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Fix flake8 warnings in p2p-versionbits-warning.py

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This commit is contained in:
John Newbery 2018-01-24 12:45:21 -05:00
parent 6970b30c6f
commit ef2beb2c13
1 changed files with 19 additions and 18 deletions
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37
test/functional/feature_versionbits_warning.py
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@ -7,17 +7,18 @@
Generate chains with block versions that appear to be signalling unknown Generate chains with block versions that appear to be signalling unknown
soft-forks, and test that warning alerts are generated. soft-forks, and test that warning alerts are generated.
""" """
import os
from test_framework.mininode import *
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import *
import re import re
from test_framework.blocktools import create_block, create_coinbase
VB_PERIOD = 144 # versionbits period length for regtest from test_framework.blocktools import create_block, create_coinbase
VB_THRESHOLD = 108 # versionbits activation threshold for regtest from test_framework.messages import msg_block
from test_framework.mininode import P2PInterface, network_thread_start
from test_framework.test_framework import BitcoinTestFramework
VB_PERIOD = 144 # versionbits period length for regtest
VB_THRESHOLD = 108 # versionbits activation threshold for regtest
VB_TOP_BITS = 0x20000000 VB_TOP_BITS = 0x20000000
VB_UNKNOWN_BIT = 27 # Choose a bit unassigned to any deployment VB_UNKNOWN_BIT = 27 # Choose a bit unassigned to any deployment
WARN_UNKNOWN_RULES_MINED = "Unknown block versions being mined! It's possible unknown rules are in effect" WARN_UNKNOWN_RULES_MINED = "Unknown block versions being mined! It's possible unknown rules are in effect"
WARN_UNKNOWN_RULES_ACTIVE = "unknown new rules activated (versionbit {})".format(VB_UNKNOWN_BIT) WARN_UNKNOWN_RULES_ACTIVE = "unknown new rules activated (versionbit {})".format(VB_UNKNOWN_BIT)
@ -35,21 +36,21 @@ class VersionBitsWarningTest(BitcoinTestFramework):
def setup_network(self): def setup_network(self):
self.alert_filename = os.path.join(self.options.tmpdir, "alert.txt") self.alert_filename = os.path.join(self.options.tmpdir, "alert.txt")
# Open and close to create zero-length file # Open and close to create zero-length file
with open(self.alert_filename, 'w', encoding='utf8') as _: with open(self.alert_filename, 'w', encoding='utf8'):
pass pass
self.extra_args = [["-alertnotify=echo %s >> \"" + self.alert_filename + "\""]] self.extra_args = [["-alertnotify=echo %s >> \"" + self.alert_filename + "\""]]
self.setup_nodes() self.setup_nodes()
# Send numblocks blocks via peer with nVersionToUse set. # Send numblocks blocks via peer with version set.
def send_blocks_with_version(self, peer, numblocks, nVersionToUse): def send_blocks_with_version(self, peer, numblocks, version):
tip = self.nodes[0].getbestblockhash() tip = self.nodes[0].getbestblockhash()
height = self.nodes[0].getblockcount() height = self.nodes[0].getblockcount()
block_time = self.nodes[0].getblockheader(tip)["time"]+1 block_time = self.nodes[0].getblockheader(tip)["time"] + 1
tip = int(tip, 16) tip = int(tip, 16)
for _ in range(numblocks): for _ in range(numblocks):
block = create_block(tip, create_coinbase(height+1), block_time) block = create_block(tip, create_coinbase(height + 1), block_time)
block.nVersion = nVersionToUse block.nVersion = version
block.solve() block.solve()
peer.send_message(msg_block(block)) peer.send_message(msg_block(block))
block_time += 1 block_time += 1
@ -76,8 +77,8 @@ class VersionBitsWarningTest(BitcoinTestFramework):
# 2. Now build one period of blocks on the tip, with < VB_THRESHOLD # 2. Now build one period of blocks on the tip, with < VB_THRESHOLD
# blocks signaling some unknown bit. # blocks signaling some unknown bit.
nVersion = VB_TOP_BITS | (1<<VB_UNKNOWN_BIT) version = VB_TOP_BITS | (1 << VB_UNKNOWN_BIT)
self.send_blocks_with_version(self.nodes[0].p2p, VB_THRESHOLD-1, nVersion) self.send_blocks_with_version(self.nodes[0].p2p, VB_THRESHOLD - 1, version)
# Fill rest of period with regular version blocks # Fill rest of period with regular version blocks
self.nodes[0].generate(VB_PERIOD - VB_THRESHOLD + 1) self.nodes[0].generate(VB_PERIOD - VB_THRESHOLD + 1)
@ -88,7 +89,7 @@ class VersionBitsWarningTest(BitcoinTestFramework):
# 3. Now build one period of blocks with >= VB_THRESHOLD blocks signaling # 3. Now build one period of blocks with >= VB_THRESHOLD blocks signaling
# some unknown bit # some unknown bit
self.send_blocks_with_version(self.nodes[0].p2p, VB_THRESHOLD, nVersion) self.send_blocks_with_version(self.nodes[0].p2p, VB_THRESHOLD, version)
self.nodes[0].generate(VB_PERIOD - VB_THRESHOLD) self.nodes[0].generate(VB_PERIOD - VB_THRESHOLD)
# Might not get a versionbits-related alert yet, as we should # Might not get a versionbits-related alert yet, as we should
# have gotten a different alert due to more than 51/100 blocks # have gotten a different alert due to more than 51/100 blocks
@ -103,7 +104,7 @@ class VersionBitsWarningTest(BitcoinTestFramework):
self.nodes[0].generate(VB_PERIOD) self.nodes[0].generate(VB_PERIOD)
self.stop_nodes() self.stop_nodes()
# Empty out the alert file # Empty out the alert file
with open(self.alert_filename, 'w', encoding='utf8') as _: with open(self.alert_filename, 'w', encoding='utf8'):
pass pass
self.start_nodes() self.start_nodes()