mirror of https://github.com/python/cpython
681 lines
24 KiB
Python
681 lines
24 KiB
Python
import os
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import random
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import re
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import shlex
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import sys
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import sysconfig
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import time
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import trace
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from test import support
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from test.support import os_helper, MS_WINDOWS
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from .cmdline import _parse_args, Namespace
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from .findtests import findtests, split_test_packages, list_cases
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from .logger import Logger
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from .pgo import setup_pgo_tests
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from .result import State, TestResult
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from .results import TestResults, EXITCODE_INTERRUPTED
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from .runtests import RunTests, HuntRefleak
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from .setup import setup_process, setup_test_dir
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from .single import run_single_test, PROGRESS_MIN_TIME
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from .utils import (
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StrPath, StrJSON, TestName, TestList, TestTuple, TestFilter,
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strip_py_suffix, count, format_duration,
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printlist, get_temp_dir, get_work_dir, exit_timeout,
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display_header, cleanup_temp_dir, print_warning,
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is_cross_compiled, get_host_runner,
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EXIT_TIMEOUT)
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class Regrtest:
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"""Execute a test suite.
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This also parses command-line options and modifies its behavior
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accordingly.
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tests -- a list of strings containing test names (optional)
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testdir -- the directory in which to look for tests (optional)
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Users other than the Python test suite will certainly want to
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specify testdir; if it's omitted, the directory containing the
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Python test suite is searched for.
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If the tests argument is omitted, the tests listed on the
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command-line will be used. If that's empty, too, then all *.py
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files beginning with test_ will be used.
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The other default arguments (verbose, quiet, exclude,
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single, randomize, use_resources, trace, coverdir,
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print_slow, and random_seed) allow programmers calling main()
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directly to set the values that would normally be set by flags
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on the command line.
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"""
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def __init__(self, ns: Namespace, _add_python_opts: bool = False):
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# Log verbosity
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self.verbose: int = int(ns.verbose)
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self.quiet: bool = ns.quiet
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self.pgo: bool = ns.pgo
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self.pgo_extended: bool = ns.pgo_extended
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# Test results
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self.results: TestResults = TestResults()
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self.first_state: str | None = None
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# Logger
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self.logger = Logger(self.results, self.quiet, self.pgo)
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# Actions
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self.want_header: bool = ns.header
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self.want_list_tests: bool = ns.list_tests
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self.want_list_cases: bool = ns.list_cases
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self.want_wait: bool = ns.wait
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self.want_cleanup: bool = ns.cleanup
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self.want_rerun: bool = ns.rerun
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self.want_run_leaks: bool = ns.runleaks
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self.ci_mode: bool = (ns.fast_ci or ns.slow_ci)
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self.want_add_python_opts: bool = (_add_python_opts
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and ns._add_python_opts)
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# Select tests
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self.match_tests: TestFilter = ns.match_tests
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self.exclude: bool = ns.exclude
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self.fromfile: StrPath | None = ns.fromfile
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self.starting_test: TestName | None = ns.start
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self.cmdline_args: TestList = ns.args
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# Workers
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if ns.use_mp is None:
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num_workers = 0 # run sequentially
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elif ns.use_mp <= 0:
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num_workers = -1 # use the number of CPUs
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else:
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num_workers = ns.use_mp
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self.num_workers: int = num_workers
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self.worker_json: StrJSON | None = ns.worker_json
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# Options to run tests
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self.fail_fast: bool = ns.failfast
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self.fail_env_changed: bool = ns.fail_env_changed
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self.fail_rerun: bool = ns.fail_rerun
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self.forever: bool = ns.forever
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self.output_on_failure: bool = ns.verbose3
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self.timeout: float | None = ns.timeout
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if ns.huntrleaks:
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warmups, runs, filename = ns.huntrleaks
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filename = os.path.abspath(filename)
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self.hunt_refleak: HuntRefleak | None = HuntRefleak(warmups, runs, filename)
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else:
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self.hunt_refleak = None
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self.test_dir: StrPath | None = ns.testdir
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self.junit_filename: StrPath | None = ns.xmlpath
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self.memory_limit: str | None = ns.memlimit
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self.gc_threshold: int | None = ns.threshold
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self.use_resources: tuple[str, ...] = tuple(ns.use_resources)
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if ns.python:
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self.python_cmd: tuple[str, ...] | None = tuple(ns.python)
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else:
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self.python_cmd = None
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self.coverage: bool = ns.trace
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self.coverage_dir: StrPath | None = ns.coverdir
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self.tmp_dir: StrPath | None = ns.tempdir
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# Randomize
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self.randomize: bool = ns.randomize
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if ('SOURCE_DATE_EPOCH' in os.environ
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# don't use the variable if empty
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and os.environ['SOURCE_DATE_EPOCH']
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):
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self.randomize = False
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# SOURCE_DATE_EPOCH should be an integer, but use a string to not
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# fail if it's not integer. random.seed() accepts a string.
