1 from __future__ import print_function
2 # Common utilities and Python wrappers for qemu-iotests
4 # Copyright (C) 2012 IBM Corp.
6 # This program is free software; you can redistribute it and/or modify
7 # it under the terms of the GNU General Public License as published by
8 # the Free Software Foundation; either version 2 of the License, or
9 # (at your option) any later version.
11 # This program is distributed in the hope that it will be useful,
12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 # GNU General Public License for more details.
16 # You should have received a copy of the GNU General Public License
17 # along with this program. If not, see <http://www.gnu.org/licenses/>.
33 from collections import OrderedDict
35 sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'scripts'))
39 # This will not work if arguments contain spaces but is necessary if we
40 # want to support the override options that ./check supports.
41 qemu_img_args = [os.environ.get('QEMU_IMG_PROG', 'qemu-img')]
42 if os.environ.get('QEMU_IMG_OPTIONS'):
43 qemu_img_args += os.environ['QEMU_IMG_OPTIONS'].strip().split(' ')
45 qemu_io_args = [os.environ.get('QEMU_IO_PROG', 'qemu-io')]
46 if os.environ.get('QEMU_IO_OPTIONS'):
47 qemu_io_args += os.environ['QEMU_IO_OPTIONS'].strip().split(' ')
49 qemu_nbd_args = [os.environ.get('QEMU_NBD_PROG', 'qemu-nbd')]
50 if os.environ.get('QEMU_NBD_OPTIONS'):
51 qemu_nbd_args += os.environ['QEMU_NBD_OPTIONS'].strip().split(' ')
53 qemu_prog = os.environ.get('QEMU_PROG', 'qemu')
54 qemu_opts = os.environ.get('QEMU_OPTIONS', '').strip().split(' ')
56 imgfmt = os.environ.get('IMGFMT', 'raw')
57 imgproto = os.environ.get('IMGPROTO', 'file')
58 test_dir = os.environ.get('TEST_DIR')
59 output_dir = os.environ.get('OUTPUT_DIR', '.')
60 cachemode = os.environ.get('CACHEMODE')
61 qemu_default_machine = os.environ.get('QEMU_DEFAULT_MACHINE')
63 socket_scm_helper = os.environ.get('SOCKET_SCM_HELPER', 'socket_scm_helper')
66 luks_default_secret_object = 'secret,id=keysec0,data=' + \
67 os.environ.get('IMGKEYSECRET', '')
68 luks_default_key_secret_opt = 'key-secret=keysec0'
72 '''Run qemu-img and return the exit code'''
73 devnull = open('/dev/null', 'r+')
74 exitcode = subprocess.call(qemu_img_args + list(args), stdin=devnull, stdout=devnull)
76 sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
79 def ordered_qmp(qmsg, conv_keys=True):
80 # Dictionaries are not ordered prior to 3.6, therefore:
81 if isinstance(qmsg, list):
82 return [ordered_qmp(atom) for atom in qmsg]
83 if isinstance(qmsg, dict):
85 for k, v in sorted(qmsg.items()):
87 k = k.replace('_', '-')
88 od[k] = ordered_qmp(v, conv_keys=False)
92 def qemu_img_create(*args):
95 # default luks support
96 if '-f' in args and args[args.index('-f') + 1] == 'luks':
99 if 'key-secret' not in args[i + 1]:
100 args[i + 1].append(luks_default_key_secret_opt)
101 args.insert(i + 2, '--object')
102 args.insert(i + 3, luks_default_secret_object)
104 args = ['-o', luks_default_key_secret_opt,
105 '--object', luks_default_secret_object] + args
107 args.insert(0, 'create')
109 return qemu_img(*args)
111 def qemu_img_verbose(*args):
112 '''Run qemu-img without suppressing its output and return the exit code'''
113 exitcode = subprocess.call(qemu_img_args + list(args))
115 sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
118 def qemu_img_pipe(*args):
119 '''Run qemu-img and return its output'''
120 subp = subprocess.Popen(qemu_img_args + list(args),
121 stdout=subprocess.PIPE,
122 stderr=subprocess.STDOUT,
123 universal_newlines=True)
124 exitcode = subp.wait()
126 sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args))))
127 return subp.communicate()[0]
