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347 lines
16 KiB
Python
347 lines
16 KiB
Python
import argparse
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import os
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import sys
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from test import support
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USAGE = """\
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python -m test [options] [test_name1 [test_name2 ...]]
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python path/to/Lib/test/regrtest.py [options] [test_name1 [test_name2 ...]]
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"""
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DESCRIPTION = """\
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Run Python regression tests.
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If no arguments or options are provided, finds all files matching
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the pattern "test_*" in the Lib/test subdirectory and runs
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them in alphabetical order (but see -M and -u, below, for exceptions).
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For more rigorous testing, it is useful to use the following
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command line:
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python -E -Wd -m test [options] [test_name1 ...]
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"""
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EPILOG = """\
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Additional option details:
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-r randomizes test execution order. You can use --randseed=int to provide an
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int seed value for the randomizer; this is useful for reproducing troublesome
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test orders.
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-s On the first invocation of regrtest using -s, the first test file found
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or the first test file given on the command line is run, and the name of
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the next test is recorded in a file named pynexttest. If run from the
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Python build directory, pynexttest is located in the 'build' subdirectory,
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otherwise it is located in tempfile.gettempdir(). On subsequent runs,
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the test in pynexttest is run, and the next test is written to pynexttest.
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When the last test has been run, pynexttest is deleted. In this way it
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is possible to single step through the test files. This is useful when
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doing memory analysis on the Python interpreter, which process tends to
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consume too many resources to run the full regression test non-stop.
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-S is used to continue running tests after an aborted run. It will
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maintain the order a standard run (ie, this assumes -r is not used).
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This is useful after the tests have prematurely stopped for some external
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reason and you want to start running from where you left off rather
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than starting from the beginning.
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-f reads the names of tests from the file given as f's argument, one
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or more test names per line. Whitespace is ignored. Blank lines and
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lines beginning with '#' are ignored. This is especially useful for
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whittling down failures involving interactions among tests.
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-L causes the leaks(1) command to be run just before exit if it exists.
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leaks(1) is available on Mac OS X and presumably on some other
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FreeBSD-derived systems.
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-R runs each test several times and examines sys.gettotalrefcount() to
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see if the test appears to be leaking references. The argument should
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be of the form stab:run:fname where 'stab' is the number of times the
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test is run to let gettotalrefcount settle down, 'run' is the number
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of times further it is run and 'fname' is the name of the file the
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reports are written to. These parameters all have defaults (5, 4 and
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"reflog.txt" respectively), and the minimal invocation is '-R :'.
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-M runs tests that require an exorbitant amount of memory. These tests
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typically try to ascertain containers keep working when containing more than
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2 billion objects, which only works on 64-bit systems. There are also some
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tests that try to exhaust the address space of the process, which only makes
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sense on 32-bit systems with at least 2Gb of memory. The passed-in memlimit,
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which is a string in the form of '2.5Gb', determines howmuch memory the
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tests will limit themselves to (but they may go slightly over.) The number
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shouldn't be more memory than the machine has (including swap memory). You
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should also keep in mind that swap memory is generally much, much slower
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than RAM, and setting memlimit to all available RAM or higher will heavily
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tax the machine. On the other hand, it is no use running these tests with a
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limit of less than 2.5Gb, and many require more than 20Gb. Tests that expect
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to use more than memlimit memory will be skipped. The big-memory tests
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generally run very, very long.
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-u is used to specify which special resource intensive tests to run,
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such as those requiring large file support or network connectivity.
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The argument is a comma-separated list of words indicating the
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resources to test. Currently only the following are defined:
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all - Enable all special resources.
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none - Disable all special resources (this is the default).
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audio - Tests that use the audio device. (There are known
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cases of broken audio drivers that can crash Python or
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even the Linux kernel.)
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curses - Tests that use curses and will modify the terminal's
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state and output modes.
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largefile - It is okay to run some test that may create huge
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files. These tests can take a long time and may
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consume >2GB of disk space temporarily.
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network - It is okay to run tests that use external network
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resource, e.g. testing SSL support for sockets.
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decimal - Test the decimal module against a large suite that
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verifies compliance with standards.
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cpu - Used for certain CPU-heavy tests.
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subprocess Run all tests for the subprocess module.
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urlfetch - It is okay to download files required on testing.
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gui - Run tests that require a running GUI.
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tzdata - Run tests that require timezone data.
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To enable all resources except one, use '-uall,-<resource>'. For
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example, to run all the tests except for the gui tests, give the
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option '-uall,-gui'.
