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cpython/Lib/test/regrtest.py
R. David Murray 35768ad4f5 Merged revisions 76276 via svnmerge from 
svn+ssh://pythondev@svn.python.org/python/trunk

........
  r76276 | r.david.murray | 2009-11-14 19:04:32 -0500 (Sat, 14 Nov 2009) | 3 lines

  Issue 7324: add a sanity check to regrtest argument parsing to
  catch the case of an option with no handler.
........
2009-11-15 00:23:21 +00:00

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#! /usr/bin/env python
"""Regression test.
This will find all modules whose name is "test_*" in the test
directory, and run them. Various command line options provide
additional facilities.
Command line options:
-h/--help -- print this text and exit
Verbosity
-v/--verbose -- run tests in verbose mode with output to stdout
-w/--verbose2 -- re-run failed tests in verbose mode
-W/--verbose3 -- re-run failed tests in verbose mode immediately
-d/--debug -- print traceback for failed tests
-q/--quiet -- don't print anything except if a test fails
-S/--slow -- print the slowest 10 tests
Selecting tests
-r/--random -- randomize test execution order
-f/--fromfile -- read names of tests to run from a file (see below)
-x/--exclude -- arguments are tests to *exclude*
-s/--single -- run only a single test (see below)
-u/--use RES1,RES2,...
-- specify which special resource intensive tests to run
-M/--memlimit LIMIT
-- run very large memory-consuming tests
Special runs
-l/--findleaks -- if GC is available detect tests that leak memory
-L/--runleaks -- run the leaks(1) command just before exit
-R/--huntrleaks RUNCOUNTS
-- search for reference leaks (needs debug build, v. slow)
-j/--multiprocess PROCESSES
-- run PROCESSES processes at once
-T/--coverage -- turn on code coverage using the trace module
-D/--coverdir DIRECTORY
-- Directory where coverage files are put
-N/--nocoverdir -- Put coverage files alongside modules
-t/--threshold THRESHOLD
-- call gc.set_threshold(THRESHOLD)
-n/--nowindows -- suppress error message boxes on Windows
-F/--forever -- run the selected tests in a loop, until an error happens
If non-option arguments are present, they are names for tests to run,
unless -x is given, in which case they are names for tests not to run.
If no test names are given, all tests are run.
-r randomizes test execution order. You can use --randseed=int to provide a
int seed value for the randomizer; this is useful for reproducing troublesome
test orders.
-T turns on code coverage tracing with the trace module.
-D specifies the directory where coverage files are put.
-N Put coverage files alongside modules.
-s means to run only a single test and exit. This is useful when
doing memory analysis on the Python interpreter (which tend to consume
too many resources to run the full regression test non-stop). The
file /tmp/pynexttest is read to find the next test to run. If this
file is missing, the first test_*.py file in testdir or on the command
line is used. (actually tempfile.gettempdir() is used instead of
/tmp).
-S is used to continue running tests after an aborted run. It will
maintain the order a standard run (ie, this assumes -r is not used).
This is useful after the tests have prematurely stopped for some external
reason and you want to start running from where you left off rather
than starting from the beginning.
-f reads the names of tests from the file given as f's argument, one
or more test names per line. Whitespace is ignored. Blank lines and
lines beginning with '#' are ignored. This is especially useful for
whittling down failures involving interactions among tests.
-L causes the leaks(1) command to be run just before exit if it exists.
leaks(1) is available on Mac OS X and presumably on some other
FreeBSD-derived systems.
-R runs each test several times and examines sys.gettotalrefcount() to
see if the test appears to be leaking references. The argument should
be of the form stab:run:fname where 'stab' is the number of times the
test is run to let gettotalrefcount settle down, 'run' is the number
of times further it is run and 'fname' is the name of the file the
reports are written to. These parameters all have defaults (5, 4 and
"reflog.txt" respectively), and the minimal invocation is '-R :'.
-M runs tests that require an exorbitant amount of memory. These tests
typically try to ascertain containers keep working when containing more than
2 billion objects, which only works on 64-bit systems. There are also some
tests that try to exhaust the address space of the process, which only makes
sense on 32-bit systems with at least 2Gb of memory. The passed-in memlimit,
which is a string in the form of '2.5Gb', determines howmuch memory the
tests will limit themselves to (but they may go slightly over.) The number
shouldn't be more memory than the machine has (including swap memory). You
should also keep in mind that swap memory is generally much, much slower
than RAM, and setting memlimit to all available RAM or higher will heavily
tax the machine. On the other hand, it is no use running these tests with a
limit of less than 2.5Gb, and many require more than 20Gb. Tests that expect
to use more than memlimit memory will be skipped. The big-memory tests
generally run very, very long.
-u is used to specify which special resource intensive tests to run,
such as those requiring large file support or network connectivity.
