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19058b9f62
Replace the child process `typeperf.exe` with a daemon thread that reads the performance counters directly. This prevents the issues that arise from inherited handles in grandchild processes (see issue37531 for discussion). We only use the load tracker when running tests in multiprocess mode. This prevents inadvertent interactions with tests expecting a single threaded environment. Displaying load is really only helpful for buildbots running in multiprocess mode anyway.
736 lines
25 KiB
Python
736 lines
25 KiB
Python
import faulthandler
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import locale
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import os
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import platform
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import random
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import re
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import sys
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import sysconfig
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import tempfile
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import time
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import unittest
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from test.libregrtest.cmdline import _parse_args
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from test.libregrtest.runtest import (
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findtests, runtest, get_abs_module, is_failed,
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STDTESTS, NOTTESTS, PROGRESS_MIN_TIME,
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Passed, Failed, EnvChanged, Skipped, ResourceDenied, Interrupted,
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ChildError, DidNotRun)
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from test.libregrtest.setup import setup_tests
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from test.libregrtest.pgo import setup_pgo_tests
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from test.libregrtest.utils import removepy, count, format_duration, printlist
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from test import support
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from test.support import os_helper
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# bpo-38203: Maximum delay in seconds to exit Python (call Py_Finalize()).
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# Used to protect against threading._shutdown() hang.
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# Must be smaller than buildbot "1200 seconds without output" limit.
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EXIT_TIMEOUT = 120.0
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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):
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# Namespace of command line options
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self.ns = None
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# tests
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self.tests = []
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self.selected = []
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# test results
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self.good = []
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self.bad = []
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self.skipped = []
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self.resource_denieds = []
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self.environment_changed = []
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self.run_no_tests = []
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self.need_rerun = []
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self.rerun = []
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self.first_result = None
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self.interrupted = False
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# used by --slow
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self.test_times = []
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# used by --coverage, trace.Trace instance
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self.tracer = None
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# used to display the progress bar "[ 3/100]"
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self.start_time = time.monotonic()
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self.test_count = ''
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self.test_count_width = 1
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# used by --single
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self.next_single_test = None
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self.next_single_filename = None
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# used by --junit-xml
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self.testsuite_xml = None
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# misc
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self.win_load_tracker = None
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self.tmp_dir = None
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self.worker_test_name = None
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def get_executed(self):
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return (set(self.good) | set(self.bad) | set(self.skipped)
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| set(self.resource_denieds) | set(self.environment_changed)
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| set(self.run_no_tests))
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def accumulate_result(self, result, rerun=False):
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test_name = result.name
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if not isinstance(result, (ChildError, Interrupted)) and not rerun:
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self.test_times.append((result.duration_sec, test_name))
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if isinstance(result, Passed):
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self.good.append(test_name)
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elif isinstance(result, ResourceDenied):
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self.skipped.append(test_name)
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self.resource_denieds.append(test_name)
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elif isinstance(result, Skipped):
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self.skipped.append(test_name)
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elif isinstance(result, EnvChanged):
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self.environment_changed.append(test_name)
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elif isinstance(result, Failed):
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if not rerun:
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self.bad.append(test_name)
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self.need_rerun.append(result)
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elif isinstance(result, DidNotRun):
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self.run_no_tests.append(test_name)
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elif isinstance(result, Interrupted):
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self.interrupted = True
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else:
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raise ValueError("invalid test result: %r" % result)
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if rerun and not isinstance(result, (Failed, Interrupted)):
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self.bad.remove(test_name)
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xml_data = result.xml_data
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if xml_data:
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import xml.etree.ElementTree as ET
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for e in xml_data:
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try:
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self.testsuite_xml.append(ET.fromstring(e))
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except ET.ParseError:
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print(xml_data, file=sys.__stderr__)
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raise
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def log(self, line=''):
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empty = not line
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# add the system load prefix: "load avg: 1.80 "
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load_avg = self.getloadavg()
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if load_avg is not None:
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line = f"load avg: {load_avg:.2f} {line}"
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# add the timestamp prefix: "0:01:05 "
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test_time = time.monotonic() - self.start_time
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mins, secs = divmod(int(test_time), 60)
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hours, mins = divmod(mins, 60)
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test_time = "%d:%02d:%02d" % (hours, mins, secs)
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line = f"{test_time} {line}"
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if empty:
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line = line[:-1]
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print(line, flush=True)
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def display_progress(self, test_index, text):
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if self.ns.quiet:
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return
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# "[ 51/405/1] test_tcl passed"
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line = f"{test_index:{self.test_count_width}}{self.test_count}"
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fails = len(self.bad) + len(self.environment_changed)
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if fails and not self.ns.pgo:
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line = f"{line}/{fails}"
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self.log(f"[{line}] {text}")
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def parse_args(self, kwargs):
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ns = _parse_args(sys.argv[1:], **kwargs)
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if ns.xmlpath:
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support.junit_xml_list = self.testsuite_xml = []
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worker_args = ns.worker_args
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if worker_args is not None:
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from test.libregrtest.runtest_mp import parse_worker_args
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ns, test_name = parse_worker_args(ns.worker_args)
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ns.worker_args = worker_args
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self.worker_test_name = test_name
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# Strip .py extensions.