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# https://reproducible-builds.org/docs/source-date-epoch/
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self.random_seed: int | str = os.environ['SOURCE_DATE_EPOCH']
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elif ns.random_seed is None:
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self.random_seed = random.getrandbits(32)
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else:
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self.random_seed = ns.random_seed
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# tests
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self.first_runtests: RunTests | None = None
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# used by --slowest
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self.print_slowest: bool = ns.print_slow
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# used to display the progress bar "[ 3/100]"
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self.start_time = time.perf_counter()
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# used by --single
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self.single_test_run: bool = ns.single
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self.next_single_test: TestName | None = None
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self.next_single_filename: StrPath | None = None
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def log(self, line=''):
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self.logger.log(line)
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def find_tests(self, tests: TestList | None = None) -> tuple[TestTuple, TestList | None]:
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if self.single_test_run:
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self.next_single_filename = os.path.join(self.tmp_dir, 'pynexttest')
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try:
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with open(self.next_single_filename, 'r') as fp:
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next_test = fp.read().strip()
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tests = [next_test]
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except OSError:
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pass
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if self.fromfile:
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tests = []
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# regex to match 'test_builtin' in line:
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# '0:00:00 [ 4/400] test_builtin -- test_dict took 1 sec'
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regex = re.compile(r'\btest_[a-zA-Z0-9_]+\b')
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with open(os.path.join(os_helper.SAVEDCWD, self.fromfile)) as fp:
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for line in fp:
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line = line.split('#', 1)[0]
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line = line.strip()
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match = regex.search(line)
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if match is not None:
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tests.append(match.group())
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strip_py_suffix(tests)
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if self.pgo:
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# add default PGO tests if no tests are specified
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setup_pgo_tests(self.cmdline_args, self.pgo_extended)
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exclude_tests = set()
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if self.exclude:
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for arg in self.cmdline_args:
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exclude_tests.add(arg)
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self.cmdline_args = []
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alltests = findtests(testdir=self.test_dir,
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exclude=exclude_tests)
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if not self.fromfile:
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selected = tests or self.cmdline_args
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if selected:
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selected = split_test_packages(selected)
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else:
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selected = alltests
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else:
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selected = tests
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if self.single_test_run:
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selected = selected[:1]
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try:
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pos = alltests.index(selected[0])
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self.next_single_test = alltests[pos + 1]
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except IndexError:
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pass
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# Remove all the selected tests that precede start if it's set.
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if self.starting_test:
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try:
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del selected[:selected.index(self.starting_test)]
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except ValueError:
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print(f"Cannot find starting test: {self.starting_test}")
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sys.exit(1)
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random.seed(self.random_seed)
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if self.randomize:
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random.shuffle(selected)
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return (tuple(selected), tests)
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@staticmethod
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def list_tests(tests: TestTuple):
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for name in tests:
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print(name)
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def _rerun_failed_tests(self, runtests: RunTests):
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# Configure the runner to re-run tests
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if self.num_workers == 0:
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# Always run tests in fresh processes to have more deterministic
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# initial state. Don't re-run tests in parallel but limit to a
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# single worker process to have side effects (on the system load
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# and timings) between tests.