The argument is a comma-separated list of words indicating the
resources to test. Currently only the following are defined:
all - Enable all special resources.
audio - Tests that use the audio device. (There are known
cases of broken audio drivers that can crash Python or
even the Linux kernel.)
curses - Tests that use curses and will modify the terminal's
state and output modes.
lib2to3 - Run the tests for 2to3 (They take a while.)
largefile - It is okay to run some test that may create huge
files. These tests can take a long time and may
consume >2GB of disk space temporarily.
network - It is okay to run tests that use external network
resource, e.g. testing SSL support for sockets.
decimal - Test the decimal module against a large suite that
verifies compliance with standards.
compiler - Allow test_tokenize to verify round-trip lexing on
every file in the test library.
subprocess Run all tests for the subprocess module.
urlfetch - It is okay to download files required on testing.
gui - Run tests that require a running GUI.
To enable all resources except one, use '-uall,-<resource>'. For
example, to run all the tests except for the gui tests, give the
option '-uall,-gui'.
"""
import getopt
import itertools
import json
import os
import random
import re
import io
import sys
import time
import traceback
import warnings
import unittest
from inspect import isabstract
# I see no other way to suppress these warnings;
# putting them in test_grammar.py has no effect:
warnings.filterwarnings("ignore", "hex/oct constants", FutureWarning,
".*test.test_grammar$")
if sys.maxsize > 0x7fffffff:
# Also suppress them in <string>, because for 64-bit platforms,
# that's where test_grammar.py hides them.
warnings.filterwarnings("ignore", "hex/oct constants", FutureWarning,
"<string>")
# Ignore ImportWarnings that only occur in the source tree,
# (because of modules with the same name as source-directories in Modules/)
for mod in ("ctypes", "gzip", "zipfile", "tarfile", "encodings.zlib_codec",
"test.test_zipimport", "test.test_zlib", "test.test_zipfile",
"test.test_codecs", "test.string_tests"):
warnings.filterwarnings(module=".*%s$" % (mod,),
action="ignore", category=ImportWarning)
# MacOSX (a.k.a. Darwin) has a default stack size that is too small
# for deeply recursive regular expressions. We see this as crashes in
# the Python test suite when running test_re.py and test_sre.py. The
# fix is to set the stack limit to 2048.
# This approach may also be useful for other Unixy platforms that
# suffer from small default stack limits.
if sys.platform == 'darwin':
try:
import resource
except ImportError:
pass
else:
soft, hard = resource.getrlimit(resource.RLIMIT_STACK)
newsoft = min(hard, max(soft, 1024*2048))
resource.setrlimit(resource.RLIMIT_STACK, (newsoft, hard))
# Test result constants.
PASSED = 1
FAILED = 0
ENV_CHANGED = -1
SKIPPED = -2
RESOURCE_DENIED = -3
INTERRUPTED = -4
from test import support
RESOURCE_NAMES = ('audio', 'curses', 'largefile', 'network',
'decimal', 'compiler', 'subprocess', 'urlfetch', 'gui')
def usage(msg):
print(msg, file=sys.stderr)
print("Use --help for usage", file=sys.stderr)
sys.exit(2)
def main(tests=None, testdir=None, verbose=0, quiet=False,
exclude=False, single=False, randomize=False, fromfile=None,
findleaks=False, use_resources=None, trace=False, coverdir='coverage',
runleaks=False, huntrleaks=False, verbose2=False, print_slow=False,
random_seed=None, use_mp=None, verbose3=False, forever=False):
"""Execute a test suite.
This also parses command-line options and modifies its behavior
accordingly.
tests -- a list of strings containing test names (optional)
testdir -- the directory in which to look for tests (optional)
Users other than the Python test suite will certainly want to
specify testdir; if it's omitted, the directory containing the
Python test suite is searched for.
If the tests argument is omitted, the tests listed on the
command-line will be used. If that's empty, too, then all *.py
files beginning with test_ will be used.
The other default arguments (verbose, quiet, exclude,
single, randomize, findleaks, use_resources, trace, coverdir,
print_slow, and random_seed) allow programmers calling main()
directly to set the values that would normally be set by flags
on the command line.
