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Sat, 16 Jan 2021 13:45:10 +0000 From: Vladimir Sementsov-Ogievskiy To: qemu-block@nongnu.org Subject: [PATCH v7 09/11] iotests: add testrunner.py Date: Sat, 16 Jan 2021 16:44:22 +0300 Message-Id: <20210116134424.82867-10-vsementsov@virtuozzo.com> X-Mailer: git-send-email 2.29.2 In-Reply-To: <20210116134424.82867-1-vsementsov@virtuozzo.com> References: <20210116134424.82867-1-vsementsov@virtuozzo.com> X-Originating-IP: [185.215.60.72] X-ClientProxiedBy: AM4PR0701CA0019.eurprd07.prod.outlook.com (2603:10a6:200:42::29) To AM7PR08MB5494.eurprd08.prod.outlook.com (2603:10a6:20b:dc::15) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from kvm.sw.ru (185.215.60.72) by AM4PR0701CA0019.eurprd07.prod.outlook.com (2603:10a6:200:42::29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3784.4 via Frontend Transport; Sat, 16 Jan 2021 13:45:09 +0000 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 61e2c1d7-26d1-40eb-8c5c-08d8ba24f124 X-MS-TrafficTypeDiagnostic: AM5PR0801MB2098: X-MS-Exchange-Transport-Forked: True X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:5236; 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envelope-from=vsementsov@virtuozzo.com; helo=EUR04-DB3-obe.outbound.protection.outlook.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, MSGID_FROM_MTA_HEADER=0.001, RCVD_IN_DNSWL_LOW=-0.7, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: kwolf@redhat.com, vsementsov@virtuozzo.com, jsnow@redhat.com, qemu-devel@nongnu.org, mreitz@redhat.com, den@openvz.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" Add TestRunner class, which will run tests in a new python iotests running framework. There are some differences with current ./check behavior, most significant are: - Consider all tests self-executable, just run them, don't run python by hand. - Elapsed time is cached in json file - Elapsed time precision increased a bit - use python difflib instead of "diff -w", to ignore spaces at line ends strip lines by hand. Do not ignore other spaces. Signed-off-by: Vladimir Sementsov-Ogievskiy Tested-by: Eric Blake --- tests/qemu-iotests/testrunner.py | 344 +++++++++++++++++++++++++++++++ 1 file changed, 344 insertions(+) create mode 100644 tests/qemu-iotests/testrunner.py diff --git a/tests/qemu-iotests/testrunner.py b/tests/qemu-iotests/testrunner.py new file mode 100644 index 0000000000..92722cc68b --- /dev/null +++ b/tests/qemu-iotests/testrunner.py @@ -0,0 +1,344 @@ +# Class for actual tests running. +# +# Copyright (c) 2020-2021 Virtuozzo International GmbH +# +# This program is free software; you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation; either version 2 of the License, or +# (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program. If not, see . +# + +import os +import random +from pathlib import Path +import datetime +import time +import difflib +import subprocess +import collections +import contextlib +import json +import termios +import sys +from contextlib import contextmanager +from contextlib import AbstractContextManager +from typing import List, Optional, Iterator, Any + +from testenv import TestEnv + + +def silent_unlink(path: Path) -> None: + try: + path.unlink() + except OSError: + pass + + +def file_diff(file1: str, file2: str) -> List[str]: + with open(file1) as f1, open(file2) as f2: + # We want to ignore spaces at line ends. There are a lot of mess about + # it in iotests. + # TODO: fix all tests to not produce extra spaces, fix all .out files + # and use strict diff here! + seq1 = [line.rstrip() for line in f1] + seq2 = [line.rstrip() for line in f2] + return list(difflib.unified_diff(seq1, seq2, file1, file2)) + + +# We want to save current tty settings during test