![Lucas Bates](/assets/img/avatar_default.png)
When using the -i feature to generate random ID numbers for test cases in tdc, the function that writes the JSON to file doesn't add a newline character to the end of the file, so we have to add our own. Signed-off-by: Lucas Bates <lucasb@mojatatu.com> Signed-off-by: David S. Miller <davem@davemloft.net>
656 lines
20 KiB
Python
Executable file
656 lines
20 KiB
Python
Executable file
#!/usr/bin/env python3
|
|
# SPDX-License-Identifier: GPL-2.0
|
|
|
|
"""
|
|
tdc.py - Linux tc (Traffic Control) unit test driver
|
|
|
|
Copyright (C) 2017 Lucas Bates <lucasb@mojatatu.com>
|
|
"""
|
|
|
|
import re
|
|
import os
|
|
import sys
|
|
import argparse
|
|
import importlib
|
|
import json
|
|
import subprocess
|
|
import time
|
|
import traceback
|
|
from collections import OrderedDict
|
|
from string import Template
|
|
|
|
from tdc_config import *
|
|
from tdc_helper import *
|
|
|
|
import TdcPlugin
|
|
|
|
|
|
class PluginMgrTestFail(Exception):
|
|
def __init__(self, stage, output, message):
|
|
self.stage = stage
|
|
self.output = output
|
|
self.message = message
|
|
|
|
class PluginMgr:
|
|
def __init__(self, argparser):
|
|
super().__init__()
|
|
self.plugins = {}
|
|
self.plugin_instances = []
|
|
self.args = []
|
|
self.argparser = argparser
|
|
|
|
# TODO, put plugins in order
|
|
plugindir = os.getenv('TDC_PLUGIN_DIR', './plugins')
|
|
for dirpath, dirnames, filenames in os.walk(plugindir):
|
|
for fn in filenames:
|
|
if (fn.endswith('.py') and
|
|
not fn == '__init__.py' and
|
|
not fn.startswith('#') and
|
|
not fn.startswith('.#')):
|
|
mn = fn[0:-3]
|
|
foo = importlib.import_module('plugins.' + mn)
|
|
self.plugins[mn] = foo
|
|
self.plugin_instances.append(foo.SubPlugin())
|
|
|
|
def call_pre_suite(self, testcount, testidlist):
|
|
for pgn_inst in self.plugin_instances:
|
|
pgn_inst.pre_suite(testcount, testidlist)
|
|
|
|
def call_post_suite(self, index):
|
|
for pgn_inst in reversed(self.plugin_instances):
|
|
pgn_inst.post_suite(index)
|
|
|
|
def call_pre_case(self, test_ordinal, testid):
|
|
for pgn_inst in self.plugin_instances:
|
|
try:
|
|
pgn_inst.pre_case(test_ordinal, testid)
|
|
except Exception as ee:
|
|
print('exception {} in call to pre_case for {} plugin'.
|
|
format(ee, pgn_inst.__class__))
|
|
print('test_ordinal is {}'.format(test_ordinal))
|
|
print('testid is {}'.format(testid))
|
|
raise
|
|
|
|
def call_post_case(self):
|
|
for pgn_inst in reversed(self.plugin_instances):
|
|
pgn_inst.post_case()
|
|
|
|
def call_pre_execute(self):
|
|
for pgn_inst in self.plugin_instances:
|
|
pgn_inst.pre_execute()
|
|
|
|
def call_post_execute(self):
|
|
for pgn_inst in reversed(self.plugin_instances):
|
|
pgn_inst.post_execute()
|
|
|
|
def call_add_args(self, parser):
|
|
for pgn_inst in self.plugin_instances:
|
|
parser = pgn_inst.add_args(parser)
|
|
return parser
|
|
|
|
def call_check_args(self, args, remaining):
|
|
for pgn_inst in self.plugin_instances:
|
|
pgn_inst.check_args(args, remaining)
|
|
|
|
def call_adjust_command(self, stage, command):
|
|
for pgn_inst in self.plugin_instances:
|
|
command = pgn_inst.adjust_command(stage, command)
|
|
return command
|
|
|
|
@staticmethod
|
|
def _make_argparser(args):
|
|
self.argparser = argparse.ArgumentParser(
|
|
description='Linux TC unit tests')
|
|
|
|
|
|
def replace_keywords(cmd):
|
|
"""
|
|
For a given executable command, substitute any known
|
|
variables contained within NAMES with the correct values
|
|
"""
|
|
tcmd = Template(cmd)
|
|
subcmd = tcmd.safe_substitute(NAMES)
|
|
return subcmd
|
|
|
|
|
|
def exec_cmd(args, pm, stage, command):
|
|
"""
|
|
Perform any required modifications on an executable command, then run
|
|
it in a subprocess and return the results.
