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cpython/Lib/test/regrtest.py

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#! /usr/bin/env python
"""
Usage:
python -m test.regrtest [options] [test_name1 [test_name2 ...]]
python path/to/Lib/test/regrtest.py [options] [test_name1 [test_name2 ...]]
If no arguments or options are provided, finds all files matching
the pattern "test_*" in the Lib/test subdirectory and runs
them in alphabetical order (but see -M and -u, below, for exceptions).
For more rigorous testing, it is useful to use the following
command line:
python -E -tt -Wd -3 -m test.regrtest [options] [test_name1 ...]
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
-q/--quiet -- no output unless one or more tests fail
-S/--slow -- print the slowest 10 tests
--header -- print header with interpreter info
Selecting tests
-r/--random -- randomize test execution order (see below)
--randseed -- pass a random seed to reproduce a previous random run
-f/--fromfile -- read names of tests to run from a file (see below)
-x/--exclude -- arguments are tests to *exclude*
-s/--single -- single step through a set of tests (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 tracing 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)
-F/--forever -- run the specified tests in a loop, until an error happens
Additional Option Details:
-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.
-s On the first invocation of regrtest using -s, the first test file found
or the first test file given on the command line is run, and the name of
the next test is recorded in a file named pynexttest. If run from the
Python build directory, pynexttest is located in the 'build' subdirectory,
otherwise it is located in tempfile.gettempdir(). On subsequent runs,
the test in pynexttest is run, and the next test is written to pynexttest.
When the last test has been run, pynexttest is deleted. In this way it
is possible to single step through the test files. This is useful when
doing memory analysis on the Python interpreter, which process tends to
consume too many resources to run the full regression test non-stop.
-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.
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.
bsddb - It is okay to run the bsddb testsuite, which takes
a long time to complete.
decimal - Test the decimal module against a large suite that
verifies compliance with standards.
cpu - Used for certain CPU-heavy tests.
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.
xpickle - Test pickle and cPickle against Python 2.4, 2.5 and 2.6 to
test backwards compatibility. These tests take a long time
to run.
To enable all resources except one, use '-uall,-<resource>'. For
example, to run all the tests except for the bsddb tests, give the
option '-uall,-bsddb'.
"""
import StringIO
import getopt
import json
import os
import random
import re
import sys
import time
import traceback
import warnings
import unittest
import tempfile
import imp
import platform
import sysconfig
# Some times __path__ and __file__ are not absolute (e.g. while running from
# Lib/) and, if we change the CWD to run the tests in a temporary dir, some
# imports might fail. This affects only the modules imported before os.chdir().
# These modules are searched first in sys.path[0] (so '' -- the CWD) and if
# they are found in the CWD their __file__ and __path__ will be relative (this
# happens before the chdir). All the modules imported after the chdir, are
# not found in the CWD, and since the other paths in sys.path[1:] are absolute
# (site.py absolutize them), the __file__ and __path__ will be absolute too.
# Therefore it is necessary to absolutize manually the __file__ and __path__ of
# the packages to prevent later imports to fail when the CWD is different.
for module in sys.modules.itervalues():
if hasattr(module, '__path__'):
module.__path__ = [os.path.abspath(path) for path in module.__path__]
if hasattr(module, '__file__'):
module.__file__ = os.path.abspath(module.__file__)
# 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 test_support
RESOURCE_NAMES = ('audio', 'curses', 'largefile', 'network', 'bsddb',
'decimal', 'cpu', 'subprocess', 'urlfetch', 'gui',
'xpickle')
TEMPDIR = os.path.abspath(tempfile.gettempdir())
def usage(code, msg=''):
print __doc__
if msg: print msg
sys.exit(code)
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,
header=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.
