1from __future__ import print_function 2# Common utilities and Python wrappers for qemu-iotests 3# 4# Copyright (C) 2012 IBM Corp. 5# 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. 10# 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. 15# 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/>. 18# 19 20import errno 21import os 22import re 23import subprocess 24import string 25import unittest 26import sys 27import struct 28import json 29import signal 30import logging 31import atexit 32 33sys.path.append(os.path.join(os.path.dirname(__file__), '..', '..', 'scripts')) 34import qtest 35 36 37# This will not work if arguments contain spaces but is necessary if we 38# want to support the override options that ./check supports. 39qemu_img_args = [os.environ.get('QEMU_IMG_PROG', 'qemu-img')] 40if os.environ.get('QEMU_IMG_OPTIONS'): 41 qemu_img_args += os.environ['QEMU_IMG_OPTIONS'].strip().split(' ') 42 43qemu_io_args = [os.environ.get('QEMU_IO_PROG', 'qemu-io')] 44if os.environ.get('QEMU_IO_OPTIONS'): 45 qemu_io_args += os.environ['QEMU_IO_OPTIONS'].strip().split(' ') 46 47qemu_nbd_args = [os.environ.get('QEMU_NBD_PROG', 'qemu-nbd')] 48if os.environ.get('QEMU_NBD_OPTIONS'): 49 qemu_nbd_args += os.environ['QEMU_NBD_OPTIONS'].strip().split(' ') 50 51qemu_prog = os.environ.get('QEMU_PROG', 'qemu') 52qemu_opts = os.environ.get('QEMU_OPTIONS', '').strip().split(' ') 53 54imgfmt = os.environ.get('IMGFMT', 'raw') 55imgproto = os.environ.get('IMGPROTO', 'file') 56test_dir = os.environ.get('TEST_DIR') 57output_dir = os.environ.get('OUTPUT_DIR', '.') 58cachemode = os.environ.get('CACHEMODE') 59qemu_default_machine = os.environ.get('QEMU_DEFAULT_MACHINE') 60 61socket_scm_helper = os.environ.get('SOCKET_SCM_HELPER', 'socket_scm_helper') 62debug = False 63 64luks_default_secret_object = 'secret,id=keysec0,data=' + \ 65 os.environ['IMGKEYSECRET'] 66luks_default_key_secret_opt = 'key-secret=keysec0' 67 68 69def qemu_img(*args): 70 '''Run qemu-img and return the exit code''' 71 devnull = open('/dev/null', 'r+') 72 exitcode = subprocess.call(qemu_img_args + list(args), stdin=devnull, stdout=devnull) 73 if exitcode < 0: 74 sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args)))) 75 return exitcode 76 77def qemu_img_create(*args): 78 args = list(args) 79 80 # default luks support 81 if '-f' in args and args[args.index('-f') + 1] == 'luks': 82 if '-o' in args: 83 i = args.index('-o') 84 if 'key-secret' not in args[i + 1]: 85 args[i + 1].append(luks_default_key_secret_opt) 86 args.insert(i + 2, '--object') 87 args.insert(i + 3, luks_default_secret_object) 88 else: 89 args = ['-o', luks_default_key_secret_opt, 90 '--object', luks_default_secret_object] + args 91 92 args.insert(0, 'create') 93 94 return qemu_img(*args) 95 96def qemu_img_verbose(*args): 97 '''Run qemu-img without suppressing its output and return the exit code''' 98 exitcode = subprocess.call(qemu_img_args + list(args)) 99 if exitcode < 0: 100 sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args)))) 101 return exitcode 102 103def qemu_img_pipe(*args): 104 '''Run qemu-img and return its output''' 105 subp = subprocess.Popen(qemu_img_args + list(args), 106 stdout=subprocess.PIPE, 107 stderr=subprocess.STDOUT) 108 exitcode = subp.wait() 109 if exitcode < 0: 110 sys.stderr.write('qemu-img received signal %i: %s\n' % (-exitcode, ' '.join(qemu_img_args + list(args)))) 111 return subp.communicate()[0] 112 113def img_info_log(filename, filter_path=None, imgopts=False, extra_args=[]): 114 args = [ 'info' ] 115 if imgopts: 116 args.append('--image-opts') 117 else: 118 args += [ '-f', imgfmt ] 119 args += extra_args 120 args.append(filename) 121 122 output = qemu_img_pipe(*args) 123 if not filter_path: 