"""
support.record_original_stdout(sys.stdout)
try:
opts, args = getopt.getopt(sys.argv[1:], 'hvqxsSrf:lu:t:TD:NLR:FwWM:nj:',
['help', 'verbose', 'verbose2', 'verbose3', 'quiet',
'exclude', 'single', 'slow', 'random', 'fromfile', 'findleaks',
'use=', 'threshold=', 'trace', 'coverdir=', 'nocoverdir',
'runleaks', 'huntrleaks=', 'memlimit=', 'randseed=',
'multiprocess=', 'slaveargs=', 'forever', 'debug', 'start=',
'nowindows'])
except getopt.error as msg:
usage(msg)
# Defaults
if random_seed is None:
random_seed = random.randrange(10000000)
if use_resources is None:
use_resources = []
debug = False
start = None
for o, a in opts:
if o in ('-h', '--help'):
print(__doc__)
return
elif o in ('-v', '--verbose'):
verbose += 1
elif o in ('-w', '--verbose2'):
verbose2 = True
elif o in ('-d', '--debug'):
debug = True
elif o in ('-W', '--verbose3'):
verbose3 = True
elif o in ('-q', '--quiet'):
quiet = True;
verbose = 0
elif o in ('-x', '--exclude'):
exclude = True
elif o in ('-S', '--start'):
start = a
elif o in ('-s', '--single'):
single = True
elif o in ('-S', '--slow'):
print_slow = True
elif o in ('-r', '--randomize'):
randomize = True
elif o == '--randseed':
random_seed = int(a)
elif o in ('-f', '--fromfile'):
fromfile = a
elif o in ('-l', '--findleaks'):
findleaks = True
elif o in ('-L', '--runleaks'):
runleaks = True
elif o in ('-t', '--threshold'):
import gc
gc.set_threshold(int(a))
elif o in ('-T', '--coverage'):
trace = True
elif o in ('-D', '--coverdir'):
coverdir = os.path.join(os.getcwd(), a)
elif o in ('-N', '--nocoverdir'):
coverdir = None
elif o in ('-R', '--huntrleaks'):
huntrleaks = a.split(':')
if len(huntrleaks) not in (2, 3):
print(a, huntrleaks)
usage('-R takes 2 or 3 colon-separated arguments')
if not huntrleaks[0]:
huntrleaks[0] = 5
else:
huntrleaks[0] = int(huntrleaks[0])
if not huntrleaks[1]:
huntrleaks[1] = 4
else:
huntrleaks[1] = int(huntrleaks[1])
if len(huntrleaks) == 2 or not huntrleaks[2]:
huntrleaks[2:] = ["reflog.txt"]
# Avoid false positives due to the character cache in
# stringobject.c filling slowly with random data
warm_char_cache()
elif o in ('-M', '--memlimit'):
support.set_memlimit(a)
elif o in ('-u', '--use'):
u = [x.lower() for x in a.split(',')]
for r in u:
if r == 'all':
use_resources[:] = RESOURCE_NAMES
continue
remove = False
if r[0] == '-':
remove = True
r = r[1:]
if r not in RESOURCE_NAMES:
usage('Invalid -u/--use option: ' + a)
if remove:
if r in use_resources:
use_resources.remove(r)
elif r not in use_resources:
use_resources.append(r)
elif o in ('-n', '--nowindows'):
import msvcrt
msvcrt.SetErrorMode(msvcrt.SEM_FAILCRITICALERRORS|
msvcrt.SEM_NOALIGNMENTFAULTEXCEPT|
msvcrt.SEM_NOGPFAULTERRORBOX|
msvcrt.SEM_NOOPENFILEERRORBOX)
try:
msvcrt.CrtSetReportMode
except AttributeError:
# release build
pass
else:
for m in [msvcrt.CRT_WARN, msvcrt.CRT_ERROR, msvcrt.CRT_ASSERT]:
msvcrt.CrtSetReportMode(m, msvcrt.CRTDBG_MODE_FILE)
msvcrt.CrtSetReportFile(m, msvcrt.CRTDBG_FILE_STDERR)
elif o in ('-F', '--forever'):
forever = True
elif o in ('-j', '--multiprocess'):
use_mp = int(a)
elif o == '--slaveargs':
args, kwargs = json.loads(a)
try:
result = runtest(*args, **kwargs)
except BaseException as e:
result = INTERRUPTED, e.__class__.__name__
sys.stdout.flush()
print() # Force a newline (just in case)
print(json.dumps(result))
sys.exit(0)
else:
print(("No handler for option {}. Please report this as a bug "
"at http://bugs.python.org.").format(o), file=sys.stderr)
sys.exit(1)
if single and fromfile:
usage("-s and -f don't go together!")
if use_mp and trace:
usage(2, "-T and -j don't go together!")
if use_mp and findleaks:
usage(2, "-l and -j don't go together!")
good = []
bad = []
skipped = []
resource_denieds = []
environment_changed = []
if findleaks:
try:
import gc
except ImportError:
print('No GC available, disabling findleaks.')
findleaks = False
else:
# Uncomment the line below to report garbage that is not
# freeable by reference counting alone. By default only
# garbage that is not collectable by the GC is reported.
#gc.set_debug(gc.DEBUG_SAVEALL)
found_garbage = []
if single:
from tempfile import gettempdir
filename = os.path.join(gettempdir(), 'pynexttest')
try:
fp = open(filename, 'r')
next_test = fp.read().strip()
tests = [next_test]
fp.close()
except IOError:
pass
if fromfile:
tests = []
fp = open(fromfile)
for line in fp:
guts = line.split() # assuming no test has whitespace in its name
if guts and not guts[0].startswith('#'):
tests.extend(guts)
fp.close()
# Strip .py extensions.
if args:
args = list(map(removepy, args))
if tests:
tests = list(map(removepy, tests))
stdtests = STDTESTS[:]
nottests = NOTTESTS.copy()
if exclude:
for arg in args:
if arg in stdtests:
stdtests.remove(arg)
nottests.add(arg)
args = []
tests = tests or args or findtests(testdir, stdtests, nottests)
if single:
tests = tests[:1]
