zcashd/qa/rpc-tests/tx_expiry_helper.py

102 lines
3.1 KiB
Python
Executable File

#!/usr/bin/env python3
# Copyright (c) 2019 The Zcash developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or https://www.opensource.org/licenses/mit-license.php .
#
# Common code for testing transaction expiry
#
from test_framework.mininode import CTransaction, NodeConnCB, mininode_lock, msg_ping, \
msg_pong
from test_framework.util import fail
import io
import time
from binascii import unhexlify
class TestNode(NodeConnCB):
def __init__(self):
NodeConnCB.__init__(self)
self.create_callback_map()
self.connection = None
self.ping_counter = 1
self.last_pong = msg_pong()
self.conn_closed = False
def add_connection(self, conn):
self.connection = conn
# Spin until verack message is received from the node.
# We use this to signal that our test can begin. This
# is called from the testing thread, so it needs to acquire
# the global lock.
def wait_for_verack(self):
while True:
with mininode_lock:
if self.verack_received:
return
time.sleep(0.05)
# Wrapper for the NodeConn's send_message function
def send_message(self, message):
self.connection.send_message(message)
def on_close(self, conn):
self.conn_closed = True
def on_reject(self, conn, message):
conn.rejectMessage = message
# Track the last getdata message we receive (used in the test)
def on_getdata(self, conn, message):
self.last_getdata = message
def on_tx(self, conn, message):
self.last_tx = message
def on_inv(self, conn, message):
self.last_inv = message
def on_notfound(self, conn, message):
self.last_notfound = message
def on_pong(self, conn, message):
self.last_pong = message
# The following function is mostly copied from p2p-acceptblock.py
# Sync up with the node after delivery of a message
def sync_with_ping(self, timeout=30, waiting_for=None):
self.connection.send_message(msg_ping(nonce=self.ping_counter))
sleep_time = 0.05
while timeout > 0:
with mininode_lock:
ready = True if waiting_for is None else waiting_for(self) is not None
if ready and self.last_pong.nonce == self.ping_counter:
self.ping_counter += 1
return
time.sleep(sleep_time)
timeout -= sleep_time
fail("Should have received pong")
def create_transaction(node, coinbase, to_address, amount, expiry_height):
from_txid = node.getblock(coinbase)['tx'][0]
inputs = [{"txid": from_txid, "vout": 0}]
outputs = {to_address: amount}
rawtx = node.createrawtransaction(inputs, outputs)
tx = CTransaction()
# Set the expiry height
f = io.BytesIO(unhexlify(rawtx))
tx.deserialize(f)
tx.nExpiryHeight = expiry_height
rawtx = tx.serialize().hex()
signresult = node.signrawtransaction(rawtx)
f = io.BytesIO(unhexlify(signresult['hex']))
tx.deserialize(f)
tx.rehash()
return tx