533 lines
20 KiB
Python
533 lines
20 KiB
Python
#!/usr/bin/env python3
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# Copyright (c) 2014-2016 The Bitcoin Core developers
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# Distributed under the MIT software license, see the accompanying
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# file COPYING or http://www.opensource.org/licenses/mit-license.php.
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"""Helpful routines for regression testing."""
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from base64 import b64encode
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from binascii import hexlify, unhexlify
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from decimal import Decimal, ROUND_DOWN
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import hashlib
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import json
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import logging
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import os
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import random
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import re
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import time
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from . import coverage
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from .authproxy import AuthServiceProxy, JSONRPCException
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logger = logging.getLogger("TestFramework.utils")
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# Assert functions
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##################
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def assert_fee_amount(fee, tx_size, fee_per_kB):
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"""Assert the fee was in range"""
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target_fee = tx_size * fee_per_kB / 1000
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if fee < target_fee:
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raise AssertionError("Fee of %s BTC too low! (Should be %s BTC)" % (str(fee), str(target_fee)))
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# allow the wallet's estimation to be at most 2 bytes off
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if fee > (tx_size + 2) * fee_per_kB / 1000:
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raise AssertionError("Fee of %s BTC too high! (Should be %s BTC)" % (str(fee), str(target_fee)))
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def assert_equal(thing1, thing2, *args):
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if thing1 != thing2 or any(thing1 != arg for arg in args):
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raise AssertionError("not(%s)" % " == ".join(str(arg) for arg in (thing1, thing2) + args))
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def assert_greater_than(thing1, thing2):
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if thing1 <= thing2:
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raise AssertionError("%s <= %s" % (str(thing1), str(thing2)))
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def assert_greater_than_or_equal(thing1, thing2):
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if thing1 < thing2:
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raise AssertionError("%s < %s" % (str(thing1), str(thing2)))
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def assert_raises(exc, fun, *args, **kwds):
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assert_raises_message(exc, None, fun, *args, **kwds)
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def assert_raises_message(exc, message, fun, *args, **kwds):
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try:
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fun(*args, **kwds)
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except exc as e:
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if message is not None and message not in e.error['message']:
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raise AssertionError("Expected substring not found:" + e.error['message'])
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except Exception as e:
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raise AssertionError("Unexpected exception raised: " + type(e).__name__)
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else:
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raise AssertionError("No exception raised")
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def assert_raises_jsonrpc(code, message, fun, *args, **kwds):
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"""Run an RPC and verify that a specific JSONRPC exception code and message is raised.
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Calls function `fun` with arguments `args` and `kwds`. Catches a JSONRPCException
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and verifies that the error code and message are as expected. Throws AssertionError if
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no JSONRPCException was returned or if the error code/message are not as expected.
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Args:
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code (int), optional: the error code returned by the RPC call (defined
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in src/rpc/protocol.h). Set to None if checking the error code is not required.
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message (string), optional: [a substring of] the error string returned by the
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RPC call. Set to None if checking the error string is not required
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fun (function): the function to call. This should be the name of an RPC.
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args*: positional arguments for the function.
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kwds**: named arguments for the function.
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"""
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try:
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fun(*args, **kwds)
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except JSONRPCException as e:
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# JSONRPCException was thrown as expected. Check the code and message values are correct.
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if (code is not None) and (code != e.error["code"]):
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raise AssertionError("Unexpected JSONRPC error code %i" % e.error["code"])
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if (message is not None) and (message not in e.error['message']):
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raise AssertionError("Expected substring not found:" + e.error['message'])
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except Exception as e:
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raise AssertionError("Unexpected exception raised: " + type(e).__name__)
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else:
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raise AssertionError("No exception raised")
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def assert_is_hex_string(string):
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try:
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int(string, 16)
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except Exception as e:
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raise AssertionError(
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"Couldn't interpret %r as hexadecimal; raised: %s" % (string, e))
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def assert_is_hash_string(string, length=64):
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if not isinstance(string, str):
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raise AssertionError("Expected a string, got type %r" % type(string))
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elif length and len(string) != length:
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raise AssertionError(
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"String of length %d expected; got %d" % (length, len(string)))
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elif not re.match('[abcdef0-9]+$', string):
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raise AssertionError(
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"String %r contains invalid characters for a hash." % string)
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def assert_array_result(object_array, to_match, expected, should_not_find=False):
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"""
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Pass in array of JSON objects, a dictionary with key/value pairs
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to match against, and another dictionary with expected key/value
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pairs.
