--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/run_tests.py	Sat Oct 25 22:53:26 2003 +0000
@@ -0,0 +1,890 @@
+#! /usr/bin/env python2.2
+##############################################################################
+#
+# Copyright (c) 2001, 2002 Zope Corporation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.0 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+"""
+test.py [-aBbcdDfgGhLmprtTuv] [modfilter [testfilter]]
+
+Test harness.
+
+-a level
+--all
+    Run the tests at the given level.  Any test at a level at or below this is
+    run, any test at a level above this is not run.  Level 0 runs all tests.
+    The default is to run tests at level 1.  --all is a shortcut for -a 0.
+
+-b
+--build
+    Run "python setup.py build" before running tests, where "python"
+    is the version of python used to run test.py.  Highly recommended.
+    Tests will be run from the build directory.  (Note: In Python < 2.3
+    the -q flag is added to the setup.py command line.)
+
+-B
+    Run "python setup.py build_ext -i" before running tests.  Tests will be
+    run from the source directory.
+
+-c  use pychecker
+
+-d
+    Instead of the normal test harness, run a debug version which
+    doesn't catch any exceptions.  This is occasionally handy when the
+    unittest code catching the exception doesn't work right.
+    Unfortunately, the debug harness doesn't print the name of the
+    test, so Use With Care.
+
+--dir directory
+    Option to limit where tests are searched for. This is
+    important when you *really* want to limit the code that gets run.
+    For example, if refactoring interfaces, you don't want to see the way
+    you have broken setups for tests in other packages. You *just* want to
+    run the interface tests.
+
+-D
+    Works like -d, except that it loads pdb when an exception occurs.
+
+-f
+    Run functional tests instead of unit tests.
+
+-g threshold
+    Set the garbage collector generation0 threshold.  This can be used to
+    stress memory and gc correctness.  Some crashes are only reproducible when
+    the threshold is set to 1 (agressive garbage collection).  Do "-g 0" to
+    disable garbage collection altogether.
+
+-G gc_option
+    Set the garbage collection debugging flags.  The argument must be one
+    of the DEBUG_ flags defined bythe Python gc module.  Multiple options
+    can be specified by using "-G OPTION1 -G OPTION2."
+
+--libdir test_root
+    Search for tests starting in the specified start directory
+    (useful for testing components being developed outside the main
+    "src" or "build" trees).
+
+--keepbytecode
+    Do not delete all stale bytecode before running tests
+
+-L
+    Keep running the selected tests in a loop.  You may experience
+    memory leakage.
+
+-t
+    Time the individual tests and print a list of the top 50, sorted from
+    longest to shortest.
+
+-p
+    Show running progress.  It can be combined with -v or -vv.
+
+-r
+    Look for refcount problems.
+    This requires that Python was built --with-pydebug.
+
+-T
+    Use the trace module from Python for code coverage.  XXX This only works
+    if trace.py is explicitly added to PYTHONPATH.  The current utility writes
+    coverage files to a directory named `coverage' that is parallel to
+    `build'.  It also prints a summary to stdout.
+
+-v
+    Verbose output.  With one -v, unittest prints a dot (".") for each test
+    run.  With -vv, unittest prints the name of each test (for some definition
+    of "name" ...).  With no -v, unittest is silent until the end of the run,
+    except when errors occur.
+
+    When -p is also specified, the meaning of -v is sligtly changed.  With
+    -p and no -v only the percent indicator is displayed.  With -p and -v
+    the test name of the current test is shown to the right of the percent
+    indicator.  With -p and -vv the test name is not truncated to fit into
+    80 columns and it is not cleared after the test finishes.
+
+-u
+-m
+    Use the PyUnit GUI instead of output to the command line.  The GUI imports
+    tests on its own, taking care to reload all dependencies on each run.  The
+    debug (-d), verbose (-v), progress (-p), and Loop (-L) options will be
+    ignored.  The testfilter filter is also not applied.
+
+    -m starts the gui minimized.  Double-clicking the progress bar will start
+    the import and run all tests.
