"""

test configuration(s) for running CPython's regression
test suite on top of PyPy 

"""
import py
import sys
import pypy
import re
from pypy.interpreter.gateway import ApplevelClass 
from pypy.interpreter.error import OperationError
from pypy.interpreter.module import Module as PyPyModule 
from pypy.interpreter.main import run_string, run_file

# the following adds command line options as a side effect! 
from pypy.conftest import gettestobjspace, option as pypy_option 

from pypy.tool.pytest import appsupport 
from pypy.tool.pytest.confpath import pypydir, libpythondir, \
                                      regrtestdir, modregrtestdir, testresultdir

pytest_plugins = "resultlog",
rsyncdirs = ['.', '../pypy/']

# 
# Interfacing/Integrating with py.test's collection process 
#

def pytest_addoption(parser):
    group = parser.getgroup("complicance testing options") 
    group.addoption('-T', '--timeout', action="store", type="string", 
       default="1000", dest="timeout", 
       help="fail a test module after the given timeout. "
            "specify in seconds or 'NUMmp' aka Mega-Pystones")
    group.addoption('--pypy', action="store", type="string",
       dest="pypy",  help="use given pypy executable to run lib-python tests. "
                          "This will run the tests directly (i.e. not through py.py)")
    group.addoption('--filter', action="store", type="string", default=None,
                    dest="unittest_filter",  help="Similar to -k, XXX")

def gettimeout(timeout): 
    from test import pystone
    if timeout.endswith('mp'): 
        megapystone = float(timeout[:-2])
        t, stone = pystone.Proc0(10000)
        pystonetime = t/stone 
        seconds = megapystone  * 1000000 * pystonetime
        return seconds 
    return float(timeout) 

# ________________________________________________________________________
#
# classification of all tests files (this is ongoing work) 
#

class RegrTest: 
    """ Regression Test Declaration.""" 
    def __init__(self, basename, core=False,
                                 compiler=None, 
                                 usemodules = '',
                                 skip=None): 
        self.basename = basename 
        self._usemodules = usemodules.split() + ['signal']
        self._compiler = compiler 
        self.core = core
        self.skip = skip
        assert self.getfspath().check(), "%r not found!" % (basename,)

    def usemodules(self):
        return self._usemodules #+ pypy_option.usemodules
    usemodules = property(usemodules)

    def compiler(self): 
        return self._compiler #or pypy_option.compiler 
    compiler = property(compiler)

    def ismodified(self): 
        return modregrtestdir.join(self.basename).check() 

    def getfspath(self): 
        fn = modregrtestdir.join(self.basename)
        if fn.check(): 
            return fn 
        fn = regrtestdir.join(self.basename)
        return fn 

    def run_file(self, space): 
        fspath = self.getfspath()
        assert fspath.check()
        modname = fspath.purebasename 
        space.appexec([], '''():
            from test import %(modname)s
            m = %(modname)s
            if hasattr(m, 'test_main'):
                m.test_main()
        ''' % locals())

if sys.platform == 'win32':
    skip_win32 = "Not supported on Windows"
    only_win32 = False
else:
    skip_win32 = False
    only_win32 = "Only on Windows"

testmap = [
    RegrTest('test___all__.py', core=True),
    RegrTest('test___future__.py', core=True),
    RegrTest('test__locale.py', skip=skip_win32),
    RegrTest('test_abc.py'),
    RegrTest('test_abstract_numbers.py'),
    RegrTest('test_aepack.py', skip=True),
    RegrTest('test_aifc.py'),
    RegrTest('test_argparse.py'),
    RegrTest('test_al.py', skip=True),
    RegrTest('test_ast.py', core=True),
    RegrTest('test_anydbm.py'),
    RegrTest('test_applesingle.py', skip=True),
    RegrTest('test_array.py', core=True, usemodules='struct array'),
    RegrTest('test_ascii_formatd.py'),
    RegrTest('test_asynchat.py', usemodules='thread'),
    RegrTest('test_asyncore.py'),
    RegrTest('test_atexit.py', core=True),
    RegrTest('test_audioop.py', skip=True),
    RegrTest('test_augassign.py', core=True),
    RegrTest('test_base64.py'),
    RegrTest('test_bastion.py'),
    RegrTest('test_binascii.py', usemodules='binascii'),