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"""
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RESOURCE_NAMES = ('audio', 'curses', 'largefile', 'network',
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'decimal', 'cpu', 'subprocess', 'urlfetch', 'gui', 'tzdata')
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class _ArgParser(argparse.ArgumentParser):
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def error(self, message):
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super().error(message + "\nPass -h or --help for complete help.")
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def _create_parser():
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# Set prog to prevent the uninformative "__main__.py" from displaying in
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# error messages when using "python -m test ...".
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parser = _ArgParser(prog='regrtest.py',
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usage=USAGE,
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description=DESCRIPTION,
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epilog=EPILOG,
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add_help=False,
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formatter_class=argparse.RawDescriptionHelpFormatter)
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# Arguments with this clause added to its help are described further in
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# the epilog's "Additional option details" section.
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more_details = ' See the section at bottom for more details.'
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group = parser.add_argument_group('General options')
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# We add help explicitly to control what argument group it renders under.
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group.add_argument('-h', '--help', action='help',
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help='show this help message and exit')
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group.add_argument('--timeout', metavar='TIMEOUT', type=float,
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help='dump the traceback and exit if a test takes '
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'more than TIMEOUT seconds; disabled if TIMEOUT '
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'is negative or equals to zero')
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group.add_argument('--wait', action='store_true',
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help='wait for user input, e.g., allow a debugger '
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'to be attached')
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group.add_argument('--slaveargs', metavar='ARGS')
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group.add_argument('-S', '--start', metavar='START',
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help='the name of the test at which to start.' +
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more_details)
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group = parser.add_argument_group('Verbosity')
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group.add_argument('-v', '--verbose', action='count',
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help='run tests in verbose mode with output to stdout')
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group.add_argument('-w', '--verbose2', action='store_true',
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help='re-run failed tests in verbose mode')
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group.add_argument('-W', '--verbose3', action='store_true',
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help='display test output on failure')
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group.add_argument('-q', '--quiet', action='store_true',
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help='no output unless one or more tests fail')
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group.add_argument('-o', '--slowest', action='store_true', dest='print_slow',
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help='print the slowest 10 tests')
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group.add_argument('--header', action='store_true',
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help='print header with interpreter info')
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group = parser.add_argument_group('Selecting tests')
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group.add_argument('-r', '--randomize', action='store_true',
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help='randomize test execution order.' + more_details)
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group.add_argument('--randseed', metavar='SEED',
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dest='random_seed', type=int,
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help='pass a random seed to reproduce a previous '
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'random run')
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group.add_argument('-f', '--fromfile', metavar='FILE',
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help='read names of tests to run from a file.' +
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more_details)
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group.add_argument('-x', '--exclude', action='store_true',
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help='arguments are tests to *exclude*')
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group.add_argument('-s', '--single', action='store_true',
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help='single step through a set of tests.' +
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more_details)
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group.add_argument('-m', '--match', metavar='PAT',
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dest='match_tests',
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help='match test cases and methods with glob pattern PAT')
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group.add_argument('-G', '--failfast', action='store_true',
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help='fail as soon as a test fails (only with -v or -W)')
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group.add_argument('-u', '--use', metavar='RES1,RES2,...',
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action='append', type=resources_list,
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help='specify which special resource intensive tests '
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'to run.' + more_details)
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group.add_argument('-M', '--memlimit', metavar='LIMIT',
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help='run very large memory-consuming tests.' +
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more_details)
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group.add_argument('--testdir', metavar='DIR',
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type=relative_filename,
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help='execute test files in the specified directory '
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'(instead of the Python stdlib test suite)')
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group = parser.add_argument_group('Special runs')
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group.add_argument('-l', '--findleaks', action='store_true',
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help='if GC is available detect tests that leak memory')
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group.add_argument('-L', '--runleaks', action='store_true',
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help='run the leaks(1) command just before exit.' +
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more_details)
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group.add_argument('-R', '--huntrleaks', metavar='RUNCOUNTS',
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type=huntrleaks,
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help='search for reference leaks (needs debug build, '
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'very slow).' + more_details)
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group.add_argument('-j', '--multiprocess', metavar='PROCESSES',
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dest='use_mp', type=int,
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help='run PROCESSES processes at once')
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group.add_argument('-T', '--coverage', action='store_true',
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dest='trace',
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help='turn on code coverage tracing using the trace '
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'module')
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group.add_argument('-D', '--coverdir', metavar='DIR',
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type=relative_filename,
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help='directory where coverage files are put')
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group.add_argument('-N', '--nocoverdir',
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action='store_const', const=None, dest='coverdir',
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help='put coverage files alongside modules')
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group.add_argument('-t', '--threshold', metavar='THRESHOLD',
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type=int,
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help='call gc.set_threshold(THRESHOLD)')
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group.add_argument('-n', '--nowindows', action='store_true',
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help='suppress error message boxes on Windows')
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group.add_argument('-F', '--forever', action='store_true',
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help='run the specified tests in a loop, until an '
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'error happens')
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group.add_argument('--list-tests', action='store_true',
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help="only write the name of tests that will be run, "
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"don't execute them")
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group.add_argument('-P', '--pgo', dest='pgo', action='store_true',
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help='enable Profile Guided Optimization training')
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return parser
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def relative_filename(string):
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# CWD is replaced with a temporary dir before calling main(), so we
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# join it with the saved CWD so it ends up where the user expects.