|
|
"""
|
|
if len(command.strip()) == 0:
|
|
return None, None
|
|
if '$' in command:
|
|
command = replace_keywords(command)
|
|
|
|
command = pm.call_adjust_command(stage, command)
|
|
if args.verbose > 0:
|
|
print('command "{}"'.format(command))
|
|
proc = subprocess.Popen(command,
|
|
shell=True,
|
|
stdout=subprocess.PIPE,
|
|
stderr=subprocess.PIPE,
|
|
env=ENVIR)
|
|
(rawout, serr) = proc.communicate()
|
|
|
|
if proc.returncode != 0 and len(serr) > 0:
|
|
foutput = serr.decode("utf-8")
|
|
else:
|
|
foutput = rawout.decode("utf-8")
|
|
|
|
proc.stdout.close()
|
|
proc.stderr.close()
|
|
return proc, foutput
|
|
|
|
|
|
def prepare_env(args, pm, stage, prefix, cmdlist, output = None):
|
|
"""
|
|
Execute the setup/teardown commands for a test case.
|
|
Optionally terminate test execution if the command fails.
|
|
"""
|
|
if args.verbose > 0:
|
|
print('{}'.format(prefix))
|
|
for cmdinfo in cmdlist:
|
|
if isinstance(cmdinfo, list):
|
|
exit_codes = cmdinfo[1:]
|
|
cmd = cmdinfo[0]
|
|
else:
|
|
exit_codes = [0]
|
|
cmd = cmdinfo
|
|
|
|
if not cmd:
|
|
continue
|
|
|
|
(proc, foutput) = exec_cmd(args, pm, stage, cmd)
|
|
|
|
if proc and (proc.returncode not in exit_codes):
|
|
print('', file=sys.stderr)
|
|
print("{} *** Could not execute: \"{}\"".format(prefix, cmd),
|
|
file=sys.stderr)
|
|
print("\n{} *** Error message: \"{}\"".format(prefix, foutput),
|
|
file=sys.stderr)
|
|
print("\n{} *** Aborting test run.".format(prefix), file=sys.stderr)
|
|
print("\n\n{} *** stdout ***".format(proc.stdout), file=sys.stderr)
|
|
print("\n\n{} *** stderr ***".format(proc.stderr), file=sys.stderr)
|
|
raise PluginMgrTestFail(
|
|
stage, output,
|
|
'"{}" did not complete successfully'.format(prefix))
|
|
|
|
def run_one_test(pm, args, index, tidx):
|
|
global NAMES
|
|
result = True
|
|
tresult = ""
|
|
tap = ""
|
|
if args.verbose > 0:
|
|
print("\t====================\n=====> ", end="")
|
|
print("Test " + tidx["id"] + ": " + tidx["name"])
|
|
|
|
# populate NAMES with TESTID for this test
|
|
NAMES['TESTID'] = tidx['id']
|
|
|
|
pm.call_pre_case(index, tidx['id'])
|
|
prepare_env(args, pm, 'setup', "-----> prepare stage", tidx["setup"])
|
|
|
|
if (args.verbose > 0):
|
|
print('-----> execute stage')
|
|
pm.call_pre_execute()
|
|
(p, procout) = exec_cmd(args, pm, 'execute', tidx["cmdUnderTest"])
|
|
exit_code = p.returncode
|
|
pm.call_post_execute()
|
|
|
|
if (exit_code != int(tidx["expExitCode"])):
|
|
result = False
|
|
print("exit:", exit_code, int(tidx["expExitCode"]))
|
|
print(procout)
|
|
else:
|
|
if args.verbose > 0:
|
|
print('-----> verify stage')
|
|
match_pattern = re.compile(
|
|
str(tidx["matchPattern"]), re.DOTALL | re.MULTILINE)
|
|
(p, procout) = exec_cmd(args, pm, 'verify', tidx["verifyCmd"])
|
|
if procout:
|
