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envelope-from=vsementsov@virtuozzo.com; helo=EUR05-VI1-obe.outbound.protection.outlook.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 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_NONE=-0.0001, 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, qemu-devel@nongnu.org, mreitz@redhat.com, den@openvz.org, jsnow@redhat.com Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.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 - Instead of using "diff -w" which ignores all whitespace differences, manually strip whitespace at line end then use python difflib, which no longer ignores spacing mid-line Signed-off-by: Vladimir Sementsov-Ogievskiy --- tests/qemu-iotests/testrunner.py | 366 +++++++++++++++++++++++++++++++ 1 file changed, 366 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..8480d2d586 --- /dev/null +++ b/tests/qemu-iotests/testrunner.py @@ -0,0 +1,366 @@ +# Class for actually running tests. +# +# 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 +from pathlib import Path +import datetime +import time +import difflib +import subprocess +import contextlib +import json +import termios +import sys +from contextlib import contextmanager +from contextlib import AbstractContextManager +from typing import List, Optional, Iterator, Any, Sequence + +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] + res = [line.rstrip() + for line in difflib.unified_diff(seq1, seq2, file1, file2)] + return res + + +# 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(fd) + + 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 + + It is safe to use get() at any time. To use update(), you must either + use it inside with-block or use save() after update(). + """ + 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() + + +class TestResult: + def __init__(self, status: str, description: str = '', + elapsed: Optional[float] = None, diff: Sequence[str] = (), + casenotrun: str = '', interrupted: bool = False) -> None: + self.status = status + self.description = description + self.elapsed = elapsed + self.diff = diff + self.casenotrun = casenotrun + self.interrupted = interrupted + + +class TestRunner(AbstractContextManager['TestRunner']): + def __init__(self, env: TestEnv, makecheck: bool = False, + color: str = 'auto') -> None: + self.env = env + self.test_run_env = self.env.get_env() + self.makecheck = makecheck + self.last_elapsed = LastElapsedTime('.last-elapsed-cache', env) + + assert color in ('auto', 'on', 'off') + self.color = (color == 'on') or (color == 'auto' and + sys.stdout.isatty()) + + self._stack: contextlib.ExitStack + + def __enter__(self) -> 'TestRunner': + 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[float] = 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:.1f}s)' + else: + lasttime_s = '' + if thistime: + thistime_s = f'{thistime:.1f}s' + else: + thistime_s = '...' + + if endtime: + endtime = f'[{endtime}]' + else: + endtime = '' + + if self.color: + 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' + else: + col = '' + col_end = '' + + print(f'{test:{test_field_width}} {col}{status:10}{col_end} ' + f'[{starttime}] {endtime:13}{thistime_s: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='not run', + 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: + proc = subprocess.Popen(args, cwd=str(f_test.parent), env=env, + stdout=f, stderr=subprocess.STDOUT) + try: + proc.wait() + except KeyboardInterrupt: + proc.terminate() + proc.wait() + return TestResult(status='not run', + description='Interrupted by user', + interrupted=True) + ret = proc.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', + description=f_notrun.read_text().strip()) + + casenotrun = '' + 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=f'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 res.interrupted: + break + + 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')