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#!/usr/bin/env python3
# Copyright (c) 2017-2021 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Test various command line arguments and configuration file parameters."""
import json
from test_framework.test_framework import BitcoinTestFramework
from test_framework.test_node import ErrorMatch
from test_framework.util import assert_equal
class SettingsTest(BitcoinTestFramework):
def set_test_params(self):
self.setup_clean_chain = True
self.num_nodes = 1
self.wallet_names = []
def run_test(self):
node, = self.nodes
settings = node.chain_path / "settings.json"
conf = node.datadir_path / "bitcoin.conf"
# Assert default settings file was created
self.stop_node(0)
default_settings = {"_warning_": f"This file is automatically generated and updated by {self.config['environment']['PACKAGE_NAME']}. Please do not edit this file while the node is running, as any changes might be ignored or overwritten."}
with settings.open() as fp:
assert_equal(json.load(fp), default_settings)
# Assert settings are parsed and logged
with settings.open("w") as fp:
json.dump({"string": "string", "num": 5, "bool": True, "null": None, "list": [6, 7]}, fp)
with node.assert_debug_log(expected_msgs=[
'Ignoring unknown rw_settings value bool',
'Ignoring unknown rw_settings value list',
'Ignoring unknown rw_settings value null',
'Ignoring unknown rw_settings value num',
'Ignoring unknown rw_settings value string',
'Setting file arg: string = "string"',
'Setting file arg: num = 5',
'Setting file arg: bool = true',
'Setting file arg: null = null',
'Setting file arg: list = [6,7]',
]):
self.start_node(0)
self.stop_node(0)
# Assert settings are unchanged after shutdown
with settings.open() as fp:
assert_equal(json.load(fp), {**default_settings, **{"string": "string", "num": 5, "bool": True, "null": None, "list": [6, 7]}})
# Test invalid json
with settings.open("w") as fp:
fp.write("invalid json")
node.assert_start_raises_init_error(expected_msg='does not contain valid JSON. This is probably caused by disk corruption or a crash', match=ErrorMatch.PARTIAL_REGEX)
# Test invalid json object
with settings.open("w") as fp:
fp.write('"string"')
node.assert_start_raises_init_error(expected_msg='Found non-object value "string" in settings file', match=ErrorMatch.PARTIAL_REGEX)
# Test invalid settings file containing duplicate keys
with settings.open("w") as fp:
fp.write('{"key": 1, "key": 2}')
node.assert_start_raises_init_error(expected_msg='Found duplicate key key in settings file', match=ErrorMatch.PARTIAL_REGEX)
# Test invalid settings file is ignored with command line -nosettings
with node.assert_debug_log(expected_msgs=['Command-line arg: settings=false']):
self.start_node(0, extra_args=["-nosettings"])
self.stop_node(0)
# Test invalid settings file is ignored with config file -nosettings
with conf.open('a') as conf:
conf.write('nosettings=1\n')
with node.assert_debug_log(expected_msgs=['Config file arg: [regtest] settings=false']):
self.start_node(0)
self.stop_node(0)
# Test alternate settings path
altsettings = node.datadir_path / "altsettings.json"
with altsettings.open("w") as fp:
fp.write('{"key": "value"}')
with node.assert_debug_log(expected_msgs=['Setting file arg: key = "value"']):
self.start_node(0, extra_args=[f"-settings={altsettings}"])
self.stop_node(0)
if __name__ == '__main__':
SettingsTest(__file__).main()
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