def test_proto():
reward_key = Key.generate_private_key()
proto1 = Protocol([], GENESIS_BLOCK, 1337)
proto2 = Protocol([("127.0.0.1", 1337)], GENESIS_BLOCK, 1338)
miner1 = Miner(proto1, reward_key)
miner2 = Miner(proto2, reward_key)
miner2.start_mining()
miner1.start_mining()
try:
sleep(5)
target_key = Key.generate_private_key()
chain = miner1.chainbuilder.primary_block_chain
reward_trans = chain.blocks[20].transactions[0]
trans_in = TransactionInput(reward_trans.get_hash(), 0)
trans_targ = TransactionTarget(target_key,
reward_trans.targets[0].amount)
trans = Transaction([trans_in], [trans_targ], datetime.utcnow())
trans.sign([reward_key])
assert trans.verify(chain, set()), "transaction should be valid"
proto1.received('transaction', trans.to_json_compatible(), None)
print("============Transaction=============")
sleep(10)
chain_len1 = len(miner1.chainbuilder.primary_block_chain.blocks)
chain_len2 = len(miner2.chainbuilder.primary_block_chain.blocks)
print("Length of chain of miner 1: {}".format(chain_len1))
print("Length of chain of miner 2: {}".format(chain_len2))
finally:
miner1.shutdown()
miner2.shutdown()
assert max(chain_len1, chain_len2) * 90 // 100 < min(
chain_len1, chain_len2), "chain lengths are VERY different"
chain1 = miner1.chainbuilder.primary_block_chain
hashes1 = [b.hash for b in chain1.blocks[:chain_len1 * 90 // 100]]
hashes2 = [
b.hash
for b in miner2.chainbuilder.primary_block_chain.blocks[:chain_len1 *
90 // 100]
]
assert hashes1 == hashes2, "first 90% of chains should be identical"
assert not trans.verify(
miner1.chainbuilder.primary_block_chain,
set()), "inserted transaction should be spent and therefore invalid"
assert TransactionInput(
trans.get_hash(),
0) in chain1.unspent_coins, "someone spent our coins?"
