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[Tests] add test reorg for public spend
[Unit Test] zc public spend test up-to-date with master.
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| Original file line number | Diff line number | Diff line change |
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| # !/usr/bin/env python3 | ||
| # Copyright (c) 2019 The PIVX Core developers | ||
| # Distributed under the MIT software license, see the accompanying | ||
| # file COPYING or http://www.opensource.org/licenses/mit-license.php. | ||
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| ''' | ||
| Covers the scenario of two valid PoS blocks with same height | ||
| and same coinstake input. | ||
| ''' | ||
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| from copy import deepcopy | ||
| from io import BytesIO | ||
| import time | ||
| from test_framework.messages import CTransaction, CBlock | ||
| from test_framework.util import bytes_to_hex_str, hex_str_to_bytes, assert_equal | ||
| from fake_stake.base_test import PIVX_FakeStakeTest | ||
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| class ZerocoinPublicSpendReorg(PIVX_FakeStakeTest): | ||
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| def run_test(self): | ||
| self.description = "Covers the reorg with a zc public spend in vtx" | ||
| self.init_test() | ||
| DENOM_TO_USE = 10 # zc denomination | ||
| INITAL_MINED_BLOCKS = 321 # First mined blocks (rewards collected to mint) | ||
| MORE_MINED_BLOCKS = 105 # More blocks mined before spending zerocoins | ||
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| # 1) Starting mining blocks | ||
| self.log.info("Mining %d blocks.." % INITAL_MINED_BLOCKS) | ||
| self.node.generate(INITAL_MINED_BLOCKS) | ||
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| # 2) Mint 2 zerocoins | ||
| self.node.mintzerocoin(DENOM_TO_USE) | ||
| self.node.generate(1) | ||
| self.node.mintzerocoin(DENOM_TO_USE) | ||
| self.node.generate(1) | ||
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| # 3) Mine additional blocks and collect the mints | ||
| self.log.info("Mining %d blocks.." % MORE_MINED_BLOCKS) | ||
| self.node.generate(MORE_MINED_BLOCKS) | ||
| self.log.info("Collecting mints...") | ||
| mints = self.node.listmintedzerocoins(True, False) | ||
| assert len(mints) == 2, "mints list has len %d (!= 2)" % len(mints) | ||
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| # 4) Get unspent coins and chain tip | ||
| self.unspent = self.node.listunspent() | ||
| block_count = self.node.getblockcount() | ||
| pastBlockHash = self.node.getblockhash(block_count) | ||
| self.log.info("Block count: %d - Current best: %s..." % (self.node.getblockcount(), self.node.getbestblockhash()[:5])) | ||
| pastBlock = CBlock() | ||
| pastBlock.deserialize(BytesIO(hex_str_to_bytes(self.node.getblock(pastBlockHash, False)))) | ||
| checkpoint = pastBlock.nAccumulatorCheckpoint | ||
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| # 5) get the raw zerocoin spend txes | ||
| self.log.info("Getting the raw zerocoin public spends...") | ||
| public_spend_A = self.node.createrawzerocoinpublicspend(mints[0].get("serial hash")) | ||
| tx_A = CTransaction() | ||
| tx_A.deserialize(BytesIO(hex_str_to_bytes(public_spend_A))) | ||
| tx_A.rehash() | ||
| public_spend_B = self.node.createrawzerocoinpublicspend(mints[1].get("serial hash")) | ||
| tx_B = CTransaction() | ||
| tx_B.deserialize(BytesIO(hex_str_to_bytes(public_spend_B))) | ||
| tx_B.rehash() | ||
| # Spending same coins to different recipients to get different txids | ||
| my_addy = "yAVWM5urwaTyhiuFQHP2aP47rdZsLUG5PH" | ||
| public_spend_A2 = self.node.createrawzerocoinpublicspend(mints[0].get("serial hash"), my_addy) | ||
| tx_A2 = CTransaction() | ||