124 filter_path = filename 125 log(filter_img_info(output, filter_path)) 126 127def qemu_io(*args): 128 '''Run qemu-io and return the stdout data''' 129 args = qemu_io_args + list(args) 130 subp = subprocess.Popen(args, stdout=subprocess.PIPE, 131 stderr=subprocess.STDOUT) 132 exitcode = subp.wait() 133 if exitcode < 0: 134 sys.stderr.write('qemu-io received signal %i: %s\n' % (-exitcode, ' '.join(args))) 135 return subp.communicate()[0] 136 137def qemu_io_silent(*args): 138 '''Run qemu-io and return the exit code, suppressing stdout''' 139 args = qemu_io_args + list(args) 140 exitcode = subprocess.call(args, stdout=open('/dev/null', 'w')) 141 if exitcode < 0: 142 sys.stderr.write('qemu-io received signal %i: %s\n' % 143 (-exitcode, ' '.join(args))) 144 return exitcode 145 146 147class QemuIoInteractive: 148 def __init__(self, *args): 149 self.args = qemu_io_args + list(args) 150 self._p = subprocess.Popen(self.args, stdin=subprocess.PIPE, 151 stdout=subprocess.PIPE, 152 stderr=subprocess.STDOUT) 153 assert self._p.stdout.read(9) == 'qemu-io> ' 154 155 def close(self): 156 self._p.communicate('q\n') 157 158 def _read_output(self): 159 pattern = 'qemu-io> ' 160 n = len(pattern) 161 pos = 0 162 s = [] 163 while pos != n: 164 c = self._p.stdout.read(1) 165 # check unexpected EOF 166 assert c != '' 167 s.append(c) 168 if c == pattern[pos]: 169 pos += 1 170 else: 171 pos = 0 172 173 return ''.join(s[:-n]) 174 175 def cmd(self, cmd): 176 # quit command is in close(), '\n' is added automatically 177 assert '\n' not in cmd 178 cmd = cmd.strip() 179 assert cmd != 'q' and cmd != 'quit' 180 self._p.stdin.write(cmd + '\n') 181 return self._read_output() 182 183 184def qemu_nbd(*args): 185 '''Run qemu-nbd in daemon mode and return the parent's exit code''' 186 return subprocess.call(qemu_nbd_args + ['--fork'] + list(args)) 187 188def compare_images(img1, img2, fmt1=imgfmt, fmt2=imgfmt): 189 '''Return True if two image files are identical''' 190 return qemu_img('compare', '-f', fmt1, 191 '-F', fmt2, img1, img2) == 0 192 193def create_image(name, size): 194 '''Create a fully-allocated raw image with sector markers''' 195 file = open(name, 'w') 196 i = 0 197 while i < size: 198 sector = struct.pack('>l504xl', i / 512, i / 512) 199 file.write(sector) 200 i = i + 512 201 file.close() 202 203def image_size(img): 204 '''Return image's virtual size''' 205 r = qemu_img_pipe('info', '--output=json', '-f', imgfmt, img) 206 return json.loads(r)['virtual-size'] 207 208test_dir_re = re.compile(r"%s" % test_dir) 209def filter_test_dir(msg): 210 return test_dir_re.sub("TEST_DIR", msg) 211 212win32_re = re.compile(r"\r") 213def filter_win32(msg): 214 return win32_re.sub("", msg) 215 216qemu_io_re = re.compile(r"[0-9]* ops; [0-9\/:. sec]* \([0-9\/.inf]* [EPTGMKiBbytes]*\/sec and [0-9\/.inf]* ops\/sec\)") 217def filter_qemu_io(msg): 218 msg = filter_win32(msg) 219 return qemu_io_re.sub("X ops; XX:XX:XX.X (XXX YYY/sec and XXX ops/sec)", msg) 220 221chown_re = re.compile(r"chown [0-9]+:[0-9]+") 222def filter_chown(msg): 223 return chown_re.sub("chown UID:GID", msg) 224 225def filter_qmp_event(event): 226 '''Filter a QMP event dict''' 227 event = dict(event) 228 if 'timestamp' in event: 229 event['timestamp']['seconds'] = 'SECS' 230 event['timestamp']['microseconds'] = 'USECS' 231 return event 232 233def filter_testfiles(msg): 234 prefix = os.path.join(test_dir, "%s-" % (os.getpid())) 235 return msg.replace(prefix, 'TEST_DIR/PID-') 236 237def filter_img_info(output, filename): 238 lines = [] 239 for line in output.split('\n'): 240 if 'disk size' in line or 'actual-size' in line: 241 continue 242 line = line.replace(filename, 'TEST_IMG') \ 243 .replace(imgfmt, 'IMGFMT') 244 line = re.sub('iters: [0-9]+', 'iters: XXX', line) 245 line = re.sub('uuid: [-a-f0-9]+', 'uuid: XXXXXXXX-XXXX-XXXX-XXXX-XXXXXXXXXXXX', line) 246 lines.append(line) 247 return '\n'.join(lines) 248 249def log(msg, filters=[]): 250 for flt in filters: 251 msg = flt(msg) 252 print(msg) 253 254class Timeout: 255 def __init__(self, seconds, errmsg = "Timeout"): 256 self.seconds = seconds 257 self.errmsg = errmsg 258 def __enter__(self): 259 signal.signal(signal.SIGALRM, self.timeout) 260 signal.setitimer(signal.ITIMER_REAL, self.seconds) 261 return self 262 def __exit__(self, type, value, traceback): 263 signal.setitimer(signal.ITIMER_REAL, 0) 264 return False 265 def timeout(self, signum, frame): 266 raise Exception(self.errmsg) 267 268 269class FilePath(object): 270 '''An auto-generated filename that cleans itself up. 271 272 Use this context manager to generate filenames and ensure that the file 273 gets deleted:: 274 275 with TestFilePath('test.img') as img_path: 276 qemu_img('create', img_path, '1G') 277 # migration_sock_path is automatically deleted 278 ''' 279 def __init__(self, name): 280 filename = '{0}-{1}'.format(os.getpid(), name) 281 self.path = os.path.join(test_dir, filename) 282 283 def __enter__(self): 284 return self.path 285 286 def __exit__(self, exc_type, exc_val, exc_tb): 287 try: 288 os.remove(self.path) 289 except OSError: 290 pass 291 return False 292 293 294def file_path_remover(): 295 for path in reversed(file_path_remover.paths): 296 try: 297 os.remove(path) 298 except OSError: 299 pass 300 301 302def file_path(*names): 303 ''' Another way to get auto-generated filename that cleans itself up. 304 305 Use is as simple as: 306 307 img_a, img_b = file_path('a.img', 'b.img') 308 sock = file_path('socket') 309 ''' 310 311 if not hasattr(file_path_remover, 'paths'): 312 file_path_remover.paths = [] 313 atexit.register(file_path_remover) 314 315 paths = [] 316 for name in names: 317 filename = '{0}-{1}'.format(os.getpid(), name) 318 path = os.path.join(test_dir, filename) 319 file_path_remover.paths.append(path) 320 paths.append(path) 321 322 return paths[0] if len(paths) == 1 else paths 323 324def remote_filename(path): 325 if imgproto == 'file': 326 return path 327 elif imgproto == 'ssh': 328 return "ssh://127.0.0.1%s" % (path) 329 else: 330 raise Exception("Protocol %s not supported" % (imgproto)) 331 332class VM(qtest.QEMUQtestMachine): 333 '''A QEMU VM''' 334 335 def __init__(self, path_suffix=''): 336 name = "qemu%s-%d" % (path_suffix, os.getpid()) 337 super(VM, self).__init__(qemu_prog, qemu_opts, name=name, 338 test_dir=test_dir, 339 socket_scm_helper=socket_scm_helper) 340 self._num_drives = 0 341 342 def add_object(self, opts): 343 self._args.append('-object') 344 self._args.append(opts) 345 return self 346 347 def add_device(self, opts): 348 self._args.append('-device') 349 self._args.append(opts) 350 return self 351 352 def add_drive_raw(self, opts): 353 self._args.append('-drive') 354 self._args.append(opts) 355 return self 356 357 def add_drive(self, path, opts='', interface='virtio', format=imgfmt): 358 '''Add a virtio-blk drive to the VM''' 359 options = ['if=%s' % interface, 360 'id=drive%d' % self._num_drives] 361 362 if path is not None: 363 options.append('file=%s' % path) 364 options.append('format=%s' % format) 365 options.append('cache=%s' % cachemode) 366 367 if opts: 368 options.append(opts) 369 370 if format == 'luks' and 'key-secret' not in opts: 371 # default luks support 372 if luks_default_secret_object not in self._args: 373 self.add_object(luks_default_secret_object) 374 375 options.append(luks_default_key_secret_opt) 376 377 self._args.append('-drive') 378 self._args.append(','.join(options)) 379 