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removepy(ns.args)
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if ns.huntrleaks:
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warmup, repetitions, _ = ns.huntrleaks
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if warmup < 1 or repetitions < 1:
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msg = ("Invalid values for the --huntrleaks/-R parameters. The "
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"number of warmups and repetitions must be at least 1 "
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"each (1:1).")
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print(msg, file=sys.stderr, flush=True)
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sys.exit(2)
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if ns.tempdir:
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ns.tempdir = os.path.expanduser(ns.tempdir)
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self.ns = ns
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def find_tests(self, tests):
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self.tests = tests
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if self.ns.single:
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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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self.tests = [next_test]
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except OSError:
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pass
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if self.ns.fromfile:
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self.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.ns.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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self.tests.append(match.group())
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removepy(self.tests)
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if self.ns.pgo:
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# add default PGO tests if no tests are specified
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setup_pgo_tests(self.ns)
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stdtests = STDTESTS[:]
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nottests = NOTTESTS.copy()
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if self.ns.exclude:
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for arg in self.ns.args:
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if arg in stdtests:
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stdtests.remove(arg)
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nottests.add(arg)
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self.ns.args = []
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# if testdir is set, then we are not running the python tests suite, so
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# don't add default tests to be executed or skipped (pass empty values)
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if self.ns.testdir:
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alltests = findtests(self.ns.testdir, list(), set())
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else:
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alltests = findtests(self.ns.testdir, stdtests, nottests)
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if not self.ns.fromfile:
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self.selected = self.tests or self.ns.args or alltests
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else:
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self.selected = self.tests
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if self.ns.single:
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self.selected = self.selected[:1]
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try:
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pos = alltests.index(self.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.ns.start:
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try:
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del self.selected[:self.selected.index(self.ns.start)]
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except ValueError:
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print("Couldn't find starting test (%s), using all tests"
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% self.ns.start, file=sys.stderr)
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if self.ns.randomize:
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if self.ns.random_seed is None:
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self.ns.random_seed = random.randrange(10000000)
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random.seed(self.ns.random_seed)
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random.shuffle(self.selected)
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def list_tests(self):
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for name in self.selected:
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print(name)
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def _list_cases(self, suite):
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for test in suite:
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if isinstance(test, unittest.loader._FailedTest):
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continue
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if isinstance(test, unittest.TestSuite):
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self._list_cases(test)
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elif isinstance(test, unittest.TestCase):
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if support.match_test(test):
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print(test.id())
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def list_cases(self):
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support.verbose = False
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support.set_match_tests(self.ns.match_tests, self.ns.ignore_tests)
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for test_name in self.selected:
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abstest = get_abs_module(self.ns, test_name)
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try:
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suite = unittest.defaultTestLoader.loadTestsFromName(abstest)
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self._list_cases(suite)
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except unittest.SkipTest:
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self.skipped.append(test_name)
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if self.skipped:
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print(file=sys.stderr)
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print(count(len(self.skipped), "test"), "skipped:", file=sys.stderr)
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printlist(self.skipped, file=sys.stderr)
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def rerun_failed_tests(self):
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self.ns.verbose = True
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self.ns.failfast = False
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self.ns.verbose3 = False
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self.first_result = self.get_tests_result()
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self.log()
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self.log("Re-running failed tests in verbose mode")
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rerun_list = list(self.need_rerun)
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self.need_rerun.clear()
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for result in rerun_list:
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test_name = result.name
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self.rerun.append(test_name)
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errors = result.errors or []
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failures = result.failures or []
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error_names = [test_full_name.split(" ")[0] for (test_full_name, *_) in errors]
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failure_names = [test_full_name.split(" ")[0] for (test_full_name, *_) in failures]
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self.ns.verbose = True
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orig_match_tests = self.ns.match_tests
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if errors or failures:
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if self.ns.match_tests is None:
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self.ns.match_tests = []
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self.ns.match_tests.extend(error_names)
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self.ns.match_tests.extend(failure_names)
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matching = "matching: " + ", ".join(self.ns.match_tests)
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self.log(f"Re-running {test_name} in verbose mode ({matching})")
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else:
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self.log(f"Re-running {test_name} in verbose mode")
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result = runtest(self.ns, test_name)
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self.ns.match_tests = orig_match_tests
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self.accumulate_result(result, rerun=True)
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if isinstance(result, Interrupted):
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break
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if self.bad:
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print(count(len(self.bad), 'test'), "failed again:")
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printlist(self.bad)
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self.display_result()
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def display_result(self):
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# If running the test suite for PGO then no one cares about results.
