mirror of https://github.com/python/cpython
546 lines
19 KiB
Python
546 lines
19 KiB
Python
import faulthandler
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import json
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import os
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import re
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import sys
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import tempfile
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import sysconfig
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import signal
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import random
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import platform
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import traceback
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import unittest
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from test.libregrtest.runtest import (
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findtests, runtest, run_test_in_subprocess,
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STDTESTS, NOTTESTS,
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PASSED, FAILED, ENV_CHANGED, SKIPPED,
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RESOURCE_DENIED, INTERRUPTED, CHILD_ERROR)
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from test.libregrtest.refleak import warm_caches
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from test.libregrtest.cmdline import _parse_args
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from test import support
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try:
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import threading
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except ImportError:
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threading = None
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# Some times __path__ and __file__ are not absolute (e.g. while running from
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# Lib/) and, if we change the CWD to run the tests in a temporary dir, some
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# imports might fail. This affects only the modules imported before os.chdir().
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# These modules are searched first in sys.path[0] (so '' -- the CWD) and if
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# they are found in the CWD their __file__ and __path__ will be relative (this
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# happens before the chdir). All the modules imported after the chdir, are
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# not found in the CWD, and since the other paths in sys.path[1:] are absolute
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# (site.py absolutize them), the __file__ and __path__ will be absolute too.
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# Therefore it is necessary to absolutize manually the __file__ and __path__ of
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# the packages to prevent later imports to fail when the CWD is different.
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for module in sys.modules.values():
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if hasattr(module, '__path__'):
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module.__path__ = [os.path.abspath(path) for path in module.__path__]
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if hasattr(module, '__file__'):
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module.__file__ = os.path.abspath(module.__file__)
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# MacOSX (a.k.a. Darwin) has a default stack size that is too small
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# for deeply recursive regular expressions. We see this as crashes in
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# the Python test suite when running test_re.py and test_sre.py. The
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# fix is to set the stack limit to 2048.
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# This approach may also be useful for other Unixy platforms that
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# suffer from small default stack limits.
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if sys.platform == 'darwin':
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try:
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import resource
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except ImportError:
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pass
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else:
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soft, hard = resource.getrlimit(resource.RLIMIT_STACK)
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newsoft = min(hard, max(soft, 1024*2048))
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resource.setrlimit(resource.RLIMIT_STACK, (newsoft, hard))
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# When tests are run from the Python build directory, it is best practice
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# to keep the test files in a subfolder. This eases the cleanup of leftover
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# files using the "make distclean" command.
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if sysconfig.is_python_build():
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TEMPDIR = os.path.join(sysconfig.get_config_var('srcdir'), 'build')
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else:
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TEMPDIR = tempfile.gettempdir()
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TEMPDIR = os.path.abspath(TEMPDIR)
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def main(tests=None, **kwargs):
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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, findleaks, 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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# Display the Python traceback on fatal errors (e.g. segfault)
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faulthandler.enable(all_threads=True)
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# Display the Python traceback on SIGALRM or SIGUSR1 signal
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signals = []
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if hasattr(signal, 'SIGALRM'):
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signals.append(signal.SIGALRM)
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if hasattr(signal, 'SIGUSR1'):
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signals.append(signal.SIGUSR1)
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for signum in signals:
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faulthandler.register(signum, chain=True)
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replace_stdout()
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support.record_original_stdout(sys.stdout)
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ns = _parse_args(sys.argv[1:], **kwargs)
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if ns.huntrleaks:
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# Avoid false positives due to various caches
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# filling slowly with random data:
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warm_caches()
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if ns.memlimit is not None:
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support.set_memlimit(ns.memlimit)
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if ns.threshold is not None:
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import gc
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gc.set_threshold(ns.threshold)
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if ns.nowindows:
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import msvcrt
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msvcrt.SetErrorMode(msvcrt.SEM_FAILCRITICALERRORS|
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msvcrt.SEM_NOALIGNMENTFAULTEXCEPT|
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msvcrt.SEM_NOGPFAULTERRORBOX|
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msvcrt.SEM_NOOPENFILEERRORBOX)
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try:
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msvcrt.CrtSetReportMode
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except AttributeError:
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# release build
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pass
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else:
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for m in [msvcrt.CRT_WARN, msvcrt.CRT_ERROR, msvcrt.CRT_ASSERT]:
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msvcrt.CrtSetReportMode(m, msvcrt.CRTDBG_MODE_FILE)
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msvcrt.CrtSetReportFile(m, msvcrt.CRTDBG_FILE_STDERR)
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if ns.wait:
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input("Press any key to continue...")