    RegrTest('test_binhex.py'),

    RegrTest('test_binop.py', core=True),
    RegrTest('test_bisect.py', core=True, usemodules='_bisect'),
    RegrTest('test_bool.py', core=True),
    RegrTest('test_bsddb.py', skip="unsupported extension module"),
    RegrTest('test_bsddb185.py', skip="unsupported extension module"),
    RegrTest('test_bsddb3.py', skip="unsupported extension module"),
    RegrTest('test_buffer.py'),
    RegrTest('test_bufio.py', core=True),
    RegrTest('test_builtin.py', core=True),
    RegrTest('test_bytes.py'),
    RegrTest('test_bz2.py', usemodules='bz2'),
    RegrTest('test_calendar.py'),
    RegrTest('test_call.py', core=True),
    RegrTest('test_capi.py', skip="not applicable"),
    RegrTest('test_cd.py', skip=True),
    RegrTest('test_cfgparser.py'),

    RegrTest('test_cgi.py'),
    RegrTest('test_charmapcodec.py', core=True),
    RegrTest('test_cl.py', skip=True),
    RegrTest('test_class.py', core=True),
    RegrTest('test_cmath.py', core=True),
    RegrTest('test_cmd.py'),
    RegrTest('test_cmd_line_script.py'),
    RegrTest('test_codeccallbacks.py', core=True),
    RegrTest('test_codecencodings_cn.py', usemodules='_multibytecodec'),
    RegrTest('test_codecencodings_hk.py', usemodules='_multibytecodec'),
    RegrTest('test_codecencodings_jp.py', usemodules='_multibytecodec'),
    RegrTest('test_codecencodings_kr.py', usemodules='_multibytecodec'),
    RegrTest('test_codecencodings_tw.py', usemodules='_multibytecodec'),

    RegrTest('test_codecmaps_cn.py', usemodules='_multibytecodec'),
    RegrTest('test_codecmaps_hk.py', usemodules='_multibytecodec'),
    RegrTest('test_codecmaps_jp.py', usemodules='_multibytecodec'),
    RegrTest('test_codecmaps_kr.py', usemodules='_multibytecodec'),
    RegrTest('test_codecmaps_tw.py', usemodules='_multibytecodec'),
    RegrTest('test_codecs.py', core=True, usemodules='_multibytecodec'),
    RegrTest('test_codeop.py', core=True),
    RegrTest('test_coercion.py', core=True),
    RegrTest('test_collections.py'),
    RegrTest('test_colorsys.py'),
    RegrTest('test_commands.py'),
    RegrTest('test_compare.py', core=True),
    RegrTest('test_compile.py', core=True),
    RegrTest('test_compileall.py'),
    RegrTest('test_compiler.py', core=False, skip="slowly deprecating compiler"),
    RegrTest('test_complex.py', core=True),

    RegrTest('test_contains.py', core=True),
    RegrTest('test_cookie.py'),
    RegrTest('test_cookielib.py'),
    RegrTest('test_copy.py', core=True),
    RegrTest('test_copy_reg.py', core=True),
    RegrTest('test_cpickle.py', core=True),
    RegrTest('test_cprofile.py'), 
    RegrTest('test_crypt.py', usemodules='crypt', skip=skip_win32),
    RegrTest('test_csv.py'),