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return os.path.join(support.SAVEDCWD, string)
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def huntrleaks(string):
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args = string.split(':')
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if len(args) not in (2, 3):
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raise argparse.ArgumentTypeError(
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'needs 2 or 3 colon-separated arguments')
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nwarmup = int(args[0]) if args[0] else 5
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ntracked = int(args[1]) if args[1] else 4
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fname = args[2] if len(args) > 2 and args[2] else 'reflog.txt'
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return nwarmup, ntracked, fname
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def resources_list(string):
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u = [x.lower() for x in string.split(',')]
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for r in u:
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if r == 'all' or r == 'none':
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continue
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if r[0] == '-':
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r = r[1:]
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if r not in RESOURCE_NAMES:
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raise argparse.ArgumentTypeError('invalid resource: ' + r)
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return u
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def _parse_args(args, **kwargs):
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# Defaults
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ns = argparse.Namespace(testdir=None, verbose=0, quiet=False,
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exclude=False, single=False, randomize=False, fromfile=None,
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findleaks=False, use_resources=None, trace=False, coverdir='coverage',
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runleaks=False, huntrleaks=False, verbose2=False, print_slow=False,
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random_seed=None, use_mp=None, verbose3=False, forever=False,
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header=False, failfast=False, match_tests=None, pgo=False)
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for k, v in kwargs.items():
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if not hasattr(ns, k):
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raise TypeError('%r is an invalid keyword argument '
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'for this function' % k)
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setattr(ns, k, v)
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if ns.use_resources is None:
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ns.use_resources = []
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parser = _create_parser()
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# Issue #14191: argparse doesn't support "intermixed" positional and
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# optional arguments. Use parse_known_args() as workaround.
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ns.args = parser.parse_known_args(args=args, namespace=ns)[1]
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for arg in ns.args:
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if arg.startswith('-'):
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parser.error("unrecognized arguments: %s" % arg)
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sys.exit(1)
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if ns.single and ns.fromfile:
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parser.error("-s and -f don't go together!")
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if ns.use_mp and ns.trace:
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parser.error("-T and -j don't go together!")
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if ns.use_mp and ns.findleaks:
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parser.error("-l and -j don't go together!")
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if ns.failfast and not (ns.verbose or ns.verbose3):
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parser.error("-G/--failfast needs either -v or -W")
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if ns.pgo and (ns.verbose or ns.verbose2 or ns.verbose3):
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parser.error("--pgo/-v don't go together!")
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if ns.nowindows:
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print("Warning: the --nowindows (-n) option is deprecated. "
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"Use -vv to display assertions in stderr.", file=sys.stderr)
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if ns.quiet:
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ns.verbose = 0
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if ns.timeout is not None:
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if ns.timeout <= 0:
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ns.timeout = None
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if ns.use_mp is not None:
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if ns.use_mp <= 0:
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# Use all cores + extras for tests that like to sleep
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ns.use_mp = 2 + (os.cpu_count() or 1)
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if ns.use:
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for a in ns.use:
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for r in a:
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if r == 'all':
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ns.use_resources[:] = RESOURCE_NAMES
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continue
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if r == 'none':
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del ns.use_resources[:]
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continue
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remove = False
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if r[0] == '-':
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remove = True
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r = r[1:]
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if remove:
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if r in ns.use_resources:
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ns.use_resources.remove(r)
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elif r not in ns.use_resources:
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ns.use_resources.append(r)
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if ns.random_seed is not None:
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ns.randomize = True
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return ns
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