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self.num_workers = 1
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tests, match_tests_dict = self.results.prepare_rerun()
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# Re-run failed tests
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self.log(f"Re-running {len(tests)} failed tests in verbose mode in subprocesses")
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runtests = runtests.copy(
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tests=tests,
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rerun=True,
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verbose=True,
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forever=False,
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fail_fast=False,
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match_tests_dict=match_tests_dict,
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output_on_failure=False)
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self.logger.set_tests(runtests)
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self._run_tests_mp(runtests, self.num_workers)
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return runtests
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def rerun_failed_tests(self, runtests: RunTests):
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if self.python_cmd:
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# Temp patch for https://github.com/python/cpython/issues/94052
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self.log(
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"Re-running failed tests is not supported with --python "
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"host runner option."
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)
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return
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self.first_state = self.get_state()
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print()
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rerun_runtests = self._rerun_failed_tests(runtests)
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if self.results.bad:
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print(count(len(self.results.bad), 'test'), "failed again:")
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printlist(self.results.bad)
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self.display_result(rerun_runtests)
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def display_result(self, runtests):
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# If running the test suite for PGO then no one cares about results.
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if runtests.pgo:
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return
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state = self.get_state()
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print()
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print(f"== Tests result: {state} ==")
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self.results.display_result(runtests.tests,
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self.quiet, self.print_slowest)
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def run_test(
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self, test_name: TestName, runtests: RunTests, tracer: trace.Trace | None
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) -> TestResult:
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if tracer is not None:
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# If we're tracing code coverage, then we don't exit with status
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# if on a false return value from main.
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cmd = ('result = run_single_test(test_name, runtests)')
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namespace = dict(locals())
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tracer.runctx(cmd, globals=globals(), locals=namespace)
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result = namespace['result']
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# Mypy doesn't know about this attribute yet,
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# but it will do soon: https://github.com/python/typeshed/pull/11091
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result.covered_lines = list(tracer.counts) # type: ignore[attr-defined]
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else:
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result = run_single_test(test_name, runtests)
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self.results.accumulate_result(result, runtests)
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return result
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def run_tests_sequentially(self, runtests) -> None:
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if self.coverage:
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tracer = trace.Trace(trace=False, count=True)
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else:
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tracer = None
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save_modules = set(sys.modules)
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jobs = runtests.get_jobs()
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if jobs is not None:
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tests = count(jobs, 'test')
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else:
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tests = 'tests'
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msg = f"Run {tests} sequentially"
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if runtests.timeout:
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msg += " (timeout: %s)" % format_duration(runtests.timeout)
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self.log(msg)
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previous_test = None
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tests_iter = runtests.iter_tests()
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for test_index, test_name in enumerate(tests_iter, 1):
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start_time = time.perf_counter()
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text = test_name
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if previous_test:
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text = '%s -- %s' % (text, previous_test)
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self.logger.display_progress(test_index, text)
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result = self.run_test(test_name, runtests, tracer)
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# Unload the newly imported test modules (best effort finalization)
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new_modules = [module for module in sys.modules
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if module not in save_modules and
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module.startswith(("test.", "test_"))]
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for module in new_modules:
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sys.modules.pop(module, None)
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# Remove the attribute of the parent module.
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parent, _, name = module.rpartition('.')