    RegrTest('test_curses.py', skip="unsupported extension module"),
    RegrTest('test_datetime.py'),
    RegrTest('test_dbm.py'),
    RegrTest('test_decimal.py'),
    RegrTest('test_decorators.py', core=True),
    RegrTest('test_deque.py', core=True, usemodules='_collections'),
    RegrTest('test_descr.py', core=True, usemodules='_weakref'),
    RegrTest('test_descrtut.py', core=True),
    RegrTest('test_dict.py', core=True),
    RegrTest('test_dictcomps.py', core=True),
    RegrTest('test_dictviews.py', core=True),
    RegrTest('test_difflib.py'),
    RegrTest('test_dircache.py', core=True),
    RegrTest('test_dis.py'),
    RegrTest('test_distutils.py', skip=True),
    RegrTest('test_dl.py', skip=True),
    RegrTest('test_doctest.py', usemodules="thread"),
    RegrTest('test_doctest2.py'),
    RegrTest('test_docxmlrpc.py'),
    RegrTest('test_dumbdbm.py'),
    RegrTest('test_dummy_thread.py', core=True),
    RegrTest('test_dummy_threading.py', core=True),
    RegrTest('test_email.py'),

    RegrTest('test_email_codecs.py'),
    RegrTest('test_enumerate.py', core=True),
    RegrTest('test_eof.py', core=True),
    RegrTest('test_epoll.py'),
    RegrTest('test_errno.py', usemodules="errno"),
    RegrTest('test_exceptions.py', core=True),
    RegrTest('test_extcall.py', core=True),
    RegrTest('test_fcntl.py', usemodules='fcntl', skip=skip_win32),
    RegrTest('test_file.py', usemodules="posix", core=True),
    RegrTest('test_file2k.py', usemodules="posix", core=True),
    RegrTest('test_filecmp.py', core=True),
    RegrTest('test_fileinput.py', core=True),
    RegrTest('test_fileio.py'),
    RegrTest('test_fnmatch.py', core=True),
    RegrTest('test_fork1.py', usemodules="thread"),
    RegrTest('test_format.py', core=True),
    RegrTest('test_fpformat.py', core=True),
    RegrTest('test_fractions.py'),
    RegrTest('test_frozen.py', skip="unsupported extension module"),
    RegrTest('test_ftplib.py'),
    RegrTest('test_funcattrs.py', core=True),
    RegrTest('test_future.py', core=True),
    RegrTest('test_future1.py', core=True),
    RegrTest('test_future2.py', core=True),
    RegrTest('test_future3.py', core=True),
    RegrTest('test_future4.py', core=True),
    RegrTest('test_future5.py', core=True),
    RegrTest('test_future_builtins.py'),
    RegrTest('test_gc.py', usemodules='_weakref', skip="implementation detail"),
    RegrTest('test_gdb.py', skip="not applicable"),
    RegrTest('test_gdbm.py', skip="unsupported extension module"),
    RegrTest('test_generators.py', core=True, usemodules='thread _weakref'),
    RegrTest('test_genericpath.py'),
    RegrTest('test_genexps.py', core=True, usemodules='_weakref'),
    RegrTest('test_getargs.py', skip="unsupported extension module"),
    RegrTest('test_getargs2.py', skip="unsupported extension module"),

    RegrTest('test_getopt.py', core=True),
    RegrTest('test_gettext.py'),

    RegrTest('test_gl.py', skip=True),
    RegrTest('test_glob.py', core=True),
    RegrTest('test_global.py', core=True),
    RegrTest('test_grammar.py', core=True),
    RegrTest('test_grp.py', skip=skip_win32),

    RegrTest('test_gzip.py'),
    RegrTest('test_hash.py', core=True),
    RegrTest('test_hashlib.py', core=True),
    
    RegrTest('test_heapq.py', core=True),
    RegrTest('test_hmac.py'),
    RegrTest('test_hotshot.py', skip="unsupported extension module"),