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If the should_not_find flag is true, to_match should not be found
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in object_array
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"""
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if should_not_find:
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assert_equal(expected, {})
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num_matched = 0
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for item in object_array:
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all_match = True
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for key, value in to_match.items():
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if item[key] != value:
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all_match = False
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if not all_match:
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continue
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elif should_not_find:
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num_matched = num_matched + 1
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for key, value in expected.items():
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if item[key] != value:
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raise AssertionError("%s : expected %s=%s" % (str(item), str(key), str(value)))
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num_matched = num_matched + 1
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if num_matched == 0 and not should_not_find:
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raise AssertionError("No objects matched %s" % (str(to_match)))
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if num_matched > 0 and should_not_find:
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raise AssertionError("Objects were found %s" % (str(to_match)))
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# Utility functions
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###################
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def check_json_precision():
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"""Make sure json library being used does not lose precision converting BTC values"""
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n = Decimal("20000000.00000003")
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satoshis = int(json.loads(json.dumps(float(n))) * 1.0e8)
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if satoshis != 2000000000000003:
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raise RuntimeError("JSON encode/decode loses precision")
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def count_bytes(hex_string):
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return len(bytearray.fromhex(hex_string))
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def bytes_to_hex_str(byte_str):
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return hexlify(byte_str).decode('ascii')
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def hash256(byte_str):
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sha256 = hashlib.sha256()
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sha256.update(byte_str)
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sha256d = hashlib.sha256()
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sha256d.update(sha256.digest())
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return sha256d.digest()[::-1]
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def hex_str_to_bytes(hex_str):
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return unhexlify(hex_str.encode('ascii'))
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def str_to_b64str(string):
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return b64encode(string.encode('utf-8')).decode('ascii')
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def satoshi_round(amount):
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return Decimal(amount).quantize(Decimal('0.00000001'), rounding=ROUND_DOWN)
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def wait_until(predicate, *, attempts=float('inf'), timeout=float('inf'), lock=None):
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if attempts == float('inf') and timeout == float('inf'):
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timeout = 60
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attempt = 0
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timeout += time.time()
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while attempt < attempts and time.time() < timeout:
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if lock:
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with lock:
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if predicate():
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return
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else:
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if predicate():
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return
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attempt += 1
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time.sleep(0.05)
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# Print the cause of the timeout
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assert_greater_than(attempts, attempt)
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assert_greater_than(timeout, time.time())
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raise RuntimeError('Unreachable')
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# RPC/P2P connection constants and functions
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############################################
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# The maximum number of nodes a single test can spawn
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MAX_NODES = 8
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# Don't assign rpc or p2p ports lower than this
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PORT_MIN = 11000
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# The number of ports to "reserve" for p2p and rpc, each
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PORT_RANGE = 5000
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class PortSeed:
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# Must be initialized with a unique integer for each process
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n = None
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def get_rpc_proxy(url, node_number, timeout=None, coveragedir=None):
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"""
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Args:
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url (str): URL of the RPC server to call
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node_number (int): the node number (or id) that this calls to
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Kwargs:
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timeout (int): HTTP timeout in seconds
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Returns:
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AuthServiceProxy. convenience object for making RPC calls.