run, +# since an aborting qemu call may leave things screwed up. +@contextmanager +def savetty() -> Iterator[None]: + isterm = sys.stdin.isatty() + if isterm: + fd = sys.stdin.fileno() + attr = termios.tcgetattr(0) + + try: + yield + finally: + if isterm: + termios.tcsetattr(fd, termios.TCSADRAIN, attr) + + +class LastElapsedTime(AbstractContextManager['LastElapsedTime']): + """ Cache for elapsed time for tests, to show it during new test run + + Use get() in any time. But, if use update you should then call save(), + or use update() inside with-block. + """ + def __init__(self, cache_file: str, env: TestEnv) -> None: + self.env = env + self.cache_file = cache_file + + try: + with open(cache_file) as f: + self.cache = json.load(f) + except (OSError, ValueError): + self.cache = {} + + def get(self, test: str, + default: Optional[float] = None) -> Optional[float]: + if test not in self.cache: + return default + + if self.env.imgproto not in self.cache[test]: + return default + + return self.cache[test][self.env.imgproto].get(self.env.imgfmt, + default) + + def update(self, test: str, elapsed: float) -> None: + d = self.cache.setdefault(test, {}) + d = d.setdefault(self.env.imgproto, {}) + d[self.env.imgfmt] = elapsed + + def save(self) -> None: + with open(self.cache_file, 'w') as f: + json.dump(self.cache, f) + + def __enter__(self) -> 'LastElapsedTime': + return self + + def __exit__(self, exc_type: Any, exc_value: Any, traceback: Any) -> None: + self.save() + + +TestResult = collections.namedtuple( + 'TestResult', + ['status', 'description', 'elapsed', 'diff', 'casenotrun'], + defaults=('', '', '', '')) + + +class TestRunner(AbstractContextManager['TestRunner']): + def __init__(self, env: TestEnv, makecheck: bool = False) -> None: + self.env = env + self.test_run_env = self.env.get_env() + if 'MALLOC_PERTURB_' not in os.environ and \ + 'MALLOC_PERTURB_' not in self.test_run_env: + x = random.randrange(1, 255) + self.test_run_env['MALLOC_PERTURB_'] = str(x) + + self.makecheck = makecheck + + self.last_elapsed = LastElapsedTime('.last-elapsed-cache', env) + + def __enter__(self) -> 'TestRunner': + # pylint: disable=attribute-defined-outside-init + self._stack = contextlib.ExitStack() + self._stack.enter_context(self.env) + self._stack.enter_context(self.last_elapsed) + self._stack.enter_context(savetty()) + return self + + def __exit__(self, exc_type: Any, exc_value: Any, traceback: Any) -> None: + self._stack.close() + + def test_print_one_line(self, test: str, starttime: str, + endtime: Optional[str] = None, status: str = '...', + lasttime: Optional[float] = None, + thistime: Optional[str] = None, + description: str = '', + test_field_width: Optional[int] = None, + end: str = '\n') -> None: + """ Print short test info before/after test run """ + test = os.path.basename(test) + + if test_field_width is None: + test_field_width = 8 + + if self.makecheck and status != '...': + if status and status != 'pass': + status = f' [{status}]' + else: + status = '' + + print(f' TEST iotest-{self.env.imgfmt}: {test}{status}') + return + + if lasttime: + lasttime_s = f' (last: {lasttime}s)' + else: + lasttime_s = '' + if thistime: + thistime = f'{thistime:.1f}s' + else: + thistime = '...' + + if endtime: + endtime = f'[{endtime}]' + else: + endtime = '' + + if status == 'pass': + col = '\033[32m' + elif status == 'fail': + col = '\033[1m\033[31m' + elif status == 'not run': + col = '\033[33m' + else: + col = '' + + col_end = '\033[0m' + + print(f'{test:{test_field_width}} {col}{status:10}{col_end} ' + f'[{starttime}] {endtime:13}{thistime:5} {lasttime_s:14} ' + f'{description}', end=end) + + def find_reference(self, test: str) -> str: + if self.env.cachemode == 'none': + ref = f'{test}.out.nocache' + if os.path.isfile(ref): + return ref + + ref = f'{test}.out.