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e51fe8d0a3
name of the test, only write the output file if it already exists (and
tell the user to consider removing it). This avoids the generation of
unnecessary turds.
364 lines
12 KiB
Python
Executable file
364 lines
12 KiB
Python
Executable file
#! /usr/bin/env python
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"""Regression test.
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This will find all modules whose name is "test_*" in the test
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directory, and run them. Various command line options provide
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additional facilities.
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Command line options:
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-v: verbose -- run tests in verbose mode with output to stdout
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-q: quiet -- don't print anything except if a test fails
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-g: generate -- write the output file for a test instead of comparing it
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-x: exclude -- arguments are tests to *exclude*
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-s: single -- run only a single test (see below)
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-r: random -- randomize test execution order
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-l: findleaks -- if GC is available detect tests that leak memory
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--have-resources -- run tests that require large resources (time/space)
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If non-option arguments are present, they are names for tests to run,
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unless -x is given, in which case they are names for tests not to run.
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If no test names are given, all tests are run.
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-v is incompatible with -g and does not compare test output files.
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-s means to run only a single test and exit. This is useful when doing memory
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analysis on the Python interpreter (which tend to consume to many resources to
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run the full regression test non-stop). The file /tmp/pynexttest is read to
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find the next test to run. If this file is missing, the first test_*.py file
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in testdir or on the command line is used. (actually tempfile.gettempdir() is
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used instead of /tmp).
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"""
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import sys
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import os
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import getopt
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import traceback
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import random
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import StringIO
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import test_support
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def main(tests=None, testdir=None, verbose=0, quiet=0, generate=0,
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exclude=0, single=0, randomize=0, findleaks=0,
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use_large_resources=0):
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"""Execute a test suite.
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This also parses command-line options and modifies its behavior
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accordingly.
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tests -- a list of strings containing test names (optional)
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testdir -- the directory in which to look for tests (optional)
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Users other than the Python test suite will certainly want to
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specify testdir; if it's omitted, the directory containing the
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Python test suite is searched for.
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If the tests argument is omitted, the tests listed on the
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command-line will be used. If that's empty, too, then all *.py
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files beginning with test_ will be used.
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The other seven default arguments (verbose, quiet, generate, exclude,
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single, randomize, and findleaks) allow programmers calling main()
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directly to set the values that would normally be set by flags on the
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command line.
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"""
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try:
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opts, args = getopt.getopt(sys.argv[1:], 'vgqxsrl', ['have-resources'])
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except getopt.error, msg:
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print msg
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print __doc__
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return 2
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for o, a in opts:
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if o == '-v': verbose = verbose+1
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if o == '-q': quiet = 1; verbose = 0
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if o == '-g': generate = 1
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if o == '-x': exclude = 1
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if o == '-s': single = 1
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if o == '-r': randomize = 1
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if o == '-l': findleaks = 1
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if o == '--have-resources': use_large_resources = 1
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if generate and verbose:
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print "-g and -v don't go together!"
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return 2
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good = []
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bad = []
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skipped = []
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if findleaks:
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try:
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import gc
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except ImportError:
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print 'No GC available, disabling findleaks.'
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findleaks = 0
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else:
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# Uncomment the line below to report garbage that is not
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# freeable by reference counting alone. By default only
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# garbage that is not collectable by the GC is reported.
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#gc.set_debug(gc.DEBUG_SAVEALL)
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found_garbage = []
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if single:
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from tempfile import gettempdir
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filename = os.path.join(gettempdir(), 'pynexttest')
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try:
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fp = open(filename, 'r')
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next = fp.read().strip()
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tests = [next]
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fp.close()
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except IOError:
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pass
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for i in range(len(args)):
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# Strip trailing ".py" from arguments
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if args[i][-3:] == '.py':
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args[i] = args[i][:-3]
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stdtests = STDTESTS[:]
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nottests = NOTTESTS[:]
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if exclude:
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for arg in args:
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if arg in stdtests:
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stdtests.remove(arg)
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nottests[:0] = args
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args = []
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tests = tests or args or findtests(testdir, stdtests, nottests)
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if single:
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tests = tests[:1]
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if randomize:
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random.shuffle(tests)
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test_support.verbose = verbose # Tell tests to be moderately quiet
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test_support.use_large_resources = use_large_resources
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save_modules = sys.modules.keys()
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for test in tests:
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if not quiet:
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print test
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ok = runtest(test, generate, verbose, quiet, testdir)
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if ok > 0:
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good.append(test)
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elif ok == 0:
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bad.append(test)
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else:
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skipped.append(test)
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if findleaks:
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gc.collect()
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if gc.garbage:
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print "Warning: test created", len(gc.garbage),
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print "uncollectable object(s)."
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# move the uncollectable objects somewhere so we don't see
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# them again
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found_garbage.extend(gc.garbage)
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del gc.garbage[:]
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# Unload the newly imported modules (best effort finalization)
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for module in sys.modules.keys():
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if module not in save_modules and module.startswith("test."):
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test_support.unload(module)
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if good and not quiet:
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if not bad and not skipped and len(good) > 1:
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print "All",
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print count(len(good), "test"), "OK."
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if verbose:
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print "CAUTION: stdout isn't compared in verbose mode: a test"
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print "that passes in verbose mode may fail without it."