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if ns.slaveargs is not None:
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args, kwargs = json.loads(ns.slaveargs)
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if kwargs.get('huntrleaks'):
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unittest.BaseTestSuite._cleanup = False
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try:
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result = runtest(*args, **kwargs)
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except KeyboardInterrupt:
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result = INTERRUPTED, ''
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except BaseException as e:
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traceback.print_exc()
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result = CHILD_ERROR, str(e)
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sys.stdout.flush()
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print() # Force a newline (just in case)
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print(json.dumps(result))
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sys.exit(0)
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good = []
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bad = []
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skipped = []
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resource_denieds = []
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environment_changed = []
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interrupted = False
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if ns.findleaks:
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try:
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import gc
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except ImportError:
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print('No GC available, disabling findleaks.')
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ns.findleaks = False
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else:
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# Uncomment the line below to report garbage that is not
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# freeable by reference counting alone. By default only
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# garbage that is not collectable by the GC is reported.
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#gc.set_debug(gc.DEBUG_SAVEALL)
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found_garbage = []
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if ns.huntrleaks:
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unittest.BaseTestSuite._cleanup = False
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if ns.single:
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filename = os.path.join(TEMPDIR, 'pynexttest')
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try:
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with open(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 ns.fromfile:
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tests = []
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with open(os.path.join(support.SAVEDCWD, ns.fromfile)) as fp:
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count_pat = re.compile(r'\[\s*\d+/\s*\d+\]')
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for line in fp:
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line = count_pat.sub('', line)
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guts = line.split() # assuming no test has whitespace in its name
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if guts and not guts[0].startswith('#'):
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tests.extend(guts)
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# Strip .py extensions.
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removepy(ns.args)
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removepy(tests)
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stdtests = STDTESTS[:]
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nottests = NOTTESTS.copy()
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if ns.exclude:
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for arg in 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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ns.args = []
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# For a partial run, we do not need to clutter the output.
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if ns.verbose or ns.header or not (ns.quiet or ns.single or tests or ns.args):
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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("== ", "hash algorithm:", sys.hash_info.algorithm,
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"64bit" if sys.maxsize > 2**32 else "32bit")
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print("== ", os.getcwd())
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print("Testing with flags:", sys.flags)
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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 ns.testdir:
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alltests = findtests(ns.testdir, list(), set())
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else:
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alltests = findtests(ns.testdir, stdtests, nottests)
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selected = tests or ns.args or alltests
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if ns.single:
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selected = selected[:1]
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try:
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next_single_test = alltests[alltests.index(selected[0])+1]
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except IndexError:
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next_single_test = None
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# Remove all the selected tests that precede start if it's set.
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if ns.start:
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try:
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del selected[:selected.index(ns.start)]
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except ValueError:
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print("Couldn't find starting test (%s), using all tests" % ns.start)
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if ns.randomize:
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if ns.random_seed is None:
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ns.random_seed = random.randrange(10000000)
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random.seed(ns.random_seed)
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print("Using random seed", ns.random_seed)
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random.shuffle(selected)
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if ns.trace:
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import trace, tempfile
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tracer = trace.Trace(trace=False, count=True)
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test_times = []
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support.verbose = ns.verbose # Tell tests to be moderately quiet
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support.use_resources = ns.use_resources
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save_modules = sys.modules.keys()
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def accumulate_result(test, result):
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ok, test_time = result
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test_times.append((test_time, test))
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if ok == PASSED:
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good.append(test)
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elif ok == FAILED:
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bad.append(test)
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elif ok == ENV_CHANGED:
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environment_changed.append(test)
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elif ok == SKIPPED:
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skipped.append(test)
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elif ok == RESOURCE_DENIED:
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skipped.append(test)
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resource_denieds.append(test)
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if ns.forever:
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def test_forever(tests=list(selected)):
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while True:
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for test in tests:
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yield test
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if bad:
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return
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tests = test_forever()
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test_count = ''
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test_count_width = 3
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else:
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tests = iter(selected)
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test_count = '/{}'.format(len(selected))
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test_count_width = len(test_count) - 1
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if ns.use_mp:
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try:
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from threading import Thread
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except ImportError:
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print("Multiprocess option requires thread support")
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sys.exit(2)
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from queue import Queue
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debug_output_pat = re.compile(r"\[\d+ refs, \d+ blocks\]$")
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output = Queue()
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pending = MultiprocessTests(tests)
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def work():
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# A worker thread.