"""
test_support.record_original_stdout(sys.stdout)
try:
opts, args = getopt.getopt(sys.argv[1:], 'hvqxsSrf:lu:t:TD:NLR:FwWM:j:',
['help', 'verbose', 'verbose2', 'verbose3', 'quiet',
'exclude', 'single', 'slow', 'random', 'fromfile', 'findleaks',
'use=', 'threshold=', 'trace', 'coverdir=', 'nocoverdir',
'runleaks', 'huntrleaks=', 'memlimit=', 'randseed=',
'multiprocess=', 'slaveargs=', 'forever', 'header'])
except getopt.error, msg:
usage(2, msg)
# Defaults
if random_seed is None:
random_seed = random.randrange(10000000)
if use_resources is None:
use_resources = []
for o, a in opts:
if o in ('-h', '--help'):
usage(0)
elif o in ('-v', '--verbose'):
verbose += 1
elif o in ('-w', '--verbose2'):
verbose2 = 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', '--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(2, '-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"]
elif o in ('-M', '--memlimit'):
test_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(1, '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 ('-F', '--forever'):
forever = True
elif o in ('-j', '--multiprocess'):
use_mp = int(a)
elif o == '--header':
header = True
elif o == '--slaveargs':
args, kwargs = json.loads(a)
try:
result = runtest(*args, **kwargs)
except BaseException, e:
result = INTERRUPTED, e.__class__.__name__
print # Force a newline (just in case)
print json.dumps(result)
sys.exit(0)
else:
print >>sys.stderr, ("No handler for option {}. Please "
"report this as a bug at http://bugs.python.org.").format(o)
sys.exit(1)
if single and fromfile:
usage(2, "-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 = []
interrupted = False
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:
filename = os.path.join(TEMPDIR, 'pynexttest')
try:
fp = open(filename, 'r')
next_test = fp.read().strip()
tests = [next_test]
fp.close()
except IOError:
pass
if fromfile:
tests = []
fp = open(os.path.join(test_support.SAVEDCWD, 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.
removepy(args)
removepy(tests)
stdtests = STDTESTS[:]
nottests = NOTTESTS.copy()
if exclude:
for arg in args:
if arg in stdtests:
stdtests.remove(arg)
nottests.add(arg)
args = []
# For a partial run, we do not need to clutter the output.
if verbose or header or not (quiet or single or tests or args):
# Print basic platform information
print "==", platform.python_implementation(), \
" ".join(sys.version.split())
print "== ", platform.platform(aliased=True), \
"%s-endian" % sys.byteorder
print "== ", os.getcwd()
print "Testing with flags:", sys.flags
alltests = findtests(testdir, stdtests, nottests)
selected = tests or args or alltests
if single:
selected = selected[:1]
try:
next_single_test = alltests[alltests.index(selected[0])+1]
except IndexError:
next_single_test = None
if randomize:
random.seed(random_seed)
print "Using random seed", random_seed
random.shuffle(selected)
if trace:
import trace
tracer = trace.Trace(ignoredirs=[sys.prefix, sys.exec_prefix],
trace=False, count=True)
test_times = []
test_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(selected)):
while True:
for test in tests:
yield test
if bad:
return
tests = test_forever()
else:
tests = iter(selected)
if use_mp:
try:
from threading import Thread
except ImportError:
print "Multiprocess option requires thread support"
sys.exit(2)
from Queue import Queue
from subprocess import Popen, PIPE
debug_output_pat = re.compile(r"\[\d+ refs\]$")
output = Queue()
def tests_and_args():
for test in tests:
args_tuple = (
(test, verbose, quiet),
dict(huntrleaks=huntrleaks, use_resources=use_resources)
)
yield (test, args_tuple)
pending = tests_and_args()
opt_args = test_support.args_from_interpreter_flags()
base_cmd = [sys.executable] + opt_args + ['-m', 'test.regrtest']
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(base_cmd + ['--slaveargs', json.dumps(args_tuple)],
stdout=PIPE, stderr=PIPE,
universal_newlines=True,
close_fds=(os.name != 'nt'))
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 >>sys.stderr, stderr
if result[0] == INTERRUPTED:
assert result[1] == 'KeyboardInterrupt'
raise KeyboardInterrupt # What else?