    RegrTest('test_htmllib.py'),
    RegrTest('test_htmlparser.py'),
    RegrTest('test_httplib.py'),
    RegrTest('test_httpservers.py'),
    RegrTest('test_imageop.py', skip="unsupported extension module"),
    RegrTest('test_imaplib.py'),
    RegrTest('test_imgfile.py', skip="unsupported extension module"),
    RegrTest('test_imp.py', core=True, usemodules='thread'),
    RegrTest('test_import.py', core=True),
    RegrTest('test_importhooks.py', core=True),
    RegrTest('test_importlib.py'),
    RegrTest('test_inspect.py'),
    RegrTest('test_int.py', core=True),
    RegrTest('test_int_literal.py', core=True),
    RegrTest('test_io.py'),
    RegrTest('test_ioctl.py'),
    RegrTest('test_isinstance.py', core=True),
    RegrTest('test_iter.py', core=True),
    RegrTest('test_iterlen.py', skip="undocumented internal API behavior __length_hint__"),
    RegrTest('test_itertools.py', core=True),
    RegrTest('test_json.py'),
    RegrTest('test_kqueue.py'),
    RegrTest('test_largefile.py'),
    RegrTest('test_lib2to3.py'),
    RegrTest('test_linecache.py'),
    RegrTest('test_linuxaudiodev.py', skip="unsupported extension module"),
    RegrTest('test_list.py', core=True),
    RegrTest('test_locale.py', usemodules="_locale"),
    RegrTest('test_logging.py', usemodules='thread'),
    RegrTest('test_long.py', core=True),
    RegrTest('test_long_future.py', core=True),
    RegrTest('test_longexp.py', core=True),
    RegrTest('test_macos.py'),
    RegrTest('test_macostools.py', skip=True),
    RegrTest('test_macpath.py'),
    RegrTest('test_mailbox.py'),
    RegrTest('test_marshal.py', core=True),
    RegrTest('test_math.py', core=True, usemodules='math'),
    RegrTest('test_memoryio.py'),
    RegrTest('test_memoryview.py'),
    RegrTest('test_md5.py'),
    RegrTest('test_mhlib.py'),
    RegrTest('test_mimetools.py'),
    RegrTest('test_mimetypes.py'),
    RegrTest('test_MimeWriter.py', core=False),
    RegrTest('test_minidom.py'),
    RegrTest('test_mmap.py'),
    RegrTest('test_module.py', core=True),
    RegrTest('test_modulefinder.py'),
    RegrTest('test_msilib.py', skip=only_win32),
    RegrTest('test_multibytecodec.py', usemodules='_multibytecodec'),
    RegrTest('test_multibytecodec_support.py', skip="not a test"),
    RegrTest('test_multifile.py'),
    RegrTest('test_multiprocessing.py', skip="FIXME leaves subprocesses"),
    RegrTest('test_mutants.py', core="possibly"),
    RegrTest('test_mutex.py'),
    RegrTest('test_netrc.py'),
    RegrTest('test_new.py', core=True),
    RegrTest('test_nis.py', skip="unsupported extension module"),
    RegrTest('test_normalization.py'),
    RegrTest('test_ntpath.py'),
    RegrTest('test_opcodes.py', core=True),
    RegrTest('test_openpty.py'),
    RegrTest('test_operator.py', core=True),
    RegrTest('test_optparse.py'),

