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9d33b30a87
dac7a111bdd3b0233d94cf68dae7a8bfc6ac9c64 refactor: test: use _ variable for unused loop counters (Sebastian Falbesoner)
Pull request description:
This tiny PR substitutes Python loops in the form of `for x in range(N): ...` by `for _ in range(N): ...` where applicable. The idea is indicating to the reader that a block (or statement, in list comprehensions) is just repeated N times, and that the loop counter is not used in the body, hence using the throwaway variable. This is already done quite often in the current tests (see e.g. `$ git grep "for _ in range("`). Another alternative would be using `itertools.repeat` (according to Python core developer Raymond Hettinger it's [even faster](https://twitter.com/raymondh/status/1144527183341375488)), but that doesn't seem to be widespread in use and I'm not sure about a readability increase.
The only drawback I see is that whenever one wants to debug loop iterations, one would need to introduce a loop variable again. Reviewing this is basically a no-brainer, since tests would fail immediately if a a substitution has taken place on a loop where the variable is used.
Instances to replace were found by `$ git grep "for.*in range("` and manually checked.
ACKs for top commit:
darosior:
ACK dac7a111bdd3b0233d94cf68dae7a8bfc6ac9c64
instagibbs:
manual inspection ACK dac7a111bd
practicalswift:
ACK dac7a111bdd3b0233d94cf68dae7a8bfc6ac9c64 -- the updated code is easier to reason about since the throwaway nature of a variable is expressed explicitly (using the Pythonic `_` idiom) instead of implicitly. Explicit is better than implicit was we all know by now :)
Tree-SHA512: 5f43ded9ce14e5e00b3876ec445b90acda1842f813149ae7bafa93f3ac3d510bb778e2c701187fd2c73585e6b87797bb2d2987139bd1a9ba7d58775a59392406
210 lines
9.0 KiB
Python
Executable File
210 lines
9.0 KiB
Python
Executable File
#!/usr/bin/env python3
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# Copyright (c) 2016-2020 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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"""Test the dumpwallet RPC."""
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import datetime
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import os
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import time
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from test_framework.test_framework import BitcoinTestFramework
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from test_framework.util import (
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assert_equal,
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assert_raises_rpc_error,
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)
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def read_dump(file_name, addrs, script_addrs, hd_master_addr_old):
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"""
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Read the given dump, count the addrs that match, count change and reserve.
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Also check that the old hd_master is inactive
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"""
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with open(file_name, encoding='utf8') as inputfile:
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found_comments = []
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found_addr = 0
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found_script_addr = 0
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found_addr_chg = 0
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found_addr_rsv = 0
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hd_master_addr_ret = None
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for line in inputfile:
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line = line.strip()
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if not line:
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continue
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if line[0] == '#':
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found_comments.append(line)
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else:
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# split out some data
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key_date_label, comment = line.split("#")
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key_date_label = key_date_label.split(" ")
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# key = key_date_label[0]
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date = key_date_label[1]
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keytype = key_date_label[2]
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imported_key = date == '1970-01-01T00:00:01Z'
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if imported_key:
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# Imported keys have multiple addresses, no label (keypath) and timestamp
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# Skip them
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continue
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addr_keypath = comment.split(" addr=")[1]
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addr = addr_keypath.split(" ")[0]
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keypath = None
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if keytype == "inactivehdseed=1":
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# ensure the old master is still available
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assert hd_master_addr_old == addr
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elif keytype == "hdseed=1":
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# ensure we have generated a new hd master key
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assert hd_master_addr_old != addr
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hd_master_addr_ret = addr
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elif keytype == "script=1":
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# scripts don't have keypaths
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keypath = None
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else:
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keypath = addr_keypath.rstrip().split("hdkeypath=")[1]
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# count key types
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for addrObj in addrs:
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if addrObj['address'] == addr and addrObj['hdkeypath'] == keypath and keytype == "label=":
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found_addr += 1
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break
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elif keytype == "change=1":
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found_addr_chg += 1
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break
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elif keytype == "reserve=1":
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found_addr_rsv += 1
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break
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# count scripts
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for script_addr in script_addrs:
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if script_addr == addr.rstrip() and keytype == "script=1":
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found_script_addr += 1
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break
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return found_comments, found_addr, found_script_addr, found_addr_chg, found_addr_rsv, hd_master_addr_ret
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class WalletDumpTest(BitcoinTestFramework):
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def set_test_params(self):
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self.num_nodes = 1
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self.extra_args = [["-keypool=90", "-usehd=1"]]
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self.rpc_timeout = 120
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def skip_test_if_missing_module(self):
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self.skip_if_no_wallet()
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def setup_network(self):
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self.disable_mocktime()
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self.add_nodes(self.num_nodes, extra_args=self.extra_args)
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self.start_nodes()
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def run_test(self):
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self.nodes[0].createwallet("dump")
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wallet_unenc_dump = os.path.join(self.nodes[0].datadir, "wallet.unencrypted.dump")
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wallet_enc_dump = os.path.join(self.nodes[0].datadir, "wallet.encrypted.dump")
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# generate 20 addresses to compare against the dump