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"""
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proxy_kwargs = {}
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if timeout is not None:
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proxy_kwargs['timeout'] = timeout
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proxy = AuthServiceProxy(url, **proxy_kwargs)
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proxy.url = url # store URL on proxy for info
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coverage_logfile = coverage.get_filename(
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coveragedir, node_number) if coveragedir else None
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return coverage.AuthServiceProxyWrapper(proxy, coverage_logfile)
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def p2p_port(n):
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assert(n <= MAX_NODES)
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return PORT_MIN + n + (MAX_NODES * PortSeed.n) % (PORT_RANGE - 1 - MAX_NODES)
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def rpc_port(n):
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return PORT_MIN + PORT_RANGE + n + (MAX_NODES * PortSeed.n) % (PORT_RANGE - 1 - MAX_NODES)
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def rpc_url(datadir, i, rpchost=None):
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rpc_u, rpc_p = get_auth_cookie(datadir)
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host = '127.0.0.1'
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port = rpc_port(i)
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if rpchost:
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parts = rpchost.split(':')
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if len(parts) == 2:
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host, port = parts
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else:
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host = rpchost
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return "http://%s:%s@%s:%d" % (rpc_u, rpc_p, host, int(port))
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# Node functions
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################
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def initialize_datadir(dirname, n):
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datadir = os.path.join(dirname, "node" + str(n))
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if not os.path.isdir(datadir):
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os.makedirs(datadir)
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with open(os.path.join(datadir, "bitcoin.conf"), 'w', encoding='utf8') as f:
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f.write("regtest=1\n")
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f.write("port=" + str(p2p_port(n)) + "\n")
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f.write("rpcport=" + str(rpc_port(n)) + "\n")
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f.write("listenonion=0\n")
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return datadir
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def get_datadir_path(dirname, n):
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return os.path.join(dirname, "node" + str(n))
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def get_auth_cookie(datadir):
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user = None
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password = None
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if os.path.isfile(os.path.join(datadir, "bitcoin.conf")):
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with open(os.path.join(datadir, "bitcoin.conf"), 'r', encoding='utf8') as f:
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for line in f:
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if line.startswith("rpcuser="):
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assert user is None # Ensure that there is only one rpcuser line
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user = line.split("=")[1].strip("\n")
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if line.startswith("rpcpassword="):
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assert password is None # Ensure that there is only one rpcpassword line
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password = line.split("=")[1].strip("\n")
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if os.path.isfile(os.path.join(datadir, "regtest", ".cookie")):
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with open(os.path.join(datadir, "regtest", ".cookie"), 'r') as f:
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userpass = f.read()
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split_userpass = userpass.split(':')
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user = split_userpass[0]
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password = split_userpass[1]
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if user is None or password is None:
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raise ValueError("No RPC credentials")
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return user, password
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def log_filename(dirname, n_node, logname):
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return os.path.join(dirname, "node" + str(n_node), "regtest", logname)
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def get_bip9_status(node, key):
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info = node.getblockchaininfo()
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return info['bip9_softforks'][key]
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def set_node_times(nodes, t):
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for node in nodes:
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node.setmocktime(t)
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def disconnect_nodes(from_connection, node_num):
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for peer_id in [peer['id'] for peer in from_connection.getpeerinfo() if "testnode%d" % node_num in peer['subver']]:
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from_connection.disconnectnode(nodeid=peer_id)
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for _ in range(50):
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if [peer['id'] for peer in from_connection.getpeerinfo() if "testnode%d" % node_num in peer['subver']] == []:
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break
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time.sleep(0.1)
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else:
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raise AssertionError("timed out waiting for disconnect")
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def connect_nodes(from_connection, node_num):
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ip_port = "127.0.0.1:" + str(p2p_port(node_num))
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from_connection.addnode(ip_port, "onetry")
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# poll until version handshake complete to avoid race conditions
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# with transaction relaying
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while any(peer['version'] == 0 for peer in from_connection.getpeerinfo()):
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time.sleep(0.1)
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def connect_nodes_bi(nodes, a, b):
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connect_nodes(nodes[a], b)
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connect_nodes(nodes[b], a)
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def sync_blocks(rpc_connections, *, wait=1, timeout=60):
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"""
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Wait until everybody has the same tip.
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sync_blocks needs to be called with an rpc_connections set that has least
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one node already synced to the latest, stable tip, otherwise there's a
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chance it might return before all nodes are stably synced.
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"""
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# Use getblockcount() instead of waitforblockheight() to determine the
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# initial max height because the two RPCs look at different internal global
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# variables (chainActive vs latestBlock) and the former gets updated
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# earlier.