129 def img_info_log(filename, filter_path=None, imgopts=False, extra_args=[]):
132 args.append('--image-opts')
134 args += [ '-f', imgfmt ]
136 args.append(filename)
138 output = qemu_img_pipe(*args)
140 filter_path = filename
141 log(filter_img_info(output, filter_path))
144 '''Run qemu-io and return the stdout data'''
145 args = qemu_io_args + list(args)
146 subp = subprocess.Popen(args, stdout=subprocess.PIPE,
147 stderr=subprocess.STDOUT,
148 universal_newlines=True)
149 exitcode = subp.wait()
151 sys.stderr.write('qemu-io received signal %i: %s\n' % (-exitcode, ' '.join(args)))
152 return subp.communicate()[0]
154 def qemu_io_silent(*args):
155 '''Run qemu-io and return the exit code, suppressing stdout'''
156 args = qemu_io_args + list(args)
157 exitcode = subprocess.call(args, stdout=open('/dev/null', 'w'))
159 sys.stderr.write('qemu-io received signal %i: %s\n' %
160 (-exitcode, ' '.join(args)))
164 class QemuIoInteractive:
165 def __init__(self, *args):
166 self.args = qemu_io_args + list(args)
167 self._p = subprocess.Popen(self.args, stdin=subprocess.PIPE,
168 stdout=subprocess.PIPE,
169 stderr=subprocess.STDOUT,
170 universal_newlines=True)
171 assert self._p.stdout.read(9) == 'qemu-io> '
174 self._p.communicate('q\n')
176 def _read_output(self):
177 pattern = 'qemu-io> '
182 c = self._p.stdout.read(1)
183 # check unexpected EOF
186 if c == pattern[pos]:
191 return ''.join(s[:-n])
194 # quit command is in close(), '\n' is added automatically
195 assert '\n' not in cmd
197 assert cmd != 'q' and cmd != 'quit'
198 self._p.stdin.write(cmd + '\n')
199 self._p.stdin.flush()
200 return self._read_output()
204 '''Run qemu-nbd in daemon mode and return the parent's exit code'''
205 return subprocess.call(qemu_nbd_args + ['--fork'] + list(args))
207 def qemu_nbd_pipe(*args):
208 '''Run qemu-nbd in daemon mode and return both the parent's exit code
210 subp = subprocess.Popen(qemu_nbd_args + ['--fork'] + list(args),
211 stdout=subprocess.PIPE,
212 stderr=subprocess.STDOUT,
213 universal_newlines=True)
214 exitcode = subp.wait()
216 sys.stderr.write('qemu-nbd received signal %i: %s\n' %
218 ' '.join(qemu_nbd_args + ['--fork'] + list(args))))
219 return exitcode, subp.communicate()[0]
221 def compare_images(img1, img2, fmt1=imgfmt, fmt2=imgfmt):
222 '''Return True if two image files are identical'''
223 return qemu_img('compare', '-f', fmt1,
224 '-F', fmt2, img1, img2) == 0
226 def create_image(name, size):
227 '''Create a fully-allocated raw image with sector markers'''
228 file = open(name, 'wb')
231 sector = struct.pack('>l504xl', i // 512, i // 512)
237 '''Return image's virtual size'''
238 r = qemu_img_pipe('info', '--output=json', '-f', imgfmt, img)
239 return json.loads(r)['virtual-size']
242 if sys.version_info.major >= 3:
243 return isinstance(val, str)
245 return isinstance(val, str) or isinstance(val, unicode)
247 test_dir_re = re.compile(r"%s" % test_dir)
248 def filter_test_dir(msg):
249 return test_dir_re.sub("TEST_DIR", msg)
251 win32_re = re.compile(r"\r")
252 def filter_win32(msg):
253 return win32_re.sub("", msg)
255 qemu_io_re = re.compile(r"[0-9]* ops; [0-9\/:. sec]* \([0-9\/.inf]* [EPTGMKiBbytes]*\/sec and [0-9\/.inf]* ops\/sec\)")
256 def filter_qemu_io(msg):
257 msg = filter_win32(msg)
258 return qemu_io_re.sub("X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)", msg)
260 chown_re = re.compile(r"chown [0-9]+:[0-9]+")
261 def filter_chown(msg):
262 return chown_re.sub("chown UID:GID", msg)
264 def filter_qmp_event(event):
265 '''Filter a QMP event dict'''
267 if 'timestamp' in event:
268 event['timestamp']['seconds'] = 'SECS'
269 event['timestamp']['microseconds'] = 'USECS'
272 def filter_qmp(qmsg, filter_fn):
273 '''Given a string filter, filter a QMP object's values.
