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Merge bitcoin/bitcoin#22378: test: remove confusing MAX_BLOCK_BASE_SIZE

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607076d01bf23c69ac21950c17b01fb4e1130774 test: remove confusing `MAX_BLOCK_BASE_SIZE` (Sebastian Falbesoner)
4af97c74edcda56cd15523bf3a335adea2bad14a test: introduce `get_weight()` helper for CBlock (Sebastian Falbesoner)
a084ebe1330bcec15715e08b0f65319142927ad1 test: introduce `get_weight()` helper for CTransaction (Sebastian Falbesoner)

Pull request description:

  This is a very late follow-up PR to #10618, which removed the constant `MAX_BLOCK_BASE_SIZE` from the core implementation about four years ago (see also #10608 in why it was considered confusing and superfluous).
  Since there is also no point in still keeping it in the functional test framework, the PR switches to weight-based accounting on the relevant test code parts and use `MAX_BLOCK_WEIGHT` instead for the block limit checks. To prepare that, the first two commits introduce `get_weight()` helpers for the classes CTransaction and CBlock, respectively.

ACKs for top commit:
  MarcoFalke:
    review ACK 607076d01bf23c69ac21950c17b01fb4e1130774 🚴

Tree-SHA512: d59aa0b6b3dfd0a849b8063e66de275d252f705f99e25cd3bf6daec028b47d946777ee5b42a060f5283cb18e917ac073119c2c0e11bbc21211f69ef0a6ed335a
This commit is contained in:
MarcoFalke 2021-08-02 15:51:42 +02:00 committed by Konstantin Akimov
parent 42a0cf0709
commit 5a803ae765
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GPG Key ID: 2176C4A5D01EA524
3 changed files with 20 additions and 15 deletions
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26
test/functional/feature_block.py
View File