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try:
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delattr(sys.modules[parent], name)
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except (KeyError, AttributeError):
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pass
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if result.must_stop(self.fail_fast, self.fail_env_changed):
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break
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previous_test = str(result)
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test_time = time.perf_counter() - start_time
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if test_time >= PROGRESS_MIN_TIME:
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previous_test = "%s in %s" % (previous_test, format_duration(test_time))
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elif result.state == State.PASSED:
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# be quiet: say nothing if the test passed shortly
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previous_test = None
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if previous_test:
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print(previous_test)
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def get_state(self):
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state = self.results.get_state(self.fail_env_changed)
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if self.first_state:
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state = f'{self.first_state} then {state}'
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return state
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def _run_tests_mp(self, runtests: RunTests, num_workers: int) -> None:
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from .run_workers import RunWorkers
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RunWorkers(num_workers, runtests, self.logger, self.results).run()
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def finalize_tests(self, coverage: trace.CoverageResults | None) -> None:
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if self.next_single_filename:
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if self.next_single_test:
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with open(self.next_single_filename, 'w') as fp:
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fp.write(self.next_single_test + '\n')
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else:
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os.unlink(self.next_single_filename)
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if coverage is not None:
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# uses a new-in-Python 3.13 keyword argument that mypy doesn't know about yet:
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coverage.write_results(show_missing=True, summary=True, # type: ignore[call-arg]
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coverdir=self.coverage_dir,
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ignore_missing_files=True)
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if self.want_run_leaks:
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os.system("leaks %d" % os.getpid())
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if self.junit_filename:
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self.results.write_junit(self.junit_filename)
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def display_summary(self):
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duration = time.perf_counter() - self.logger.start_time
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filtered = bool(self.match_tests)
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# Total duration
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print()
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print("Total duration: %s" % format_duration(duration))
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self.results.display_summary(self.first_runtests, filtered)
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# Result
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state = self.get_state()
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print(f"Result: {state}")
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def create_run_tests(self, tests: TestTuple):
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return RunTests(
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tests,
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fail_fast=self.fail_fast,
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fail_env_changed=self.fail_env_changed,
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match_tests=self.match_tests,
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match_tests_dict=None,
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rerun=False,
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forever=self.forever,
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pgo=self.pgo,
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pgo_extended=self.pgo_extended,
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output_on_failure=self.output_on_failure,
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timeout=self.timeout,
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verbose=self.verbose,
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quiet=self.quiet,
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hunt_refleak=self.hunt_refleak,
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test_dir=self.test_dir,
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use_junit=(self.junit_filename is not None),
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coverage=self.coverage,
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memory_limit=self.memory_limit,
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gc_threshold=self.gc_threshold,
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use_resources=self.use_resources,
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python_cmd=self.python_cmd,
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randomize=self.randomize,
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random_seed=self.random_seed,
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)
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def _run_tests(self, selected: TestTuple, tests: TestList | None) -> int:
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if self.hunt_refleak and self.hunt_refleak.warmups < 3:
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msg = ("WARNING: Running tests with --huntrleaks/-R and "
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"less than 3 warmup repetitions can give false positives!")
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print(msg, file=sys.stdout, flush=True)
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if self.num_workers < 0:
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# Use all CPUs + 2 extra worker processes for tests
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# that like to sleep
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#
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# os.process.cpu_count() is new in Python 3.13;
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# mypy doesn't know about it yet
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self.num_workers = (os.process_cpu_count() or 1) + 2 # type: ignore[attr-defined]
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# For a partial run, we do not need to clutter the output.
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if (self.want_header
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or not(self.pgo or self.quiet or self.single_test_run
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or tests or self.cmdline_args)):
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display_header(self.use_resources, self.python_cmd)
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print("Using random seed:", self.random_seed)
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runtests = self.create_run_tests(selected)
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self.first_runtests = runtests
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self.logger.set_tests(runtests)
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setup_process()
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if self.hunt_refleak and not self.num_workers:
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# gh-109739: WindowsLoadTracker thread interfers with refleak check
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use_load_tracker = False
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else:
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# WindowsLoadTracker is only needed on Windows
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use_load_tracker = MS_WINDOWS
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if use_load_tracker:
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self.logger.start_load_tracker()
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try:
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if self.num_workers:
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self._run_tests_mp(runtests, self.num_workers)
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else:
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self.run_tests_sequentially(runtests)
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coverage = self.results.get_coverage_results()
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self.display_result(runtests)
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if self.want_rerun and self.results.need_rerun():
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self.rerun_failed_tests(runtests)
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finally:
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if use_load_tracker:
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self.logger.stop_load_tracker()
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self.display_summary()
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self.finalize_tests(coverage)
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return self.results.get_exitcode(self.fail_env_changed,
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self.fail_rerun)
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def run_tests(self, selected: TestTuple, tests: TestList | None) -> int:
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os.makedirs(self.tmp_dir, exist_ok=True)
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work_dir = get_work_dir(self.tmp_dir)
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# Put a timeout on Python exit
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with exit_timeout():