self._num_drives += 1 380 return self 381 382 def add_blockdev(self, opts): 383 self._args.append('-blockdev') 384 if isinstance(opts, str): 385 self._args.append(opts) 386 else: 387 self._args.append(','.join(opts)) 388 return self 389 390 def add_incoming(self, addr): 391 self._args.append('-incoming') 392 self._args.append(addr) 393 return self 394 395 def pause_drive(self, drive, event=None): 396 '''Pause drive r/w operations''' 397 if not event: 398 self.pause_drive(drive, "read_aio") 399 self.pause_drive(drive, "write_aio") 400 return 401 self.qmp('human-monitor-command', 402 command_line='qemu-io %s "break %s bp_%s"' % (drive, event, drive)) 403 404 def resume_drive(self, drive): 405 self.qmp('human-monitor-command', 406 command_line='qemu-io %s "remove_break bp_%s"' % (drive, drive)) 407 408 def hmp_qemu_io(self, drive, cmd): 409 '''Write to a given drive using an HMP command''' 410 return self.qmp('human-monitor-command', 411 command_line='qemu-io %s "%s"' % (drive, cmd)) 412 413 def flatten_qmp_object(self, obj, output=None, basestr=''): 414 if output is None: 415 output = dict() 416 if isinstance(obj, list): 417 for i in range(len(obj)): 418 self.flatten_qmp_object(obj[i], output, basestr + str(i) + '.') 419 elif isinstance(obj, dict): 420 for key in obj: 421 self.flatten_qmp_object(obj[key], output, basestr + key + '.') 422 else: 423 output[basestr[:-1]] = obj # Strip trailing '.' 424 return output 425 426 def qmp_to_opts(self, obj): 427 obj = self.flatten_qmp_object(obj) 428 output_list = list() 429 for key in obj: 430 output_list += [key + '=' + obj[key]] 431 return ','.join(output_list) 432 433 def get_qmp_events_filtered(self, wait=True): 434 result = [] 435 for ev in self.get_qmp_events(wait=wait): 436 result.append(filter_qmp_event(ev)) 437 return result 438 439 def qmp_log(self, cmd, filters=[filter_testfiles], **kwargs): 440 logmsg = "{'execute': '%s', 'arguments': %s}" % (cmd, kwargs) 441 log(logmsg, filters) 442 result = self.qmp(cmd, **kwargs) 443 log(str(result), filters) 444 return result 445 446 def run_job(self, job, auto_finalize=True, auto_dismiss=False): 447 while True: 448 for ev in self.get_qmp_events_filtered(wait=True): 449 if ev['event'] == 'JOB_STATUS_CHANGE': 450 status = ev['data']['status'] 451 if status == 'aborting': 452 result = self.qmp('query-jobs') 453 for j in result['return']: 454 if j['id'] == job: 455 log('Job failed: %s' % (j['error'])) 456 elif status == 'pending' and not auto_finalize: 457 self.qmp_log('job-finalize', id=job) 458 elif status == 'concluded' and not auto_dismiss: 459 self.qmp_log('job-dismiss', id=job) 460 elif status == 'null': 461 return 462 else: 463 iotests.log(ev) 464 465 466index_re = re.compile(r'([^\[]+)\[([^\]]+)\]') 467 468class QMPTestCase(unittest.TestCase): 469 '''Abstract base class for QMP test cases''' 470 471 def dictpath(self, d, path): 472 '''Traverse a path in a nested dict''' 473 for component in path.split('/'): 474 m = index_re.match(component) 475 if m: 476 component, idx = m.groups() 477 idx = int(idx) 478 479 if not isinstance(d, dict) or component not in d: 480 self.fail('failed path traversal for "%s" in "%s"' % (path, str(d))) 481 d = d[component] 482 483 if m: 484 if not isinstance(d, list): 485 self.fail('path component "%s" in "%s" is not a list in "%s"' % (component, path, str(d))) 486 try: 487 d = d[idx] 488 except IndexError: 489 self.fail('invalid index "%s" in path "%s" in "%s"' % (idx, path, str(d))) 490 return d 491 492 def assert_qmp_absent(self, d, path): 493 try: 494 result = self.dictpath(d, path) 495 except AssertionError: 496 return 497 self.fail('path "%s" has value "%s"' % (path, str(result))) 498 499 def assert_qmp(self, d, path, value): 500 '''Assert that the value for a specific path in a QMP dict matches''' 501 result = self.dictpath(d, path) 502 self.assertEqual(result, value, 'values not equal "%s" and "%s"' % (str(result), str(value))) 503 504 def assert_no_active_block_jobs(self): 505 result = self.vm.qmp('query-block-jobs') 506 self.assert_qmp(result, 'return', []) 507 508 def assert_has_block_node(self, node_name=None, file_name=None): 509 """Issue a query-named-block-nodes and assert node_name and/or 510 file_name is present in the result""" 511 def check_equal_or_none(a, b): 512 return a == None or b == None or a == b 513 assert node_name or file_name 514 result = self.vm.qmp('query-named-block-nodes') 515 for x in result["return"]: 516 if check_equal_or_none(x.get("node-name"), node_name) and \ 517 check_equal_or_none(x.get("file"), file_name): 518 return 519 self.assertTrue(False, "Cannot find %s %s in result:\n%s" % \ 520 (node_name, file_name, result)) 521 522 def assert_json_filename_equal(self, json_filename, reference): 523 '''Asserts that the given filename is a json: filename and that its 524 content is equal to the given reference object''' 525 self.assertEqual(json_filename[:5], 'json:') 526 self.assertEqual(self.vm.flatten_qmp_object(json.loads(json_filename[5:])), 527 self.vm.flatten_qmp_object(reference)) 528 529 def cancel_and_wait(self, drive='drive0', force=False, resume=False): 530 '''Cancel a block job and wait for it to finish, returning the event''' 531 result = self.vm.qmp('block-job-cancel', device=drive, force=force) 532 self.assert_qmp(result, 'return', {}) 533 534 if resume: 535 self.vm.resume_drive(drive) 536 537 cancelled = False 538 result = None 539 while not cancelled: 540 for event in self.vm.get_qmp_events(wait=True): 541 if event['event'] == 'BLOCK_JOB_COMPLETED' or \ 542 event['event'] == 'BLOCK_JOB_CANCELLED': 543 self.assert_qmp(event, 'data/device', drive) 544 result = event 545 cancelled = True 546 elif event['event'] == 'JOB_STATUS_CHANGE': 547 self.assert_qmp(event, 'data/id', drive) 548 549 550 self.assert_no_active_block_jobs() 551 return result 552 553 def wait_until_completed(self, drive='drive0', check_offset=True): 554 '''Wait for a block job to finish, returning the event''' 555 while True: 556 for event in self.vm.get_qmp_events(wait=True): 557 if event['event'] == 'BLOCK_JOB_COMPLETED': 558 self.assert_qmp(event, 'data/device', drive) 559 self.assert_qmp_absent(event, 'data/error') 560 if check_offset: 561 self.assert_qmp(event, 'data/offset', event['data']['len']) 562 self.assert_no_active_block_jobs() 563 return event 564 elif event['event'] == 'JOB_STATUS_CHANGE': 565 self.assert_qmp(event, 'data/id', drive) 566 567 def wait_ready(self, drive='drive0'): 568 '''Wait until a block job BLOCK_JOB_READY event''' 569 f = {'data': {'type': 'mirror', 'device': drive } } 570 event = self.vm.event_wait(name='BLOCK_JOB_READY', match=f) 571 572 def wait_ready_and_cancel(self, drive='drive0'): 573 self.wait_ready(drive=drive) 574 event = self.cancel_and_wait(drive=drive) 575 self.assertEquals(event['event'], 'BLOCK_JOB_COMPLETED') 576 self.assert_qmp(event, 'data/type', 'mirror') 577 self.assert_qmp(event, 'data/offset', event['data']['len']) 578 579 def complete_and_wait(self, drive='drive0', wait_ready=True): 580 '''Complete a block job and wait for it to finish''' 581 if wait_ready: 582 self.wait_ready(drive=drive) 583 584 result = self.vm.qmp('block-job-complete', device=drive) 585 self.assert_qmp(result, 'return', {}) 586 587 event = self.wait_until_completed(drive=drive) 588 self.assert_qmp(event, 'data/type', 'mirror') 589 590 def pause_wait(self, job_id='job0'): 591 with Timeout(1, "Timeout waiting for job to pause"): 592 while