+
+
+modfilter
+testfilter
+    Case-sensitive regexps to limit which tests are run, used in search
+    (not match) mode.
+    In an extension of Python regexp notation, a leading "!" is stripped
+    and causes the sense of the remaining regexp to be negated (so "!bc"
+    matches any string that does not match "bc", and vice versa).
+    By default these act like ".", i.e. nothing is excluded.
+
+    modfilter is applied to a test file's path, starting at "build" and
+    including (OS-dependent) path separators.
+
+    testfilter is applied to the (method) name of the unittest methods
+    contained in the test files whose paths modfilter matched.
+
+Extreme (yet useful) examples:
+
+    test.py -vvb . "^testWriteClient$"
+
+    Builds the project silently, then runs unittest in verbose mode on all
+    tests whose names are precisely "testWriteClient".  Useful when
+    debugging a specific test.
+
+    test.py -vvb . "!^testWriteClient$"
+
+    As before, but runs all tests whose names aren't precisely
+    "testWriteClient".  Useful to avoid a specific failing test you don't
+    want to deal with just yet.
+
+    test.py -m . "!^testWriteClient$"
+
+    As before, but now opens up a minimized PyUnit GUI window (only showing
+    the progress bar).  Useful for refactoring runs where you continually want
+    to make sure all tests still pass.
+"""
+
+import gc
+import os
+import re
+import pdb
+import sys
+import threading    # just to get at Thread objects created by tests
+import time
+import traceback
+import unittest
+import warnings
+
+from distutils.util import get_platform
+
+PLAT_SPEC = "%s-%s" % (get_platform(), sys.version[0:3])
+
+class ImmediateTestResult(unittest._TextTestResult):
+
+    __super_init = unittest._TextTestResult.__init__
+    __super_startTest = unittest._TextTestResult.startTest
+    __super_printErrors = unittest._TextTestResult.printErrors
+
+    def __init__(self, stream, descriptions, verbosity, debug=False,
+                 count=None, progress=False):
+        self.__super_init(stream, descriptions, verbosity)
+        self._debug = debug
+        self._progress = progress
+        self._progressWithNames = False
+        self._count = count
+        self._testtimes = {}
+        if progress and verbosity == 1:
+            self.dots = False
+            self._progressWithNames = True
+            self._lastWidth = 0
+            self._maxWidth = 80
+            try:
+                import curses
+            except ImportError:
+                pass
+            else:
+                curses.setupterm()
+                self._maxWidth = curses.tigetnum('cols')
+            self._maxWidth -= len("xxxx/xxxx (xxx.x%): ") + 1
+
+    def stopTest(self, test):
+        self._testtimes[test] = time.time() - self._testtimes[test]
+        if gc.garbage:
+            print "The following test left garbage:"
+            print test
+            print gc.garbage
+            # eat the garbage here, so that the garbage isn't
+            # printed for every subsequent test.
+            gc.garbage[:] = []
+
+        # Did the test leave any new threads behind?
+        new_threads = [t for t in threading.enumerate()
+                         if (t.isAlive()
+                             and
+                             t not in self._threads)]
+        if new_threads:
+            print "The following test left new threads behind:"
+            print test
+            print "New thread(s):", new_threads
+
+    def print_times(self, stream, count=None):
+        results = self._testtimes.items()
+        results.sort(lambda x, y: cmp(y[1], x[1]))
+        if count:
+            n = min(count, len(results))
+            if n:
+                print >>stream, "Top %d longest tests:" % n
+        else:
+            n = len(results)
+        if not n:
+            return
+        for i in range(n):
+            print >>stream, "%6dms" % int(results[i][1] * 1000), results[i][0]
+
+    def _print_traceback(self, msg, err, test, errlist):
+        if self.showAll or self.dots or self._progress:
+            self.stream.writeln("\n")
+            self._lastWidth = 0
+
+        tb = "".join(traceback.format_exception(*err))
+        self.stream.writeln(msg)
+        self.stream.writeln(tb)
+        errlist.append((test, tb))
+
+    def startTest(self, test):
+        if self._progress:
+            self.stream.write("\r%4d" % (self.testsRun + 1))
+            if self._count:
+                self.stream.write("/%d (%5.1f%%)" % (self._count,
+                                  (self.testsRun + 1) * 100.0 / self._count))
+            if self.showAll:
+                self.stream.write(": ")
+            elif self._progressWithNames:
+                # XXX will break with multibyte strings
+                name = self.getShortDescription(test)
+                width = len(name)
+                if width < self._lastWidth:
+                    name += " " * (self._lastWidth - width)
+                self.stream.write(": %s" % name)
+                self._lastWidth = width
+            self.stream.flush()
+        self._threads = threading.enumerate()
+        self.__super_startTest(test)
+        self._testtimes[test] = time.time()
+
+    def getShortDescription(self, test):
+        s = self.getDescription(test)
+        if len(s) > self._maxWidth:
+            pos = s.find(" (")
+            if pos >= 0:
+                w = self._maxWidth - (pos + 5)
+                if w < 1:
+                    # first portion (test method name) is too long
+                    s = s[:self._maxWidth-3] + "..."