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maxheight = max(x.getblockcount() for x in rpc_connections)
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start_time = cur_time = time.time()
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while cur_time <= start_time + timeout:
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tips = [r.waitforblockheight(maxheight, int(wait * 1000)) for r in rpc_connections]
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if all(t["height"] == maxheight for t in tips):
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if all(t["hash"] == tips[0]["hash"] for t in tips):
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return
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raise AssertionError("Block sync failed, mismatched block hashes:{}".format(
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"".join("\n {!r}".format(tip) for tip in tips)))
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cur_time = time.time()
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raise AssertionError("Block sync to height {} timed out:{}".format(
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maxheight, "".join("\n {!r}".format(tip) for tip in tips)))
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def sync_chain(rpc_connections, *, wait=1, timeout=60):
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"""
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Wait until everybody has the same best block
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"""
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while timeout > 0:
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best_hash = [x.getbestblockhash() for x in rpc_connections]
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if best_hash == [best_hash[0]] * len(best_hash):
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return
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time.sleep(wait)
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timeout -= wait
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raise AssertionError("Chain sync failed: Best block hashes don't match")
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def sync_mempools(rpc_connections, *, wait=1, timeout=60):
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"""
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Wait until everybody has the same transactions in their memory
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pools
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"""
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while timeout > 0:
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pool = set(rpc_connections[0].getrawmempool())
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num_match = 1
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for i in range(1, len(rpc_connections)):
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if set(rpc_connections[i].getrawmempool()) == pool:
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num_match = num_match + 1
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if num_match == len(rpc_connections):
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return
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time.sleep(wait)
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timeout -= wait
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raise AssertionError("Mempool sync failed")
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# Transaction/Block functions
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#############################
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def find_output(node, txid, amount):
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"""
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Return index to output of txid with value amount
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Raises exception if there is none.
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"""
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txdata = node.getrawtransaction(txid, 1)
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for i in range(len(txdata["vout"])):
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if txdata["vout"][i]["value"] == amount:
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return i
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raise RuntimeError("find_output txid %s : %s not found" % (txid, str(amount)))
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def gather_inputs(from_node, amount_needed, confirmations_required=1):
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"""
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Return a random set of unspent txouts that are enough to pay amount_needed
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"""
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assert(confirmations_required >= 0)
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utxo = from_node.listunspent(confirmations_required)
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random.shuffle(utxo)
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inputs = []
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total_in = Decimal("0.00000000")
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while total_in < amount_needed and len(utxo) > 0:
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t = utxo.pop()
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total_in += t["amount"]
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inputs.append({"txid": t["txid"], "vout": t["vout"], "address": t["address"]})
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if total_in < amount_needed:
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raise RuntimeError("Insufficient funds: need %d, have %d" % (amount_needed, total_in))
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return (total_in, inputs)
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def make_change(from_node, amount_in, amount_out, fee):
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"""
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Create change output(s), return them
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"""
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outputs = {}
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amount = amount_out + fee
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change = amount_in - amount
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if change > amount * 2:
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# Create an extra change output to break up big inputs
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change_address = from_node.getnewaddress()
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# Split change in two, being careful of rounding:
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outputs[change_address] = Decimal(change / 2).quantize(Decimal('0.00000001'), rounding=ROUND_DOWN)
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change = amount_in - amount - outputs[change_address]
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if change > 0:
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outputs[from_node.getnewaddress()] = change
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return outputs
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def random_transaction(nodes, amount, min_fee, fee_increment, fee_variants):
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"""
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Create a random transaction.
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Returns (txid, hex-encoded-transaction-data, fee)
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"""
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from_node = random.choice(nodes)
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to_node = random.choice(nodes)
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fee = min_fee + fee_increment * random.randint(0, fee_variants)
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(total_in, inputs) = gather_inputs(from_node, amount + fee)
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outputs = make_change(from_node, total_in, amount, fee)
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outputs[to_node.getnewaddress()] = float(amount)
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rawtx = from_node.createrawtransaction(inputs, outputs)
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signresult = from_node.signrawtransaction(rawtx)
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txid = from_node.sendrawtransaction(signresult["hex"], True)
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return (txid, signresult["hex"], fee)
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# Helper to create at least "count" utxos
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# Pass in a fee that is sufficient for relay and mining new transactions.