True: 593 result = self.vm.qmp('query-block-jobs') 594 found = False 595 for job in result['return']: 596 if job['device'] == job_id: 597 found = True 598 if job['paused'] == True and job['busy'] == False: 599 return job 600 break 601 assert found 602 603 def pause_job(self, job_id='job0', wait=True): 604 result = self.vm.qmp('block-job-pause', device=job_id) 605 self.assert_qmp(result, 'return', {}) 606 if wait: 607 return self.pause_wait(job_id) 608 return result 609 610 611def notrun(reason): 612 '''Skip this test suite''' 613 # Each test in qemu-iotests has a number ("seq") 614 seq = os.path.basename(sys.argv[0]) 615 616 open('%s/%s.notrun' % (output_dir, seq), 'wb').write(reason + '\n') 617 print('%s not run: %s' % (seq, reason)) 618 sys.exit(0) 619 620def verify_image_format(supported_fmts=[], unsupported_fmts=[]): 621 assert not (supported_fmts and unsupported_fmts) 622 623 if 'generic' in supported_fmts and \ 624 os.environ.get('IMGFMT_GENERIC', 'true') == 'true': 625 # similar to 626 # _supported_fmt generic 627 # for bash tests 628 return 629 630 not_sup = supported_fmts and (imgfmt not in supported_fmts) 631 if not_sup or (imgfmt in unsupported_fmts): 632 notrun('not suitable for this image format: %s' % imgfmt) 633 634def verify_protocol(supported=[], unsupported=[]): 635 assert not (supported and unsupported) 636 637 if 'generic' in supported: 638 return 639 640 not_sup = supported and (imgproto not in supported) 641 if not_sup or (imgproto in unsupported): 642 notrun('not suitable for this protocol: %s' % imgproto) 643 644def verify_platform(supported_oses=['linux']): 645 if True not in [sys.platform.startswith(x) for x in supported_oses]: 646 notrun('not suitable for this OS: %s' % sys.platform) 647 648def verify_cache_mode(supported_cache_modes=[]): 649 if supported_cache_modes and (cachemode not in supported_cache_modes): 650 notrun('not suitable for this cache mode: %s' % cachemode) 651 652def supports_quorum(): 653 return 'quorum' in qemu_img_pipe('--help') 654 655def verify_quorum(): 656 '''Skip test suite if quorum support is not available''' 657 if not supports_quorum(): 658 notrun('quorum support missing') 659 660def main(supported_fmts=[], supported_oses=['linux'], supported_cache_modes=[], 661 unsupported_fmts=[]): 662 '''Run tests''' 663 664 global debug 665 666 # We are using TEST_DIR and QEMU_DEFAULT_MACHINE as proxies to 667 # indicate that we're not being run via "check". There may be 668 # other things set up by "check" that individual test cases rely 669 # on. 670 if test_dir is None or qemu_default_machine is None: 671 sys.stderr.write('Please run this test via the "check" script\n') 672 sys.exit(os.EX_USAGE) 673 674 debug = '-d' in sys.argv 675 verbosity = 1 676 verify_image_format(supported_fmts, unsupported_fmts) 677 verify_platform(supported_oses) 678 verify_cache_mode(supported_cache_modes) 679 680 # We need to filter out the time taken from the output so that qemu-iotest 681 # can reliably diff the results against master output. 682 import StringIO 683 if debug: 684 output = sys.stdout 685 verbosity = 2 686 sys.argv.remove('-d') 687 else: 688 output = StringIO.StringIO() 689 690 logging.basicConfig(level=(logging.DEBUG if debug else logging.WARN)) 691 692 class MyTestRunner(unittest.TextTestRunner): 693 def __init__(self, stream=output, descriptions=True, verbosity=verbosity): 694 unittest.TextTestRunner.__init__(self, stream, descriptions, verbosity) 695 696 # unittest.main() will use sys.exit() so expect a SystemExit exception 697 try: 698 unittest.main(testRunner=MyTestRunner) 699 finally: 700 if not debug: 701 sys.stderr.write(re.sub(r'Ran (\d+) tests? in [\d.]+s', r'Ran \1 tests', output.getvalue())) 702