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try:
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while True:
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try:
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test = next(pending)
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except StopIteration:
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output.put((None, None, None, None))
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return
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retcode, stdout, stderr = run_test_in_subprocess(test, ns)
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# Strip last refcount output line if it exists, since it
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# comes from the shutdown of the interpreter in the subcommand.
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stderr = debug_output_pat.sub("", stderr)
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stdout, _, result = stdout.strip().rpartition("\n")
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if retcode != 0:
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result = (CHILD_ERROR, "Exit code %s" % retcode)
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output.put((test, stdout.rstrip(), stderr.rstrip(), result))
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return
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if not result:
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output.put((None, None, None, None))
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return
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result = json.loads(result)
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output.put((test, stdout.rstrip(), stderr.rstrip(), result))
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except BaseException:
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output.put((None, None, None, None))
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raise
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workers = [Thread(target=work) for i in range(ns.use_mp)]
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for worker in workers:
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worker.start()
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finished = 0
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test_index = 1
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try:
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while finished < ns.use_mp:
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test, stdout, stderr, result = output.get()
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if test is None:
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finished += 1
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continue
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accumulate_result(test, result)
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if not ns.quiet:
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fmt = "[{1:{0}}{2}/{3}] {4}" if bad else "[{1:{0}}{2}] {4}"
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print(fmt.format(
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test_count_width, test_index, test_count,
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len(bad), test))
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if stdout:
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print(stdout)
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if stderr:
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print(stderr, file=sys.stderr)
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sys.stdout.flush()
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sys.stderr.flush()
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if result[0] == INTERRUPTED:
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raise KeyboardInterrupt
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if result[0] == CHILD_ERROR:
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raise Exception("Child error on {}: {}".format(test, result[1]))
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test_index += 1
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except KeyboardInterrupt:
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interrupted = True
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pending.interrupted = True
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for worker in workers:
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worker.join()
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else:
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for test_index, test in enumerate(tests, 1):
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if not ns.quiet:
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fmt = "[{1:{0}}{2}/{3}] {4}" if bad else "[{1:{0}}{2}] {4}"
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print(fmt.format(
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test_count_width, test_index, test_count, len(bad), test))
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sys.stdout.flush()
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if ns.trace:
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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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tracer.runctx('runtest(test, ns.verbose, ns.quiet, timeout=ns.timeout)',
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globals=globals(), locals=vars())
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else:
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try:
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result = runtest(test, ns.verbose, ns.quiet,
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ns.huntrleaks,
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output_on_failure=ns.verbose3,
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timeout=ns.timeout, failfast=ns.failfast,
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match_tests=ns.match_tests)
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accumulate_result(test, result)
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except KeyboardInterrupt:
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interrupted = True
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break
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if ns.findleaks:
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gc.collect()
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if gc.garbage:
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print("Warning: test created", len(gc.garbage), end=' ')
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print("uncollectable object(s).")
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# move the uncollectable objects somewhere so we don't see
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# them again
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found_garbage.extend(gc.garbage)
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del gc.garbage[:]
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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 interrupted:
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# print a newline after ^C
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print()
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print("Test suite interrupted by signal SIGINT.")
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omitted = set(selected) - set(good) - set(bad) - set(skipped)
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print(count(len(omitted), "test"), "omitted:")
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printlist(omitted)
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if good and not ns.quiet:
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if not bad and not skipped and not interrupted and len(good) > 1:
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print("All", end=' ')
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print(count(len(good), "test"), "OK.")
