test/py/conftest.py

   1 # Copyright (c) 2015 Stephen Warren
   2 # Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved.
   3 #
   4 # SPDX-License-Identifier: GPL-2.0
   5
   6 # Implementation of pytest run-time hook functions. These are invoked by
   7 # pytest at certain points during operation, e.g. startup, for each executed
   8 # test, at shutdown etc. These hooks perform functions such as:
   9 # - Parsing custom command-line options.
  10 # - Pullilng in user-specified board configuration.
  11 # - Creating the U-Boot console test fixture.
  12 # - Creating the HTML log file.
  13 # - Monitoring each test's results.
  14 # - Implementing custom pytest markers.
  15
  16 import atexit
  17 import errno
  18 import os
  19 import os.path
  20 import pytest
  21 from _pytest.runner import runtestprotocol
  22 import ConfigParser
  23 import re
  24 import StringIO
  25 import sys
  26
  27 # Globals: The HTML log file, and the connection to the U-Boot console.
  28 log = None
  29 console = None
  30
  31 def mkdir_p(path):
  32     """Create a directory path.
  33
  34     This includes creating any intermediate/parent directories. Any errors
  35     caused due to already extant directories are ignored.
  36
  37     Args:
  38         path: The directory path to create.
  39
  40     Returns:
  41         Nothing.
  42     """
  43
  44     try:
  45         os.makedirs(path)
  46     except OSError as exc:
  47         if exc.errno == errno.EEXIST and os.path.isdir(path):
  48             pass
  49         else:
  50             raise
  51
  52 def pytest_addoption(parser):
  53     """pytest hook: Add custom command-line options to the cmdline parser.
  54
  55     Args:
  56         parser: The pytest command-line parser.
  57
  58     Returns:
  59         Nothing.
  60     """
  61
  62     parser.addoption('--build-dir', default=None,
  63         help='U-Boot build directory (O=)')
  64     parser.addoption('--result-dir', default=None,
  65         help='U-Boot test result/tmp directory')
  66     parser.addoption('--persistent-data-dir', default=None,
  67         help='U-Boot test persistent generated data directory')
  68     parser.addoption('--board-type', '--bd', '-B', default='sandbox',
  69         help='U-Boot board type')
  70     parser.addoption('--board-identity', '--id', default='na',
  71         help='U-Boot board identity/instance')
  72     parser.addoption('--build', default=False, action='store_true',
  73         help='Compile U-Boot before running tests')
  74     parser.addoption('--gdbserver', default=None,
  75         help='Run sandbox under gdbserver. The argument is the channel '+
  76         'over which gdbserver should communicate, e.g. localhost:1234')
  77
  78 def pytest_configure(config):
  79     """pytest hook: Perform custom initialization at startup time.
  80
  81     Args:
  82         config: The pytest configuration.
  83
  84     Returns:
  85         Nothing.
  86     """
  87
  88     global log
  89     global console
  90     global ubconfig
  91
  92     test_py_dir = os.path.dirname(os.path.abspath(__file__))
  93     source_dir = os.path.dirname(os.path.dirname(test_py_dir))
  94
  95     board_type = config.getoption('board_type')
  96     board_type_filename = board_type.replace('-', '_')
  97
  98     board_identity = config.getoption('board_identity')
  99     board_identity_filename = board_identity.replace('-', '_')
 100
 101     build_dir = config.getoption('build_dir')
 102     if not build_dir:
 103         build_dir = source_dir + '/build-' + board_type
 104     mkdir_p(build_dir)
 105
 106     result_dir = config.getoption('result_dir')
 107     if not result_dir:
 108         result_dir = build_dir
 109     mkdir_p(result_dir)
 110
 111     persistent_data_dir = config.getoption('persistent_data_dir')
 112     if not persistent_data_dir:
 113         persistent_data_dir = build_dir + '/persistent-data'
 114     mkdir_p(persistent_data_dir)
 115
 116     gdbserver = config.getoption('gdbserver')
 117     if gdbserver and board_type != 'sandbox':
 118         raise Exception('--gdbserver only supported with sandbox')
 119
 120     import multiplexed_log
 121     log = multiplexed_log.Logfile(result_dir + '/test-log.html')
 122
 123     if config.getoption('build'):
 124         if build_dir != source_dir:
 125             o_opt = 'O=%s' % build_dir
 126         else:
 127             o_opt = ''