    RegrTest('test_os.py', core=True),
    RegrTest('test_ossaudiodev.py', skip="unsupported extension module"),
    RegrTest('test_parser.py', skip="slowly deprecating compiler"),
    RegrTest('test_pdb.py'),
    RegrTest('test_peepholer.py'),
    RegrTest('test_pep247.py'),
    RegrTest('test_pep263.py'),
    RegrTest('test_pep277.py'),
    RegrTest('test_pep292.py'),
    RegrTest('test_pickle.py', core=True),
    RegrTest('test_pickletools.py', core=False),
    RegrTest('test_pipes.py'),
    RegrTest('test_pkg.py', core=True),
    RegrTest('test_pkgimport.py', core=True),
    RegrTest('test_pkgutil.py'),
    RegrTest('test_plistlib.py', skip="unsupported module"),
    RegrTest('test_poll.py', skip=skip_win32),
    RegrTest('test_popen.py'),
    RegrTest('test_popen2.py'),
    RegrTest('test_poplib.py'),
    RegrTest('test_posix.py', usemodules="_rawffi"),
    RegrTest('test_posixpath.py'),
    RegrTest('test_pow.py', core=True),
    RegrTest('test_pprint.py', core=True),
    RegrTest('test_print.py', core=True),
    RegrTest('test_profile.py'),
    RegrTest('test_property.py', core=True),
    RegrTest('test_pstats.py'),
    RegrTest('test_pty.py', skip="unsupported extension module"),
    RegrTest('test_pwd.py', usemodules="pwd", skip=skip_win32),
    RegrTest('test_py3kwarn.py'),
    RegrTest('test_pyclbr.py'),
    RegrTest('test_pydoc.py'),
    RegrTest('test_pyexpat.py'),
    RegrTest('test_queue.py', usemodules='thread'),
    RegrTest('test_quopri.py'),
    RegrTest('test_random.py'),
    RegrTest('test_re.py', core=True),
    RegrTest('test_readline.py'),
    RegrTest('test_repr.py', core=True),
    RegrTest('test_resource.py', skip=skip_win32),
    RegrTest('test_rfc822.py'),
    RegrTest('test_richcmp.py', core=True),
    RegrTest('test_rlcompleter.py'),

    RegrTest('test_robotparser.py'),
    RegrTest('test_sax.py'),
    RegrTest('test_scope.py', core=True),
    RegrTest('test_scriptpackages.py', skip="unsupported extension module"),
    RegrTest('test_select.py'),
    RegrTest('test_set.py', core=True),
    RegrTest('test_sets.py'),
    RegrTest('test_setcomps.py', core=True),
    RegrTest('test_sgmllib.py'),
    RegrTest('test_sha.py'),
    RegrTest('test_shelve.py'),
    RegrTest('test_shlex.py'),
    RegrTest('test_shutil.py'),
    RegrTest('test_signal.py'),
    RegrTest('test_SimpleHTTPServer.py'),
    RegrTest('test_site.py', core=False),
    RegrTest('test_slice.py', core=True),
    RegrTest('test_smtplib.py'),
    RegrTest('test_smtpnet.py'),
    RegrTest('test_socket.py', usemodules='thread _weakref'),

    RegrTest('test_socketserver.py', usemodules='thread'),

    RegrTest('test_softspace.py', core=True),
    RegrTest('test_sort.py', core=True),
    RegrTest('test_ssl.py', usemodules='_ssl _socket select'),
    RegrTest('test_str.py', core=True),

    RegrTest('test_strftime.py'),
    RegrTest('test_string.py', core=True),
    RegrTest('test_StringIO.py', core=True, usemodules='cStringIO'),
    RegrTest('test_stringprep.py'),
    RegrTest('test_strop.py', skip="deprecated"),

    RegrTest('test_strptime.py'),
    RegrTest('test_strtod.py'),
    RegrTest('test_struct.py', usemodules='struct'),
    RegrTest('test_structmembers.py', skip="CPython specific"),
    RegrTest('test_structseq.py'),
    RegrTest('test_subprocess.py', usemodules='signal'),
    RegrTest('test_sunaudiodev.py', skip=True),
    RegrTest('test_sundry.py'),
    RegrTest('test_symtable.py', skip="implementation detail"),
    RegrTest('test_syntax.py', core=True),
    RegrTest('test_sys.py', core=True, usemodules='struct'),
    RegrTest('test_sys_settrace.py', core=True),
    RegrTest('test_sys_setprofile.py', core=True),
    RegrTest('test_sysconfig.py'),
    RegrTest('test_tcl.py', skip="unsupported extension module"),
    RegrTest('test_tarfile.py'),
    RegrTest('test_telnetlib.py'),
    RegrTest('test_tempfile.py'),