| tx_A2.deserialize(BytesIO(hex_str_to_bytes(public_spend_A2))) | ||
| tx_A2.rehash() | ||
| public_spend_B2 = self.node.createrawzerocoinpublicspend(mints[1].get("serial hash"), my_addy) | ||
| tx_B2 = CTransaction() | ||
| tx_B2.deserialize(BytesIO(hex_str_to_bytes(public_spend_B2))) | ||
| tx_B2.rehash() | ||
| self.log.info("tx_A id: %s" % str(tx_A.hash)) | ||
| self.log.info("tx_B id: %s" % str(tx_B.hash)) | ||
| self.log.info("tx_A2 id: %s" % str(tx_A2.hash)) | ||
| self.log.info("tx_B2 id: %s" % str(tx_B2.hash)) | ||
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| self.test_nodes[0].handle_connect() | ||
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| # 6) create block_A --> main chain | ||
| self.log.info("") | ||
| self.log.info("*** block_A ***") | ||
| self.log.info("Creating block_A [%d] with public spend tx_A in it." % (block_count + 1)) | ||
| block_A = self.new_block(block_count, pastBlock, checkpoint, tx_A) | ||
| self.log.info("Hash of block_A: %s..." % block_A.hash[:5]) | ||
| self.log.info("sending block_A...") | ||
| var = self.node.submitblock(bytes_to_hex_str(block_A.serialize())) | ||
| if var is not None: | ||
| self.log.info("result: %s" % str(var)) | ||
| raise Exception("block_A not accepted") | ||
| time.sleep(2) | ||
| assert_equal(self.node.getblockcount(), block_count+1) | ||
| assert_equal(self.node.getbestblockhash(), block_A.hash) | ||
| self.log.info(" >> block_A connected <<") | ||
| self.log.info("Current chain: ... --> block_0 [%d] --> block_A [%d]\n" % (block_count, block_count+1)) | ||
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| # 7) create block_B --> forked chain | ||
| self.log.info("*** block_B ***") | ||
| self.log.info("Creating block_B [%d] with public spend tx_B in it." % (block_count + 1)) | ||
| block_B = self.new_block(block_count, pastBlock, checkpoint, tx_B) | ||
| self.log.info("Hash of block_B: %s..." % block_B.hash[:5]) | ||
| self.log.info("sending block_B...") | ||
| var = self.node.submitblock(bytes_to_hex_str(block_B.serialize())) | ||
| self.log.info("result of block_B submission: %s" % str(var)) | ||
| time.sleep(2) | ||
| assert_equal(self.node.getblockcount(), block_count+1) | ||
| assert_equal(self.node.getbestblockhash(), block_A.hash) | ||
| # block_B is not added. Chain remains the same | ||
| self.log.info(" >> block_B not connected <<") | ||
| self.log.info("Current chain: ... --> block_0 [%d] --> block_A [%d]\n" % (block_count, block_count+1)) | ||
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| # 8) Create new block block_C on the forked chain (block_B) | ||
| block_count += 1 | ||
| self.log.info("*** block_C ***") | ||
| self.log.info("Creating block_C [%d] on top of block_B triggering the reorg" % (block_count + 1)) | ||
| block_C = self.new_block(block_count, block_B, checkpoint) | ||
| self.log.info("Hash of block_C: %s..." % block_C.hash[:5]) | ||
| self.log.info("sending block_C...") | ||
| var = self.node.submitblock(bytes_to_hex_str(block_C.serialize())) | ||
| if var is not None: | ||
| self.log.info("result: %s" % str(var)) | ||
| raise Exception("block_C not accepted") | ||
| time.sleep(2) | ||
| assert_equal(self.node.getblockcount(), block_count+1) | ||
| assert_equal(self.node.getbestblockhash(), block_C.hash) | ||
| self.log.info(" >> block_A disconnected / block_B and block_C connected <<") | ||
| self.log.info("Current chain: ... --> block_0 [%d] --> block_B [%d] --> block_C [%d]\n" % ( | ||
| block_count - 1, block_count, block_count+1 | ||
| )) | ||
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| # 7) Now create block_D which tries to spend same coin of tx_B again on the (new) main chain | ||
| # (this block will be rejected) | ||
| block_count += 1 | ||
| self.log.info("*** block_D ***") | ||
| self.log.info("Creating block_D [%d] trying to double spend the coin of tx_B" % (block_count + 1)) | ||