|
match_index = re.findall(match_pattern, procout)
|
|
if len(match_index) != int(tidx["matchCount"]):
|
|
result = False
|
|
elif int(tidx["matchCount"]) != 0:
|
|
result = False
|
|
|
|
if not result:
|
|
tresult += 'not '
|
|
tresult += 'ok {} - {} # {}\n'.format(str(index), tidx['id'], tidx['name'])
|
|
tap += tresult
|
|
|
|
if result == False:
|
|
if procout:
|
|
tap += procout
|
|
else:
|
|
tap += 'No output!\n'
|
|
|
|
prepare_env(args, pm, 'teardown', '-----> teardown stage', tidx['teardown'], procout)
|
|
pm.call_post_case()
|
|
|
|
index += 1
|
|
|
|
# remove TESTID from NAMES
|
|
del(NAMES['TESTID'])
|
|
return tap
|
|
|
|
def test_runner(pm, args, filtered_tests):
|
|
"""
|
|
Driver function for the unit tests.
|
|
|
|
Prints information about the tests being run, executes the setup and
|
|
teardown commands and the command under test itself. Also determines
|
|
success/failure based on the information in the test case and generates
|
|
TAP output accordingly.
|
|
"""
|
|
testlist = filtered_tests
|
|
tcount = len(testlist)
|
|
index = 1
|
|
tap = ''
|
|
badtest = None
|
|
stage = None
|
|
emergency_exit = False
|
|
emergency_exit_message = ''
|
|
|
|
if args.notap:
|
|
if args.verbose:
|
|
tap = 'notap requested: omitting test plan\n'
|
|
else:
|
|
tap = str(index) + ".." + str(tcount) + "\n"
|
|
try:
|
|
pm.call_pre_suite(tcount, [tidx['id'] for tidx in testlist])
|
|
except Exception as ee:
|
|
ex_type, ex, ex_tb = sys.exc_info()
|
|
print('Exception {} {} (caught in pre_suite).'.
|
|
format(ex_type, ex))
|
|
# when the extra print statements are uncommented,
|
|
# the traceback does not appear between them
|
|
# (it appears way earlier in the tdc.py output)
|
|
# so don't bother ...
|
|
# print('--------------------(')
|
|
# print('traceback')
|
|
traceback.print_tb(ex_tb)
|
|
# print('--------------------)')
|
|
emergency_exit_message = 'EMERGENCY EXIT, call_pre_suite failed with exception {} {}\n'.format(ex_type, ex)
|
|
emergency_exit = True
|
|
stage = 'pre-SUITE'
|
|
|
|
if emergency_exit:
|
|
pm.call_post_suite(index)
|
|
return emergency_exit_message
|
|
if args.verbose > 1:
|
|
print('give test rig 2 seconds to stabilize')
|
|
time.sleep(2)
|
|
for tidx in testlist:
|
|
if "flower" in tidx["category"] and args.device == None:
|
|
if args.verbose > 1:
|
|
print('Not executing test {} {} because DEV2 not defined'.
|
|
format(tidx['id'], tidx['name']))
|
|
continue
|
|
try:
|
|
badtest = tidx # in case it goes bad
|
|
tap += run_one_test(pm, args, index, tidx)
|
|
except PluginMgrTestFail as pmtf:
|
|
ex_type, ex, ex_tb = sys.exc_info()
|
|
stage = pmtf.stage
|
|
message = pmtf.message
|
|
output = pmtf.output
|
|
print(message)
|
|
print('Exception {} {} (caught in test_runner, running test {} {} {} stage {})'.