+                else:
+                    pre = s[:pos+2]
+                    post = s[-w:]
+                    s = "%s...%s" % (pre, post)
+        return s[:self._maxWidth]
+
+    def addError(self, test, err):
+        if self._progress:
+            self.stream.write("\r")
+        if self._debug:
+            raise err[0], err[1], err[2]
+        self._print_traceback("Error in test %s" % test, err,
+                              test, self.errors)
+
+    def addFailure(self, test, err):
+        if self._progress:
+            self.stream.write("\r")
+        if self._debug:
+            raise err[0], err[1], err[2]
+        self._print_traceback("Failure in test %s" % test, err,
+                              test, self.failures)
+
+    def printErrors(self):
+        if self._progress and not (self.dots or self.showAll):
+            self.stream.writeln()
+        self.__super_printErrors()
+
+    def printErrorList(self, flavor, errors):
+        for test, err in errors:
+            self.stream.writeln(self.separator1)
+            self.stream.writeln("%s: %s" % (flavor, self.getDescription(test)))
+            self.stream.writeln(self.separator2)
+            self.stream.writeln(err)
+
+
+class ImmediateTestRunner(unittest.TextTestRunner):
+
+    __super_init = unittest.TextTestRunner.__init__
+
+    def __init__(self, **kwarg):
+        debug = kwarg.get("debug")
+        if debug is not None:
+            del kwarg["debug"]
+        progress = kwarg.get("progress")
+        if progress is not None:
+            del kwarg["progress"]
+        self.__super_init(**kwarg)
+        self._debug = debug
+        self._progress = progress
+
+    def _makeResult(self):
+        return ImmediateTestResult(self.stream, self.descriptions,
+                                   self.verbosity, debug=self._debug,
+                                   count=self._count, progress=self._progress)
+
+    def run(self, test):
+        self._count = test.countTestCases()
+        return unittest.TextTestRunner.run(self, test)
+
+# setup list of directories to put on the path
+class PathInit:
+    def __init__(self, build, build_inplace, libdir=None):
+        self.inplace = None
+        # Figure out if we should test in-place or test in-build.  If the -b
+        # or -B option was given, test in the place we were told to build in.
+        # Otherwise, we'll look for a build directory and if we find one,
+        # we'll test there, otherwise we'll test in-place.
+        if build:
+            self.inplace = build_inplace
+        if self.inplace is None:
+            # Need to figure it out
+            if os.path.isdir(os.path.join("build", "lib.%s" % PLAT_SPEC)):
+                self.inplace = False
+            else:
+                self.inplace = True
+        # Calculate which directories we're going to add to sys.path, and cd
+        # to the appropriate working directory
+        org_cwd = os.getcwd()
+        if self.inplace:
+            self.libdir = "src"
+        else:
+            self.libdir = "lib.%s" % PLAT_SPEC
+            os.chdir("build")
+        # Hack sys.path
+        self.cwd = os.getcwd()
+        sys.path.insert(0, os.path.join(self.cwd, self.libdir))
+        # Hack again for external products.