274 filter_fn takes a (key, value) pair.'''
275 # Iterate through either lists or dicts;
276 if isinstance(qmsg, list):
277 items = enumerate(qmsg)
282 if isinstance(v, list) or isinstance(v, dict):
283 qmsg[k] = filter_qmp(v, filter_fn)
285 qmsg[k] = filter_fn(k, v)
288 def filter_testfiles(msg):
289 prefix = os.path.join(test_dir, "%s-" % (os.getpid()))
290 return msg.replace(prefix, 'TEST_DIR/PID-')
292 def filter_qmp_testfiles(qmsg):
293 def _filter(key, value):
295 return filter_testfiles(value)
297 return filter_qmp(qmsg, _filter)
299 def filter_generated_node_ids(msg):
300 return re.sub("#block[0-9]+", "NODE_NAME", msg)
302 def filter_img_info(output, filename):
304 for line in output.split('\n'):
305 if 'disk size' in line or 'actual-size' in line:
307 line = line.replace(filename, 'TEST_IMG') \
308 .replace(imgfmt, 'IMGFMT')
309 line = re.sub('iters: [0-9]+', 'iters: XXX', line)
310 line = re.sub('uuid: [-a-f0-9]+', 'uuid: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', line)
311 line = re.sub('cid: [0-9]+', 'cid: XXXXXXXXXX', line)
313 return '\n'.join(lines)
315 def filter_imgfmt(msg):
316 return msg.replace(imgfmt, 'IMGFMT')
318 def filter_qmp_imgfmt(qmsg):
319 def _filter(key, value):
321 return filter_imgfmt(value)
323 return filter_qmp(qmsg, _filter)
325 def log(msg, filters=[], indent=None):
326 '''Logs either a string message or a JSON serializable message (like QMP).
327 If indent is provided, JSON serializable messages are pretty-printed.'''
330 if isinstance(msg, dict) or isinstance(msg, list):
331 # Python < 3.4 needs to know not to add whitespace when pretty-printing:
332 separators = (', ', ': ') if indent is None else (',', ': ')
333 # Don't sort if it's already sorted
334 do_sort = not isinstance(msg, OrderedDict)
335 print(json.dumps(msg, sort_keys=do_sort,
336 indent=indent, separators=separators))
341 def __init__(self, seconds, errmsg = "Timeout"):
342 self.seconds = seconds
345 signal.signal(signal.SIGALRM, self.timeout)
346 signal.setitimer(signal.ITIMER_REAL, self.seconds)
348 def __exit__(self, type, value, traceback):
349 signal.setitimer(signal.ITIMER_REAL, 0)
351 def timeout(self, signum, frame):
352 raise Exception(self.errmsg)
355 class FilePath(object):
356 '''An auto-generated filename that cleans itself up.
358 Use this context manager to generate filenames and ensure that the file
361 with TestFilePath('test.img') as img_path:
362 qemu_img('create', img_path, '1G')
363 # migration_sock_path is automatically deleted
365 def __init__(self, name):
366 filename = '{0}-{1}'.format(os.getpid(), name)
367 self.path = os.path.join(test_dir, filename)
372 def __exit__(self, exc_type, exc_val, exc_tb):
380 def file_path_remover():
381 for path in reversed(file_path_remover.paths):
388 def file_path(*names):
389 ''' Another way to get auto-generated filename that cleans itself up.