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|
# Run the tests in a context manager that temporarily changes the
|
|
# CWD to a temporary and writable directory. If it's not possible
|
|
# to create or change the CWD, the original CWD will be used.
|
|
# The original CWD is available from os_helper.SAVEDCWD.
|
|
with os_helper.temp_cwd(work_dir, quiet=True):
|
|
# When using multiprocessing, worker processes will use
|
|
# work_dir as their parent temporary directory. So when the
|
|
# main process exit, it removes also subdirectories of worker
|
|
# processes.
|
|
return self._run_tests(selected, tests)
|
|
|
|
def _add_cross_compile_opts(self, regrtest_opts):
|
|
# WASM/WASI buildbot builders pass multiple PYTHON environment
|
|
# variables such as PYTHONPATH and _PYTHON_HOSTRUNNER.
|
|
keep_environ = bool(self.python_cmd)
|
|
environ = None
|
|
|
|
# Are we using cross-compilation?
|
|
cross_compile = is_cross_compiled()
|
|
|
|
# Get HOSTRUNNER
|
|
hostrunner = get_host_runner()
|
|
|
|
if cross_compile:
|
|
# emulate -E, but keep PYTHONPATH + cross compile env vars,
|
|
# so test executable can load correct sysconfigdata file.
|
|
keep = {
|
|
'_PYTHON_PROJECT_BASE',
|
|
'_PYTHON_HOST_PLATFORM',
|
|
'_PYTHON_SYSCONFIGDATA_NAME',
|
|
'PYTHONPATH'
|
|
}
|
|
old_environ = os.environ
|
|
new_environ = {
|
|
name: value for name, value in os.environ.items()
|
|
if not name.startswith(('PYTHON', '_PYTHON')) or name in keep
|
|
}
|
|
# Only set environ if at least one variable was removed
|
|
if new_environ != old_environ:
|
|
environ = new_environ
|
|
keep_environ = True
|
|
|
|
if cross_compile and hostrunner:
|
|
if self.num_workers == 0:
|
|
# For now use only two cores for cross-compiled builds;
|
|
# hostrunner can be expensive.
|
|
regrtest_opts.extend(['-j', '2'])
|
|
|
|
# If HOSTRUNNER is set and -p/--python option is not given, then
|
|
# use hostrunner to execute python binary for tests.
|
|
if not self.python_cmd:
|
|
buildpython = sysconfig.get_config_var("BUILDPYTHON")
|
|
python_cmd = f"{hostrunner} {buildpython}"
|
|
regrtest_opts.extend(["--python", python_cmd])
|
|
keep_environ = True
|
|
|
|
return (environ, keep_environ)
|
|
|
|
def _add_ci_python_opts(self, python_opts, keep_environ):
|
|
# --fast-ci and --slow-ci add options to Python:
|
|
# "-u -W default -bb -E"
|
|
|
|
# Unbuffered stdout and stderr
|
|
if not sys.stdout.write_through:
|
|
python_opts.append('-u')
|
|
|
|
# Add warnings filter 'default'
|
|
if 'default' not in sys.warnoptions:
|
|
python_opts.extend(('-W', 'default'))
|
|
|
|
# Error on bytes/str comparison
|
|
if sys.flags.bytes_warning < 2:
|
|
python_opts.append('-bb')
|
|
|
|
if not keep_environ:
|
|
# Ignore PYTHON* environment variables
|
|
if not sys.flags.ignore_environment:
|
|
python_opts.append('-E')
|
|
|
|
def _execute_python(self, cmd, environ):
|
|
# Make sure that messages before execv() are logged
|
|
sys.stdout.flush()
|
|
sys.stderr.flush()
|
|
|
|
cmd_text = shlex.join(cmd)
|
|
try:
|
|
print(f"+ {cmd_text}", flush=True)
|
|
|
|
if hasattr(os, 'execv') and not MS_WINDOWS:
|
|
os.execv(cmd[0], cmd)