    RegrTest('test_textwrap.py'),
    RegrTest('test_thread.py', usemodules="thread", core=True),
    RegrTest('test_threaded_import.py', usemodules="thread", core=True),
    RegrTest('test_threadedtempfile.py', 
             usemodules="thread", core=False),

    RegrTest('test_threading.py', usemodules="thread", core=True),
    RegrTest('test_threading_local.py', usemodules="thread", core=True),
    RegrTest('test_threadsignals.py', usemodules="thread"),

    RegrTest('test_time.py', core=True),
    RegrTest('test_timeout.py'),
    RegrTest('test_tk.py'),
    RegrTest('test_ttk_guionly.py'),
    RegrTest('test_ttk_textonly.py'),
    RegrTest('test_tokenize.py'),
    RegrTest('test_trace.py'),
    RegrTest('test_traceback.py', core=True),
    RegrTest('test_transformer.py', core=True),
    RegrTest('test_tuple.py', core=True),
    RegrTest('test_typechecks.py'),
    RegrTest('test_types.py', core=True),
    RegrTest('test_ucn.py'),
    RegrTest('test_unary.py', core=True),
    RegrTest('test_undocumented_details.py'),
    RegrTest('test_unicode.py', core=True),
    RegrTest('test_unicode_file.py'),
    RegrTest('test_unicodedata.py'),
    RegrTest('test_unittest.py', core=True),
    RegrTest('test_univnewlines.py'),
    RegrTest('test_univnewlines2k.py', core=True),
    RegrTest('test_unpack.py', core=True),
    RegrTest('test_urllib.py'),
    RegrTest('test_urllib2.py'),
    RegrTest('test_urllib2net.py'),
    RegrTest('test_urllibnet.py'),
    RegrTest('test_urlparse.py'),
    RegrTest('test_userdict.py', core=True),
    RegrTest('test_userlist.py', core=True),
    RegrTest('test_userstring.py', core=True),
    RegrTest('test_uu.py'),

    RegrTest('test_warnings.py', core=True),
    RegrTest('test_wave.py', skip="unsupported extension module"),
    RegrTest('test_weakref.py', core=True, usemodules='_weakref'),
    RegrTest('test_weakset.py'),

    RegrTest('test_whichdb.py'),
    RegrTest('test_winreg.py', skip=only_win32),
    RegrTest('test_winsound.py', skip="unsupported extension module"),
    RegrTest('test_xmllib.py'),
    RegrTest('test_xmlrpc.py'),

    RegrTest('test_xpickle.py'),
    RegrTest('test_xrange.py', core=True),
    RegrTest('test_zipfile.py'),
    RegrTest('test_zipimport.py', usemodules='zlib zipimport'),
    RegrTest('test_zipimport_support.py', usemodules='zlib zipimport'),
    RegrTest('test_zlib.py', usemodules='zlib'),

    RegrTest('test_bigaddrspace.py'),
    RegrTest('test_bigmem.py'),
    RegrTest('test_cmd_line.py'),
    RegrTest('test_code.py'),
    RegrTest('test_coding.py'),
    RegrTest('test_complex_args.py'),
    RegrTest('test_contextlib.py', usemodules="thread"),
    RegrTest('test_ctypes.py', usemodules="_rawffi thread"),
    RegrTest('test_defaultdict.py', usemodules='_collections'),
    RegrTest('test_email_renamed.py'),
    RegrTest('test_exception_variations.py'),
    RegrTest('test_float.py'),
    RegrTest('test_functools.py'),
    RegrTest('test_index.py'),
    RegrTest('test_old_mailbox.py'),
    RegrTest('test_pep352.py'),
    RegrTest('test_platform.py'),
    RegrTest('test_runpy.py'),
    RegrTest('test_sqlite.py', usemodules="thread _rawffi zlib"),
    RegrTest('test_startfile.py', skip="bogus test"),
    RegrTest('test_structmembers.py', skip="depends on _testcapi"),
    RegrTest('test_urllib2_localnet.py', usemodules="thread"),
    RegrTest('test_uuid.py'),
    RegrTest('test_wait3.py', usemodules="thread"),
    RegrTest('test_wait4.py', usemodules="thread"),
    RegrTest('test_with.py'),
    RegrTest('test_wsgiref.py'),
    RegrTest('test_xdrlib.py'),
    RegrTest('test_xml_etree.py'),
    RegrTest('test_xml_etree_c.py'),
    RegrTest('test_zipfile64.py'),
]