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if self.ns.pgo:
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return
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print()
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print("== Tests result: %s ==" % self.get_tests_result())
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if self.interrupted:
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print("Test suite interrupted by signal SIGINT.")
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omitted = set(self.selected) - self.get_executed()
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if omitted:
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print()
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print(count(len(omitted), "test"), "omitted:")
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printlist(omitted)
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if self.good and not self.ns.quiet:
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print()
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if (not self.bad
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and not self.skipped
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and not self.interrupted
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and len(self.good) > 1):
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print("All", end=' ')
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print(count(len(self.good), "test"), "OK.")
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if self.ns.print_slow:
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self.test_times.sort(reverse=True)
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print()
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print("10 slowest tests:")
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for test_time, test in self.test_times[:10]:
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print("- %s: %s" % (test, format_duration(test_time)))
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if self.bad:
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print()
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print(count(len(self.bad), "test"), "failed:")
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printlist(self.bad)
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if self.environment_changed:
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print()
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print("{} altered the execution environment:".format(
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count(len(self.environment_changed), "test")))
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printlist(self.environment_changed)
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if self.skipped and not self.ns.quiet:
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print()
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print(count(len(self.skipped), "test"), "skipped:")
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printlist(self.skipped)
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if self.rerun:
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print()
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print("%s:" % count(len(self.rerun), "re-run test"))
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printlist(self.rerun)
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if self.run_no_tests:
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print()
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print(count(len(self.run_no_tests), "test"), "run no tests:")
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printlist(self.run_no_tests)
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def run_tests_sequential(self):
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if self.ns.trace:
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import trace
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self.tracer = trace.Trace(trace=False, count=True)
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save_modules = sys.modules.keys()
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msg = "Run tests sequentially"
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if self.ns.timeout:
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msg += " (timeout: %s)" % format_duration(self.ns.timeout)
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self.log(msg)
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previous_test = None
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for test_index, test_name in enumerate(self.tests, 1):
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start_time = time.monotonic()
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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.display_progress(test_index, text)
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if self.tracer:
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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 = runtest(self.ns, test_name); '
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'self.accumulate_result(result)')
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ns = dict(locals())
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self.tracer.runctx(cmd, globals=globals(), locals=ns)
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result = ns['result']
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else:
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result = runtest(self.ns, test_name)
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self.accumulate_result(result)
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if isinstance(result, Interrupted):
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break
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previous_test = str(result)
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test_time = time.monotonic() - 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 isinstance(result, 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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# Unload the newly imported modules (best effort finalization)
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for module in sys.modules.keys():
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if module not in save_modules and module.startswith("test."):
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support.unload(module)
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if self.ns.failfast and is_failed(result, self.ns):
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break
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if previous_test:
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print(previous_test)
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def _test_forever(self, tests):
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while True:
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for test_name in tests:
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yield test_name
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if self.bad:
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return
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if self.ns.fail_env_changed and self.environment_changed:
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return
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def display_header(self):
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# Print basic platform information
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print("==", platform.python_implementation(), *sys.version.split())
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print("==", platform.platform(aliased=True),
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"%s-endian" % sys.byteorder)
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print("== cwd:", os.getcwd())
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cpu_count = os.cpu_count()
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if cpu_count:
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print("== CPU count:", cpu_count)
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print("== encodings: locale=%s, FS=%s"
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% (locale.getpreferredencoding(False),
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sys.getfilesystemencoding()))
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def get_tests_result(self):
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result = []
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if self.bad:
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result.append("FAILURE")
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elif self.ns.fail_env_changed and self.environment_changed:
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result.append("ENV CHANGED")
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elif not any((self.good, self.bad, self.skipped, self.interrupted,
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self.environment_changed)):
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result.append("NO TEST RUN")
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if self.interrupted:
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result.append("INTERRUPTED")
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if not result:
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result.append("SUCCESS")
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result = ', '.join(result)
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if self.first_result:
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result = '%s then %s' % (self.first_result, result)
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return result
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|
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def run_tests(self):
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# For a partial run, we do not need to clutter the output.