|
|
# On success, execv() do no return.
|
|
# On error, it raises an OSError.
|
|
else:
|
|
import subprocess
|
|
with subprocess.Popen(cmd, env=environ) as proc:
|
|
try:
|
|
proc.wait()
|
|
except KeyboardInterrupt:
|
|
# There is no need to call proc.terminate(): on CTRL+C,
|
|
# SIGTERM is also sent to the child process.
|
|
try:
|
|
proc.wait(timeout=EXIT_TIMEOUT)
|
|
except subprocess.TimeoutExpired:
|
|
proc.kill()
|
|
proc.wait()
|
|
sys.exit(EXITCODE_INTERRUPTED)
|
|
|
|
sys.exit(proc.returncode)
|
|
except Exception as exc:
|
|
print_warning(f"Failed to change Python options: {exc!r}\n"
|
|
f"Command: {cmd_text}")
|
|
# continue executing main()
|
|
|
|
def _add_python_opts(self):
|
|
python_opts = []
|
|
regrtest_opts = []
|
|
|
|
environ, keep_environ = self._add_cross_compile_opts(regrtest_opts)
|
|
if self.ci_mode:
|
|
self._add_ci_python_opts(python_opts, keep_environ)
|
|
|
|
if (not python_opts) and (not regrtest_opts) and (environ is None):
|
|
# Nothing changed: nothing to do
|
|
return
|
|
|
|
# Create new command line
|
|
cmd = list(sys.orig_argv)
|
|
if python_opts:
|
|
cmd[1:1] = python_opts
|
|
if regrtest_opts:
|
|
cmd.extend(regrtest_opts)
|
|
cmd.append("--dont-add-python-opts")
|
|
|
|
self._execute_python(cmd, environ)
|
|
|
|
def _init(self):
|
|
# Set sys.stdout encoder error handler to backslashreplace,
|
|
# similar to sys.stderr error handler, to avoid UnicodeEncodeError
|
|
# when printing a traceback or any other non-encodable character.
|
|
sys.stdout.reconfigure(errors="backslashreplace")
|
|
|
|
if self.junit_filename and not os.path.isabs(self.junit_filename):
|
|
self.junit_filename = os.path.abspath(self.junit_filename)
|
|
|
|
strip_py_suffix(self.cmdline_args)
|
|
|
|
self.tmp_dir = get_temp_dir(self.tmp_dir)
|
|
|
|
def main(self, tests: TestList | None = None):
|
|
if self.want_add_python_opts:
|
|
self._add_python_opts()
|
|
|
|
self._init()
|
|
|
|
if self.want_cleanup:
|
|
cleanup_temp_dir(self.tmp_dir)
|
|
sys.exit(0)
|
|
|
|
if self.want_wait:
|
|
input("Press any key to continue...")
|
|
|
|
setup_test_dir(self.test_dir)
|
|
selected, tests = self.find_tests(tests)
|
|
|
|
exitcode = 0
|
|
if self.want_list_tests:
|
|
self.list_tests(selected)
|
|
elif self.want_list_cases:
|
|
list_cases(selected,
|
|
match_tests=self.match_tests,
|
|
test_dir=self.test_dir)
|
|
else:
|
|
exitcode = self.run_tests(selected, tests)
|
|
|
|
sys.exit(exitcode)
|
|
|
|
|
|
def main(tests=None, _add_python_opts=False, **kwargs):
|
|
"""Run the Python suite."""
|
|
ns = _parse_args(sys.argv[1:], **kwargs)
|
|
Regrtest(ns, _add_python_opts=_add_python_opts).main(tests=tests)
|