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test_addr_count = 20
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addrs = []
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for _ in range(test_addr_count):
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addr = self.nodes[0].getnewaddress()
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vaddr= self.nodes[0].getaddressinfo(addr) #required to get hd keypath
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addrs.append(vaddr)
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# Should be a no-op:
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self.nodes[0].keypoolrefill()
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# Test scripts dump by adding a 1-of-1 multisig address
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multisig_addr = self.nodes[0].addmultisigaddress(1, [addrs[1]["address"]])["address"]
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script_addrs = [multisig_addr]
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self.log.info('Mine a block one second before the wallet is dumped')
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dump_time = int(time.time())
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self.nodes[0].setmocktime(dump_time - 1)
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self.nodes[0].generate(1)
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self.nodes[0].setmocktime(dump_time)
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dump_time_str = '# * Created on {}Z'.format(
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datetime.datetime.fromtimestamp(
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dump_time,
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tz=datetime.timezone.utc,
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).replace(tzinfo=None).isoformat())
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dump_best_block_1 = '# * Best block at time of backup was {} ({}),'.format(
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self.nodes[0].getblockcount(),
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self.nodes[0].getbestblockhash(),
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)
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dump_best_block_2 = '# mined on {}Z'.format(
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datetime.datetime.fromtimestamp(
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dump_time - 1,
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tz=datetime.timezone.utc,
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).replace(tzinfo=None).isoformat())
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self.log.info('Dump unencrypted wallet')
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result = self.nodes[0].dumpwallet(wallet_unenc_dump)
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assert_equal(result['filename'], wallet_unenc_dump)
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found_comments, found_addr, found_script_addr, found_addr_chg, found_addr_rsv, hd_master_addr_unenc = \
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read_dump(wallet_unenc_dump, addrs, script_addrs, None)
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assert '# End of dump' in found_comments # Check that file is not corrupt
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assert_equal(dump_time_str, next(c for c in found_comments if c.startswith('# * Created on')))
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assert_equal(dump_best_block_1, next(c for c in found_comments if c.startswith('# * Best block')))
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assert_equal(dump_best_block_2, next(c for c in found_comments if c.startswith('# mined on')))
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assert_equal(found_addr, test_addr_count) # all keys must be in the dump
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# This is 1, not 2 because we aren't testing for witness scripts
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assert_equal(found_script_addr, 1) # all scripts must be in the dump
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assert_equal(found_addr_chg, 0) # 0 blocks where mined
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assert_equal(found_addr_rsv, 180) # keypool size (external+internal)
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#encrypt wallet, restart, unlock and dump
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self.nodes[0].encryptwallet('test')
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self.nodes[0].walletpassphrase('test', 300)
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# Should be a no-op:
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self.nodes[0].keypoolrefill()
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self.nodes[0].dumpwallet(wallet_enc_dump)
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found_comments, found_addr, found_script_addr, found_addr_chg, found_addr_rsv, _ = \
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read_dump(wallet_enc_dump, addrs, script_addrs, hd_master_addr_unenc)
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assert '# End of dump' in found_comments # Check that file is not corrupt
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assert_equal(dump_time_str, next(c for c in found_comments if c.startswith('# * Created on')))
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assert_equal(dump_best_block_1, next(c for c in found_comments if c.startswith('# * Best block')))
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assert_equal(dump_best_block_2, next(c for c in found_comments if c.startswith('# mined on')))
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assert_equal(found_addr, test_addr_count)
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# This is 1, not 2 because we aren't testing for witness scripts
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assert_equal(found_script_addr, 1)
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# TODO clarify if we want the behavior that is tested below in Dash (only when HD seed was generated and not user-provided)
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# assert_equal(found_addr_chg, 180 + 50) # old reserve keys are marked as change now
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assert_equal(found_addr_rsv, 180) # keypool size
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# Overwriting should fail
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assert_raises_rpc_error(-8, "already exists", lambda: self.nodes[0].dumpwallet(wallet_enc_dump))
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# Restart node with new wallet, and test importwallet
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self.restart_node(0)
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self.nodes[0].createwallet("w2")
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# Make sure the address is not IsMine before import
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result = self.nodes[0].getaddressinfo(multisig_addr)
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assert result['ismine'] == False
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self.nodes[0].importwallet(wallet_unenc_dump)
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# Now check IsMine is true
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result = self.nodes[0].getaddressinfo(multisig_addr)
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assert result['ismine'] == True
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if self.is_bdb_compiled():
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self.log.info('Check that wallet is flushed')
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with self.nodes[0].assert_debug_log(['Flushing wallet.dat'], timeout=20):
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self.nodes[0].getnewaddress()
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# Make sure that dumpwallet doesn't have a lock order issue when there is an unconfirmed tx and it is reloaded
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# See https://github.com/bitcoin/bitcoin/issues/22489
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self.nodes[0].createwallet("w3")
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w3 = self.nodes[0].get_wallet_rpc("w3")
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w3.importprivkey(privkey=self.nodes[0].get_deterministic_priv_key().key, label="coinbase_import")
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w3.sendtoaddress(w3.getnewaddress(), 10)
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w3.unloadwallet()
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self.nodes[0].loadwallet("w3")
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w3.dumpwallet(os.path.join(self.nodes[0].datadir, "w3.dump"))
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if __name__ == '__main__':
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WalletDumpTest().main()
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