+        global functional
+        kind = functional and "functional" or "unit"
+        if libdir:
+            extra = os.path.join(org_cwd, libdir)
+            print "Running %s tests from %s" % (kind, extra)
+            self.libdir = extra
+            sys.path.insert(0, extra)
+        else:
+            print "Running %s tests from %s" % (kind, self.cwd)
+        # Make sure functional tests find ftesting.zcml
+        if functional:
+            config_file = 'ftesting.zcml'
+            if not self.inplace:
+                # We chdired into build, so ftesting.zcml is in the
+                # parent directory
+                config_file = os.path.join('..', 'ftesting.zcml')
+            print "Parsing %s" % config_file
+            from zope.testing.functional import FunctionalTestSetup
+            FunctionalTestSetup(config_file)
+
+def match(rx, s):
+    if not rx:
+        return True
+    if rx[0] == "!":
+        return re.search(rx[1:], s) is None
+    else:
+        return re.search(rx, s) is not None
+
+class TestFileFinder:
+    def __init__(self, prefix):
+        self.files = []
+        self._plen = len(prefix)
+        if not prefix.endswith(os.sep):
+            self._plen += 1
+        global functional
+        if functional:
+            self.dirname = "ftest"
+        else:
+            self.dirname = "test"
+
+    def visit(self, rx, dir, files):
+        if os.path.split(dir)[1] != self.dirname:
+            return
+        # ignore tests that aren't in packages
+        if not "__init__.py" in files:
+            if not files or files == ["CVS"]:
+                return
+            print "not a package", dir
+            return
+
+        # Put matching files in matches.  If matches is non-empty,
+        # then make sure that the package is importable.
+        matches = []
+        for file in files:
+            if file.startswith('test') and os.path.splitext(file)[-1] == '.py':
+                path = os.path.join(dir, file)
+                if match(rx, path):
+                    matches.append(path)
+
+        # ignore tests when the package can't be imported, possibly due to
+        # dependency failures.
+        pkg = dir[self._plen:].replace(os.sep, '.')
+        try:
+            __import__(pkg)
+        # We specifically do not want to catch ImportError since that's useful
+        # information to know when running the tests.
+        except RuntimeError, e:
+            if VERBOSE:
+                print "skipping %s because: %s" % (pkg, e)
+            return
+        else:
+            self.files.extend(matches)
+
+    def module_from_path(self, path):
+        """Return the Python package name indicated by the filesystem path."""
+        assert path.endswith(".py")
+        path = path[self._plen:-3]
+        mod = path.replace(os.sep, ".")
+        return mod
+
+def walk_with_symlinks(top, func, arg):
+    """Like os.path.walk, but follows symlinks on POSIX systems.
+
+    This could theoreticaly result in an infinite loop, if you create symlink
+    cycles in your Zope sandbox, so don't do that.
+    """
+    try:
+        names = os.listdir(top)
+    except os.error:
+        return
+    func(arg, top, names)
+    exceptions = ('.', '..')
