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bcecdcd8e9
fad68f7[qa] Reduce node count for some tests (MarcoFalke)fac9349[qa] Remove hardcoded "4 nodes" from test_framework (MarcoFalke)
402 lines
16 KiB
Python
Executable File
402 lines
16 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2015-2016 The Bitcoin Core 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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from test_framework.test_framework import ComparisonTestFramework
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from test_framework.util import *
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from test_framework.comptool import TestManager, TestInstance, RejectResult
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from test_framework.blocktools import *
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import time
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from test_framework.key import CECKey
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from test_framework.script import CScript, SignatureHash, SIGHASH_ALL, OP_TRUE, OP_FALSE
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class PreviousSpendableOutput(object):
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def __init__(self, tx = CTransaction(), n = -1):
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self.tx = tx
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self.n = n # the output we're spending
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'''
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This reimplements tests from the bitcoinj/FullBlockTestGenerator used
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by the pull-tester.
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We use the testing framework in which we expect a particular answer from
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each test.
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'''
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class FullBlockTest(ComparisonTestFramework):
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''' Can either run this test as 1 node with expected answers, or two and compare them.
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Change the "outcome" variable from each TestInstance object to only do the comparison. '''
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def __init__(self):
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super().__init__()
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self.num_nodes = 1
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self.block_heights = {}
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self.coinbase_key = CECKey()
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self.coinbase_key.set_secretbytes(b"horsebattery")
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self.coinbase_pubkey = self.coinbase_key.get_pubkey()
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self.block_time = int(time.time())+1
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self.tip = None
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self.blocks = {}
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def run_test(self):
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test = TestManager(self, self.options.tmpdir)
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test.add_all_connections(self.nodes)
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NetworkThread().start() # Start up network handling in another thread
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sync_masternodes(self.nodes)
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test.run()
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def add_transactions_to_block(self, block, tx_list):
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[ tx.rehash() for tx in tx_list ]
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block.vtx.extend(tx_list)
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block.hashMerkleRoot = block.calc_merkle_root()
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block.rehash()
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return block
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# Create a block on top of self.tip, and advance self.tip to point to the new block
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# if spend is specified, then 1 satoshi will be spent from that to an anyone-can-spend output,
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# and rest will go to fees.
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def next_block(self, number, spend=None, additional_coinbase_value=0, script=None):
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if self.tip == None:
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base_block_hash = self.genesis_hash
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else:
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base_block_hash = self.tip.sha256
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# First create the coinbase
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height = self.block_heights[base_block_hash] + 1
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coinbase = create_coinbase(height, self.coinbase_pubkey)
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coinbase.vout[0].nValue += additional_coinbase_value
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if (spend != None):
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coinbase.vout[0].nValue += spend.tx.vout[spend.n].nValue - 1 # all but one satoshi to fees
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coinbase.rehash()
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block = create_block(base_block_hash, coinbase, self.block_time)
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if (spend != None):
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tx = CTransaction()
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tx.vin.append(CTxIn(COutPoint(spend.tx.sha256, spend.n), b"", 0xffffffff)) # no signature yet
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# This copies the java comparison tool testing behavior: the first
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# txout has a garbage scriptPubKey, "to make sure we're not
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# pre-verifying too much" (?)
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tx.vout.append(CTxOut(0, CScript([random.randint(0,255), height & 255])))
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if script == None:
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tx.vout.append(CTxOut(1, CScript([OP_TRUE])))
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else:
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tx.vout.append(CTxOut(1, script))
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# Now sign it if necessary
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scriptSig = b""
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scriptPubKey = bytearray(spend.tx.vout[spend.n].scriptPubKey)
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if (scriptPubKey[0] == OP_TRUE): # looks like an anyone-can-spend
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scriptSig = CScript([OP_TRUE])
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else:
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# We have to actually sign it
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(sighash, err) = SignatureHash(spend.tx.vout[spend.n].scriptPubKey, tx, 0, SIGHASH_ALL)
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scriptSig = CScript([self.coinbase_key.sign(sighash) + bytes(bytearray([SIGHASH_ALL]))])
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tx.vin[0].scriptSig = scriptSig
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# Now add the transaction to the block
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block = self.add_transactions_to_block(block, [tx])
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block.solve()
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self.tip = block
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self.block_heights[block.sha256] = height
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self.block_time += 1
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assert number not in self.blocks
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self.blocks[number] = block
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return block
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def get_tests(self):
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self.genesis_hash = int(self.nodes[0].getbestblockhash(), 16)
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self.block_heights[self.genesis_hash] = 0
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spendable_outputs = []
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# save the current tip so it can be spent by a later block
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def save_spendable_output():
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spendable_outputs.append(self.tip)
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# get an output that we previous marked as spendable
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def get_spendable_output():
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return PreviousSpendableOutput(spendable_outputs.pop(0).vtx[0], 0)
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# returns a test case that asserts that the current tip was accepted
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def accepted():
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return TestInstance([[self.tip, True]])
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# returns a test case that asserts that the current tip was rejected
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def rejected(reject = None):
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if reject is None:
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return TestInstance([[self.tip, False]])
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else:
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return TestInstance([[self.tip, reject]])
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# move the tip back to a previous block
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def tip(number):
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self.tip = self.blocks[number]
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# add transactions to a block produced by next_block
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def update_block(block_number, new_transactions):
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block = self.blocks[block_number]
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old_hash = block.sha256
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self.add_transactions_to_block(block, new_transactions)
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block.solve()
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# Update the internal state just like in next_block
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self.tip = block
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self.block_heights[block.sha256] = self.block_heights[old_hash]
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del self.block_heights[old_hash]
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self.blocks[block_number] = block
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return block
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# creates a new block and advances the tip to that block
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block = self.next_block
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# Create a new block
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block(0)
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save_spendable_output()
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yield accepted()
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# Now we need that block to mature so we can spend the coinbase.
