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v31.1-roots.1 · Commit 2: [PATCH 02/17] feat(policy): preserve Roots parsing and local transaction checks

test/functional/feature_policy_args.py

Before: /dev/null · After: test/functional/feature_policy_args.py

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test/functional/feature_policy_args.py ADDED
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+ #!/usr/bin/env python3
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+ # Copyright (c) 2026 The Bitcoin Roots 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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+ """Check Roots policy grammar at startup and preserve configuration precedence."""
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+
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+ import json
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+ import re
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+
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+ from test_framework.test_framework import BitcoinTestFramework
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+ from test_framework.test_node import ErrorMatch
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+ from test_framework.util import assert_equal
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+
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+
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+ class PolicyArgsTest(BitcoinTestFramework):
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+ def set_test_params(self):
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+ self.setup_clean_chain = True
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+ self.num_nodes = 1
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+ self.uses_wallet = None
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+ self.wallet_names = []
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+
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+ def setup_network(self):
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+ self.add_nodes(self.num_nodes)
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+
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+ def run_test(self):
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+ node = self.nodes[0]
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+ config_path = node.datadir_path / "bitcoin.conf"
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+ base_config = config_path.read_text(encoding="utf-8")
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+ passed_startups = 0
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+ rejected_startups = 0
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+
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+ def check_start(cli=None, config="", *, default_config=""):
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+ nonlocal passed_startups
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+ config_path.write_text(default_config + base_config + config, encoding="utf-8")
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+ self.start_node(0, extra_args=cli or [])
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+ assert_equal(node.getblockchaininfo()["chain"], "regtest")
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+ # Staged controls must visibly warn; verify the complete diagnostic.
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+ staged = ["datacarriercost", "subdustfeepenalty", "mempoolreplacement", "mempoolfullrbf", "mempooltruc", "spkreuse", "dustdynamic", "blockmaxsize", "blockprioritysize"]
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+ supplied = set()
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+ for arg in cli or []:
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+ name = arg.split("=", 1)[0].lstrip("-")
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+ supplied.add(name[2:] if name.startswith("no") else name)
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+ for line in (default_config + config).splitlines():
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+ name = line.split("=", 1)[0].strip()
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+ supplied.add(name[2:] if name.startswith("no") else name)
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+ settings_path = node.chain_path / "settings.json"
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+ if settings_path.exists():
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+ supplied.update(json.loads(settings_path.read_text(encoding="utf-8")))
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+ expected = "\n".join(
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+ f"Warning: -{name} is parsed but not enforced in this staged candidate; graph policy and mining implementations are pending."
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+ for name in staged if name in supplied
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+ )
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+ self.stop_node(0, expected_stderr=expected)
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+ passed_startups += 1
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+
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+ def check_error(option, value, *, config=False, negated=False, cli=None):
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+ nonlocal rejected_startups
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+ key = ("no" if negated else "") + option
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+ config_path.write_text(base_config + (f"{key}={value}\n" if config else ""), encoding="utf-8")
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+ args = ([] if config else [f"-{key}={value}"]) + (cli or [])
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+ node.assert_start_raises_init_error(
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+ extra_args=args,
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+ expected_msg=re.escape(f"Invalid -{key} value: '{value}'"),
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+ match=ErrorMatch.PARTIAL_REGEX,
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+ )
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+ rejected_startups += 1
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+
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+ self.log.info("Default policy configuration starts unchanged")
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+ check_start()
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+
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+ self.log.info("Malformed effective values fail equally on CLI and in config")
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+ invalid = {
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+ "subdustfeepenalty": "1junk",
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+ "rejectparasites": "2",
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+ "acceptunknownwitness": "+1",
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+ "datacarrierfullcount": "01",
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+ "permitbareanchor": "false",
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+ "rejecttokens": "-1",
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+ "permitbarepubkey": "0.5",
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+ "permitbaredatacarrier": "junk",
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+ "acceptnonstddatacarrier": "1.0",
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+ "maxscriptsize": "12junk",
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+ "bytespersigopstrict": "4294967296",
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+ "maxtxlegacysigops": "-1",
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+ "minrelaycoinblocks": "9223372036854775808",
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+ "minrelaymaturity": "2147483648",
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+ "blockmaxsize": "4000001",
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+ "blockprioritysize": "1.5",
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+ "datacarriercost": "1073741823.76",
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+ "mempoolreplacement": "fee,junk",
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+ "mempooltruc": "accept,,enforce",
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+ "permitephemeral": "anchor,",
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+ "spkreuse": "garbage",
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+ }
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+ for option, value in invalid.items():
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+ check_error(option, value)
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+ check_error(option, value, config=True)
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+
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+ self.log.info("Negation is checked before coercion, even when shadowed")
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+ for option in [*invalid, "dustdynamic"]:
