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u-boot/test/py/conftest.py
Simon Glass 1f0fe88db1 test/py: Allow any unit test suite to be found 
The u-boot.sym file is scanned to find unit test suites for execution. At
present it only finds those whose names start with 'dm' or 'env'. This
code is buried in the bowels of the test code so when adding a new suite
it is not easy to discover why it is ignored by the test framework.

There seems to be no need to make this restriction. Drop it.

Signed-off-by: Simon Glass <sjg@chromium.org>
Acked-by: Stephen Warren <swarren@nvidia.com>
2017-12-02 18:32:58 -05:00

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# Copyright (c) 2015 Stephen Warren
# Copyright (c) 2015-2016, NVIDIA CORPORATION. All rights reserved.
#
# SPDX-License-Identifier: GPL-2.0
# Implementation of pytest run-time hook functions. These are invoked by
# pytest at certain points during operation, e.g. startup, for each executed
# test, at shutdown etc. These hooks perform functions such as:
# - Parsing custom command-line options.
# - Pullilng in user-specified board configuration.
# - Creating the U-Boot console test fixture.
# - Creating the HTML log file.
# - Monitoring each test's results.
# - Implementing custom pytest markers.
import atexit
import errno
import os
import os.path
import pytest
from _pytest.runner import runtestprotocol
import ConfigParser
import re
import StringIO
import sys
# Globals: The HTML log file, and the connection to the U-Boot console.
log = None
console = None
def mkdir_p(path):
"""Create a directory path.
This includes creating any intermediate/parent directories. Any errors
caused due to already extant directories are ignored.
Args:
path: The directory path to create.
Returns:
Nothing.
"""
try:
os.makedirs(path)
except OSError as exc:
if exc.errno == errno.EEXIST and os.path.isdir(path):
pass
else:
raise
def pytest_addoption(parser):
"""pytest hook: Add custom command-line options to the cmdline parser.
Args:
parser: The pytest command-line parser.
Returns:
Nothing.
"""
parser.addoption('--build-dir', default=None,
help='U-Boot build directory (O=)')
parser.addoption('--result-dir', default=None,
help='U-Boot test result/tmp directory')
parser.addoption('--persistent-data-dir', default=None,
help='U-Boot test persistent generated data directory')
parser.addoption('--board-type', '--bd', '-B', default='sandbox',
help='U-Boot board type')
parser.addoption('--board-identity', '--id', default='na',
help='U-Boot board identity/instance')
parser.addoption('--build', default=False, action='store_true',
help='Compile U-Boot before running tests')
parser.addoption('--gdbserver', default=None,
help='Run sandbox under gdbserver. The argument is the channel '+
'over which gdbserver should communicate, e.g. localhost:1234')
def pytest_configure(config):
"""pytest hook: Perform custom initialization at startup time.
Args:
config: The pytest configuration.
Returns:
Nothing.
"""
global log
global console
global ubconfig
test_py_dir = os.path.dirname(os.path.abspath(__file__))
source_dir = os.path.dirname(os.path.dirname(test_py_dir))
board_type = config.getoption('board_type')
board_type_filename = board_type.replace('-', '_')
board_identity = config.getoption('board_identity')
board_identity_filename = board_identity.replace('-', '_')
build_dir = config.getoption('build_dir')
if not build_dir:
build_dir = source_dir + '/build-' + board_type
mkdir_p(build_dir)
result_dir = config.getoption('result_dir')
if not result_dir:
result_dir = build_dir
mkdir_p(result_dir)
persistent_data_dir = config.getoption('persistent_data_dir')
if not persistent_data_dir:
persistent_data_dir = build_dir + '/persistent-data'
mkdir_p(persistent_data_dir)
gdbserver = config.getoption('gdbserver')
if gdbserver and board_type != 'sandbox':
raise Exception('--gdbserver only supported with sandbox')
import multiplexed_log
log = multiplexed_log.Logfile(result_dir + '/test-log.html')
if config.getoption('build'):
if build_dir != source_dir:
o_opt = 'O=%s' % build_dir
else:
o_opt = ''
cmds = (
['make', o_opt, '-s', board_type + '_defconfig'],
['make', o_opt, '-s', '-j8'],
)
with log.section('make'):
runner = log.get_runner('make', sys.stdout)
for cmd in cmds:
runner.run(cmd, cwd=source_dir)
runner.close()
log.status_pass('OK')
class ArbitraryAttributeContainer(object):
pass
ubconfig = ArbitraryAttributeContainer()
ubconfig.brd = dict()
ubconfig.env = dict()
modules = [
(ubconfig.brd, 'u_boot_board_' + board_type_filename),
(ubconfig.env, 'u_boot_boardenv_' + board_type_filename),
(ubconfig.env, 'u_boot_boardenv_' + board_type_filename + '_' +