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test = TestInstance(sync_every_block=False)
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for i in range(99):
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block(1000 + i)
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test.blocks_and_transactions.append([self.tip, True])
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save_spendable_output()
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yield test
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# Start by building a couple of blocks on top (which output is spent is
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# in parentheses):
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# genesis -> b1 (0) -> b2 (1)
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out0 = get_spendable_output()
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block(1, spend=out0)
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save_spendable_output()
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yield accepted()
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out1 = get_spendable_output()
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b2 = block(2, spend=out1)
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yield accepted()
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# so fork like this:
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#
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# genesis -> b1 (0) -> b2 (1)
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# \-> b3 (1)
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#
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# Nothing should happen at this point. We saw b2 first so it takes priority.
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tip(1)
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b3 = block(3, spend=out1)
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txout_b3 = PreviousSpendableOutput(b3.vtx[1], 1)
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yield rejected()
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# Now we add another block to make the alternative chain longer.
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#
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# genesis -> b1 (0) -> b2 (1)
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# \-> b3 (1) -> b4 (2)
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out2 = get_spendable_output()
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block(4, spend=out2)
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yield accepted()
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# ... and back to the first chain.
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b3 (1) -> b4 (2)
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tip(2)
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block(5, spend=out2)
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save_spendable_output()
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yield rejected()
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out3 = get_spendable_output()
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block(6, spend=out3)
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yield accepted()
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# Try to create a fork that double-spends
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b7 (2) -> b8 (4)
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# \-> b3 (1) -> b4 (2)
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tip(5)
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block(7, spend=out2)
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yield rejected()
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out4 = get_spendable_output()
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block(8, spend=out4)
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yield rejected()
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# Try to create a block that has too much fee
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b9 (4)
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# \-> b3 (1) -> b4 (2)
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tip(6)
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block(9, spend=out4, additional_coinbase_value=1)
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yield rejected(RejectResult(16, b'bad-cb-amount'))
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# Create a fork that ends in a block with too much fee (the one that causes the reorg)
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b10 (3) -> b11 (4)
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# \-> b3 (1) -> b4 (2)
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tip(5)
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block(10, spend=out3)
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yield rejected()
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block(11, spend=out4, additional_coinbase_value=1)
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yield rejected(RejectResult(16, b'bad-cb-amount'))
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# Try again, but with a valid fork first
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b14 (5)
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# (b12 added last)
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# \-> b3 (1) -> b4 (2)
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tip(5)
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b12 = block(12, spend=out3)
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save_spendable_output()
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#yield TestInstance([[b12, False]])
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b13 = block(13, spend=out4)
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# Deliver the block header for b12, and the block b13.
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# b13 should be accepted but the tip won't advance until b12 is delivered.
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yield TestInstance([[CBlockHeader(b12), None], [b13, False]])
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save_spendable_output()
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out5 = get_spendable_output()
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# b14 is invalid, but the node won't know that until it tries to connect
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# Tip still can't advance because b12 is missing
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block(14, spend=out5, additional_coinbase_value=1)
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yield rejected()
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yield TestInstance([[b12, True, b13.sha256]]) # New tip should be b13.