accumulate_result(test, result)
except KeyboardInterrupt:
interrupted = True
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)',
globals=globals(), locals=vars())
else:
try:
result = runtest(test, verbose, quiet, huntrleaks)
accumulate_result(test, result)
if verbose3 and result[0] == FAILED:
print "Re-running test %r in verbose mode" % test
runtest(test, True, quiet, huntrleaks)
except KeyboardInterrupt:
interrupted = True
break
except:
raise
if findleaks:
gc.collect()
if gc.garbage:
print "Warning: test created", len(gc.garbage),
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."):
test_support.unload(module)
if interrupted:
# print a newline after ^C
print
print "Test suite interrupted by signal SIGINT."
omitted = set(selected) - set(good) - set(bad) - set(skipped)
print count(len(omitted), "test"), "omitted:"
printlist(omitted)
if good and not quiet:
if not bad and not skipped and not interrupted and len(good) > 1:
print "All",
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 = 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:
test_support.verbose = True
ok = runtest(test, True, quiet, huntrleaks)
except KeyboardInterrupt:
# print a newline separate from the ^C
print
break
except:
raise
if single:
if next_single_test:
with open(filename, 'w') as fp:
fp.write(next_single_test + '\n')
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 or interrupted)
STDTESTS = [
'test_grammar',
'test_opcodes',
'test_dict',
'test_builtin',
'test_exceptions',
'test_types',
'test_unittest',
'test_doctest',
'test_doctest2',
]
NOTTESTS = {
'test_support',
'test_future1',
'test_future2',
}
def findtests(testdir=None, stdtests=STDTESTS, nottests=NOTTESTS):
"""Return a list of all applicable test modules."""
testdir = findtestdir(testdir)
names = os.listdir(testdir)
tests = []
others = set(stdtests) | nottests
for name in names:
modname, ext = os.path.splitext(name)
if modname[:5] == "test_" and ext == ".py" and modname not in others:
tests.append(modname)
return stdtests + sorted(tests)
def runtest(test, verbose, quiet,
huntrleaks=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
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
"""
test_support.verbose = verbose # Tell tests to be moderately quiet
if use_resources is not None:
test_support.use_resources = use_resources
try:
return runtest_inner(test, verbose, quiet, huntrleaks)
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', 'asyncore.socket_map',
'test_support.TESTFN',
)
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 get_asyncore_socket_map(self):
asyncore = sys.modules.get('asyncore')
# XXX Making a copy keeps objects alive until __exit__ gets called.
return asyncore and asyncore.socket_map.copy() or {}
def restore_asyncore_socket_map(self, saved_map):
asyncore = sys.modules.get('asyncore')
if asyncore is not None:
asyncore.close_all(ignore_all=True)
asyncore.socket_map.update(saved_map)
def get_test_support_TESTFN(self):
if os.path.isfile(test_support.TESTFN):
result = 'f'
elif os.path.isdir(test_support.TESTFN):
result = 'd'
else:
result = None
return result
def restore_test_support_TESTFN(self, saved_value):
if saved_value is None:
if os.path.isfile(test_support.TESTFN):
os.unlink(test_support.TESTFN)
elif os.path.isdir(test_support.TESTFN):
shutil.rmtree(test_support.TESTFN)
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):
saved_values = self.saved_values
del self.saved_values
for name, get, restore in self.resource_info():
current = get()
original = saved_values.pop(name)
# Check for changes to the resource's value
if current != original:
self.changed = True
restore(original)
if not self.quiet:
print >>sys.stderr, (
"Warning -- {} was modified by {}".format(
name, self.testname))
if self.verbose > 1:
print >>sys.stderr, (
" Before: {}\n After: {} ".format(
original, current))
# XXX (ncoghlan): for most resources (e.g. sys.path) identity
# matters at least as much as value. For others (e.g. cwd),
# identity is irrelevant. Should we add a mechanism to check
# for substitution in the cases where it matters?
return False
def runtest_inner(test, verbose, quiet, huntrleaks=False):
test_support.unload(test)
if verbose:
capture_stdout = None
else:
capture_stdout = StringIO.StringIO()
test_time = 0.0
refleak = False # True if the test leaked references.
