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#!/usr/bin/env python3
# Copyright (c) 2018 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
"""Verify that starting bitcoin with -h works as expected."""
import subprocess
from test_framework.test_framework import BitcoinTestFramework
from test_framework.util import assert_equal
class HelpTest(BitcoinTestFramework):
def set_test_params(self):
self.setup_clean_chain = True
self.num_nodes = 1
def setup_network(self):
self.add_nodes(self.num_nodes)
# Don't start the node
def run_test(self):
self.log.info("Start bitcoin with -h for help text")
self.nodes[0].start(extra_args=['-h'], stderr=subprocess.PIPE, stdout=subprocess.PIPE)
# Node should exit immediately and output help to stdout.
ret_code = self.nodes[0].process.wait(timeout=1)
assert_equal(ret_code, 0)
output = self.nodes[0].process.stdout.read()
assert b'Options' in output
self.log.info("Help text received: {} (...)".format(output[0:60]))
self.nodes[0].running = False
self.log.info("Start bitcoin with -version for version information")
self.nodes[0].start(extra_args=['-version'], stderr=subprocess.PIPE, stdout=subprocess.PIPE)
# Node should exit immediately and output version to stdout.
ret_code = self.nodes[0].process.wait(timeout=1)
assert_equal(ret_code, 0)
output = self.nodes[0].process.stdout.read()
assert b'version' in output
self.log.info("Version text received: {} (...)".format(output[0:60]))
# Test that arguments not in the help results in an error
self.log.info("Start bitcoind with -fakearg to make sure it does not start")
self.nodes[0].start(extra_args=['-fakearg'], stderr=subprocess.PIPE, stdout=subprocess.PIPE)
# Node should exit immediately and output an error to stderr
ret_code = self.nodes[0].process.wait(timeout=1)
assert_equal(ret_code, 1)
output = self.nodes[0].process.stderr.read()
assert b'Error parsing command line arguments' in output
self.log.info("Error message received: {} (...)".format(output[0:60]))
# Clean up TestNode state
self.nodes[0].running = False
self.nodes[0].process = None
self.nodes[0].rpc_connected = False
self.nodes[0].rpc = None
if __name__ == '__main__':
HelpTest().main()
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