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# Copyright 2014 BitPay, Inc.
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
from __future__ import division,print_function,unicode_literals
import subprocess
import os
import json
import sys
import binascii
import difflib
import logging
def parse_output(a, fmt):
if fmt == 'json': # json: compare parsed data
return json.loads(a)
elif fmt == 'hex': # hex: parse and compare binary data
return binascii.a2b_hex(a.strip())
else:
raise NotImplementedError("Don't know how to compare %s" % fmt)
def bctest(testDir, testObj, exeext):
execprog = testObj['exec'] + exeext
execargs = testObj['args']
execrun = [execprog] + execargs
stdinCfg = None
inputData = None
if "input" in testObj:
filename = testDir + "/" + testObj['input']
inputData = open(filename).read()
stdinCfg = subprocess.PIPE
outputFn = None
outputData = 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:
outputData = open(testDir + "/" + outputFn).read()
except:
logging.error("Output file " + outputFn + " can not be opened")
raise
if not outputData:
logging.error("Output data missing for " + outputFn)
raise Exception
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:
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
if a_parsed != b_parsed:
logging.error("Output data mismatch for " + outputFn + " (format " + outputType + ")")
raise Exception
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)
raise Exception
wantRC = 0
if "return_code" in testObj:
wantRC = testObj['return_code']
if proc.returncode != wantRC:
logging.error("Return code mismatch for " + outputFn)
raise Exception
def bctester(testDir, input_basename, buildenv):
input_filename = testDir + "/" + input_basename
raw_data = open(input_filename).read()
input_data = json.loads(raw_data)
failed_testcases = []
for testObj in input_data:
try:
bctest(testDir, testObj, buildenv.exeext)
logging.info("PASSED: " + testObj["description"])
except:
logging.info("FAILED: " + testObj["description"])
failed_testcases.append(testObj["description"])
if failed_testcases:
logging.error("FAILED TESTCASES: [" + ", ".join(failed_testcases) + "]")
sys.exit(1)
else:
sys.exit(0)
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