# Remove all the tests that precede start if it's set.
if start:
try:
del tests[:tests.index(start)]
except ValueError:
print("Couldn't find starting test (%s), using all tests" % start)
if randomize:
random.seed(random_seed)
print("Using random seed", random_seed)
random.shuffle(tests)
if trace:
import trace, tempfile
tracer = trace.Trace(ignoredirs=[sys.prefix, sys.exec_prefix,
tempfile.gettempdir()],
trace=False, count=True)
test_times = []
support.verbose = verbose # Tell tests to be moderately quiet
support.use_resources = use_resources
save_modules = sys.modules.keys()
def accumulate_result(test, result):
ok, test_time = result
test_times.append((test_time, test))
if ok == PASSED:
good.append(test)
elif ok == FAILED:
bad.append(test)
elif ok == ENV_CHANGED:
bad.append(test)
environment_changed.append(test)
elif ok == SKIPPED:
skipped.append(test)
elif ok == RESOURCE_DENIED:
skipped.append(test)
resource_denieds.append(test)
if forever:
def test_forever(tests=list(tests)):
while True:
for test in tests:
yield test
if bad:
return
tests = test_forever()
else:
tests = iter(tests)
if use_mp:
from threading import Thread
from queue import Queue, Empty
from subprocess import Popen, PIPE, STDOUT
from collections import deque
debug_output_pat = re.compile(r"\[\d+ refs\]$")
pending = deque()
output = Queue()
def tests_and_args():
for test in tests:
args_tuple = (
(test, verbose, quiet, testdir),
dict(huntrleaks=huntrleaks, use_resources=use_resources,
debug=debug)
)
yield (test, args_tuple)
pending = tests_and_args()
def work():
# A worker thread.
try:
while True:
try:
test, args_tuple = next(pending)
except StopIteration:
output.put((None, None, None, None))
return
# -E is needed by some tests, e.g. test_import
popen = Popen([sys.executable, '-E', '-m', 'test.regrtest',
'--slaveargs', json.dumps(args_tuple)],
stdout=PIPE, stderr=PIPE,
universal_newlines=True, close_fds=True)
stdout, stderr = popen.communicate()
# Strip last refcount output line if it exists, since it
# comes from the shutdown of the interpreter in the subcommand.
stderr = debug_output_pat.sub("", stderr)
stdout, _, result = stdout.strip().rpartition("\n")
if not result:
output.put((None, None, None, None))
return
result = json.loads(result)
if not quiet:
stdout = test+'\n'+stdout
output.put((test, stdout.rstrip(), stderr.rstrip(), result))
except BaseException:
output.put((None, None, None, None))
raise
workers = [Thread(target=work) for i in range(use_mp)]
for worker in workers:
worker.start()
finished = 0
try:
while finished < use_mp:
test, stdout, stderr, result = output.get()
if test is None:
finished += 1
continue
if stdout:
print(stdout)
if stderr:
print(stderr, file=sys.stderr)
if result[0] == INTERRUPTED:
assert result[1] == 'KeyboardInterrupt'
raise KeyboardInterrupt # What else?
accumulate_result(test, result)
except KeyboardInterrupt:
pending.close()
for worker in workers:
worker.join()
else:
for test in tests:
if not quiet:
print(test)
sys.stdout.flush()
if trace:
# If we're tracing code coverage, then we don't exit with status
# if on a false return value from main.
tracer.runctx('runtest(test, verbose, quiet, testdir)',
globals=globals(), locals=vars())
else:
try:
result = runtest(test, verbose, quiet,
testdir, huntrleaks, debug)
accumulate_result(test, result)
if verbose3 and result[0] == FAILED:
print("Re-running test {} in verbose mode".format(test))
runtest(test, True, quiet, testdir, huntrleaks, debug)
except KeyboardInterrupt:
# print a newline separate from the ^C
print()
break
except:
raise
if findleaks:
gc.collect()
if gc.garbage:
print("Warning: test created", len(gc.garbage), end=' ')
print("uncollectable object(s).")
# move the uncollectable objects somewhere so we don't see
# them again
found_garbage.extend(gc.garbage)
del gc.garbage[:]
# Unload the newly imported modules (best effort finalization)
for module in sys.modules.keys():
if module not in save_modules and module.startswith("test."):
support.unload(module)
# The lists won't be sorted if running with -r
good.sort()
bad.sort()
skipped.sort()
environment_changed.sort()
if good and not quiet:
if not bad and not skipped and len(good) > 1:
print("All", end=' ')
print(count(len(good), "test"), "OK.")
if print_slow:
test_times.sort(reverse=True)
print("10 slowest tests:")
for time, test in test_times[:10]:
print("%s: %.1fs" % (test, time))
if bad:
bad = sorted(set(bad) - set(environment_changed))
if bad:
print(count(len(bad), "test"), "failed:")
printlist(bad)
if environment_changed:
print("{} altered the execution environment:".format(
count(len(environment_changed), "test")))
printlist(environment_changed)
if skipped and not quiet:
print(count(len(skipped), "test"), "skipped:")
printlist(skipped)
e = _ExpectedSkips()
plat = sys.platform
if e.isvalid():
surprise = set(skipped) - e.getexpected() - set(resource_denieds)
if surprise:
print(count(len(surprise), "skip"), \
"unexpected on", plat + ":")
printlist(surprise)
else:
print("Those skips are all expected on", plat + ".")