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# Add a block with MAX_BLOCK_SIGOPS and one with one more sigop
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5) -> b16 (6)
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# \-> b3 (1) -> b4 (2)
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# Test that a block with a lot of checksigs is okay
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lots_of_checksigs = CScript([OP_CHECKSIG] * (1000000 // 50 - 1))
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tip(13)
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block(15, spend=out5, script=lots_of_checksigs)
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yield accepted()
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# Test that a block with too many checksigs is rejected
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out6 = get_spendable_output()
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too_many_checksigs = CScript([OP_CHECKSIG] * (1000000 // 50))
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block(16, spend=out6, script=too_many_checksigs)
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yield rejected(RejectResult(16, b'bad-blk-sigops'))
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# Attempt to spend a transaction created on a different fork
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5) -> b17 (b3.vtx[1])
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# \-> b3 (1) -> b4 (2)
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tip(15)
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block(17, spend=txout_b3)
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yield rejected(RejectResult(16, b'bad-txns-inputs-missingorspent'))
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# Attempt to spend a transaction created on a different fork (on a fork this time)
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5)
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# \-> b18 (b3.vtx[1]) -> b19 (6)
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# \-> b3 (1) -> b4 (2)
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tip(13)
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block(18, spend=txout_b3)
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yield rejected()
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block(19, spend=out6)
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yield rejected()
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# Attempt to spend a coinbase at depth too low
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5) -> b20 (7)
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# \-> b3 (1) -> b4 (2)
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tip(15)
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out7 = get_spendable_output()
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block(20, spend=out7)
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yield rejected(RejectResult(16, b'bad-txns-premature-spend-of-coinbase'))
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# Attempt to spend a coinbase at depth too low (on a fork this time)
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5)
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# \-> b21 (6) -> b22 (5)
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# \-> b3 (1) -> b4 (2)
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tip(13)
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block(21, spend=out6)
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yield rejected()
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block(22, spend=out5)
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yield rejected()
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# Create a block on either side of MAX_BLOCK_SIZE and make sure its accepted/rejected
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5) -> b23 (6)
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# \-> b24 (6) -> b25 (7)
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# \-> b3 (1) -> b4 (2)
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tip(15)
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b23 = block(23, spend=out6)
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old_hash = b23.sha256
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tx = CTransaction()
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script_length = MAX_BLOCK_SIZE - len(b23.serialize()) - 69
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script_output = CScript([b'\x00' * script_length])
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tx.vout.append(CTxOut(0, script_output))
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tx.vin.append(CTxIn(COutPoint(b23.vtx[1].sha256, 1)))
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b23 = update_block(23, [tx])
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# Make sure the math above worked out to produce a max-sized block
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assert_equal(len(b23.serialize()), MAX_BLOCK_SIZE)
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yield accepted()
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# Make the next block one byte bigger and check that it fails
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tip(15)
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b24 = block(24, spend=out6)
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script_length = MAX_BLOCK_SIZE - len(b24.serialize()) - 69
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script_output = CScript([b'\x00' * (script_length+1)])
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tx.vout = [CTxOut(0, script_output)]
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b24 = update_block(24, [tx])
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assert_equal(len(b24.serialize()), MAX_BLOCK_SIZE+1)
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yield rejected(RejectResult(16, b'bad-blk-length'))
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b25 = block(25, spend=out7)
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yield rejected()
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# Create blocks with a coinbase input script size out of range
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# genesis -> b1 (0) -> b2 (1) -> b5 (2) -> b6 (3)
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# \-> b12 (3) -> b13 (4) -> b15 (5) -> b23 (6) -> b30 (7)
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# \-> ... (6) -> ... (7)
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# \-> b3 (1) -> b4 (2)
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tip(15)
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b26 = block(26, spend=out6)
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b26.vtx[0].vin[0].scriptSig = b'\x00'
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b26.vtx[0].rehash()
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# update_block causes the merkle root to get updated, even with no new
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# transactions, and updates the required state.
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b26 = update_block(26, [])
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yield rejected(RejectResult(16, b'bad-cb-length'))
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# Extend the b26 chain to make sure bitcoind isn't accepting b26
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b27 = block(27, spend=out7)
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yield rejected()
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# Now try a too-large-coinbase script
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tip(15)
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b28 = block(28, spend=out6)
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b28.vtx[0].vin[0].scriptSig = b'\x00' * 101
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b28.vtx[0].rehash()
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b28 = update_block(28, [])
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yield rejected(RejectResult(16, b'bad-cb-length'))
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# Extend the b28 chain to make sure bitcoind isn't accepted b28
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b29 = block(29, spend=out7)
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# TODO: Should get a reject message back with "bad-prevblk", except
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# there's a bug that prevents this from being detected. Just note
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# failure for now, and add the reject result later.
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yield rejected()
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# b30 has a max-sized coinbase scriptSig.
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tip(23)
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b30 = block(30)
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b30.vtx[0].vin[0].scriptSig = b'\x00' * 100
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b30.vtx[0].rehash()
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b30 = update_block(30, [])
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yield accepted()
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if __name__ == '__main__':
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FullBlockTest().main()
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