def check_testmap_complete():
    listed_names = dict.fromkeys([regrtest.basename for regrtest in testmap])
    listed_names['test_support.py'] = True     # ignore this
    missing = []
    for path in regrtestdir.listdir(fil='test_*.py'):
        name = path.basename
        if name not in listed_names:
            missing.append('    RegrTest(%r),' % (name,))
    missing.sort()
    assert not missing, "non-listed tests:\n%s" % ('\n'.join(missing),)
check_testmap_complete()

def pytest_configure(config):
    config._basename2spec = cache = {}
    for x in testmap: 
        cache[x.basename] = x

def pytest_collect_file(path, parent, __multicall__):
    # don't collect files except through this hook
    # implemented by clearing the list of to-be-called
    # remaining hook methods
    __multicall__.methods[:] = []
    regrtest = parent.config._basename2spec.get(path.basename, None)
    if regrtest is None:
        return
    if path.dirpath() not in (modregrtestdir, regrtestdir):
        return
    return RunFileExternal(path.basename, parent=parent, regrtest=regrtest)

class RunFileExternal(py.test.collect.File):
    def __init__(self, name, parent, regrtest): 
        super(RunFileExternal, self).__init__(name, parent) 
        self.regrtest = regrtest 
        self.fspath = regrtest.getfspath()

    def collect(self): 
        if self.regrtest.ismodified(): 
            name = 'modified'
        else:
            name = 'unmodified'
        return [ReallyRunFileExternal(name, parent=self)] 

#
# testmethod: 
# invoking in a separate process: py.py TESTFILE
#
import os
import time
import getpass

class ReallyRunFileExternal(py.test.collect.Item): 
    class ExternalFailure(Exception):
        """Failure in running subprocess"""

    def getinvocation(self, regrtest): 
        fspath = regrtest.getfspath() 
        python = sys.executable 
        pypy_script = pypydir.join('bin', 'py.py')
        alarm_script = pypydir.join('tool', 'alarm.py')
        if sys.platform == 'win32':
            watchdog_name = 'watchdog_nt.py'
        else:
            watchdog_name = 'watchdog.py'
        watchdog_script = pypydir.join('tool', watchdog_name)

        regr_script = pypydir.join('tool', 'pytest', 
                                   'run-script', 'regrverbose.py')
        
        regrrun = str(regr_script)
        option = self.config.option
        TIMEOUT = gettimeout(option.timeout.lower())
        if option.pypy:
            execpath = py.path.local(option.pypy)
            if not execpath.check():
                execpath = py.path.local.sysfind(option.pypy)
            if not execpath:
                raise LookupError("could not find executable %r" %
                                  (option.pypy,))

            # check modules
            info = py.process.cmdexec("%s --info" % execpath)
            for mod in regrtest.usemodules:
                if "objspace.usemodules.%s: False" % mod in info:
                    py.test.skip("%s module not included in %s" % (mod,
                                                                   execpath))
                    
            cmd = "%s %s %s" %(
                execpath, 
                regrrun, fspath.purebasename)