else:
print("Ask someone to teach regrtest.py about which tests are")
print("expected to get skipped on", plat + ".")
if verbose2 and bad:
print("Re-running failed tests in verbose mode")
for test in bad:
print("Re-running test %r in verbose mode" % test)
sys.stdout.flush()
try:
verbose = True
ok = runtest(test, True, quiet, testdir,
huntrleaks, debug)
except KeyboardInterrupt:
# print a newline separate from the ^C
print()
break
except:
raise
if single:
alltests = findtests(testdir, stdtests, nottests)
for i in range(len(alltests)):
if tests[0] == alltests[i]:
if i == len(alltests) - 1:
os.unlink(filename)
else:
fp = open(filename, 'w')
fp.write(alltests[i+1] + '\n')
fp.close()
break
else:
os.unlink(filename)
if trace:
r = tracer.results()
r.write_results(show_missing=True, summary=True, coverdir=coverdir)
if runleaks:
os.system("leaks %d" % os.getpid())
sys.exit(len(bad) > 0)
STDTESTS = [
'test_grammar',
'test_opcodes',
'test_dict',
'test_builtin',
'test_exceptions',
'test_types',
'test_unittest',
'test_doctest',
'test_doctest2',
]
NOTTESTS = {
'test_future1',
'test_future2',
}
def findtests(testdir=None, stdtests=STDTESTS, nottests=NOTTESTS):
"""Return a list of all applicable test modules."""
if not testdir: testdir = findtestdir()
names = os.listdir(testdir)
tests = []
for name in names:
if name[:5] == "test_" and name[-3:] == ".py":
modname = name[:-3]
if modname not in stdtests and modname not in nottests:
tests.append(modname)
tests.sort()
return stdtests + tests
def runtest(test, verbose, quiet,
testdir=None, huntrleaks=False, debug=False, use_resources=None):
"""Run a single test.
test -- the name of the test
verbose -- if true, print more messages
quiet -- if true, don't print 'skipped' messages (probably redundant)
test_times -- a list of (time, test_name) pairs
testdir -- test directory
huntrleaks -- run multiple times to test for leaks; requires a debug
build; a triple corresponding to -R's three arguments
Returns one of the test result constants:
INTERRUPTED KeyboardInterrupt when run under -j
RESOURCE_DENIED test skipped because resource denied
SKIPPED test skipped for some other reason
ENV_CHANGED test failed because it changed the execution environment
FAILED test failed
PASSED test passed
"""
support.verbose = verbose # Tell tests to be moderately quiet
if use_resources is not None:
support.use_resources = use_resources
try:
return runtest_inner(test, verbose, quiet,
testdir, huntrleaks, debug)
finally:
cleanup_test_droppings(test, verbose)
# Unit tests are supposed to leave the execution environment unchanged
# once they complete. But sometimes tests have bugs, especially when
# tests fail, and the changes to environment go on to mess up other
# tests. This can cause issues with buildbot stability, since tests
# are run in random order and so problems may appear to come and go.
# There are a few things we can save and restore to mitigate this, and
# the following context manager handles this task.
class saved_test_environment:
"""Save bits of the test environment and restore them at block exit.
with saved_test_environment(testname, verbose, quiet):
#stuff
Unless quiet is True, a warning is printed to stderr if any of
the saved items was changed by the test. The attribute 'changed'
is initially False, but is set to True if a change is detected.
If verbose is more than 1, the before and after state of changed
items is also printed.
"""
changed = False
def __init__(self, testname, verbose=0, quiet=False):