+    for name in names:
+        if name not in exceptions:
+            name = os.path.join(top, name)
+            if os.path.isdir(name):
+                walk_with_symlinks(name, func, arg)
+
+
+def check_test_dir():
+    global test_dir
+    if test_dir and not os.path.exists(test_dir):
+        d = pathinit.libdir
+        d = os.path.join(d, test_dir)
+        if os.path.exists(d):
+            if not os.path.isdir(d):
+                raise ValueError(
+                    "%s does not exist and %s is not a directory"
+                    % (test_dir, d)
+                    )
+            test_dir = d
+        else:
+            raise ValueError("%s does not exist!" % test_dir)
+
+
+def find_tests(rx):
+    global finder
+    finder = TestFileFinder(pathinit.libdir)
+
+    check_test_dir()
+    walkdir = test_dir or pathinit.libdir
+    walk_with_symlinks(walkdir, finder.visit, rx)
+    return finder.files
+
+def package_import(modname):
+    mod = __import__(modname)
+    for part in modname.split(".")[1:]:
+        mod = getattr(mod, part)
+    return mod
+
+def get_suite(file):
+    modname = finder.module_from_path(file)
+    try:
+        mod = package_import(modname)
+    except ImportError, err:
+        # print traceback
+        print "Error importing %s\n%s" % (modname, err)
+        traceback.print_exc()
+        if debug:
+            raise
+        return None
+    try:
+        suite_func = mod.test_suite
+    except AttributeError:
+        print "No test_suite() in %s" % file
+        return None
+    return suite_func()
+
+def filter_testcases(s, rx):
+    new = unittest.TestSuite()
+    for test in s._tests:
+        # See if the levels match
+        dolevel = (level == 0) or level >= getattr(test, "level", 0)
+        if not dolevel:
+            continue
+        if isinstance(test, unittest.TestCase):
+            name = test.id() # Full test name: package.module.class.method
+            name = name[1 + name.rfind("."):] # extract method name
+            if not rx or match(rx, name):
+                new.addTest(test)
+        else:
+            filtered = filter_testcases(test, rx)
+            if filtered:
+                new.addTest(filtered)
+    return new
+
+def gui_runner(files, test_filter):
+    if build_inplace:
+        utildir = os.path.join(os.getcwd(), "utilities")
+    else:
+        utildir = os.path.join(os.getcwd(), "..", "utilities")
+    sys.path.append(utildir)
+    import unittestgui
+    suites = []
+    for file in files:
+        suites.append(finder.module_from_path(file) + ".test_suite")
+
+    suites = ", ".join(suites)
+    minimal = (GUI == "minimal")
+    unittestgui.main(suites, minimal)
+
+class TrackRefs:
+    """Object to track reference counts across test runs."""
+
+    def __init__(self):
+        self.type2count = {}
+        self.type2all = {}
+
+    def update(self):
+        obs = sys.getobjects(0)
+        type2count = {}
+        type2all = {}
+        for o in obs:
+            all = sys.getrefcount(o)
+            t = type(o)
+            if t in type2count:
+                type2count[t] += 1
+                type2all[t] += all
+            else:
+                type2count[t] = 1
+                type2all[t] = all
+
+        ct = [(type2count[t] - self.type2count.get(t, 0),
+               type2all[t] - self.type2all.get(t, 0),
+               t)
+              for t in type2count.iterkeys()]
+        ct.sort()
+        ct.reverse()
+        for delta1, delta2, t in ct:
+            if delta1 or delta2:
+                print "%-55s %8d %8d" % (t, delta1, delta2)
+
+        self.type2count = type2count
+        self.type2all = type2all
+
+def runner(files, test_filter, debug):
+    runner = ImmediateTestRunner(verbosity=VERBOSE, debug=debug,
+                                 progress=progress)
+    suite = unittest.TestSuite()
+    for file in files:
+        s = get_suite(file)
+        # See if the levels match
+        dolevel = (level == 0) or level >= getattr(s, "level", 0)
+        if s is not None and dolevel:
+            s = filter_testcases(s, test_filter)
+            suite.addTest(s)
+    try:
+        r = runner.run(suite)
+        if timesfn:
+            r.print_times(open(timesfn, "w"))
+            if VERBOSE:
+                print "Wrote timing data to", timesfn
+        if timetests:
+            r.print_times(sys.stdout, timetests)
+    except:
+        if debugger:
+            print "%s:" % (sys.exc_info()[0], )
+            print sys.exc_info()[1]
+            pdb.post_mortem(sys.exc_info()[2])
+        else:
+            raise
+
+def remove_stale_bytecode(arg, dirname, names):
+    names = map(os.path.normcase, names)
+    for name in names:
+        if name.endswith(".pyc") or name.endswith(".pyo"):
+            srcname = name[:-1]
+            if srcname not in names:
+                fullname = os.path.join(dirname, name)
+                print "Removing stale bytecode file", fullname
+                os.unlink(fullname)
+
+def main(module_filter, test_filter, libdir):
+    if not keepStaleBytecode:
+        os.path.walk(os.curdir, remove_stale_bytecode, None)
+
+    # Get the log.ini file from the current directory instead of possibly
+    # buried in the build directory.  XXX This isn't perfect because if
+    # log.ini specifies a log file, it'll be relative to the build directory.
