107 lines
3.9 KiB
Python
107 lines
3.9 KiB
Python
#!/usr/bin/env python3
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# Copyright (c) 2019 The PIVX developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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'''
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Covers the scenario of a zPoS block where the coinstake input is a zerocoin spend
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of an already spent coin.
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'''
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from time import sleep
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from test_framework.authproxy import JSONRPCException
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from fake_stake.base_test import Agrarian_FakeStakeTest
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class zPoSFakeStake(Agrarian_FakeStakeTest):
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def run_test(self):
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self.description = "Covers the scenario of a zPoS block where the coinstake input is a zerocoin spend of an already spent coin."
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self.init_test()
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DENOM_TO_USE = 5000 # zc denomination
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INITAL_MINED_BLOCKS = 321 # First mined blocks (rewards collected to mint)
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MORE_MINED_BLOCKS = 301 # More blocks mined before spending zerocoins
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self.NUM_BLOCKS = 2 # Number of spammed blocks
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# 1) Starting mining blocks
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self.log.info("Mining %d blocks to get to zPOS activation...." % INITAL_MINED_BLOCKS)
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self.node.generate(INITAL_MINED_BLOCKS)
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sleep(2)
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# 2) Collect the possible prevouts and mint zerocoins with those
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self.log.info("Collecting all unspent coins which we generated from mining...")
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balance = self.node.getbalance("*", 100)
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self.log.info("Minting zerocoins...")
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initial_mints = 0
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while balance > DENOM_TO_USE:
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try:
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self.node.mintzerocoin(DENOM_TO_USE)
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except JSONRPCException:
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break
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sleep(1)
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initial_mints += 1
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self.node.generate(1)
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sleep(1)
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if initial_mints % 5 == 0:
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self.log.info("Minted %d coins" % initial_mints)
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if initial_mints >= 70:
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break
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balance = self.node.getbalance("*", 100)
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self.log.info("Minted %d coins in the %d-denom, remaining balance %d", initial_mints, DENOM_TO_USE, balance)
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sleep(2)
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# 3) mine more blocks
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self.log.info("Mining %d more blocks ... and getting spendable zerocoins" % MORE_MINED_BLOCKS)
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self.node.generate(MORE_MINED_BLOCKS)
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sleep(2)
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mints = self.node.listmintedzerocoins(True, True)
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mints_hashes = [x["serial hash"] for x in mints]
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# This mints are not ready spendable, only few of them.
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self.log.info("Got %d confirmed mints" % len(mints_hashes))
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# 4) spend mints
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self.log.info("Spending mints in block %d..." % self.node.getblockcount())
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spends = 0
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spent_mints = []
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for mint in mints_hashes:
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# create a single element list to pass to RPC spendzerocoinmints
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mint_arg = []
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mint_arg.append(mint)
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try:
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self.node.spendzerocoinmints(mint_arg)
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sleep(1)
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spends += 1
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spent_mints.append(mint)
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except JSONRPCException as e:
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self.log.warning(str(e))
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continue
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sleep(1)
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self.log.info("Successfully spent %d mints" % spends)
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# 5) Start mining again so that spends get confirmed in a block.
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self.log.info("Mining 5 more blocks...")
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self.node.generate(5)
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sleep(2)
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# 6) Collect some prevouts for random txes
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self.log.info("Collecting inputs for txes...")
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spending_utxo_list = self.node.listunspent()
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sleep(1)
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# 7) Create "Fake Stake" blocks and send them
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self.log.info("Creating Fake stake zPoS blocks...")
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err_msgs = self.test_spam("Main", mints, spending_utxo_list=spending_utxo_list, fZPoS=True)
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if not len(err_msgs) == 0:
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self.log.error("result: " + " | ".join(err_msgs))
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raise AssertionError("TEST FAILED")
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self.log.info("%s PASSED" % self.__class__.__name__)
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if __name__ == '__main__':
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zPoSFakeStake().main()
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