393 img_a, img_b = file_path('a.img', 'b.img')
394 sock = file_path('socket')
397 if not hasattr(file_path_remover, 'paths'):
398 file_path_remover.paths = []
399 atexit.register(file_path_remover)
403 filename = '{0}-{1}'.format(os.getpid(), name)
404 path = os.path.join(test_dir, filename)
405 file_path_remover.paths.append(path)
408 return paths[0] if len(paths) == 1 else paths
410 def remote_filename(path):
411 if imgproto == 'file':
413 elif imgproto == 'ssh':
414 return "ssh://127.0.0.1%s" % (path)
416 raise Exception("Protocol %s not supported" % (imgproto))
418 class VM(qtest.QEMUQtestMachine):
421 def __init__(self, path_suffix=''):
422 name = "qemu%s-%d" % (path_suffix, os.getpid())
423 super(VM, self).__init__(qemu_prog, qemu_opts, name=name,
425 socket_scm_helper=socket_scm_helper)
428 def add_object(self, opts):
429 self._args.append('-object')
430 self._args.append(opts)
433 def add_device(self, opts):
434 self._args.append('-device')
435 self._args.append(opts)
438 def add_drive_raw(self, opts):
439 self._args.append('-drive')
440 self._args.append(opts)
443 def add_drive(self, path, opts='', interface='virtio', format=imgfmt):
444 '''Add a virtio-blk drive to the VM'''
445 options = ['if=%s' % interface,
446 'id=drive%d' % self._num_drives]
449 options.append('file=%s' % path)
450 options.append('format=%s' % format)
451 options.append('cache=%s' % cachemode)
456 if format == 'luks' and 'key-secret' not in opts:
457 # default luks support
458 if luks_default_secret_object not in self._args:
459 self.add_object(luks_default_secret_object)
461 options.append(luks_default_key_secret_opt)
463 self._args.append('-drive')
464 self._args.append(','.join(options))
465 self._num_drives += 1
468 def add_blockdev(self, opts):
469 self._args.append('-blockdev')
470 if isinstance(opts, str):
471 self._args.append(opts)
473 self._args.append(','.join(opts))
476 def add_incoming(self, addr):
477 self._args.append('-incoming')
478 self._args.append(addr)
481 def pause_drive(self, drive, event=None):
482 '''Pause drive r/w operations'''
484 self.pause_drive(drive, "read_aio")
485 self.pause_drive(drive, "write_aio")
487 self.qmp('human-monitor-command',
488 command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive))
490 def resume_drive(self, drive):
491 self.qmp('human-monitor-command',
492 command_line='qemu-io %s "remove_break bp_%s"' % (drive, drive))
494 def hmp_qemu_io(self, drive, cmd):
495 '''Write to a given drive using an HMP command'''
496 return self.qmp('human-monitor-command',
497 command_line='qemu-io %s "%s"' % (drive, cmd))
499 def flatten_qmp_object(self, obj, output=None, basestr=''):
502 if isinstance(obj, list):
503 for i in range(len(obj)):
504 self.flatten_qmp_object(obj[i], output, basestr + str(i) + '.')
505 elif isinstance(obj, dict):
507 self.flatten_qmp_object(obj[key], output, basestr + key + '.')
509 output[basestr[:-1]] = obj # Strip trailing '.'
512 def qmp_to_opts(self, obj):
513 obj = self.flatten_qmp_object(obj)
516 output_list += [key + '=' + obj[key]]
517 return ','.join(output_list)
519 def get_qmp_events_filtered(self, wait=True):
521 for ev in self.get_qmp_events(wait=wait):
522 result.append(filter_qmp_event(ev))
525 def qmp_log(self, cmd, filters=[], indent=None, **kwargs):
526 full_cmd = OrderedDict((
528 ("arguments", ordered_qmp(kwargs))
530 log(full_cmd, filters, indent=indent)
531 result = self.qmp(cmd, **kwargs)
532 log(result, filters, indent=indent)
535 # Returns None on success, and an error string on failure
536 def run_job(self, job, auto_finalize=True, auto_dismiss=False):
539 for ev in self.get_qmp_events_filtered(wait=True):
540 if ev['event'] == 'JOB_STATUS_CHANGE':
541 status = ev['data']['status']
542 if status == 'aborting':
543 result = self.qmp('query-jobs')
544 for j in result['return']:
547 log('Job failed: %s' % (j['error']))
548 elif status == 'pending' and not auto_finalize:
549 self.qmp_log('job-finalize', id=job)