            # add watchdog for timing out
            cmd = "%s %s %s %s" %(
                python, watchdog_script, TIMEOUT,
                cmd)
        else:
            pypy_options = []
            pypy_options.extend(
                ['--withmod-%s' % mod for mod in regrtest.usemodules])
            sopt = " ".join(pypy_options) 
            cmd = "%s %s %d %s -S %s %s %s -v" %(
                python, alarm_script, TIMEOUT, 
                pypy_script, sopt, 
                regrrun, fspath.purebasename)
        return cmd 

    def runtest(self): 
        """ invoke a subprocess running the test file via PyPy. 
            record its output into the 'result/user@host' subdirectory. 
            (we might want to create subdirectories for 
            each user, because we will probably all produce 
            such result runs and they will not be the same
            i am afraid. 
        """ 
        regrtest = self.parent.regrtest
        if regrtest.skip:
            if regrtest.skip is True:
                msg = "obsolete or unsupported platform"
            else:
                msg = regrtest.skip
            py.test.skip(msg)
        (skipped, exit_status, test_stdout,
                               test_stderr) = self.getresult(regrtest)
        if skipped:
            py.test.skip(test_stderr.splitlines()[-1])
        if exit_status:
            raise self.ExternalFailure(test_stdout, test_stderr)

    def repr_failure(self, excinfo):
        if not excinfo.errisinstance(self.ExternalFailure):
            return super(ReallyRunFileExternal, self).repr_failure(excinfo)
        out, err = excinfo.value.args
        return out + err

    def getstatusouterr(self, cmd): 
        tempdir = py.test.ensuretemp(self.fspath.basename)
        stdout = tempdir.join(self.fspath.basename) + '.out'
        stderr = tempdir.join(self.fspath.basename) + '.err'
        if sys.platform == 'win32':
            status = os.system("%s >%s 2>%s" %(cmd, stdout, stderr))
            if status>=0:
                status = status
            else:
                status = 'abnormal termination 0x%x' % status
        else:
            if self.config.option.unittest_filter is not None:
                cmd += ' --filter %s' % self.config.option.unittest_filter
            if self.config.option.usepdb:
                cmd += ' --pdb'
            if self.config.option.capture == 'no':
                status = os.system(cmd)
                stdout.write('')
                stderr.write('')
            else:
                status = os.system("%s >>%s 2>>%s" %(cmd, stdout, stderr))
            if os.WIFEXITED(status):
                status = os.WEXITSTATUS(status)
            else:
                status = 'abnormal termination 0x%x' % status
        return status, stdout.read(mode='rU'), stderr.read(mode='rU')

    def getresult(self, regrtest): 
        cmd = self.getinvocation(regrtest)
        tempdir = py.test.ensuretemp(self.fspath.basename)
        oldcwd = tempdir.chdir()
        exit_status, test_stdout, test_stderr = self.getstatusouterr(cmd)
        oldcwd.chdir()
        skipped = False
        timedout = test_stderr.rfind(26*"=" + "timedout" + 26*"=") != -1 
        if not timedout: 
            timedout = test_stderr.rfind("KeyboardInterrupt") != -1
        if test_stderr.rfind(26*"=" + "skipped" + 26*"=") != -1:
            skipped = True
        outcome = 'OK'
        if not exit_status:
            # match "FAIL" but not e.g. "FAILURE", which is in the output of a
            # test in test_zipimport_support.py
            if re.search(r'\bFAIL\b', test_stdout) or re.search('[^:]ERROR', test_stderr):
                outcome = 'FAIL'
                exit_status = 2  
        elif timedout: 
            outcome = "T/O"    
        else: 
            outcome = "ERR"
        
        return skipped, exit_status, test_stdout, test_stderr

    def _keywords(self):
        lst = list(py.test.collect.Item._keywords(self))
        regrtest = self.parent.regrtest
        if regrtest.core:
            lst.append('core')
        return lst

#
# Sanity check  (could be done more nicely too)
#
import os
samefile = getattr(os.path, 'samefile', 
                   lambda x,y : str(x) == str(y))
if samefile(os.getcwd(), str(regrtestdir.dirpath())):
    raise NotImplementedError(
        "Cannot run py.test with this current directory:\n"
        "the app-level sys.path will contain %s before %s)." % (
            regrtestdir.dirpath(), modregrtestdir.dirpath()))