|
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if (self.ns.header
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|
or not(self.ns.pgo or self.ns.quiet or self.ns.single
|
|
or self.tests or self.ns.args)):
|
|
self.display_header()
|
|
|
|
if self.ns.huntrleaks:
|
|
warmup, repetitions, _ = self.ns.huntrleaks
|
|
if warmup < 3:
|
|
msg = ("WARNING: Running tests with --huntrleaks/-R and less than "
|
|
"3 warmup repetitions can give false positives!")
|
|
print(msg, file=sys.stdout, flush=True)
|
|
|
|
if self.ns.randomize:
|
|
print("Using random seed", self.ns.random_seed)
|
|
|
|
if self.ns.forever:
|
|
self.tests = self._test_forever(list(self.selected))
|
|
self.test_count = ''
|
|
self.test_count_width = 3
|
|
else:
|
|
self.tests = iter(self.selected)
|
|
self.test_count = '/{}'.format(len(self.selected))
|
|
self.test_count_width = len(self.test_count) - 1
|
|
|
|
if self.ns.use_mp:
|
|
from test.libregrtest.runtest_mp import run_tests_multiprocess
|
|
# If we're on windows and this is the parent runner (not a worker),
|
|
# track the load average.
|
|
if sys.platform == 'win32' and self.worker_test_name is None:
|
|
from test.libregrtest.win_utils import WindowsLoadTracker
|
|
|
|
try:
|
|
self.win_load_tracker = WindowsLoadTracker()
|
|
except PermissionError as error:
|
|
# Standard accounts may not have access to the performance
|
|
# counters.
|
|
print(f'Failed to create WindowsLoadTracker: {error}')
|
|
|
|
try:
|
|
run_tests_multiprocess(self)
|
|
finally:
|
|
if self.win_load_tracker is not None:
|
|
self.win_load_tracker.close()
|
|
self.win_load_tracker = None
|
|
else:
|
|
self.run_tests_sequential()
|
|
|
|
def finalize(self):
|
|
if self.next_single_filename:
|
|
if self.next_single_test:
|
|
with open(self.next_single_filename, 'w') as fp:
|
|
fp.write(self.next_single_test + '\n')
|
|
else:
|
|
os.unlink(self.next_single_filename)
|
|
|
|
if self.tracer:
|
|
r = self.tracer.results()
|
|
r.write_results(show_missing=True, summary=True,
|
|
coverdir=self.ns.coverdir)
|
|
|
|
print()
|
|
duration = time.monotonic() - self.start_time
|
|
print("Total duration: %s" % format_duration(duration))
|
|
print("Tests result: %s" % self.get_tests_result())
|
|
|
|
if self.ns.runleaks:
|
|
os.system("leaks %d" % os.getpid())
|
|
|
|
def save_xml_result(self):
|
|
if not self.ns.xmlpath and not self.testsuite_xml:
|
|
return
|
|
|
|
import xml.etree.ElementTree as ET
|
|
root = ET.Element("testsuites")
|
|
|
|
# Manually count the totals for the overall summary
|
|
totals = {'tests': 0, 'errors': 0, 'failures': 0}
|
|
for suite in self.testsuite_xml:
|
|
root.append(suite)
|
|
for k in totals:
|
|
try:
|
|
totals[k] += int(suite.get(k, 0))
|
|
except ValueError:
|
|
pass
|
|
|
|
for k, v in totals.items():
|
|
root.set(k, str(v))
|
|
|
|
xmlpath = os.path.join(os_helper.SAVEDCWD, self.ns.xmlpath)
|
|
with open(xmlpath, 'wb') as f:
|
|
for s in ET.tostringlist(root):
|
|
f.write(s)
|
|
|
|
def set_temp_dir(self):
|
|
if self.ns.tempdir:
|
|
self.tmp_dir = self.ns.tempdir
|
|
|
|
if not self.tmp_dir:
|
|
# When tests are run from the Python build directory, it is best practice
|
|
# to keep the test files in a subfolder. This eases the cleanup of leftover
|
|
# files using the "make distclean" command.
|
|
if sysconfig.is_python_build():
|
|
self.tmp_dir = sysconfig.get_config_var('abs_builddir')
|
|
if self.tmp_dir is None:
|
|
# bpo-30284: On Windows, only srcdir is available. Using
|
|
# abs_builddir mostly matters on UNIX when building Python
|
|
# out of the source tree, especially when the source tree
|
|
# is read only.
|
|
self.tmp_dir = sysconfig.get_config_var('srcdir')
|
|
self.tmp_dir = os.path.join(self.tmp_dir, 'build')
|
|
else:
|
|
self.tmp_dir = tempfile.gettempdir()
|
|
|
|
self.tmp_dir = os.path.abspath(self.tmp_dir)
|
|
|
|
def create_temp_dir(self):
|
|
os.makedirs(self.tmp_dir, exist_ok=True)
|
|
|
|
# Define a writable temp dir that will be used as cwd while running
|
|
# the tests. The name of the dir includes the pid to allow parallel
|
|
# testing (see the -j option).
|
|
pid = os.getpid()
|
|
if self.worker_test_name is not None:
|
|
test_cwd = 'test_python_worker_{}'.format(pid)
|
|
else:
|
|
test_cwd = 'test_python_{}'.format(pid)
|
|
test_cwd += os_helper.FS_NONASCII
|
|
test_cwd = os.path.join(self.tmp_dir, test_cwd)
|
|
return test_cwd
|
|
|
|
def cleanup(self):
|
|
import glob
|
|
|
|
path = os.path.join(glob.escape(self.tmp_dir), 'test_python_*')
|
|
print("Cleanup %s directory" % self.tmp_dir)
|
|
for name in glob.glob(path):
|
|
if os.path.isdir(name):
|
|
print("Remove directory: %s" % name)
|
|
os_helper.rmtree(name)
|
|
else:
|
|
print("Remove file: %s" % name)
|
|
os_helper.unlink(name)
|
|
|
|
def main(self, tests=None, **kwargs):
|
|
self.parse_args(kwargs)
|
|
|
|
self.set_temp_dir()
|
|
|
|
if self.ns.cleanup:
|
|
self.cleanup()
|
|
sys.exit(0)
|
|
|
|
test_cwd = self.create_temp_dir()
|
|
|
|
try:
|
|
# 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(test_cwd, quiet=True):
|
|
# When using multiprocessing, worker processes will use test_cwd
|
|
# as their parent temporary directory. So when the main process
|
|
# exit, it removes also subdirectories of worker processes.
|
|
self.ns.tempdir = test_cwd
|
|
|
|
self._main(tests, kwargs)
|
|
except SystemExit as exc:
|
|
# bpo-38203: Python can hang at exit in Py_Finalize(), especially
|
|
# on threading._shutdown() call: put a timeout
|
|
faulthandler.dump_traceback_later(EXIT_TIMEOUT, exit=True)
|
|
|
|
sys.exit(exc.code)
|
|
|
|
def getloadavg(self):
|
|
if self.win_load_tracker is not None:
|
|
return self.win_load_tracker.getloadavg()
|
|
|
|
if hasattr(os, 'getloadavg'):
|
|
return os.getloadavg()[0]
|
|
|
|
return None
|
|
|
|
def _main(self, tests, kwargs):
|
|
if self.worker_test_name is not None:
|
|
from test.libregrtest.runtest_mp import run_tests_worker
|
|
run_tests_worker(self.ns, self.worker_test_name)
|
|
|
|
if self.ns.wait:
|
|
input("Press any key to continue...")
|
|
|
|
support.PGO = self.ns.pgo
|
|
support.PGO_EXTENDED = self.ns.pgo_extended
|
|
|
|
setup_tests(self.ns)
|
|
|
|
self.find_tests(tests)
|
|
|
|
if self.ns.list_tests:
|
|
self.list_tests()
|
|
sys.exit(0)
|
|
|
|
if self.ns.list_cases:
|
|
self.list_cases()
|
|
sys.exit(0)
|
|
|
|
self.run_tests()
|
|
self.display_result()
|
|
|
|
if self.ns.verbose2 and self.bad:
|
|
self.rerun_failed_tests()
|
|
|
|
self.finalize()
|
|
|
|
self.save_xml_result()
|
|
|
|
if self.bad:
|
|
sys.exit(2)
|
|
if self.interrupted:
|
|
sys.exit(130)
|
|
if self.ns.fail_env_changed and self.environment_changed:
|
|
sys.exit(3)
|
|
sys.exit(0)
|
|
|
|
|
|
def main(tests=None, **kwargs):
|
|
"""Run the Python suite."""
|
|
Regrtest().main(tests=tests, **kwargs)
|