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if bad:
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print count(len(bad), "test"), "failed:",
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print " ".join(bad)
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if skipped and not quiet:
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print count(len(skipped), "test"), "skipped:",
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print " ".join(skipped)
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if single:
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alltests = findtests(testdir, stdtests, nottests)
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for i in range(len(alltests)):
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if tests[0] == alltests[i]:
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if i == len(alltests) - 1:
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os.unlink(filename)
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else:
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fp = open(filename, 'w')
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fp.write(alltests[i+1] + '\n')
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fp.close()
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break
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else:
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os.unlink(filename)
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return len(bad) > 0
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STDTESTS = [
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'test_grammar',
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'test_opcodes',
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'test_operations',
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'test_builtin',
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'test_exceptions',
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'test_types',
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]
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NOTTESTS = [
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'test_support',
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'test_b1',
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'test_b2',
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'test_future1',
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'test_future2',
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]
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def findtests(testdir=None, stdtests=STDTESTS, nottests=NOTTESTS):
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"""Return a list of all applicable test modules."""
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if not testdir: testdir = findtestdir()
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names = os.listdir(testdir)
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tests = []
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for name in names:
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if name[:5] == "test_" and name[-3:] == ".py":
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modname = name[:-3]
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if modname not in stdtests and modname not in nottests:
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tests.append(modname)
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tests.sort()
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return stdtests + tests
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def runtest(test, generate, verbose, quiet, testdir = None):
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"""Run a single test.
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test -- the name of the test
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generate -- if true, generate output, instead of running the test
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and comparing it to a previously created output file
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verbose -- if true, print more messages
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quiet -- if true, don't print 'skipped' messages (probably redundant)
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testdir -- test directory
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"""
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test_support.unload(test)
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if not testdir: testdir = findtestdir()
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outputdir = os.path.join(testdir, "output")
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outputfile = os.path.join(outputdir, test)
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try:
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if generate:
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cfp = StringIO.StringIO()
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elif verbose:
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cfp = sys.stdout
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else:
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cfp = Compare(outputfile)
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except IOError:
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cfp = None
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print "Warning: can't open", outputfile
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try:
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save_stdout = sys.stdout
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try:
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if cfp:
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sys.stdout = cfp
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print test # Output file starts with test name
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the_module = __import__(test, globals(), locals(), [])
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# Most tests run to completion simply as a side-effect of
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# being imported. For the benefit of tests that can't run
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# that way (like test_threaded_import), explicitly invoke
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# their test_main() function (if it exists).
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indirect_test = getattr(the_module, "test_main", None)
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if indirect_test is not None:
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indirect_test()
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if cfp and not (generate or verbose):
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cfp.close()
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finally:
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sys.stdout = save_stdout
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except (ImportError, test_support.TestSkipped), msg:
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if not quiet:
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print "test", test,
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print "skipped -- ", msg
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return -1
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except KeyboardInterrupt:
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raise
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except test_support.TestFailed, msg:
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print "test", test, "failed --", msg
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return 0
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except:
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type, value = sys.exc_info()[:2]
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print "test", test, "crashed --", str(type) + ":", value
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if verbose:
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traceback.print_exc(file=sys.stdout)
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return 0
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else:
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if generate:
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output = cfp.getvalue()
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if output == test + "\n":
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if os.path.exists(outputfile):
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# Write it since it already exists (and the contents
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# may have changed), but let the user know it isn't
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# needed:
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fp = open(outputfile, "w")
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fp.write(output)
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fp.close()
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print "output file", outputfile, \
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"is no longer needed; consider removing it"
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# else:
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# We don't need it, so don't create it.
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else:
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fp = open(outputfile, "w")
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fp.write(output)
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fp.close()
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return 1
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def findtestdir():
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if __name__ == '__main__':
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file = sys.argv[0]
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else:
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file = __file__
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testdir = os.path.dirname(file) or os.curdir
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return testdir
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def count(n, word):
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if n == 1:
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return "%d %s" % (n, word)
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else:
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return "%d %ss" % (n, word)
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class Compare:
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def __init__(self, filename):
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if os.path.exists(filename):
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self.fp = open(filename, 'r')
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else:
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self.fp = StringIO.StringIO(
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os.path.basename(filename) + "\n")
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self.stuffthatmatched = []
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def write(self, data):
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expected = self.fp.read(len(data))
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if data == expected:
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self.stuffthatmatched.append(expected)
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else:
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# This Compare instance is spoofing stdout, so we need to write
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# to stderr instead.
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from sys import stderr as e
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print >> e, "The actual stdout doesn't match the expected stdout."
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if self.stuffthatmatched:
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print >> e, "This much did match (between asterisk lines):"
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print >> e, "*" * 70
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good = "".join(self.stuffthatmatched)
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e.write(good)
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if not good.endswith("\n"):
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e.write("\n")
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print >> e, "*" * 70
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print >> e, "Then ..."
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else:
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print >> e, "The first write to stdout clashed:"
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# Note that the prompts are the same length in next two lines.
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# This is so what we expected and what we got line up.
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print >> e, "We expected (repr):", `expected`
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print >> e, "But instead we got:", `data`
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raise test_support.TestFailed('Writing: ' + `data`+
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', expected: ' + `expected`)
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def writelines(self, listoflines):
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map(self.write, listoflines)
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def flush(self):
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pass
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def close(self):
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leftover = self.fp.read()
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if leftover:
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raise test_support.TestFailed('Tail of expected stdout unseen: ' +
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`leftover`)
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self.fp.close()
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def isatty(self):
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return 0
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if __name__ == '__main__':
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sys.exit(main())
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