try:
save_stdout = sys.stdout
try:
if capture_stdout:
sys.stdout = capture_stdout
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
finally:
sys.stdout = save_stdout
except test_support.ResourceDenied, msg:
if not quiet:
print test, "skipped --", msg
sys.stdout.flush()
return RESOURCE_DENIED, test_time
except unittest.SkipTest, msg:
if not quiet:
print test, "skipped --", msg
sys.stdout.flush()
return SKIPPED, test_time
except KeyboardInterrupt:
raise
except test_support.TestFailed, msg:
print >>sys.stderr, "test", test, "failed --", msg
sys.stderr.flush()
return FAILED, test_time
except:
type, value = sys.exc_info()[:2]
print >>sys.stderr, "test", test, "crashed --", str(type) + ":", value
sys.stderr.flush()
if verbose:
traceback.print_exc(file=sys.stderr)
sys.stderr.flush()
return FAILED, test_time
else:
if refleak:
return FAILED, test_time
if environment.changed:
return ENV_CHANGED, test_time
# Except in verbose mode, tests should not print anything
if verbose or huntrleaks:
return PASSED, test_time
output = capture_stdout.getvalue()
if not output:
return PASSED, test_time
print "test", test, "produced unexpected output:"
print "*" * 70
print output
print "*" * 70
sys.stdout.flush()
return FAILED, test_time
def cleanup_test_droppings(testname, verbose):
import shutil
import stat
import gc
# First kill any dangling references to open files etc.
gc.collect()
# 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 (test_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, msg:
print >> sys.stderr, ("%r left behind %s %r and it couldn't be "
"removed: %s" % (testname, kind, name, msg))
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 copy_reg, _abcoll, _pyio
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 = copy_reg.dispatch_table.copy()
pic = sys.path_importer_cache.copy()
try:
import zipimport
except ImportError:
zdc = None # Run unmodified on platforms without zipimport support
else:
zdc = zipimport._zip_directory_cache.copy()
abcs = {}
modules = _abcoll, _pyio
for abc in [getattr(mod, a) for mod in modules for a in mod.__all__]:
# XXX isinstance(abc, ABCMeta) leads to infinite recursion
if not hasattr(abc, '_abc_registry'):
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():
imp.reload(the_module)
deltas = []
nwarmup, ntracked, fname = huntrleaks
fname = os.path.join(test_support.SAVEDCWD, fname)
repcount = nwarmup + ntracked
print >> sys.stderr, "beginning", repcount, "repetitions"
print >> sys.stderr, ("1234567890"*(repcount//10 + 1))[:repcount]
dash_R_cleanup(fs, ps, pic, zdc, abcs)
for i in range(repcount):
rc_before = sys.gettotalrefcount()
run_the_test()
sys.stderr.write('.')
dash_R_cleanup(fs, ps, pic, zdc, abcs)
rc_after = sys.gettotalrefcount()
if i >= nwarmup:
deltas.append(rc_after - rc_before)
print >> sys.stderr
if any(deltas):
msg = '%s leaked %s references, sum=%s' % (test, deltas, sum(deltas))
print >> sys.stderr, msg
with open(fname, "a") as refrep:
print >> refrep, msg
refrep.flush()
return True
return False
def dash_R_cleanup(fs, ps, pic, zdc, abcs):
import gc, copy_reg
import _strptime, linecache
dircache = test_support.import_module('dircache', deprecated=True)
import urlparse, urllib, urllib2, mimetypes, doctest
import struct, filecmp
from distutils.dir_util import _path_created
# 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
copy_reg.dispatch_table.clear()
copy_reg.dispatch_table.update(ps)
sys.path_importer_cache.clear()
sys.path_importer_cache.update(pic)
try:
import zipimport
except ImportError:
pass # Run unmodified on platforms without zipimport support
else:
zipimport._zip_directory_cache.clear()
zipimport._zip_directory_cache.update(zdc)
# clear type cache
sys._clear_type_cache()