self.testname = testname
self.verbose = verbose
self.quiet = quiet
# To add things to save and restore, add a name XXX to the resources list
# and add corresponding get_XXX/restore_XXX functions. get_XXX should
# return the value to be saved and compared against a second call to the
# get function when test execution completes. restore_XXX should accept
# the saved value and restore the resource using it. It will be called if
# and only if a change in the value is detected.
#
# Note: XXX will have any '.' replaced with '_' characters when determining
# the corresponding method names.
resources = ('sys.argv', 'cwd', 'sys.stdin', 'sys.stdout', 'sys.stderr',
'os.environ', 'sys.path')
def get_sys_argv(self):
return id(sys.argv), sys.argv, sys.argv[:]
def restore_sys_argv(self, saved_argv):
sys.argv = saved_argv[1]
sys.argv[:] = saved_argv[2]
def get_cwd(self):
return os.getcwd()
def restore_cwd(self, saved_cwd):
os.chdir(saved_cwd)
def get_sys_stdout(self):
return sys.stdout
def restore_sys_stdout(self, saved_stdout):
sys.stdout = saved_stdout
def get_sys_stderr(self):
return sys.stderr
def restore_sys_stderr(self, saved_stderr):
sys.stderr = saved_stderr
def get_sys_stdin(self):
return sys.stdin
def restore_sys_stdin(self, saved_stdin):
sys.stdin = saved_stdin
def get_os_environ(self):
return id(os.environ), os.environ, dict(os.environ)
def restore_os_environ(self, saved_environ):
os.environ = saved_environ[1]
os.environ.clear()
os.environ.update(saved_environ[2])
def get_sys_path(self):
return id(sys.path), sys.path, sys.path[:]
def restore_sys_path(self, saved_path):
sys.path = saved_path[1]
sys.path[:] = saved_path[2]
def resource_info(self):
for name in self.resources:
method_suffix = name.replace('.', '_')
get_name = 'get_' + method_suffix
restore_name = 'restore_' + method_suffix
yield name, getattr(self, get_name), getattr(self, restore_name)
def __enter__(self):
self.saved_values = dict((name, get()) for name, get, restore
in self.resource_info())
return self
def __exit__(self, exc_type, exc_val, exc_tb):
for name, get, restore in self.resource_info():
current = get()
original = self.saved_values[name]
# Check for changes to the resource's value
if current != original:
self.changed = True
restore(original)
if not self.quiet:
print("Warning -- {} was modified by {}".format(
name, self.testname),
file=sys.stderr)
if self.verbose > 1:
print(" Before: {}\n After: {} ".format(
original, current),
file=sys.stderr)
return False
def runtest_inner(test, verbose, quiet,
testdir=None, huntrleaks=False, debug=False):
support.unload(test)
if not testdir:
testdir = findtestdir()
test_time = 0.0
refleak = False # True if the test leaked references.
try:
if test.startswith('test.'):
abstest = test
else:
# Always import it from the test package
abstest = 'test.' + test
with saved_test_environment(test, verbose, quiet) as environment:
start_time = time.time()
the_package = __import__(abstest, globals(), locals(), [])
the_module = getattr(the_package, test)
# Old tests run to completion simply as a side-effect of
# being imported. For tests based on unittest or doctest,
# explicitly invoke their test_main() function (if it exists).
indirect_test = getattr(the_module, "test_main", None)
if indirect_test is not None:
indirect_test()
if huntrleaks:
refleak = dash_R(the_module, test, indirect_test,
huntrleaks)
test_time = time.time() - start_time
except support.ResourceDenied as msg:
if not quiet:
print(test, "skipped --", msg)
sys.stdout.flush()
return RESOURCE_DENIED, test_time
except unittest.SkipTest as msg:
if not quiet:
print(test, "skipped --", msg)
sys.stdout.flush()
return SKIPPED, test_time
except KeyboardInterrupt:
raise
except support.TestFailed as msg:
print("test", test, "failed --", msg)
sys.stdout.flush()
return FAILED, test_time
except:
type, value = sys.exc_info()[:2]
print("test", test, "crashed --", str(type) + ":", value)
sys.stdout.flush()
if verbose or debug:
traceback.print_exc(file=sys.stdout)
sys.stdout.flush()
return FAILED, test_time
else:
if refleak:
return FAILED, test_time
if environment.changed:
return ENV_CHANGED, test_time
return PASSED, test_time
def cleanup_test_droppings(testname, verbose):
import shutil
import stat
# Try to clean up junk commonly left behind. While tests shouldn't leave
# any files or directories behind, when a test fails that can be tedious
# for it to arrange. The consequences can be especially nasty on Windows,
# since if a test leaves a file open, it cannot be deleted by name (while
# there's nothing we can do about that here either, we can display the
# name of the offending test, which is a real help).
for name in (support.TESTFN,
"db_home",
):
if not os.path.exists(name):
continue
if os.path.isdir(name):
kind, nuker = "directory", shutil.rmtree
elif os.path.isfile(name):
kind, nuker = "file", os.unlink
else:
raise SystemError("os.path says %r exists but is neither "
"directory nor file" % name)
if verbose:
print("%r left behind %s %r" % (testname, kind, name))
try:
# if we have chmod, fix possible permissions problems
# that might prevent cleanup
if (hasattr(os, 'chmod')):
os.chmod(name, stat.S_IRWXU | stat.S_IRWXG | stat.S_IRWXO)
nuker(name)
except Exception as msg:
print(("%r left behind %s %r and it couldn't be "
"removed: %s" % (testname, kind, name, msg)), file=sys.stderr)
def dash_R(the_module, test, indirect_test, huntrleaks):
"""Run a test multiple times, looking for reference leaks.
Returns:
False if the test didn't leak references; True if we detected refleaks.