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def create_confirmed_utxos(fee, node, count):
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to_generate = int(0.5 * count) + 101
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while to_generate > 0:
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node.generate(min(25, to_generate))
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to_generate -= 25
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utxos = node.listunspent()
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iterations = count - len(utxos)
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addr1 = node.getnewaddress()
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addr2 = node.getnewaddress()
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if iterations <= 0:
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return utxos
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for i in range(iterations):
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t = utxos.pop()
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inputs = []
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inputs.append({"txid": t["txid"], "vout": t["vout"]})
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outputs = {}
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send_value = t['amount'] - fee
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outputs[addr1] = satoshi_round(send_value / 2)
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outputs[addr2] = satoshi_round(send_value / 2)
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raw_tx = node.createrawtransaction(inputs, outputs)
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signed_tx = node.signrawtransaction(raw_tx)["hex"]
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node.sendrawtransaction(signed_tx)
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while (node.getmempoolinfo()['size'] > 0):
|
|
node.generate(1)
|
|
|
|
utxos = node.listunspent()
|
|
assert(len(utxos) >= count)
|
|
return utxos
|
|
|
|
# Create large OP_RETURN txouts that can be appended to a transaction
|
|
# to make it large (helper for constructing large transactions).
|
|
def gen_return_txouts():
|
|
# Some pre-processing to create a bunch of OP_RETURN txouts to insert into transactions we create
|
|
# So we have big transactions (and therefore can't fit very many into each block)
|
|
# create one script_pubkey
|
|
script_pubkey = "6a4d0200" # OP_RETURN OP_PUSH2 512 bytes
|
|
for i in range(512):
|
|
script_pubkey = script_pubkey + "01"
|
|
# concatenate 128 txouts of above script_pubkey which we'll insert before the txout for change
|
|
txouts = "81"
|
|
for k in range(128):
|
|
# add txout value
|
|
txouts = txouts + "0000000000000000"
|
|
# add length of script_pubkey
|
|
txouts = txouts + "fd0402"
|
|
# add script_pubkey
|
|
txouts = txouts + script_pubkey
|
|
return txouts
|
|
|
|
def create_tx(node, coinbase, to_address, amount):
|
|
inputs = [{"txid": coinbase, "vout": 0}]
|
|
outputs = {to_address: amount}
|
|
rawtx = node.createrawtransaction(inputs, outputs)
|
|
signresult = node.signrawtransaction(rawtx)
|
|
assert_equal(signresult["complete"], True)
|
|
return signresult["hex"]
|
|
|
|
# Create a spend of each passed-in utxo, splicing in "txouts" to each raw
|
|
# transaction to make it large. See gen_return_txouts() above.
|
|
def create_lots_of_big_transactions(node, txouts, utxos, num, fee):
|
|
addr = node.getnewaddress()
|
|
txids = []
|
|
for _ in range(num):
|
|
t = utxos.pop()
|
|
inputs = [{"txid": t["txid"], "vout": t["vout"]}]
|
|
outputs = {}
|
|
change = t['amount'] - fee
|
|
outputs[addr] = satoshi_round(change)
|
|
rawtx = node.createrawtransaction(inputs, outputs)
|
|
newtx = rawtx[0:92]
|
|
newtx = newtx + txouts
|
|
newtx = newtx + rawtx[94:]
|
|
signresult = node.signrawtransaction(newtx, None, None, "NONE")
|
|
txid = node.sendrawtransaction(signresult["hex"], True)
|
|
txids.append(txid)
|
|
return txids
|
|
|
|
def mine_large_block(node, utxos=None):
|
|
# generate a 66k transaction,
|
|
# and 14 of them is close to the 1MB block limit
|
|
num = 14
|
|
txouts = gen_return_txouts()
|
|
utxos = utxos if utxos is not None else []
|
|
if len(utxos) < num:
|
|
utxos.clear()
|
|
utxos.extend(node.listunspent())
|
|
fee = 100 * node.getnetworkinfo()["relayfee"]
|
|
create_lots_of_big_transactions(node, txouts, utxos, num, fee=fee)
|
|
node.generate(1)
|