# Clear ABC registries, restoring previously saved ABC registries.
for abc, registry in abcs.items():
abc._abc_registry = registry.copy()
abc._abc_cache.clear()
abc._abc_negative_cache.clear()
# Clear assorted module caches.
_path_created.clear()
re.purge()
_strptime._regex_cache.clear()
urlparse.clear_cache()
urllib.urlcleanup()
urllib2.install_opener(None)
dircache.reset()
linecache.clearcache()
mimetypes._default_mime_types()
filecmp._cache.clear()
struct._clearcache()
doctest.master = None
try:
import ctypes
except ImportError:
# Don't worry about resetting the cache if ctypes is not supported
pass
else:
ctypes._reset_cache()
# Collect cyclic trash.
gc.collect()
def findtestdir(path=None):
return path or os.path.dirname(__file__) or os.curdir
def removepy(names):
if not names:
return
for idx, name in enumerate(names):
basename, ext = os.path.splitext(name)
if ext == '.py':
names[idx] = basename
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 the sorted list: 'x' may be a '--random' list or a set()
print fill(' '.join(str(elt) for elt in sorted(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_bsddb185
test_bsddb3
test_commands
test_crypt
test_curses
test_dbm
test_dl
test_fcntl
test_fork1
test_epoll
test_gdbm
test_grp
test_ioctl
test_largefile
test_kqueue
test_mhlib
test_openpty
test_ossaudiodev
test_pipes
test_poll
test_posix
test_pty
test_pwd
test_resource
test_signal
test_threadsignals
test_timing
test_wait3
test_wait4
""",
'linux2':
"""
test_bsddb185
test_curses
test_dl
test_largefile
test_kqueue
test_ossaudiodev
""",
'unixware7':
"""
test_bsddb
test_bsddb185
test_dl
test_epoll
test_largefile
test_kqueue
test_minidom
test_openpty
test_pyexpat
test_sax
test_sundry
""",
'openunix8':
"""
test_bsddb
test_bsddb185
test_dl
test_epoll
test_largefile
test_kqueue
test_minidom
test_openpty
test_pyexpat
test_sax
test_sundry
""",
'sco_sv3':
"""
test_asynchat
test_bsddb
test_bsddb185
test_dl
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
""",
'riscos':
"""
test_asynchat
test_atexit
test_bsddb
test_bsddb185
test_bsddb3
test_commands
test_crypt
test_dbm
test_dl
test_fcntl
test_fork1
test_epoll
test_gdbm
test_grp
test_largefile
test_locale
test_kqueue
test_mmap
test_openpty
test_poll
test_popen2
test_pty
test_pwd
test_strop
test_sundry
test_thread
test_threaded_import
test_threadedtempfile
test_threading
test_timing
""",
'darwin':
"""
test__locale
test_bsddb
test_bsddb3
test_curses
test_epoll
test_gdb
test_gdbm
test_largefile
test_locale
test_kqueue
test_minidom
test_ossaudiodev
test_poll
""",
'sunos5':
"""
test_bsddb
test_bsddb185
test_curses
test_dbm
test_epoll
test_kqueue
test_gdbm
test_gzip
test_openpty
test_zipfile
test_zlib
""",
'hp-ux11':
"""
test_bsddb
test_bsddb185
test_curses
test_dl
test_epoll
test_gdbm
test_gzip
test_largefile
test_locale
test_kqueue
test_minidom
test_openpty
test_pyexpat
test_sax
test_zipfile
test_zlib
""",
'atheos':
"""
test_bsddb185
test_curses
test_dl
test_gdbm
test_epoll
test_largefile
test_locale
test_kqueue
test_mhlib
test_mmap
test_poll
test_popen2
test_resource
""",
'cygwin':
"""
test_bsddb185
test_bsddb3
test_curses
test_dbm
test_epoll
test_ioctl
test_kqueue