 128         cmds = (
 129             ['make', o_opt, '-s', board_type + '_defconfig'],
 130             ['make', o_opt, '-s', '-j8'],
 131         )
 132         with log.section('make'):
 133             runner = log.get_runner('make', sys.stdout)
 134             for cmd in cmds:
 135                 runner.run(cmd, cwd=source_dir)
 136             runner.close()
 137             log.status_pass('OK')
 138
 139     class ArbitraryAttributeContainer(object):
 140         pass
 141
 142     ubconfig = ArbitraryAttributeContainer()
 143     ubconfig.brd = dict()
 144     ubconfig.env = dict()
 145
 146     modules = [
 147         (ubconfig.brd, 'u_boot_board_' + board_type_filename),
 148         (ubconfig.env, 'u_boot_boardenv_' + board_type_filename),
 149         (ubconfig.env, 'u_boot_boardenv_' + board_type_filename + '_' +
 150             board_identity_filename),
 151     ]
 152     for (dict_to_fill, module_name) in modules:
 153         try:
 154             module = __import__(module_name)
 155         except ImportError:
 156             continue
 157         dict_to_fill.update(module.__dict__)
 158
 159     ubconfig.buildconfig = dict()
 160
 161     for conf_file in ('.config', 'include/autoconf.mk'):
 162         dot_config = build_dir + '/' + conf_file
 163         if not os.path.exists(dot_config):
 164             raise Exception(conf_file + ' does not exist; ' +
 165                 'try passing --build option?')
 166
 167         with open(dot_config, 'rt') as f:
 168             ini_str = '[root]\n' + f.read()
 169             ini_sio = StringIO.StringIO(ini_str)
 170             parser = ConfigParser.RawConfigParser()
 171             parser.readfp(ini_sio)
 172             ubconfig.buildconfig.update(parser.items('root'))
 173
 174     ubconfig.test_py_dir = test_py_dir
 175     ubconfig.source_dir = source_dir
 176     ubconfig.build_dir = build_dir
 177     ubconfig.result_dir = result_dir
 178     ubconfig.persistent_data_dir = persistent_data_dir
 179     ubconfig.board_type = board_type
 180     ubconfig.board_identity = board_identity
 181     ubconfig.gdbserver = gdbserver
 182     ubconfig.dtb = build_dir + '/arch/sandbox/dts/test.dtb'
 183
 184     env_vars = (
 185         'board_type',
 186         'board_identity',
 187         'source_dir',
 188         'test_py_dir',
 189         'build_dir',
 190         'result_dir',
 191         'persistent_data_dir',
 192     )
 193     for v in env_vars:
 194         os.environ['U_BOOT_' + v.upper()] = getattr(ubconfig, v)
 195
 196     if board_type.startswith('sandbox'):
 197         import u_boot_console_sandbox
 198         console = u_boot_console_sandbox.ConsoleSandbox(log, ubconfig)
 199     else:
 200         import u_boot_console_exec_attach
 201         console = u_boot_console_exec_attach.ConsoleExecAttach(log, ubconfig)
 202
 203 re_ut_test_list = re.compile(r'_u_boot_list_2_(dm|env)_test_2_\1_test_(.*)\s*$')
 204 def generate_ut_subtest(metafunc, fixture_name):
 205     """Provide parametrization for a ut_subtest fixture.
 206
 207     Determines the set of unit tests built into a U-Boot binary by parsing the
 208     list of symbols generated by the build process. Provides this information
 209     to test functions by parameterizing their ut_subtest fixture parameter.
 210
 211     Args:
 212         metafunc: The pytest test function.
 213         fixture_name: The fixture name to test.
 214
 215     Returns:
 216         Nothing.
 217     """
 218
 219     fn = console.config.build_dir + '/u-boot.sym'
 220     try:
 221         with open(fn, 'rt') as f:
 222             lines = f.readlines()
 223     except:
 224         lines = []
 225     lines.sort()
 226
 227     vals = []
 228     for l in lines:
 229         m = re_ut_test_list.search(l)
 230         if not m:
 231             continue
 232         vals.append(m.group(1) + ' ' + m.group(2))
 233
 234     ids = ['ut_' + s.replace(' ', '_') for s in vals]
 235     metafunc.parametrize(fixture_name, vals, ids=ids)
 236
 237 def generate_config(metafunc, fixture_name):
 238     """Provide parametrization for {env,brd}__ fixtures.
 239
 240     If a test function takes parameter(s) (fixture names) of the form brd__xxx
 241     or env__xxx, the brd and env configuration dictionaries are consulted to
 242     find the list of values to use for those parameters, and the test is
 243     parametrized so that it runs once for each combination of values.