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if ns.print_slow:
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test_times.sort(reverse=True)
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print("10 slowest tests:")
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for time, test in test_times[:10]:
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print("%s: %.1fs" % (test, time))
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if bad:
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print(count(len(bad), "test"), "failed:")
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printlist(bad)
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if environment_changed:
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print("{} altered the execution environment:".format(
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count(len(environment_changed), "test")))
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printlist(environment_changed)
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if skipped and not ns.quiet:
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print(count(len(skipped), "test"), "skipped:")
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printlist(skipped)
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if ns.verbose2 and bad:
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print("Re-running failed tests in verbose mode")
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for test in bad[:]:
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print("Re-running test %r in verbose mode" % test)
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sys.stdout.flush()
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try:
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ns.verbose = True
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ok = runtest(test, True, ns.quiet, ns.huntrleaks,
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timeout=ns.timeout)
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except KeyboardInterrupt:
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# print a newline separate from the ^C
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print()
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break
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else:
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if ok[0] in {PASSED, ENV_CHANGED, SKIPPED, RESOURCE_DENIED}:
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bad.remove(test)
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else:
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if bad:
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print(count(len(bad), 'test'), "failed again:")
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printlist(bad)
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if ns.single:
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if next_single_test:
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with open(filename, 'w') as fp:
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fp.write(next_single_test + '\n')
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else:
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os.unlink(filename)
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if ns.trace:
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r = tracer.results()
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r.write_results(show_missing=True, summary=True, coverdir=ns.coverdir)
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if ns.runleaks:
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os.system("leaks %d" % os.getpid())
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sys.exit(len(bad) > 0 or interrupted)
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# We do not use a generator so multiple threads can call next().
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class MultiprocessTests(object):
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"""A thread-safe iterator over tests for multiprocess mode."""
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def __init__(self, tests):
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self.interrupted = False
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self.lock = threading.Lock()
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self.tests = tests
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def __iter__(self):
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return self
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def __next__(self):
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with self.lock:
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if self.interrupted:
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raise StopIteration('tests interrupted')
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return next(self.tests)
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def replace_stdout():
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"""Set stdout encoder error handler to backslashreplace (as stderr error
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handler) to avoid UnicodeEncodeError when printing a traceback"""
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import atexit
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stdout = sys.stdout
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sys.stdout = open(stdout.fileno(), 'w',
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encoding=stdout.encoding,
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errors="backslashreplace",
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closefd=False,
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newline='\n')
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def restore_stdout():
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sys.stdout.close()
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sys.stdout = stdout
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atexit.register(restore_stdout)
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def removepy(names):
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if not names:
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return
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for idx, name in enumerate(names):
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basename, ext = os.path.splitext(name)
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if ext == '.py':
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names[idx] = basename
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def count(n, word):
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if n == 1:
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return "%d %s" % (n, word)
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else:
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return "%d %ss" % (n, word)
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def printlist(x, width=70, indent=4):
|
|
"""Print the elements of iterable x to stdout.
|
|
|
|
Optional arg width (default 70) is the maximum line length.
|
|
Optional arg indent (default 4) is the number of blanks with which to
|
|
begin each line.
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|
"""
|
|
|
|
from textwrap import fill
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|
blanks = ' ' * indent
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|
# Print the sorted list: 'x' may be a '--random' list or a set()
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|
print(fill(' '.join(str(elt) for elt in sorted(x)), width,
|
|
initial_indent=blanks, subsequent_indent=blanks))
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|
|
|
|
|
def main_in_temp_cwd():
|
|
"""Run main() in a temporary working directory."""
|
|
if sysconfig.is_python_build():
|
|
try:
|
|
os.mkdir(TEMPDIR)
|
|
except FileExistsError:
|
|
pass
|
|
|
|
# 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).
|
|
test_cwd = 'test_python_{}'.format(os.getpid())
|
|
test_cwd = os.path.join(TEMPDIR, test_cwd)
|
|
|
|
# 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 support.SAVEDCWD.
|
|
with support.temp_cwd(test_cwd, quiet=True):
|
|
main()
|