"""
# This code is hackish and inelegant, but it seems to do the job.
import copyreg, _abcoll
if not hasattr(sys, 'gettotalrefcount'):
raise Exception("Tracking reference leaks requires a debug build "
"of Python")
# Save current values for dash_R_cleanup() to restore.
fs = warnings.filters[:]
ps = copyreg.dispatch_table.copy()
pic = sys.path_importer_cache.copy()
abcs = {}
for abc in [getattr(_abcoll, a) for a in _abcoll.__all__]:
if not isabstract(abc):
continue
for obj in abc.__subclasses__() + [abc]:
abcs[obj] = obj._abc_registry.copy()
if indirect_test:
def run_the_test():
indirect_test()
else:
def run_the_test():
del sys.modules[the_module.__name__]
exec('import ' + the_module.__name__)
deltas = []
nwarmup, ntracked, fname = huntrleaks
repcount = nwarmup + ntracked
print("beginning", repcount, "repetitions", file=sys.stderr)
print(("1234567890"*(repcount//10 + 1))[:repcount], file=sys.stderr)
sys.stderr.flush()
dash_R_cleanup(fs, ps, pic, abcs)
for i in range(repcount):
rc = sys.gettotalrefcount()
run_the_test()
sys.stderr.write('.')
sys.stderr.flush()
dash_R_cleanup(fs, ps, pic, abcs)
if i >= nwarmup:
deltas.append(sys.gettotalrefcount() - rc - 2)
print(file=sys.stderr)
if any(deltas):
msg = '%s leaked %s references, sum=%s' % (test, deltas, sum(deltas))
print(msg, file=sys.stderr)
sys.stderr.flush()
with open(fname, "a") as refrep:
print(msg, file=refrep)
refrep.flush()
return True
return False
def dash_R_cleanup(fs, ps, pic, abcs):
import gc, copyreg
import _strptime, linecache
import urllib.parse, urllib.request, mimetypes, doctest
import struct, filecmp, _abcoll
from distutils.dir_util import _path_created
from weakref import WeakSet
# Clear the warnings registry, so they can be displayed again
for mod in sys.modules.values():
if hasattr(mod, '__warningregistry__'):
del mod.__warningregistry__
# Restore some original values.
warnings.filters[:] = fs
copyreg.dispatch_table.clear()
copyreg.dispatch_table.update(ps)
sys.path_importer_cache.clear()
sys.path_importer_cache.update(pic)
# clear type cache
sys._clear_type_cache()
# Clear ABC registries, restoring previously saved ABC registries.
for abc in [getattr(_abcoll, a) for a in _abcoll.__all__]:
if not isabstract(abc):
continue
for obj in abc.__subclasses__() + [abc]:
obj._abc_registry = abcs.get(obj, WeakSet()).copy()
obj._abc_cache.clear()
obj._abc_negative_cache.clear()
# Flush standard output, so that buffered data is sent to the OS and
# associated Python objects are reclaimed.
for stream in (sys.stdout, sys.stderr, sys.__stdout__, sys.__stderr__):
if stream is not None:
stream.flush()
# Clear assorted module caches.
_path_created.clear()
re.purge()
_strptime._regex_cache.clear()
urllib.parse.clear_cache()
urllib.request.urlcleanup()
linecache.clearcache()
mimetypes._default_mime_types()
filecmp._cache.clear()
struct._clearcache()
doctest.master = None
# Collect cyclic trash.
gc.collect()
def warm_char_cache():
s = bytes(range(256))
for i in range(256):
s[i:i+1]
def findtestdir():
if __name__ == '__main__':
file = sys.argv[0]
else:
file = __file__
testdir = os.path.dirname(file) or os.curdir
return testdir
def removepy(name):
if name.endswith(".py"):
name = name[:-3]
return name
def count(n, word):
if n == 1:
return "%d %s" % (n, word)
else:
return "%d %ss" % (n, word)
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.
"""
from textwrap import fill
blanks = ' ' * indent
print(fill(' '.join(map(str, x)), width,
initial_indent=blanks, subsequent_indent=blanks))
