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[qa] Test getblocktemplate default_witness_commitment

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This commit is contained in:
Suhas Daftuar 2016-11-19 06:55:25 -05:00 committed by Pieter Wuille
parent ad04d1cb35
commit 95f4a03777
1 changed files with 46 additions and 22 deletions
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68
qa/rpc-tests/p2p-segwit.py
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@ -195,11 +195,6 @@ class SegWitTest(BitcoinTestFramework):
self.setup_clean_chain = True
self.num_nodes = 3
def add_options(self, parser):
parser.add_option("--oldbinary", dest="oldbinary",
default=None,
help="pre-segwit bitcoind binary for upgrade testing")
def setup_network(self):
self.nodes = []
self.nodes.append(start_node(0, self.options.tmpdir, ["-debug", "-logtimemicros=1", "-whitelist=127.0.0.1"]))
@ -207,12 +202,9 @@ class SegWitTest(BitcoinTestFramework):
self.nodes.append(start_node(1, self.options.tmpdir, ["-debug", "-logtimemicros=1", "-whitelist=127.0.0.1", "-acceptnonstdtxn=0"]))
connect_nodes(self.nodes[0], 1)
# If an old bitcoind is given, do the upgrade-after-activation test.
self.test_upgrade = False
if (self.options.oldbinary != None):
self.nodes.append(start_node(2, self.options.tmpdir, ["-debug", "-whitelist=127.0.0.1"], binary=self.options.oldbinary))
connect_nodes(self.nodes[0], 2)
self.test_upgrade = True
# Disable segwit's bip9 parameter to simulate upgrading after activation.
self.nodes.append(start_node(2, self.options.tmpdir, ["-debug", "-whitelist=127.0.0.1", "-bip9params=segwit:0:0"]))
connect_nodes(self.nodes[0], 2)
''' Helpers '''
# Build a block on top of node0's tip.
@ -1177,7 +1169,7 @@ class SegWitTest(BitcoinTestFramework):
if segwit_activated:
# tx and tx2 were both accepted. Don't bother trying to reclaim the
# P2PKH output; just send tx's first output back to an anyone-can-spend.
sync_mempools(self.nodes)
sync_mempools([self.nodes[0], self.nodes[1]])
tx3.vin = [CTxIn(COutPoint(tx.sha256, 0), b"")]
tx3.vout = [CTxOut(tx.vout[0].nValue-1000, CScript([OP_TRUE]))]
tx3.wit.vtxinwit.append(CTxInWitness())
@ -1706,19 +1698,53 @@ class SegWitTest(BitcoinTestFramework):
def test_getblocktemplate_before_lockin(self):
print("\tTesting getblocktemplate setting of segwit versionbit (before lockin)")
block_version = (self.nodes[0].getblocktemplate())['version']
assert_equal(block_version & (1 << VB_WITNESS_BIT), 0)
# Node0 is segwit aware, node2 is not.
for node in [self.nodes[0], self.nodes[2]]:
gbt_results = node.getblocktemplate()
block_version = gbt_results['version']
# If we're not indicating segwit support, we should not be signalling
# for segwit activation, nor should we get a witness commitment.
assert_equal(block_version & (1 << VB_WITNESS_BIT), 0)
assert('default_witness_commitment' not in gbt_results)
# Workaround:
# Can either change the tip, or change the mempool and wait 5 seconds
# to trigger a recomputation of getblocktemplate.
self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1)
txid = int(self.nodes[0].sendtoaddress(self.nodes[0].getnewaddress(), 1), 16)
# Using mocktime lets us avoid sleep()
sync_mempools(self.nodes)
self.nodes[0].setmocktime(int(time.time())+10)
self.nodes[2].setmocktime(int(time.time())+10)
block_version = self.nodes[0].getblocktemplate({"rules" : ["segwit"]})['version']
assert(block_version & (1 << VB_WITNESS_BIT) != 0)
self.nodes[0].setmocktime(0) # undo mocktime
for node in [self.nodes[0], self.nodes[2]]:
gbt_results = node.getblocktemplate({"rules" : ["segwit"]})
block_version = gbt_results['version']
if node == self.nodes[2]:
# If this is a non-segwit node, we should still not get a witness
# commitment, nor a version bit signalling segwit.
assert_equal(block_version & (1 << VB_WITNESS_BIT), 0)
assert('default_witness_commitment' not in gbt_results)
else:
# For segwit-aware nodes, check the version bit and the witness
# commitment are correct.
assert(block_version & (1 << VB_WITNESS_BIT) != 0)
assert('default_witness_commitment' in gbt_results)
witness_commitment = gbt_results['default_witness_commitment']
# TODO: this duplicates some code from blocktools.py, would be nice
# to refactor.
# Check that default_witness_commitment is present.
block = CBlock()
witness_root = block.get_merkle_root([ser_uint256(0), ser_uint256(txid)])
check_commitment = uint256_from_str(hash256(ser_uint256(witness_root)+ser_uint256(0)))
from test_framework.blocktools import WITNESS_COMMITMENT_HEADER
output_data = WITNESS_COMMITMENT_HEADER + ser_uint256(check_commitment)
script = CScript([OP_RETURN, output_data])
assert_equal(witness_commitment, bytes_to_hex_str(script))
# undo mocktime
self.nodes[0].setmocktime(0)
self.nodes[2].setmocktime(0)
# Uncompressed pubkeys are no longer supported in default relay policy,
# but (for now) are still valid in blocks.
@ -1958,6 +1984,7 @@ class SegWitTest(BitcoinTestFramework):
# Advance to segwit being 'started'
self.advance_to_segwit_started()
sync_blocks(self.nodes)
self.test_getblocktemplate_before_lockin()
sync_blocks(self.nodes)
@ -2000,10 +2027,7 @@ class SegWitTest(BitcoinTestFramework):
self.test_signature_version_1()
self.test_non_standard_witness()
sync_blocks(self.nodes)
if self.test_upgrade:
self.test_upgrade_after_activation(self.nodes[2], 2)
else:
print("\tSkipping upgrade-after-activation test (use --oldbinary to enable)")
self.test_upgrade_after_activation(self.nodes[2], 2)
self.test_witness_sigops()