._mine()
transfer = Wallet(miner_key, blockchain)
transfer.send(10, victim.publickey())
self.assertEqual(len(emptyblock.transactions), 1)
self._test_fraudulent_tx(victim, blockchain)
def wallet_send(data):
l = json.loads(data)
key = RSAKey(RSAPublicKey.load(l.get('public_key')),
RSAPrivateKey.load(l.get('private_key')))
wallet = Wallet(key, blockchain)
try:
wallet.send(l.get('amount'), l.get('recipient'))
except InsufficientFundsException:
return json.dumps({
"successful": False,
"message": "Insufficient funds"
})
return json.dumps({"successful": True})
def test_chained_tx(self):
blockchain = Blockchain()
member1 = generate_key()
member2 = generate_key()
member3 = generate_key()
miner = Miner(blockchain)
miner.reward_addr = member1.publickey()
_ = miner._mine()
wallet1 = Wallet(member1, blockchain)
wallet1.send(10, member2.publickey())
wallet2 = Wallet(member2, blockchain)
wallet2.send(10, member3.publickey())
wallet3 = Wallet(member3, blockchain)
self.assertEqual(wallet1.balance(), 0)
self.assertEqual(wallet2.balance(), 0)
self.assertEqual(wallet3.balance(), 10)
def test_value_transfer(self):
"""
Test successful transaction
"""
SENDER_ORIG_VALUE = MINING_REWARD # Mining reward
SEND_AMOUNT = 5
blockchain = Blockchain()
sender = generate_key()
receiver = generate_key()
miner_key = generate_key()
# This is an empty blockchain so create value out of thin air.
miner = Miner(blockchain)
miner.reward_addr = sender.publickey()
emptyblock = miner._mine()
self.assertEqual(len(emptyblock.transactions), 1)
# First test with unconfirmed transactions
for i in range(1, 3):
wallet = Wallet(sender, blockchain)
wallet.send(SEND_AMOUNT, receiver.publickey())
# Scan the blockchain for the transaction that just happened.
receiver_owns = blockchain.scan_unspent_transactions(
receiver.publickey())
value_received = sum(
map(lambda x: x.get('value', 0), receiver_owns))
self.assertEqual(value_received, SEND_AMOUNT * i)
sender_owns = blockchain.scan_unspent_transactions(
sender.publickey())
value_owned_by_sender = sum(
map(lambda x: x.get('value', 0), sender_owns))
self.assertEqual(value_owned_by_sender,
SENDER_ORIG_VALUE - SEND_AMOUNT * i)
# Mine the transactions
miner = Miner(blockchain)
miner.reward_addr = miner_key.publickey()
newb = miner._mine()
# Test with confirmed transactions
receiver_owns = blockchain.scan_unspent_transactions(
receiver.publickey())
value_received = sum(map(lambda x: x.get('value', 0), receiver_owns))
self.assertEqual(value_received, SEND_AMOUNT * 2)
sender_owns = blockchain.scan_unspent_transactions(sender.publickey())
value_owned_by_sender = sum(
map(lambda x: x.get('value', 0), sender_owns))
self.assertEqual(value_owned_by_sender,
SENDER_ORIG_VALUE - SEND_AMOUNT * 2)
# Check whether miner received the award
miner_owns = blockchain.scan_unspent_transactions(
miner_key.publickey())
value_owned_by_miner = sum(map(lambda x: x.get('value', 0),
miner_owns))
self.assertEqual(value_owned_by_miner, MINING_REWARD)
self.assertEqual(len(newb.transactions), 3)
