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Fix flake8 warnings in p2p-versionbits-warning.py

0.16
John Newbery 7 years ago
parent
commit
ef2beb2c13
  1. 25
      test/functional/feature_versionbits_warning.py

25
test/functional/feature_versionbits_warning.py

@ -7,12 +7,13 @@ @@ -7,12 +7,13 @@
Generate chains with block versions that appear to be signalling unknown
soft-forks, and test that warning alerts are generated.
"""
from test_framework.mininode import *
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import *
import os
import re
from test_framework.blocktools import create_block, create_coinbase
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
@ -35,13 +36,13 @@ class VersionBitsWarningTest(BitcoinTestFramework): @@ -35,13 +36,13 @@ class VersionBitsWarningTest(BitcoinTestFramework):
def setup_network(self):
self.alert_filename = os.path.join(self.options.tmpdir, "alert.txt")
# 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
self.extra_args = [["-alertnotify=echo %s >> \"" + self.alert_filename + "\""]]
self.setup_nodes()
# Send numblocks blocks via peer with nVersionToUse set.
def send_blocks_with_version(self, peer, numblocks, nVersionToUse):
# Send numblocks blocks via peer with version set.
def send_blocks_with_version(self, peer, numblocks, version):
tip = self.nodes[0].getbestblockhash()
height = self.nodes[0].getblockcount()
block_time = self.nodes[0].getblockheader(tip)["time"] + 1
@ -49,7 +50,7 @@ class VersionBitsWarningTest(BitcoinTestFramework): @@ -49,7 +50,7 @@ class VersionBitsWarningTest(BitcoinTestFramework):
for _ in range(numblocks):
block = create_block(tip, create_coinbase(height + 1), block_time)
block.nVersion = nVersionToUse
block.nVersion = version
block.solve()
peer.send_message(msg_block(block))
block_time += 1
@ -76,8 +77,8 @@ class VersionBitsWarningTest(BitcoinTestFramework): @@ -76,8 +77,8 @@ class VersionBitsWarningTest(BitcoinTestFramework):
# 2. Now build one period of blocks on the tip, with < VB_THRESHOLD
# blocks signaling some unknown bit.
nVersion = VB_TOP_BITS | (1<<VB_UNKNOWN_BIT)
self.send_blocks_with_version(self.nodes[0].p2p, VB_THRESHOLD-1, nVersion)
version = VB_TOP_BITS | (1 << VB_UNKNOWN_BIT)
self.send_blocks_with_version(self.nodes[0].p2p, VB_THRESHOLD - 1, version)
# Fill rest of period with regular version blocks
self.nodes[0].generate(VB_PERIOD - VB_THRESHOLD + 1)
@ -88,7 +89,7 @@ class VersionBitsWarningTest(BitcoinTestFramework): @@ -88,7 +89,7 @@ class VersionBitsWarningTest(BitcoinTestFramework):
# 3. Now build one period of blocks with >= VB_THRESHOLD blocks signaling
# 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)
# Might not get a versionbits-related alert yet, as we should
# have gotten a different alert due to more than 51/100 blocks
@ -103,7 +104,7 @@ class VersionBitsWarningTest(BitcoinTestFramework): @@ -103,7 +104,7 @@ class VersionBitsWarningTest(BitcoinTestFramework):
self.nodes[0].generate(VB_PERIOD)
self.stop_nodes()
# Empty out the alert file
with open(self.alert_filename, 'w', encoding='utf8') as _:
with open(self.alert_filename, 'w', encoding='utf8'):
pass
self.start_nodes()

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