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tests: functional tests for Schnorr/Taproot/Tapscript

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A large functional test is added that automatically generates random transactions which
exercise various aspects of the new rules, and verifies they are accepted into the mempool
(when appropriate), and correctly accepted/rejected in (Python-constructed) blocks.

Includes sighashing code and many tests by Johnson Lau.
Includes a test by Matthew Zipkin.
Includes several tests and improvements by Greg Sanders.
This commit is contained in:
Pieter Wuille
2020-09-13 22:20:17 -07:00
parent 3c226639eb
commit f06e6d0345
5 changed files with 1553 additions and 17 deletions
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19
test/functional/test_framework/blocktools.py
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@ -43,7 +43,9 @@ from .script import (
from .util import assert_equal
from io import BytesIO
WITNESS_SCALE_FACTOR = 4
MAX_BLOCK_SIGOPS = 20000
MAX_BLOCK_SIGOPS_WEIGHT = MAX_BLOCK_SIGOPS * WITNESS_SCALE_FACTOR
# Genesis block time (regtest)
TIME_GENESIS_BLOCK = 1296688602
@ -101,22 +103,31 @@ def script_BIP34_coinbase_height(height):
return CScript([CScriptNum(height)])
def create_coinbase(height, pubkey=None):
"""Create a coinbase transaction, assuming no miner fees.
def create_coinbase(height, pubkey=None, extra_output_script=None, fees=0):
"""Create a coinbase transaction.
If pubkey is passed in, the coinbase output will be a P2PK output;
otherwise an anyone-can-spend output."""
otherwise an anyone-can-spend output.
If extra_output_script is given, make a 0-value output to that
script. This is useful to pad block weight/sigops as needed. """
coinbase = CTransaction()
coinbase.vin.append(CTxIn(COutPoint(0, 0xffffffff), script_BIP34_coinbase_height(height), 0xffffffff))
coinbaseoutput = CTxOut()
coinbaseoutput.nValue = 50 * COIN
halvings = int(height / 150) # regtest
coinbaseoutput.nValue >>= halvings
if (pubkey is not None):
coinbaseoutput.nValue += fees
if pubkey is not None:
coinbaseoutput.scriptPubKey = CScript([pubkey, OP_CHECKSIG])
else:
coinbaseoutput.scriptPubKey = CScript([OP_TRUE])
coinbase.vout = [coinbaseoutput]
if extra_output_script is not None:
coinbaseoutput2 = CTxOut()
coinbaseoutput2.nValue = 0
coinbaseoutput2.scriptPubKey = extra_output_script
coinbase.vout.append(coinbaseoutput2)
coinbase.calc_sha256()
return coinbase