@ -329,24 +329,24 @@ class FullBlockTest(BitcoinTestFramework):
self.move_tip(15)
b23 = self.next_block(23, spend=out[6])
tx = CTransaction()
script_length = MAX_BLOCK_SIZE - len(b23.serialize()) - 69
script_length = MAX_BLOCK_SIZE - b23.get_weight() - 69
script_output = CScript([b'\x00' * script_length])
tx.vout.append(CTxOut(0, script_output))
tx.vin.append(CTxIn(COutPoint(b23.vtx[1].sha256, 0)))
b23 = self.update_block(23, [tx])
# Make sure the math above worked out to produce a max-sized block
assert_equal(len(b23.serialize()), MAX_BLOCK_SIZE)
assert_equal(b23.get_weight(), MAX_BLOCK_SIZE)
self.send_blocks([b23], True)
self.save_spendable_output()
self.log.info("Reject a block of size MAX_BLOCK_SIZE + 1")
self.move_tip(15)
b24 = self.next_block(24, spend=out[6])
script_length = MAX_BLOCK_SIZE - len(b24.serialize()) - 69
script_length = MAX_BLOCK_SIZE - b24.get_weight() - 69
script_output = CScript([b'\x00' * (script_length + 1)])
tx.vout = [CTxOut(0, script_output)]
b24 = self.update_block(24, [tx])
assert_equal(len(b24.serialize()), MAX_BLOCK_SIZE + 1)
assert_equal(b24.get_weight(), MAX_BLOCK_SIZE + 1)
self.send_blocks([b24], success=False, reject_reason='bad-blk-length', reconnect=True)
b25 = self.next_block(25, spend=out[7])
@ -500,13 +500,13 @@ class FullBlockTest(BitcoinTestFramework):
# Until block is full, add tx's with 1 satoshi to p2sh_script, the rest to OP_TRUE
tx_new = None
tx_last = tx
total_size = len(b39.serialize())
while(total_size < MAX_BLOCK_SIZE):
total_weight = b39.get_weight()
while total_weight < MAX_BLOCK_SIZE:
tx_new = self.create_tx(tx_last, 1, 1, p2sh_script)
tx_new.vout.append(CTxOut(tx_last.vout[1].nValue - 1, CScript([OP_TRUE])))
tx_new.rehash()
total_size += len(tx_new.serialize())
if total_size >= MAX_BLOCK_SIZE:
total_weight += tx_new.get_weight()
if total_weight >= MAX_BLOCK_SIZE:
break
b39.vtx.append(tx_new) # add tx to block
tx_last = tx_new
@ -517,7 +517,7 @@ class FullBlockTest(BitcoinTestFramework):
# Make sure we didn't accidentally make too big a block. Note that the
# size of the block has non-determinism due to the ECDSA signature in
# the first transaction.
while (len(b39.serialize()) >= MAX_BLOCK_SIZE):
while b39.get_weight() >= MAX_BLOCK_SIZE:
del b39.vtx[-1]
b39 = self.update_block(39, [])
@ -938,7 +938,7 @@ class FullBlockTest(BitcoinTestFramework):
tx.vout.append(CTxOut(0, script_output))
tx.vin.append(CTxIn(COutPoint(b64a.vtx[1].sha256, 0)))
b64a = self.update_block("64a", [tx])
assert_equal(len(b64a.serialize()), MAX_BLOCK_SIZE + 8)
assert_equal(b64a.get_weight(), MAX_BLOCK_SIZE + 8)
self.send_blocks([b64a], success=False, reject_reason='non-canonical ReadCompactSize()')
# dashd doesn't disconnect us for sending a bloated block, but if we subsequently
@ -952,7 +952,7 @@ class FullBlockTest(BitcoinTestFramework):
b64 = CBlock(b64a)
b64.vtx = copy.deepcopy(b64a.vtx)
assert_equal(b64.hash, b64a.hash)
assert_equal(len(b64.serialize()), MAX_BLOCK_SIZE)
assert_equal(b64.get_weight(), MAX_BLOCK_SIZE)
self.blocks[64] = b64
b64 = self.update_block(64, [])
self.send_blocks([b64], True)
@ -1290,12 +1290,12 @@ class FullBlockTest(BitcoinTestFramework):
for i in range(89, LARGE_REORG_SIZE + 89):
b = self.next_block(i, spend)
tx = CTransaction()
script_length = MAX_BLOCK_SIZE - len(b.serialize()) - 69
script_length = MAX_BLOCK_SIZE - b.get_weight() - 69
script_output = CScript([b'\x00' * script_length])
tx.vout.append(CTxOut(0, script_output))
tx.vin.append(CTxIn(COutPoint(b.vtx[1].sha256, 0)))
b = self.update_block(i, [tx])
assert_equal(len(b.serialize()), MAX_BLOCK_SIZE)
assert_equal(b.get_weight(), MAX_BLOCK_SIZE)
blocks.append(b)
self.save_spendable_output()
spend = self.get_spendable_output()

4
test/functional/mining_prioritisetransaction.py
View File

@ -55,8 +55,8 @@ class PrioritiseTransactionTest(BitcoinTestFramework):
txids[i] = create_lots_of_big_transactions(self.nodes[0], self.txouts, utxos[start_range:end_range], end_range - start_range, (i+1)*base_fee)
# Make sure that the size of each group of transactions exceeds
# MAX_BLOCK_SIZE -- otherwise the test needs to be revised to create
# more transactions.
# MAX_BLOCK_SIZE -- otherwise the test needs to be revised to
# create more transactions.
mempool = self.nodes[0].getrawmempool(True)
sizes = [0, 0, 0]
for i in range(3):

5
test/functional/test_framework/messages.py
View File

@ -546,6 +546,7 @@ class CTransaction:
def get_vsize(self):
return len(self.serialize())
# it's just a helper that return vsize to reduce conflicts during backporting
def get_weight(self):
return self.get_vsize()
@ -681,6 +682,10 @@ class CBlock(CBlockHeader):
self.nNonce += 1
self.rehash()
# it's just a helper that return vsize to reduce conflicts during backporting
def get_weight(self):
return len(self.serialize())
def __repr__(self):
return "CBlock(nVersion=%i hashPrevBlock=%064x hashMerkleRoot=%064x nTime=%s nBits=%08x nNonce=%08x vtx=%s)" \
% (self.nVersion, self.hashPrevBlock, self.hashMerkleRoot,