550 elif status == 'concluded' and not auto_dismiss:
551 self.qmp_log('job-dismiss', id=job)
552 elif status == 'null':
557 def node_info(self, node_name):
558 nodes = self.qmp('query-named-block-nodes')
559 for x in nodes['return']:
560 if x['node-name'] == node_name:
565 index_re = re.compile(r'([^\[]+)\[([^\]]+)\]')
567 class QMPTestCase(unittest.TestCase):
568 '''Abstract base class for QMP test cases'''
570 def dictpath(self, d, path):
571 '''Traverse a path in a nested dict'''
572 for component in path.split('/'):
573 m = index_re.match(component)
575 component, idx = m.groups()
578 if not isinstance(d, dict) or component not in d:
579 self.fail('failed path traversal for "%s" in "%s"' % (path, str(d)))
583 if not isinstance(d, list):
584 self.fail('path component "%s" in "%s" is not a list in "%s"' % (component, path, str(d)))
588 self.fail('invalid index "%s" in path "%s" in "%s"' % (idx, path, str(d)))
591 def assert_qmp_absent(self, d, path):
593 result = self.dictpath(d, path)
594 except AssertionError:
596 self.fail('path "%s" has value "%s"' % (path, str(result)))
598 def assert_qmp(self, d, path, value):
599 '''Assert that the value for a specific path in a QMP dict matches'''
600 result = self.dictpath(d, path)
601 self.assertEqual(result, value, 'values not equal "%s" and "%s"' % (str(result), str(value)))
603 def assert_no_active_block_jobs(self):
604 result = self.vm.qmp('query-block-jobs')
605 self.assert_qmp(result, 'return', [])
607 def assert_has_block_node(self, node_name=None, file_name=None):
608 """Issue a query-named-block-nodes and assert node_name and/or
609 file_name is present in the result"""
610 def check_equal_or_none(a, b):
611 return a == None or b == None or a == b
612 assert node_name or file_name
613 result = self.vm.qmp('query-named-block-nodes')
614 for x in result["return"]:
615 if check_equal_or_none(x.get("node-name"), node_name) and \
616 check_equal_or_none(x.get("file"), file_name):
618 self.assertTrue(False, "Cannot find %s %s in result:\n%s" % \
619 (node_name, file_name, result))
621 def assert_json_filename_equal(self, json_filename, reference):
622 '''Asserts that the given filename is a json: filename and that its
623 content is equal to the given reference object'''
624 self.assertEqual(json_filename[:5], 'json:')
625 self.assertEqual(self.vm.flatten_qmp_object(json.loads(json_filename[5:])),
626 self.vm.flatten_qmp_object(reference))
628 def cancel_and_wait(self, drive='drive0', force=False, resume=False):
629 '''Cancel a block job and wait for it to finish, returning the event'''
630 result = self.vm.qmp('block-job-cancel', device=drive, force=force)
631 self.assert_qmp(result, 'return', {})
634 self.vm.resume_drive(drive)
639 for event in self.vm.get_qmp_events(wait=True):
640 if event['event'] == 'BLOCK_JOB_COMPLETED' or \
641 event['event'] == 'BLOCK_JOB_CANCELLED':
642 self.assert_qmp(event, 'data/device', drive)
645 elif event['event'] == 'JOB_STATUS_CHANGE':
646 self.assert_qmp(event, 'data/id', drive)
649 self.assert_no_active_block_jobs()
652 def wait_until_completed(self, drive='drive0', check_offset=True):
653 '''Wait for a block job to finish, returning the event'''
655 for event in self.vm.get_qmp_events(wait=True):
656 if event['event'] == 'BLOCK_JOB_COMPLETED':
657 self.assert_qmp(event, 'data/device', drive)
658 self.assert_qmp_absent(event, 'data/error')
660 self.assert_qmp(event, 'data/offset', event['data']['len'])
661 self.assert_no_active_block_jobs()
663 elif event['event'] == 'JOB_STATUS_CHANGE':
664 self.assert_qmp(event, 'data/id', drive)
666 def wait_ready(self, drive='drive0'):
667 '''Wait until a block job BLOCK_JOB_READY event'''
668 f = {'data': {'type': 'mirror', 'device': drive } }
669 event = self.vm.event_wait(name='BLOCK_JOB_READY', match=f)
671 def wait_ready_and_cancel(self, drive='drive0'):
672 self.wait_ready(drive=drive)
673 event = self.cancel_and_wait(drive=drive)