# Map sys.platform to a string containing the basenames of tests
# expected to be skipped on that platform.
#
# Special cases:
# test_pep277
# The _ExpectedSkips constructor adds this to the set of expected
# skips if not os.path.supports_unicode_filenames.
# test_timeout
# Controlled by test_timeout.skip_expected. Requires the network
# resource and a socket module.
#
# Tests that are expected to be skipped everywhere except on one platform
# are also handled separately.
_expectations = {
'win32':
"""
test__locale
test_crypt
test_curses
test_dbm
test_fcntl
test_fork1
test_epoll
test_dbm_gnu
test_dbm_ndbm
test_grp
test_ioctl
test_largefile
test_kqueue
test_openpty
test_ossaudiodev
test_pipes
test_poll
test_posix
test_pty
test_pwd
test_resource
test_signal
test_syslog
test_threadsignals
test_wait3
test_wait4
""",
'linux2':
"""
test_curses
test_largefile
test_kqueue
test_ossaudiodev
""",
'mac':
"""
test_atexit
test_bz2
test_crypt
test_curses
test_dbm
test_fcntl
test_fork1
test_epoll
test_grp
test_ioctl
test_largefile
test_locale
test_kqueue
test_mmap
test_openpty
test_ossaudiodev
test_poll
test_popen
test_posix
test_pty
test_pwd
test_resource
test_signal
test_sundry
test_tarfile
""",
'unixware7':
"""
test_epoll
test_largefile
test_kqueue
test_minidom
test_openpty
test_pyexpat
test_sax
test_sundry
""",
'openunix8':
"""
test_epoll
test_largefile
test_kqueue
test_minidom
test_openpty
test_pyexpat
test_sax
test_sundry
""",
'sco_sv3':
"""
test_asynchat
test_fork1
test_epoll
test_gettext
test_largefile
test_locale
test_kqueue
test_minidom
test_openpty
test_pyexpat
test_queue
test_sax
test_sundry
test_thread
test_threaded_import
test_threadedtempfile
test_threading
""",
'darwin':
"""
test__locale
test_curses
test_epoll
test_dbm_gnu
test_largefile
test_locale
test_minidom
test_ossaudiodev
test_poll
""",
'sunos5':
"""
test_curses
test_dbm
test_epoll
test_kqueue
test_dbm_gnu
test_gzip
test_openpty
test_zipfile
test_zlib
""",
'hp-ux11':
"""
test_curses
test_epoll
test_dbm_gnu
test_gzip
test_largefile
test_locale
test_kqueue
test_minidom
test_openpty
test_pyexpat
test_sax
test_zipfile
test_zlib
""",
'cygwin':
"""
test_curses
test_dbm
test_epoll
test_ioctl
test_kqueue
test_largefile
test_locale
test_ossaudiodev
test_socketserver
""",
'os2emx':
"""
test_audioop
test_curses
test_epoll
test_kqueue
test_largefile
test_mmap
test_openpty
test_ossaudiodev
test_pty
test_resource
test_signal
""",
'freebsd4':
"""
test_epoll
test_dbm_gnu
test_locale
test_ossaudiodev
test_pep277
test_pty
test_socketserver
test_tcl
test_tk
test_ttk_guionly
test_ttk_textonly
test_timeout
test_urllibnet
test_multiprocessing
""",
'aix5':
"""
test_bz2
test_epoll
test_dbm_gnu
test_gzip
test_kqueue
test_ossaudiodev
test_tcl
test_tk
test_ttk_guionly
test_ttk_textonly
test_zipimport
test_zlib
""",
'openbsd3':
"""
test_ctypes
test_epoll
test_dbm_gnu
test_locale
test_normalization
test_ossaudiodev
test_pep277
test_tcl
test_tk
test_ttk_guionly
test_ttk_textonly
test_multiprocessing
""",
'netbsd3':
"""
test_ctypes
test_curses
test_epoll
test_dbm_gnu
test_locale
test_ossaudiodev
test_pep277
test_tcl
test_tk
test_ttk_guionly
test_ttk_textonly
test_multiprocessing
""",
}
_expectations['freebsd5'] = _expectations['freebsd4']
_expectations['freebsd6'] = _expectations['freebsd4']
_expectations['freebsd7'] = _expectations['freebsd4']
_expectations['freebsd8'] = _expectations['freebsd4']
class _ExpectedSkips:
def __init__(self):
import os.path
from test import test_timeout
self.valid = False
if sys.platform in _expectations:
s = _expectations[sys.platform]
self.expected = set(s.split())
# These are broken tests, for now skipped on every platform.
# XXX Fix these!
self.expected.add('test_nis')
# expected to be skipped on every platform, even Linux
if not os.path.supports_unicode_filenames:
self.expected.add('test_pep277')
# doctest, profile and cProfile tests fail when the codec for the
# fs encoding isn't built in because PyUnicode_Decode() adds two
# calls into Python.
encs = ("utf-8", "latin-1", "ascii", "mbcs", "utf-16", "utf-32")
if sys.getfilesystemencoding().lower() not in encs:
self.expected.add('test_profile')
self.expected.add('test_cProfile')
self.expected.add('test_doctest')
if test_timeout.skip_expected:
self.expected.add('test_timeout')
if sys.platform != "win32":
# test_sqlite is only reliable on Windows where the library
# is distributed with Python
WIN_ONLY = ["test_unicode_file", "test_winreg",
"test_winsound", "test_startfile",
"test_sqlite"]
for skip in WIN_ONLY:
self.expected.add(skip)
if sys.platform != 'sunos5':
self.expected.add('test_nis')
self.valid = True
def isvalid(self):
"Return true iff _ExpectedSkips knows about the current platform."
return self.valid
def getexpected(self):
"""Return set of test names we expect to skip on current platform.
self.isvalid() must be true.
"""
assert self.isvalid()
return self.expected
if __name__ == '__main__':
# Remove regrtest.py's own directory from the module search path. This
# prevents relative imports from working, and relative imports will screw
# up the testing framework. E.g. if both test.support and
# support are imported, they will not contain the same globals, and
# much of the testing framework relies on the globals in the
# test.support module.
mydir = os.path.abspath(os.path.normpath(os.path.dirname(sys.argv[0])))
i = len(sys.path)
while i >= 0:
i -= 1
if os.path.abspath(os.path.normpath(sys.path[i])) == mydir:
del sys.path[i]
main()
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