{self.env.imgfmt}' + if os.path.isfile(ref): + return ref + + ref = f'{test}.{self.env.qemu_default_machine}.out' + if os.path.isfile(ref): + return ref + + return f'{test}.out' + + def do_run_test(self, test: str) -> TestResult: + f_test = Path(test) + f_bad = Path(f_test.name + '.out.bad') + f_notrun = Path(f_test.name + '.notrun') + f_casenotrun = Path(f_test.name + '.casenotrun') + f_reference = Path(self.find_reference(test)) + + if not f_test.exists(): + return TestResult(status='fail', + description=f'No such test file: {f_test}') + + if not os.access(str(f_test), os.X_OK): + sys.exit(f'Not executable: {f_test}') + + if not f_reference.exists(): + return TestResult(status='fail', + description='No qualified output ' + f'(expected {f_reference})') + + for p in (f_bad, f_notrun, f_casenotrun): + silent_unlink(p) + + args = [str(f_test.resolve())] + if self.env.debug: + args.append('-d') + + with f_test.open() as f: + try: + if f.readline() == '#!/usr/bin/env python3': + args.insert(0, self.env.python) + except UnicodeDecodeError: # binary test? for future. + pass + + env = os.environ.copy() + env.update(self.test_run_env) + + t0 = time.time() + with f_bad.open('w') as f: + ret = subprocess.run(args, cwd=str(f_test.parent), env=env, + stdout=f, stderr=subprocess.STDOUT, + check=False).returncode + elapsed = round(time.time() - t0, 1) + + if ret != 0: + return TestResult(status='fail', elapsed=elapsed, + description=f'failed, exit status {ret}', + diff=file_diff(str(f_reference), str(f_bad))) + + if f_notrun.exists(): + return TestResult(status='not run', elapsed=elapsed, + description=f_notrun.read_text().strip()) + + casenotrun = None + if f_casenotrun.exists(): + casenotrun = f_casenotrun.read_text() + + diff = file_diff(str(f_reference), str(f_bad)) + if diff: + return TestResult(status='fail', elapsed=elapsed, + description='output mismatch (see {f_bad})', + diff=diff, casenotrun=casenotrun) + else: + f_bad.unlink() + self.last_elapsed.update(test, elapsed) + return TestResult(status='pass', elapsed=elapsed, + casenotrun=casenotrun) + + def run_test(self, test: str, + test_field_width: Optional[int] = None) -> TestResult: + last_el = self.last_elapsed.get(test) + start = datetime.datetime.now().strftime('%H:%M:%S') + + self.test_print_one_line(test=test, starttime=start, lasttime=last_el, + end='\r', test_field_width=test_field_width) + + res = self.do_run_test(test) + + end = datetime.datetime.now().strftime('%H:%M:%S') + self.test_print_one_line(test=test, status=res.status, + starttime=start, endtime=end, + lasttime=last_el, thistime=res.elapsed, + description=res.description, + test_field_width=test_field_width) + + if res.casenotrun: + print(res.casenotrun) + + return res + + def run_tests(self, tests: List[str]) -> None: + n_run = 0 + failed = [] + notrun = [] + casenotrun = [] + + if not self.makecheck: + self.env.print_env() + print() + + test_field_width = max(len(os.path.basename(t)) for t in tests) + 2 + + for t in tests: + name = os.path.basename(t) + res = self.run_test(t, test_field_width=test_field_width) + + assert res.status in ('pass', 'fail', 'not run') + + if res.casenotrun: + casenotrun.append(t) + + if res.status != 'not run': + n_run += 1 + + if res.status == 'fail': + failed.append(name) + if self.makecheck: + self.env.print_env() + if res.diff: + print('\n'.join(res.diff)) + elif res.status == 'not run': + notrun.append(name) + + if notrun: + print('Not run:', ' '.join(notrun)) + + if casenotrun: + print('Some cases not run in:', ' '.join(casenotrun)) + + if failed: + print('Failures:', ' '.join(failed)) + print(f'Failed {len(failed)} of {n_run} iotests') + else: + print(f'Passed all {n_run} iotests')