+    # Hmm...
+    logini = os.path.abspath("log.ini")
+
+    # Initialize the path and cwd
+    global pathinit
+    pathinit = PathInit(build, build_inplace, libdir)
+
+    # Initialize the logging module.
+
+    import logging.config
+    logging.basicConfig()
+
+    level = os.getenv("LOGGING")
+    if level:
+        level = int(level)
+    else:
+        level = logging.CRITICAL
+    logging.root.setLevel(level)
+
+    if os.path.exists(logini):
+        logging.config.fileConfig(logini)
+
+    files = find_tests(module_filter)
+    files.sort()
+
+    if GUI:
+        gui_runner(files, test_filter)
+    elif LOOP:
+        if REFCOUNT:
+            rc = sys.gettotalrefcount()
+            track = TrackRefs()
+        while True:
+            runner(files, test_filter, debug)
+            gc.collect()
+            if gc.garbage:
+                print "GARBAGE:", len(gc.garbage), gc.garbage
+                return
+            if REFCOUNT:
+                prev = rc
+                rc = sys.gettotalrefcount()
+                print "totalrefcount=%-8d change=%-6d" % (rc, rc - prev)
+                track.update()
+    else:
+        runner(files, test_filter, debug)
+
+
+def process_args(argv=None):
+    import getopt
+    global module_filter
+    global test_filter
+    global VERBOSE
+    global LOOP
+    global GUI
+    global TRACE
+    global REFCOUNT
+    global debug
+    global debugger
+    global build
+    global level
+    global libdir
+    global timesfn
+    global timetests
+    global progress
+    global build_inplace
+    global keepStaleBytecode
+    global functional
+    global test_dir
+
+    if argv is None:
+        argv = sys.argv
+
+    module_filter = None
+    test_filter = None
+    VERBOSE = 1
+    LOOP = False
+    GUI = False
+    TRACE = False
+    REFCOUNT = False
+    debug = False # Don't collect test results; simply let tests crash
+    debugger = False
+    build = False
+    build_inplace = False
+    gcthresh = None
+    gcdebug = 0
+    gcflags = []
+    level = 1
+    libdir = '.'
+    progress = False
+    timesfn = None
+    timetests = 0
+    keepStaleBytecode = 0
+    functional = False
+    test_dir = None
+
+    try:
+        opts, args = getopt.getopt(argv[1:], "a:bBcdDfg:G:hLmprtTuv",
+                                   ["all", "help", "libdir=", "times=",
+                                    "keepbytecode", "dir=", "build"])
+    except getopt.error, msg:
+        print msg
+        print "Try `python %s -h' for more information." % argv[0]
+        sys.exit(2)
+
+    for k, v in opts:
+        if k == "-a":
+            level = int(v)
+        elif k == "--all":
+            level = 0
+            os.environ["COMPLAIN_IF_TESTS_MISSED"]='1'
+        elif k in ("-b", "--build"):
+            build = True
+        elif k == "-B":
+             build = build_inplace = True
+        elif k == "-c":
+            # make sure you have a recent version of pychecker
+            if not os.environ.get("PYCHECKER"):
+                os.environ["PYCHECKER"] = "-q"
+            import pychecker.checker
+        elif k == "-d":
+            debug = True
+        elif k == "-D":
+            debug = True
+            debugger = True
+        elif k == "-f":
+            functional = True
+        elif k in ("-h", "--help"):
+            print __doc__
+            sys.exit(0)
+        elif k == "-g":
+            gcthresh = int(v)
+        elif k == "-G":
+            if not v.startswith("DEBUG_"):
+                print "-G argument must be DEBUG_ flag, not", repr(v)
+                sys.exit(1)
+            gcflags.append(v)
+        elif k == '--keepbytecode':
+            keepStaleBytecode = 1
+        elif k == '--libdir':
+            libdir = v
+        elif k == "-L":
+            LOOP = 1
+        elif k == "-m":
+            GUI = "minimal"
+        elif k == "-p":
+            progress = True
+        elif k == "-r":
+            if hasattr(sys, "gettotalrefcount"):
+                REFCOUNT = True
+            else:
+                print "-r ignored, because it needs a debug build of Python"
+        elif k == "-T":
+            TRACE = True
+        elif k == "-t":
+            if not timetests:
+                timetests = 50
+        elif k == "-u":
+            GUI = 1
+        elif k == "-v":
+            VERBOSE += 1
+        elif k == "--times":
+            try:
+                timetests = int(v)
+            except ValueError:
+                # must be a filename to write
+                timesfn = v
+        elif k == '--dir':
+            test_dir = v
+
+    if sys.version_info < ( 2,2,3 ):
+	print """\
+	ERROR: Your python version is not supported by Zope3.
