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#!/usr/bin/env python3
# Copyright 2014 BitPay Inc.
# Copyright 2016-2017 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 framework for bitcoin utils.
Runs automatically during `make check`.
Can also be run manually."""
import argparse
import configparser
import difflib
import json
import logging
import os
import pprint
import subprocess
import sys
def main():
config = configparser.ConfigParser()
config.optionxform = str
with open(os.path.join(os.path.dirname(__file__), "../config.ini"), encoding="utf8") as f:
config.read_file(f)
env_conf = dict(config.items('environment'))
parser = argparse.ArgumentParser(description=__doc__)
parser.add_argument('-v', '--verbose', action='store_true')
args = parser.parse_args()
verbose = args.verbose
if verbose:
level = logging.DEBUG
else:
level = logging.ERROR
formatter = '%(asctime)s - %(levelname)s - %(message)s'
# Add the format/level to the logger
logging.basicConfig(format=formatter, level=level)
bctester(os.path.join(env_conf["SRCDIR"], "test", "util", "data"), "bitcoin-util-test.json", env_conf)
def bctester(testDir, input_basename, buildenv):
""" Loads and parses the input file, runs all tests and reports results"""
input_filename = os.path.join(testDir, input_basename)
with open(input_filename, encoding="utf8") as f:
raw_data = f.read()
input_data = json.loads(raw_data)
failed_testcases = []
for testObj in input_data:
try:
bctest(testDir, testObj, buildenv)
logging.info("PASSED: " + testObj["description"])
except:
logging.info("FAILED: " + testObj["description"])
failed_testcases.append(testObj["description"])
if failed_testcases:
error_message = "FAILED_TESTCASES:\n"
error_message += pprint.pformat(failed_testcases, width=400)
logging.error(error_message)
sys.exit(1)
else:
sys.exit(0)
def bctest(testDir, testObj, buildenv):
"""Runs a single test, comparing output and RC to expected output and RC.
Raises an error if input can't be read, executable fails, or output/RC
are not as expected. Error is caught by bctester() and reported.
"""
# Get the exec names and arguments
execprog = os.path.join(buildenv["BUILDDIR"], "src", testObj["exec"] + buildenv["EXEEXT"])
execargs = testObj['args']
execrun = [execprog] + execargs
# Read the input data (if there is any)
stdinCfg = None
inputData = None
if "input" in testObj:
filename = os.path.join(testDir, testObj["input"])
with open(filename, encoding="utf8") as f:
inputData = f.read()
stdinCfg = subprocess.PIPE
# Read the expected output data (if there is any)
outputFn = None
outputData = None
outputType = None
if "output_cmp" in testObj:
outputFn = testObj['output_cmp']
outputType = os.path.splitext(outputFn)[1][1:] # output type from file extension (determines how to compare)
try:
with open(os.path.join(testDir, outputFn), encoding="utf8") as f:
outputData = f.read()
except:
logging.error("Output file " + outputFn + " cannot be opened")
raise
if not outputData:
logging.error("Output data missing for " + outputFn)
raise Exception
if not outputType:
logging.error("Output file %s does not have a file extension" % outputFn)
raise Exception
# Run the test
proc = subprocess.Popen(execrun, stdin=stdinCfg, stdout=subprocess.PIPE, stderr=subprocess.PIPE, universal_newlines=True)
try:
outs = proc.communicate(input=inputData)
except OSError:
logging.error("OSError, Failed to execute " + execprog)
raise
if outputData:
data_mismatch, formatting_mismatch = False, False
# Parse command output and expected output
try:
a_parsed = parse_output(outs[0], outputType)
except Exception as e:
logging.error('Error parsing command output as %s: %s' % (outputType, e))
raise
try:
b_parsed = parse_output(outputData, outputType)
except Exception as e:
logging.error('Error parsing expected output %s as %s: %s' % (outputFn, outputType, e))
raise
# Compare data
if a_parsed != b_parsed:
logging.error("Output data mismatch for " + outputFn + " (format " + outputType + ")")
data_mismatch = True
# Compare formatting
if outs[0] != outputData:
error_message = "Output formatting mismatch for " + outputFn + ":\n"
error_message += "".join(difflib.context_diff(outputData.splitlines(True),
outs[0].splitlines(True),
fromfile=outputFn,
tofile="returned"))
logging.error(error_message)
formatting_mismatch = True
assert not data_mismatch and not formatting_mismatch
# Compare the return code to the expected return code
wantRC = 0
if "return_code" in testObj:
wantRC = testObj['return_code']
if proc.returncode != wantRC:
logging.error("Return code mismatch for " + outputFn)
raise Exception
if "error_txt" in testObj:
want_error = testObj["error_txt"]
# Compare error text
# TODO: ideally, we'd compare the strings exactly and also assert
# That stderr is empty if no errors are expected. However, bitcoin-tx
# emits DISPLAY errors when running as a windows application on
# linux through wine. Just assert that the expected error text appears
# somewhere in stderr.
if want_error not in outs[1]:
logging.error("Error mismatch:\n" + "Expected: " + want_error + "\nReceived: " + outs[1].rstrip())
raise Exception
def parse_output(a, fmt):
"""Parse the output according to specified format.
Raise an error if the output can't be parsed."""
if fmt == 'json': # json: compare parsed data
return json.loads(a)
elif fmt == 'hex': # hex: parse and compare binary data
return bytes.fromhex(a.strip())
else:
raise NotImplementedError("Don't know how to compare %s" % fmt)
if __name__ == '__main__':
main()
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