| block_D = self.new_block(block_count, block_C, checkpoint, tx_B2) | ||
| self.log.info("Hash of block_D: %s..." % block_D.hash[:5]) | ||
| self.log.info("sending block_D...") | ||
| var = self.node.submitblock(bytes_to_hex_str(block_D.serialize())) | ||
| self.log.info("result of block_D submission: %s" % str(var)) | ||
| time.sleep(2) | ||
| assert_equal(self.node.getblockcount(), block_count) | ||
| assert_equal(self.node.getbestblockhash(), block_C.hash) | ||
| # block_D is not added. Chain remains the same | ||
| self.log.info(" >> block_D rejected <<") | ||
| self.log.info("Current chain: ... --> block_0 [%d] --> block_B [%d] --> block_C [%d]\n" % ( | ||
| block_count - 2, block_count - 1, block_count | ||
| )) | ||
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| # 8) Now create block_E which spends tx_A again on main chain | ||
| # (this block will be accepted and connected since tx_A was spent on block_A now disconnected) | ||
| self.log.info("*** block_E ***") | ||
| self.log.info("Creating block_E [%d] trying spend tx_A on main chain" % (block_count + 1)) | ||
| block_E = self.new_block(block_count, block_C, checkpoint, tx_A) | ||
| self.log.info("Hash of block_E: %s..." % block_E.hash[:5]) | ||
| self.log.info("sending block_E...") | ||
| var = self.node.submitblock(bytes_to_hex_str(block_E.serialize())) | ||
| if var is not None: | ||
| self.log.info("result: %s" % str(var)) | ||
| raise Exception("block_E not accepted") | ||
| time.sleep(2) | ||
| assert_equal(self.node.getblockcount(), block_count+1) | ||
| assert_equal(self.node.getbestblockhash(), block_E.hash) | ||
| self.log.info(" >> block_E connected <<") | ||
| self.log.info("Current chain: ... --> block_0 [%d] --> block_B [%d] --> block_C [%d] --> block_E [%d]\n" % ( | ||
| block_count - 2, block_count - 1, block_count, block_count+1 | ||
| )) | ||
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| # 9) Now create block_F which tries to double spend the coin in tx_A | ||
| # # (this block will be rejected) | ||
| block_count += 1 | ||
| self.log.info("*** block_F ***") | ||
| self.log.info("Creating block_F [%d] trying to double spend the coin in tx_A" % (block_count + 1)) | ||
| block_F = self.new_block(block_count, block_E, checkpoint, tx_A2) | ||
| self.log.info("Hash of block_F: %s..." % block_F.hash[:5]) | ||
| self.log.info("sending block_F...") | ||
| var = self.node.submitblock(bytes_to_hex_str(block_F.serialize())) | ||
| self.log.info("result of block_F submission: %s" % str(var)) | ||
| time.sleep(2) | ||
| assert_equal(self.node.getblockcount(), block_count) | ||
| assert_equal(self.node.getbestblockhash(), block_E.hash) | ||
| self.log.info(" >> block_F rejected <<") | ||
| self.log.info("Current chain: ... --> block_0 [%d] --> block_B [%d] --> block_C [%d] --> block_E [%d]\n" % ( | ||
| block_count - 3, block_count - 2, block_count - 1, block_count | ||
| )) | ||
| self.log.info("All good.") | ||
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| def new_block(self, block_count, prev_block, checkpoint, zcspend = None): | ||
| if prev_block.hash is None: | ||
| prev_block.rehash() | ||
| staking_utxo_list = [self.unspent.pop()] | ||
| pastBlockHash = prev_block.hash | ||
| stakingPrevOuts = self.get_prevouts(staking_utxo_list, block_count) | ||
| block = self.create_spam_block(pastBlockHash, stakingPrevOuts, block_count + 1) | ||
| if zcspend is not None: | ||
| block.vtx.append(zcspend) | ||
| block.hashMerkleRoot = block.calc_merkle_root() | ||
| block.nAccumulatorCheckpoint = checkpoint | ||
| block.rehash() | ||
| block.sign_block(self.block_sig_key) | ||
| return block | ||
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| if __name__ == '__main__': | ||
| ZerocoinPublicSpendReorg().main() |