+	Zope3 needs either Python2.3 or Python2.2.3 or greater.
+	In particular, Zope3 on Python2.2.2 is a recipe for
+	pain. You are running:""" + sys.version
+	sys.exit(1)
+
+    if gcthresh is not None:
+        if gcthresh == 0:
+            gc.disable()
+            print "gc disabled"
+        else:
+            gc.set_threshold(gcthresh)
+            print "gc threshold:", gc.get_threshold()
+
+    if gcflags:
+        val = 0
+        for flag in gcflags:
+            v = getattr(gc, flag, None)
+            if v is None:
+                print "Unknown gc flag", repr(flag)
+                print gc.set_debug.__doc__
+                sys.exit(1)
+            val |= v
+        gcdebug |= v
+
+    if gcdebug:
+        gc.set_debug(gcdebug)
+
+    if build:
+        # Python 2.3 is more sane in its non -q output
+        if sys.hexversion >= 0x02030000:
+            qflag = ""
+        else:
+            qflag = "-q"
+        cmd = sys.executable + " setup.py " + qflag + " build"
+        if build_inplace:
+            cmd += "_ext -i"
+        if VERBOSE:
+            print cmd
+        sts = os.system(cmd)
+        if sts:
+            print "Build failed", hex(sts)
+            sys.exit(1)
+
+    if VERBOSE:
+        kind = functional and "functional" or "unit"
+        if level == 0:
+            print "Running %s tests at all levels" % kind
+        else:
+            print "Running %s tests at level %d" % (kind, level)
+
+    # XXX We want to change *visible* warnings into errors.  The next
+    # line changes all warnings into errors, including warnings we
+    # normally never see.  In particular, test_datetime does some
+    # short-integer arithmetic that overflows to long ints, and, by
+    # default, Python doesn't display the overflow warning that can
+    # be enabled when this happens.  The next line turns that into an
+    # error instead.  Guido suggests that a better to get what we're
+    # after is to replace warnings.showwarning() with our own thing
+    # that raises an error.
+##    warnings.filterwarnings("error")
+    warnings.filterwarnings("ignore", module="logging")
+
+    if args:
+        if len(args) > 1:
+            test_filter = args[1]
+        module_filter = args[0]
+    try:
+        if TRACE:
+            # if the trace module is used, then we don't exit with
+            # status if on a false return value from main.
+            coverdir = os.path.join(os.getcwd(), "coverage")
+            import trace
+            ignoremods = ["os", "posixpath", "stat"]
+            tracer = trace.Trace(ignoredirs=[sys.prefix, sys.exec_prefix],
+                                 ignoremods=ignoremods,
+                                 trace=False, count=True)
+
+            tracer.runctx("main(module_filter, test_filter, libdir)",
+                          globals=globals(), locals=vars())
+            r = tracer.results()
+            path = "/tmp/trace.%s" % os.getpid()
+            import cPickle
+            f = open(path, "wb")
+            cPickle.dump(r, f)
+            f.close()
+            print path
+            r.write_results(show_missing=True, summary=True, coverdir=coverdir)
+        else:
+            bad = main(module_filter, test_filter, libdir)
+            if bad:
+                sys.exit(1)
+    except ImportError, err:
+        print err
+        print sys.path
+        raise
+
+
+if __name__ == "__main__":
+    process_args()