test_largefile
test_locale
test_ossaudiodev
test_socketserver
""",
'os2emx':
"""
test_audioop
test_bsddb185
test_bsddb3
test_commands
test_curses
test_dl
test_epoll
test_kqueue
test_largefile
test_mhlib
test_mmap
test_openpty
test_ossaudiodev
test_pty
test_resource
test_signal
""",
'freebsd4':
"""
test_bsddb
test_bsddb3
test_epoll
test_gdbm
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_bsddb
test_bsddb185
test_bsddb3
test_bz2
test_dl
test_epoll
test_gdbm
test_gzip
test_kqueue
test_ossaudiodev
test_tcl
test_tk
test_ttk_guionly
test_ttk_textonly
test_zipimport
test_zlib
""",
'openbsd3':
"""
test_ascii_formatd
test_bsddb
test_bsddb3
test_ctypes
test_dl
test_epoll
test_gdbm
test_locale
test_normalization
test_ossaudiodev
test_pep277
test_tcl
test_tk
test_ttk_guionly
test_ttk_textonly
test_multiprocessing
""",
'netbsd3':
"""
test_ascii_formatd
test_bsddb
test_bsddb185
test_bsddb3
test_ctypes
test_curses
test_dl
test_epoll
test_gdbm
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())
# expected to be skipped on every platform, even Linux
self.expected.add('test_linuxaudiodev')
if not os.path.supports_unicode_filenames:
self.expected.add('test_pep277')
if test_timeout.skip_expected:
self.expected.add('test_timeout')
if sys.maxint == 9223372036854775807L:
self.expected.add('test_imageop')
if sys.platform != "darwin":
MAC_ONLY = ["test_macos", "test_macostools", "test_aepack",
"test_plistlib", "test_scriptpackages",
"test_applesingle"]
for skip in MAC_ONLY:
self.expected.add(skip)
elif len(u'\0'.encode('unicode-internal')) == 4:
self.expected.add("test_macostools")
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", "test_msilib"]
for skip in WIN_ONLY:
self.expected.add(skip)
if sys.platform != 'irix':
IRIX_ONLY = ["test_imageop", "test_al", "test_cd", "test_cl",
"test_gl", "test_imgfile"]
for skip in IRIX_ONLY:
self.expected.add(skip)
if sys.platform != 'sunos5':
self.expected.add('test_sunaudiodev')
self.expected.add('test_nis')
if not sys.py3kwarning:
self.expected.add('test_py3kwarn')
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__':
# findtestdir() gets the dirname out of __file__, so we have to make it
# absolute before changing the working directory.
# For example __file__ may be relative when running trace or profile.
# See issue #9323.
__file__ = os.path.abspath(__file__)
# sanity check
assert __file__ == os.path.abspath(sys.argv[0])
# When tests are run from the Python build directory, it is best practice
# to keep the test files in a subfolder. It eases the cleanup of leftover
# files using command "make distclean".
if sysconfig.is_python_build():
TEMPDIR = os.path.join(sysconfig.get_config_var('srcdir'), 'build')
TEMPDIR = os.path.abspath(TEMPDIR)
if not os.path.exists(TEMPDIR):
os.mkdir(TEMPDIR)
# 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).
TESTCWD = 'test_python_{}'.format(os.getpid())
TESTCWD = os.path.join(TEMPDIR, TESTCWD)
# Run the tests in a context manager that temporary 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 test_support.SAVEDCWD.
with test_support.temp_cwd(TESTCWD, quiet=True):
main()
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