|
|
format(ex_type, ex, index, tidx['id'], tidx['name'], stage))
|
|
print('---------------')
|
|
print('traceback')
|
|
traceback.print_tb(ex_tb)
|
|
print('---------------')
|
|
if stage == 'teardown':
|
|
print('accumulated output for this test:')
|
|
if pmtf.output:
|
|
print(pmtf.output)
|
|
print('---------------')
|
|
break
|
|
index += 1
|
|
|
|
# if we failed in setup or teardown,
|
|
# fill in the remaining tests with ok-skipped
|
|
count = index
|
|
if not args.notap:
|
|
tap += 'about to flush the tap output if tests need to be skipped\n'
|
|
if tcount + 1 != index:
|
|
for tidx in testlist[index - 1:]:
|
|
msg = 'skipped - previous {} failed'.format(stage)
|
|
tap += 'ok {} - {} # {} {} {}\n'.format(
|
|
count, tidx['id'], msg, index, badtest.get('id', '--Unknown--'))
|
|
count += 1
|
|
|
|
tap += 'done flushing skipped test tap output\n'
|
|
|
|
if args.pause:
|
|
print('Want to pause\nPress enter to continue ...')
|
|
if input(sys.stdin):
|
|
print('got something on stdin')
|
|
|
|
pm.call_post_suite(index)
|
|
|
|
return tap
|
|
|
|
def has_blank_ids(idlist):
|
|
"""
|
|
Search the list for empty ID fields and return true/false accordingly.
|
|
"""
|
|
return not(all(k for k in idlist))
|
|
|
|
|
|
def load_from_file(filename):
|
|
"""
|
|
Open the JSON file containing the test cases and return them
|
|
as list of ordered dictionary objects.
|
|
"""
|
|
try:
|
|
with open(filename) as test_data:
|
|
testlist = json.load(test_data, object_pairs_hook=OrderedDict)
|
|
except json.JSONDecodeError as jde:
|
|
print('IGNORING test case file {}\n\tBECAUSE: {}'.format(filename, jde))
|
|
testlist = list()
|
|
else:
|
|
idlist = get_id_list(testlist)
|
|
if (has_blank_ids(idlist)):
|
|
for k in testlist:
|
|
k['filename'] = filename
|
|
return testlist
|
|
|
|
|
|
def args_parse():
|
|
"""
|
|
Create the argument parser.
|
|
"""
|
|
parser = argparse.ArgumentParser(description='Linux TC unit tests')
|
|
return parser
|
|
|
|
|
|
def set_args(parser):
|
|
"""
|
|
Set the command line arguments for tdc.
|
|
"""
|
|
parser.add_argument(
|
|
'-p', '--path', type=str,
|
|
help='The full path to the tc executable to use')
|
|
sg = parser.add_argument_group(
|
|
'selection', 'select which test cases: ' +
|
|
'files plus directories; filtered by categories plus testids')
|
|
ag = parser.add_argument_group(
|
|
'action', 'select action to perform on selected test cases')
|
|
|
|
sg.add_argument(
|
|
'-D', '--directory', nargs='+', metavar='DIR',
|
|
help='Collect tests from the specified directory(ies) ' +
|
|
'(default [tc-tests])')
|
|
sg.add_argument(
|
|
'-f', '--file', nargs='+', metavar='FILE',
|
|
help='Run tests from the specified file(s)')
|
|
sg.add_argument(
|
|
'-c', '--category', nargs='*', metavar='CATG', default=['+c'],
|
|
help='Run tests only from the specified category/ies, ' +
|
|
'or if no category/ies is/are specified, list known categories.')
|
|
sg.add_argument(
|
|
'-e', '--execute', nargs='+', metavar='ID',
|
|
help='Execute the specified test cases with specified IDs')
|
|
ag.add_argument(
|
|
'-l', '--list', action='store_true',
|
|
help='List all test cases, or those only within the specified category')
|
|
ag.add_argument(
|
|
'-s', '--show', action='store_true', dest='showID',
|
|
help='Display the selected test cases')
|
|
ag.add_argument(
|
|
'-i', '--id', action='store_true', dest='gen_id',
|
|
help='Generate ID numbers for new test cases')
|
|
parser.add_argument(
|
|
'-v', '--verbose', action='count', default=0,
|
|
help='Show the commands that are being run')
|
|
parser.add_argument(
|
|
'-N', '--notap', action='store_true',
|
|
help='Suppress tap results for command under test')
|
|
parser.add_argument('-d', '--device',
|
|
help='Execute the test case in flower category')
|
|
parser.add_argument(
|
|
'-P', '--pause', action='store_true',
|
|
help='Pause execution just before post-suite stage')
|
|
return parser
|
|
|
|
|
|
def check_default_settings(args, remaining, pm):
|
|
"""
|
|
Process any arguments overriding the default settings,
|
|
and ensure the settings are correct.