 244
 245     Args:
 246         metafunc: The pytest test function.
 247         fixture_name: The fixture name to test.
 248
 249     Returns:
 250         Nothing.
 251     """
 252
 253     subconfigs = {
 254         'brd': console.config.brd,
 255         'env': console.config.env,
 256     }
 257     parts = fixture_name.split('__')
 258     if len(parts) < 2:
 259         return
 260     if parts[0] not in subconfigs:
 261         return
 262     subconfig = subconfigs[parts[0]]
 263     vals = []
 264     val = subconfig.get(fixture_name, [])
 265     # If that exact name is a key in the data source:
 266     if val:
 267         # ... use the dict value as a single parameter value.
 268         vals = (val, )
 269     else:
 270         # ... otherwise, see if there's a key that contains a list of
 271         # values to use instead.
 272         vals = subconfig.get(fixture_name+ 's', [])
 273     def fixture_id(index, val):
 274         try:
 275             return val['fixture_id']
 276         except:
 277             return fixture_name + str(index)
 278     ids = [fixture_id(index, val) for (index, val) in enumerate(vals)]
 279     metafunc.parametrize(fixture_name, vals, ids=ids)
 280
 281 def pytest_generate_tests(metafunc):
 282     """pytest hook: parameterize test functions based on custom rules.
 283
 284     Check each test function parameter (fixture name) to see if it is one of
 285     our custom names, and if so, provide the correct parametrization for that
 286     parameter.
 287
 288     Args:
 289         metafunc: The pytest test function.
 290
 291     Returns:
 292         Nothing.
 293     """
 294
 295     for fn in metafunc.fixturenames:
 296         if fn == 'ut_subtest':
 297             generate_ut_subtest(metafunc, fn)
 298             continue
 299         generate_config(metafunc, fn)
 300
 301 @pytest.fixture(scope='function')
 302 def u_boot_console(request):
 303     """Generate the value of a test's u_boot_console fixture.
 304
 305     Args:
 306         request: The pytest request.
 307
 308     Returns:
 309         The fixture value.
 310     """
 311
 312     console.ensure_spawned()
 313     return console
 314
 315 anchors = {}
 316 tests_not_run = []
 317 tests_failed = []
 318 tests_xpassed = []
 319 tests_xfailed = []
 320 tests_skipped = []
 321 tests_passed = []
 322
 323 def pytest_itemcollected(item):
 324     """pytest hook: Called once for each test found during collection.
 325
 326     This enables our custom result analysis code to see the list of all tests
 327     that should eventually be run.
 328
 329     Args:
 330         item: The item that was collected.
 331
 332     Returns:
 333         Nothing.
 334     """
 335
 336     tests_not_run.append(item.name)
 337
 338 def cleanup():
 339     """Clean up all global state.
 340
 341     Executed (via atexit) once the entire test process is complete. This
 342     includes logging the status of all tests, and the identity of any failed
 343     or skipped tests.
 344
 345     Args:
 346         None.
 347
 348     Returns:
 349         Nothing.
 350     """
 351
 352     if console:
 353         console.close()
 354     if log:
 355         with log.section('Status Report', 'status_report'):
 356             log.status_pass('%d passed' % len(tests_passed))
 357             if tests_skipped:
 358                 log.status_skipped('%d skipped' % len(tests_skipped))
 359                 for test in tests_skipped:
 360                     anchor = anchors.get(test, None)
 361                     log.status_skipped('... ' + test, anchor)
 362             if tests_xpassed:
 363                 log.status_xpass('%d xpass' % len(tests_xpassed))
 364                 for test in tests_xpassed:
 365                     anchor = anchors.get(test, None)
 366                     log.status_xpass('... ' + test, anchor)
 367             if tests_xfailed:
 368                 log.status_xfail('%d xfail' % len(tests_xfailed))
 369                 for test in tests_xfailed:
 370                     anchor = anchors.get(test, None)
 371                     log.status_xfail('... ' + test, anchor)
 372             if tests_failed:
 373                 log.status_fail('%d failed' % len(tests_failed))
 374                 for test in tests_failed:
 375                     anchor = anchors.get(test, None)
 376                     log.status_fail('... ' + test, anchor)
 377             if tests_not_run:
 378                 log.status_fail('%d not run' % len(tests_not_run))
 379                 for test in tests_not_run:
 380                     anchor = anchors.get(test, None)
 381                     log.status_fail('... ' + test, anchor)
 382         log.close()
 383 atexit.register(cleanup)
 384
 385 def setup_boardspec(item):
 386     """Process any 'boardspec' marker for a test.
