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Test transaction selection when gbt called without segwit support

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Github-Pull: #9955
Rebased-From: c85ffe6d8d
This commit is contained in:
Suhas Daftuar 2017-03-09 13:49:50 -05:00
parent 569596cc51
commit 2cd2cd51f7
1 changed files with 49 additions and 6 deletions
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55
qa/rpc-tests/segwit.py
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@ -11,9 +11,9 @@ from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import *
from test_framework.mininode import sha256, ripemd160, CTransaction, CTxIn, COutPoint, CTxOut
from test_framework.address import script_to_p2sh, key_to_p2pkh
from test_framework.script import CScript, OP_HASH160, OP_CHECKSIG, OP_0, hash160, OP_EQUAL, OP_DUP, OP_EQUALVERIFY, OP_1, OP_2, OP_CHECKMULTISIG
from test_framework.script import CScript, OP_HASH160, OP_CHECKSIG, OP_0, hash160, OP_EQUAL, OP_DUP, OP_EQUALVERIFY, OP_1, OP_2, OP_CHECKMULTISIG, OP_TRUE
from io import BytesIO
from test_framework.mininode import FromHex
from test_framework.mininode import ToHex, FromHex, COIN
NODE_0 = 0
NODE_1 = 1
@ -251,11 +251,54 @@ class SegWitTest(BitcoinTestFramework):
assert(tmpl['transactions'][0]['txid'] == txid)
assert(tmpl['transactions'][0]['sigops'] == 8)
self.nodes[0].generate(1) # Mine a block to clear the gbt cache
print("Non-segwit miners are able to use GBT response after activation.")
txid = send_to_witness(1, self.nodes[0], find_unspent(self.nodes[0], 50), self.pubkey[0], False, Decimal("49.998"))
tmpl = self.nodes[0].getblocktemplate()
# TODO: add a transaction with witness to mempool, and verify it's not
# selected for mining.
# Create a 3-tx chain: tx1 (non-segwit input, paying to a segwit output) ->
# tx2 (segwit input, paying to a non-segwit output) ->
# tx3 (non-segwit input, paying to a non-segwit output).
# tx1 is allowed to appear in the block, but no others.
txid1 = send_to_witness(1, self.nodes[0], find_unspent(self.nodes[0], 50), self.pubkey[0], False, Decimal("49.996"))
hex_tx = self.nodes[0].gettransaction(txid)['hex']
tx = FromHex(CTransaction(), hex_tx)
assert(tx.wit.is_null()) # This should not be a segwit input
assert(txid1 in self.nodes[0].getrawmempool())
# Now create tx2, which will spend from txid1.
tx = CTransaction()
tx.vin.append(CTxIn(COutPoint(int(txid1, 16), 0), b''))
tx.vout.append(CTxOut(int(49.99*COIN), CScript([OP_TRUE])))
tx2_hex = self.nodes[0].signrawtransaction(ToHex(tx))['hex']
txid2 = self.nodes[0].sendrawtransaction(tx2_hex)
tx = FromHex(CTransaction(), tx2_hex)
assert(not tx.wit.is_null())
# Now create tx3, which will spend from txid2
tx = CTransaction()
tx.vin.append(CTxIn(COutPoint(int(txid2, 16), 0), b""))
tx.vout.append(CTxOut(int(49.95*COIN), CScript([OP_TRUE]))) # Huge fee
tx.calc_sha256()
txid3 = self.nodes[0].sendrawtransaction(ToHex(tx))
assert(tx.wit.is_null())
assert(txid3 in self.nodes[0].getrawmempool())
# Now try calling getblocktemplate() without segwit support.
template = self.nodes[0].getblocktemplate()
# Check that tx1 is the only transaction of the 3 in the template.
template_txids = [ t['txid'] for t in template['transactions'] ]
assert(txid2 not in template_txids and txid3 not in template_txids)
assert(txid1 in template_txids)
# Check that running with segwit support results in all 3 being included.
template = self.nodes[0].getblocktemplate({"rules": ["segwit"]})
template_txids = [ t['txid'] for t in template['transactions'] ]
assert(txid1 in template_txids)
assert(txid2 in template_txids)
assert(txid3 in template_txids)
# Mine a block to clear the gbt cache again.
self.nodes[0].generate(1)
print("Verify behaviour of importaddress, addwitnessaddress and listunspent")