|
|
"""
|
|
# Allow for overriding specific settings
|
|
global NAMES
|
|
|
|
if args.path != None:
|
|
NAMES['TC'] = args.path
|
|
if args.device != None:
|
|
NAMES['DEV2'] = args.device
|
|
if not os.path.isfile(NAMES['TC']):
|
|
print("The specified tc path " + NAMES['TC'] + " does not exist.")
|
|
exit(1)
|
|
|
|
pm.call_check_args(args, remaining)
|
|
|
|
|
|
def get_id_list(alltests):
|
|
"""
|
|
Generate a list of all IDs in the test cases.
|
|
"""
|
|
return [x["id"] for x in alltests]
|
|
|
|
|
|
def check_case_id(alltests):
|
|
"""
|
|
Check for duplicate test case IDs.
|
|
"""
|
|
idl = get_id_list(alltests)
|
|
return [x for x in idl if idl.count(x) > 1]
|
|
|
|
|
|
def does_id_exist(alltests, newid):
|
|
"""
|
|
Check if a given ID already exists in the list of test cases.
|
|
"""
|
|
idl = get_id_list(alltests)
|
|
return (any(newid == x for x in idl))
|
|
|
|
|
|
def generate_case_ids(alltests):
|
|
"""
|
|
If a test case has a blank ID field, generate a random hex ID for it
|
|
and then write the test cases back to disk.
|
|
"""
|
|
import random
|
|
for c in alltests:
|
|
if (c["id"] == ""):
|
|
while True:
|
|
newid = str('{:04x}'.format(random.randrange(16**4)))
|
|
if (does_id_exist(alltests, newid)):
|
|
continue
|
|
else:
|
|
c['id'] = newid
|
|
break
|
|
|
|
ufilename = []
|
|
for c in alltests:
|
|
if ('filename' in c):
|
|
ufilename.append(c['filename'])
|
|
ufilename = get_unique_item(ufilename)
|
|
for f in ufilename:
|
|
testlist = []
|
|
for t in alltests:
|
|
if 'filename' in t:
|
|
if t['filename'] == f:
|
|
del t['filename']
|
|
testlist.append(t)
|
|
outfile = open(f, "w")
|
|
json.dump(testlist, outfile, indent=4)
|
|
outfile.write("\n")
|
|
outfile.close()
|
|
|
|
def filter_tests_by_id(args, testlist):
|
|
'''
|
|
Remove tests from testlist that are not in the named id list.
|
|
If id list is empty, return empty list.
|
|
'''
|
|
newlist = list()
|
|
if testlist and args.execute:
|
|
target_ids = args.execute
|
|
|
|
if isinstance(target_ids, list) and (len(target_ids) > 0):
|
|
newlist = list(filter(lambda x: x['id'] in target_ids, testlist))
|
|
return newlist
|
|
|
|
def filter_tests_by_category(args, testlist):
|
|
'''
|
|
Remove tests from testlist that are not in a named category.
|
|
'''
|
|
answer = list()
|
|
if args.category and testlist:
|
|
test_ids = list()
|
|
for catg in set(args.category):
|
|
if catg == '+c':
|
|
continue
|
|
print('considering category {}'.format(catg))
|
|
for tc in testlist:
|
|
if catg in tc['category'] and tc['id'] not in test_ids:
|
|
answer.append(tc)
|
|
test_ids.append(tc['id'])
|
|
|
|
return answer
|
|
|
|
def get_test_cases(args):
|
|
"""
|
|
If a test case file is specified, retrieve tests from that file.
|
|
Otherwise, glob for all json files in subdirectories and load from
|
|
each one.
|
|
Also, if requested, filter by category, and add tests matching
|
|
certain ids.