 387
 388     Such a marker lists the set of board types that a test does/doesn't
 389     support. If tests are being executed on an unsupported board, the test is
 390     marked to be skipped.
 391
 392     Args:
 393         item: The pytest test item.
 394
 395     Returns:
 396         Nothing.
 397     """
 398
 399     mark = item.get_marker('boardspec')
 400     if not mark:
 401         return
 402     required_boards = []
 403     for board in mark.args:
 404         if board.startswith('!'):
 405             if ubconfig.board_type == board[1:]:
 406                 pytest.skip('board not supported')
 407                 return
 408         else:
 409             required_boards.append(board)
 410     if required_boards and ubconfig.board_type not in required_boards:
 411         pytest.skip('board not supported')
 412
 413 def setup_buildconfigspec(item):
 414     """Process any 'buildconfigspec' marker for a test.
 415
 416     Such a marker lists some U-Boot configuration feature that the test
 417     requires. If tests are being executed on an U-Boot build that doesn't
 418     have the required feature, the test is marked to be skipped.
 419
 420     Args:
 421         item: The pytest test item.
 422
 423     Returns:
 424         Nothing.
 425     """
 426
 427     mark = item.get_marker('buildconfigspec')
 428     if not mark:
 429         return
 430     for option in mark.args:
 431         if not ubconfig.buildconfig.get('config_' + option.lower(), None):
 432             pytest.skip('.config feature not enabled')
 433
 434 def pytest_runtest_setup(item):
 435     """pytest hook: Configure (set up) a test item.
 436
 437     Called once for each test to perform any custom configuration. This hook
 438     is used to skip the test if certain conditions apply.
 439
 440     Args:
 441         item: The pytest test item.
 442
 443     Returns:
 444         Nothing.
 445     """
 446
 447     anchors[item.name] = log.start_section(item.name)
 448     setup_boardspec(item)
 449     setup_buildconfigspec(item)
 450
 451 def pytest_runtest_protocol(item, nextitem):
 452     """pytest hook: Called to execute a test.
 453
 454     This hook wraps the standard pytest runtestprotocol() function in order
 455     to acquire visibility into, and record, each test function's result.
 456
 457     Args:
 458         item: The pytest test item to execute.
 459         nextitem: The pytest test item that will be executed after this one.
 460
 461     Returns:
 462         A list of pytest reports (test result data).
 463     """
 464
 465     reports = runtestprotocol(item, nextitem=nextitem)
 466
 467     failure_cleanup = False
 468     test_list = tests_passed
 469     msg = 'OK'
 470     msg_log = log.status_pass
 471     for report in reports:
 472         if report.outcome == 'failed':
 473             if hasattr(report, 'wasxfail'):
 474                 test_list = tests_xpassed
 475                 msg = 'XPASSED'
 476                 msg_log = log.status_xpass
 477             else:
 478                 failure_cleanup = True
 479                 test_list = tests_failed
 480                 msg = 'FAILED:\n' + str(report.longrepr)
 481                 msg_log = log.status_fail
 482             break
 483         if report.outcome == 'skipped':
 484             if hasattr(report, 'wasxfail'):
 485                 failure_cleanup = True
 486                 test_list = tests_xfailed
 487                 msg = 'XFAILED:\n' + str(report.longrepr)
 488                 msg_log = log.status_xfail
 489                 break
 490             test_list = tests_skipped
 491             msg = 'SKIPPED:\n' + str(report.longrepr)
 492             msg_log = log.status_skipped
 493
 494     if failure_cleanup:
 495         console.drain_console()
 496
 497     test_list.append(item.name)
 498     tests_not_run.remove(item.name)
 499
 500     try:
 501         msg_log(msg)
 502     except:
 503         # If something went wrong with logging, it's better to let the test
 504         # process continue, which may report other exceptions that triggered
 505         # the logging issue (e.g. console.log wasn't created). Hence, just
 506         # squash the exception. If the test setup failed due to e.g. syntax
 507         # error somewhere else, this won't be seen. However, once that issue
 508         # is fixed, if this exception still exists, it will then be logged as
 509         # part of the test's stdout.
 510         import traceback
 511         print 'Exception occurred while logging runtest status:'
 512         traceback.print_exc()
 513         # FIXME: Can we force a test failure here?
 514
 515     log.end_section(item.name)
 516
 517     if failure_cleanup:
 518         console.cleanup_spawn()
 519
 520     return reports