674 self.assertEqual(event['event'], 'BLOCK_JOB_COMPLETED')
675 self.assert_qmp(event, 'data/type', 'mirror')
676 self.assert_qmp(event, 'data/offset', event['data']['len'])
678 def complete_and_wait(self, drive='drive0', wait_ready=True):
679 '''Complete a block job and wait for it to finish'''
681 self.wait_ready(drive=drive)
683 result = self.vm.qmp('block-job-complete', device=drive)
684 self.assert_qmp(result, 'return', {})
686 event = self.wait_until_completed(drive=drive)
687 self.assert_qmp(event, 'data/type', 'mirror')
689 def pause_wait(self, job_id='job0'):
690 with Timeout(1, "Timeout waiting for job to pause"):
692 result = self.vm.qmp('query-block-jobs')
694 for job in result['return']:
695 if job['device'] == job_id:
697 if job['paused'] == True and job['busy'] == False:
702 def pause_job(self, job_id='job0', wait=True):
703 result = self.vm.qmp('block-job-pause', device=job_id)
704 self.assert_qmp(result, 'return', {})
706 return self.pause_wait(job_id)
711 '''Skip this test suite'''
712 # Each test in qemu-iotests has a number ("seq")
713 seq = os.path.basename(sys.argv[0])
715 open('%s/%s.notrun' % (output_dir, seq), 'wb').write(reason + '\n')
716 print('%s not run: %s' % (seq, reason))
719 def verify_image_format(supported_fmts=[], unsupported_fmts=[]):
720 assert not (supported_fmts and unsupported_fmts)
722 if 'generic' in supported_fmts and \
723 os.environ.get('IMGFMT_GENERIC', 'true') == 'true':
725 # _supported_fmt generic
729 not_sup = supported_fmts and (imgfmt not in supported_fmts)
730 if not_sup or (imgfmt in unsupported_fmts):
731 notrun('not suitable for this image format: %s' % imgfmt)
733 def verify_protocol(supported=[], unsupported=[]):
734 assert not (supported and unsupported)
736 if 'generic' in supported:
739 not_sup = supported and (imgproto not in supported)
740 if not_sup or (imgproto in unsupported):
741 notrun('not suitable for this protocol: %s' % imgproto)
743 def verify_platform(supported_oses=['linux']):
744 if True not in [sys.platform.startswith(x) for x in supported_oses]:
745 notrun('not suitable for this OS: %s' % sys.platform)
747 def verify_cache_mode(supported_cache_modes=[]):
748 if supported_cache_modes and (cachemode not in supported_cache_modes):
749 notrun('not suitable for this cache mode: %s' % cachemode)
751 def supports_quorum():
752 return 'quorum' in qemu_img_pipe('--help')
755 '''Skip test suite if quorum support is not available'''
756 if not supports_quorum():
757 notrun('quorum support missing')
759 def main(supported_fmts=[], supported_oses=['linux'], supported_cache_modes=[],
760 unsupported_fmts=[]):
765 # We are using TEST_DIR and QEMU_DEFAULT_MACHINE as proxies to
766 # indicate that we're not being run via "check". There may be
767 # other things set up by "check" that individual test cases rely
769 if test_dir is None or qemu_default_machine is None:
770 sys.stderr.write('Please run this test via the "check" script\n')
771 sys.exit(os.EX_USAGE)
773 debug = '-d' in sys.argv
775 verify_image_format(supported_fmts, unsupported_fmts)
776 verify_platform(supported_oses)
777 verify_cache_mode(supported_cache_modes)
782 sys.argv.remove('-d')
784 # We need to filter out the time taken from the output so that
785 # qemu-iotest can reliably diff the results against master output.
786 if sys.version_info.major >= 3:
787 output = io.StringIO()
789 # io.StringIO is for unicode strings, which is not what
790 # 2.x's test runner emits.
791 output = io.BytesIO()
793 logging.basicConfig(level=(logging.DEBUG if debug else logging.WARN))
795 class MyTestRunner(unittest.TextTestRunner):
796 def __init__(self, stream=output, descriptions=True, verbosity=verbosity):
797 unittest.TextTestRunner.__init__(self, stream, descriptions, verbosity)
799 # unittest.main() will use sys.exit() so expect a SystemExit exception
801 unittest.main(testRunner=MyTestRunner)
804 sys.stderr.write(re.sub(r'Ran (\d+) tests? in [\d.]+s', r'Ran \1 tests', output.getvalue()))