|
|
"""
|
|
import fnmatch
|
|
|
|
flist = []
|
|
testdirs = ['tc-tests']
|
|
|
|
if args.file:
|
|
# at least one file was specified - remove the default directory
|
|
testdirs = []
|
|
|
|
for ff in args.file:
|
|
if not os.path.isfile(ff):
|
|
print("IGNORING file " + ff + "\n\tBECAUSE does not exist.")
|
|
else:
|
|
flist.append(os.path.abspath(ff))
|
|
|
|
if args.directory:
|
|
testdirs = args.directory
|
|
|
|
for testdir in testdirs:
|
|
for root, dirnames, filenames in os.walk(testdir):
|
|
for filename in fnmatch.filter(filenames, '*.json'):
|
|
candidate = os.path.abspath(os.path.join(root, filename))
|
|
if candidate not in testdirs:
|
|
flist.append(candidate)
|
|
|
|
alltestcases = list()
|
|
for casefile in flist:
|
|
alltestcases = alltestcases + (load_from_file(casefile))
|
|
|
|
allcatlist = get_test_categories(alltestcases)
|
|
allidlist = get_id_list(alltestcases)
|
|
|
|
testcases_by_cats = get_categorized_testlist(alltestcases, allcatlist)
|
|
idtestcases = filter_tests_by_id(args, alltestcases)
|
|
cattestcases = filter_tests_by_category(args, alltestcases)
|
|
|
|
cat_ids = [x['id'] for x in cattestcases]
|
|
if args.execute:
|
|
if args.category:
|
|
alltestcases = cattestcases + [x for x in idtestcases if x['id'] not in cat_ids]
|
|
else:
|
|
alltestcases = idtestcases
|
|
else:
|
|
if cat_ids:
|
|
alltestcases = cattestcases
|
|
else:
|
|
# just accept the existing value of alltestcases,
|
|
# which has been filtered by file/directory
|
|
pass
|
|
|
|
return allcatlist, allidlist, testcases_by_cats, alltestcases
|
|
|
|
|
|
def set_operation_mode(pm, args):
|
|
"""
|
|
Load the test case data and process remaining arguments to determine
|
|
what the script should do for this run, and call the appropriate
|
|
function.
|
|
"""
|
|
ucat, idlist, testcases, alltests = get_test_cases(args)
|
|
|
|
if args.gen_id:
|
|
if (has_blank_ids(idlist)):
|
|
alltests = generate_case_ids(alltests)
|
|
else:
|
|
print("No empty ID fields found in test files.")
|
|
exit(0)
|
|
|
|
duplicate_ids = check_case_id(alltests)
|
|
if (len(duplicate_ids) > 0):
|
|
print("The following test case IDs are not unique:")
|
|
print(str(set(duplicate_ids)))
|
|
print("Please correct them before continuing.")
|
|
exit(1)
|
|
|
|
if args.showID:
|
|
for atest in alltests:
|
|
print_test_case(atest)
|
|
exit(0)
|
|
|
|
if isinstance(args.category, list) and (len(args.category) == 0):
|
|
print("Available categories:")
|
|
print_sll(ucat)
|
|
exit(0)
|
|
|
|
if args.list:
|
|
if args.list:
|
|
list_test_cases(alltests)
|
|
exit(0)
|
|
|
|
if len(alltests):
|
|
catresults = test_runner(pm, args, alltests)
|
|
else:
|
|
catresults = 'No tests found\n'
|
|
if args.notap:
|
|
print('Tap output suppression requested\n')
|
|
else:
|
|
print('All test results: \n\n{}'.format(catresults))
|
|
|
|
def main():
|
|
"""
|
|
Start of execution; set up argument parser and get the arguments,
|
|
and start operations.
|
|
"""
|
|
parser = args_parse()
|
|
parser = set_args(parser)
|
|
pm = PluginMgr(parser)
|
|
parser = pm.call_add_args(parser)
|
|
(args, remaining) = parser.parse_known_args()
|
|
args.NAMES = NAMES
|
|
check_default_settings(args, remaining, pm)
|
|
if args.verbose > 2:
|
|
print('args is {}'.format(args))
|
|
|
|
set_operation_mode(pm, args)
|
|
|
|
exit(0)
|
|
|
|
|
|
if __name__ == "__main__":
|
|
main()
|