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path: root/test/functional/conf_args.py
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#!/usr/bin/env python3
# Copyright (c) 2017 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 os

from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import get_datadir_path

class ConfArgsTest(BitcoinTestFramework):
    def set_test_params(self):
        self.setup_clean_chain = True
        self.num_nodes = 1

    def run_test(self):
        self.stop_node(0)
        # Remove the -datadir argument so it doesn't override the config file
        self.nodes[0].args = [arg for arg in self.nodes[0].args if not arg.startswith("-datadir")]

        default_data_dir = get_datadir_path(self.options.tmpdir, 0)
        new_data_dir = os.path.join(default_data_dir, 'newdatadir')
        new_data_dir_2 = os.path.join(default_data_dir, 'newdatadir2')

        # Check that using -datadir argument on non-existent directory fails
        self.nodes[0].datadir = new_data_dir
        self.assert_start_raises_init_error(0, ['-datadir='+new_data_dir], 'Error: Specified data directory "' + new_data_dir + '" does not exist.')

        # Check that using non-existent datadir in conf file fails
        conf_file = os.path.join(default_data_dir, "bitcoin.conf")
        with open(conf_file, 'a', encoding='utf8') as f:
            f.write("datadir=" + new_data_dir + "\n")
        self.assert_start_raises_init_error(0, ['-conf='+conf_file], 'Error reading configuration file: specified data directory "' + new_data_dir + '" does not exist.')

        # Create the directory and ensure the config file now works
        os.mkdir(new_data_dir)
        self.start_node(0, ['-conf='+conf_file, '-wallet=w1'])
        self.stop_node(0)
        assert os.path.isfile(os.path.join(new_data_dir, 'regtest', 'wallets', 'w1'))

        # Ensure command line argument overrides datadir in conf
        os.mkdir(new_data_dir_2)
        self.nodes[0].datadir = new_data_dir_2
        self.start_node(0, ['-datadir='+new_data_dir_2, '-conf='+conf_file, '-wallet=w2'])
        assert os.path.isfile(os.path.join(new_data_dir_2, 'regtest', 'wallets', 'w2'))

if __name__ == '__main__':
    ConfArgsTest().main()