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+ check_error(option, "junk", negated=True, cli=[f"-{option}=0"])
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+ check_error(option, "junk", config=True, negated=True, cli=[f"-{option}=0"])
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+
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+ self.log.info("Empty integer values and CLI whitespace cannot partially parse")
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+ check_error("maxscriptsize", "")
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+ check_error("maxscriptsize", "", config=True)
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+ check_error("subdustfeepenalty", " 1")
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+ check_error("datacarriercost", "1 ")
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+ config_path.write_text(base_config, encoding="utf-8")
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+ node.assert_start_raises_init_error(
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+ extra_args=["-maxscriptsize"],
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+ expected_msg="Invalid -maxscriptsize value: ''",
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+ match=ErrorMatch.PARTIAL_REGEX,
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+ )
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+ rejected_startups += 1
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+
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+ self.log.info("Valid boundaries, aliases, exponent precision and whitespace formatting remain supported")
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+ valid = {
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+ "subdustfeepenalty": "", "rejectparasites": "0", "acceptunknownwitness": "1",
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+ "datacarrierfullcount": "1", "permitbareanchor": "1", "rejecttokens": "0",
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+ "permitbarepubkey": "0", "permitbaredatacarrier": "0", "acceptnonstddatacarrier": "0",
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+ "maxscriptsize": "+1650", "bytespersigopstrict": "020", "maxtxlegacysigops": "4294967295",
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+ "minrelaycoinblocks": "9223372036854775807", "minrelaymaturity": "2147483647",
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+ "blockmaxsize": "4000000", "blockprioritysize": "9223372036854775807",
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+ "datacarriercost": "1.2300", "dustdynamic": "off", "mempoolreplacement": "fee+-optin",
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+ "mempooltruc": "accept,enforce", "permitephemeral": "0,anchor", "spkreuse": "conflict",
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+ }
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+ check_start([f"-{option}={value}" for option, value in valid.items()])
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+ check_start(config="".join(f"{option} = {value} \n" for option, value in valid.items()))
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+ for cost in ["-0", "0.01", "0.25", "0.26", "1e0", "1e-2", "1073741823.75"]:
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+ check_start([f"-datacarriercost={cost}"])
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+ check_start(["-subdustfeepenalty", "-mempoolreplacement", "-mempooltruc", "-permitephemeral", "-spkreuse"])
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+ check_start(["-nosubdustfeepenalty", "-nomaxscriptsize=0", "-nodatacarriercost", "-nomempoolreplacement", "-nomempooltruc", "-nopermitephemeral", "-nospkreuse"])
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+ check_start(["-nosubdustfeepenalty=0", "-maxscriptsize=-0"])
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+
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+ self.log.info("Last CLI, first config, network section and CLI-over-config selection remain unchanged")
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+ check_start(["-subdustfeepenalty=junk", "-subdustfeepenalty=1"], config="subdustfeepenalty=junk\n")
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+ check_start(config="subdustfeepenalty=1\nsubdustfeepenalty=junk\n")
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+ check_start(default_config="subdustfeepenalty=junk\n", config="subdustfeepenalty=1\n")
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+ config_path.write_text(base_config, encoding="utf-8")
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+ node.assert_start_raises_init_error(extra_args=["-subdustfeepenalty=1", "-subdustfeepenalty=junk"], expected_msg="Invalid -subdustfeepenalty value: 'junk'", match=ErrorMatch.PARTIAL_REGEX)
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+ rejected_startups += 1
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+ config_path.write_text(base_config + "subdustfeepenalty=junk\nsubdustfeepenalty=1\n", encoding="utf-8")
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+ node.assert_start_raises_init_error(extra_args=[], expected_msg="Invalid -subdustfeepenalty value: 'junk'", match=ErrorMatch.PARTIAL_REGEX)
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+ rejected_startups += 1
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+
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+ self.log.info("Inherited Core numeric and Boolean parsers retain permissive input")
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+ check_start(["-bytespersigop=20junk", "-datacarriersize=83junk", "-datacarrier=1junk", "-permitbaremultisig=2", "-mempoolfullrbf=1junk"])
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+ check_start(config="bytespersigop=20junk\ndatacarriersize=83junk\ndatacarrier=1junk\npermitbaremultisig=2\nmempoolfullrbf=1junk\n")
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+
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+ # Only malformed dynamic modes are startup-tested. Valid non-off grammar
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+ # is unit-tested without constructing a mempool: production scheduler
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+ # wiring is an existing separate runtime gap, not a successful startup.
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+ config_path.write_text(base_config, encoding="utf-8")
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+ node.assert_start_raises_init_error(extra_args=["-dustdynamic=target:2junk"], expected_msg="Invalid mode for dustdynamic: failed to parse target block count", match=ErrorMatch.PARTIAL_REGEX)
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+ rejected_startups += 1
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+
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+ self.log.info("JSON settings use the same effective grammar; confrw integration belongs L12")
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+ settings_path = node.chain_path / "settings.json"
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+ for value in [True, False]:
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+ settings_path.write_text(json.dumps({"subdustfeepenalty": value}), encoding="utf-8")
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+ check_start(config="subdustfeepenalty=junk\n")
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+ settings_path.write_text(json.dumps({"subdustfeepenalty": 2}), encoding="utf-8")
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+ config_path.write_text(base_config, encoding="utf-8")
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+ node.assert_start_raises_init_error(extra_args=[], expected_msg="Invalid -subdustfeepenalty value: '2'", match=ErrorMatch.PARTIAL_REGEX)
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+ rejected_startups += 1
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+ for value in [[], {}]:
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+ settings_path.write_text(json.dumps({"subdustfeepenalty": value}), encoding="utf-8")
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+ node.assert_start_raises_init_error(extra_args=[], expected_msg="Invalid -subdustfeepenalty value: expected a scalar policy value", match=ErrorMatch.PARTIAL_REGEX)
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+ rejected_startups += 1
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+ check_start(["-subdustfeepenalty=1"])
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+ settings_path.write_text("{}", encoding="utf-8")
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+ config_path.write_text(base_config, encoding="utf-8")
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+ self.log.info("Policy startup cases: %d passed starts, %d expected diagnostic rejections", passed_startups, rejected_startups)
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+
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+
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+ if __name__ == '__main__':
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+ PolicyArgsTest(__file__).main()