board_identity_filename),
]
for (dict_to_fill, module_name) in modules:
try:
module = __import__(module_name)
except ImportError:
continue
dict_to_fill.update(module.__dict__)
ubconfig.buildconfig = dict()
for conf_file in ('.config', 'include/autoconf.mk'):
dot_config = build_dir + '/' + conf_file
if not os.path.exists(dot_config):
raise Exception(conf_file + ' does not exist; ' +
'try passing --build option?')
with open(dot_config, 'rt') as f:
ini_str = '[root]\n' + f.read()
ini_sio = StringIO.StringIO(ini_str)
parser = ConfigParser.RawConfigParser()
parser.readfp(ini_sio)
ubconfig.buildconfig.update(parser.items('root'))
ubconfig.test_py_dir = test_py_dir
ubconfig.source_dir = source_dir
ubconfig.build_dir = build_dir
ubconfig.result_dir = result_dir
ubconfig.persistent_data_dir = persistent_data_dir
ubconfig.board_type = board_type
ubconfig.board_identity = board_identity
ubconfig.gdbserver = gdbserver
ubconfig.dtb = build_dir + '/arch/sandbox/dts/test.dtb'
env_vars = (
'board_type',
'board_identity',
'source_dir',
'test_py_dir',
'build_dir',
'result_dir',
'persistent_data_dir',
)
for v in env_vars:
os.environ['U_BOOT_' + v.upper()] = getattr(ubconfig, v)
if board_type.startswith('sandbox'):
import u_boot_console_sandbox
console = u_boot_console_sandbox.ConsoleSandbox(log, ubconfig)
else:
import u_boot_console_exec_attach
console = u_boot_console_exec_attach.ConsoleExecAttach(log, ubconfig)
re_ut_test_list = re.compile(r'_u_boot_list_2_(.*)_test_2_\1_test_(.*)\s*$')
def generate_ut_subtest(metafunc, fixture_name):
"""Provide parametrization for a ut_subtest fixture.
Determines the set of unit tests built into a U-Boot binary by parsing the
list of symbols generated by the build process. Provides this information
to test functions by parameterizing their ut_subtest fixture parameter.
Args:
metafunc: The pytest test function.
fixture_name: The fixture name to test.
Returns:
Nothing.
"""
fn = console.config.build_dir + '/u-boot.sym'
try:
with open(fn, 'rt') as f:
lines = f.readlines()
except:
lines = []
lines.sort()
vals = []
for l in lines:
m = re_ut_test_list.search(l)
if not m:
continue
vals.append(m.group(1) + ' ' + m.group(2))
ids = ['ut_' + s.replace(' ', '_') for s in vals]
metafunc.parametrize(fixture_name, vals, ids=ids)
def generate_config(metafunc, fixture_name):
"""Provide parametrization for {env,brd}__ fixtures.
If a test function takes parameter(s) (fixture names) of the form brd__xxx
or env__xxx, the brd and env configuration dictionaries are consulted to
find the list of values to use for those parameters, and the test is
parametrized so that it runs once for each combination of values.
Args:
metafunc: The pytest test function.
fixture_name: The fixture name to test.
Returns:
Nothing.
"""
subconfigs = {
'brd': console.config.brd,
'env': console.config.env,
}
parts = fixture_name.split('__')
if len(parts) < 2:
return
if parts[0] not in subconfigs:
return
subconfig = subconfigs[parts[0]]
vals = []
val = subconfig.get(fixture_name, [])
# If that exact name is a key in the data source:
if val:
# ... use the dict value as a single parameter value.
vals = (val, )
else:
# ... otherwise, see if there's a key that contains a list of
# values to use instead.
vals = subconfig.get(fixture_name+ 's', [])
def fixture_id(index, val):
try:
return val['fixture_id']
except:
return fixture_name + str(index)
ids = [fixture_id(index, val) for (index, val) in enumerate(vals)]
metafunc.parametrize(fixture_name, vals, ids=ids)
def pytest_generate_tests(metafunc):
"""pytest hook: parameterize test functions based on custom rules.
Check each test function parameter (fixture name) to see if it is one of
our custom names, and if so, provide the correct parametrization for that
parameter.
Args:
metafunc: The pytest test function.
Returns:
Nothing.
"""
for fn in metafunc.fixturenames:
if fn == 'ut_subtest':
generate_ut_subtest(metafunc, fn)
continue
generate_config(metafunc, fn)
@pytest.fixture(scope='session')
def u_boot_log(request):
"""Generate the value of a test's log fixture.
Args:
request: The pytest request.
Returns:
The fixture value.
"""
return console.log
@pytest.fixture(scope='session')
def u_boot_config(request):
"""Generate the value of a test's u_boot_config fixture.
Args:
request: The pytest request.
Returns:
The fixture value.
"""
return console.config
@pytest.fixture(scope='function')
def u_boot_console(request):
"""Generate the value of a test's u_boot_console fixture.
Args:
request: The pytest request.
Returns:
The fixture value.
"""
console.ensure_spawned()
return console
anchors = {}
tests_not_run = []
tests_failed = []
tests_xpassed = []
tests_xfailed = []
tests_skipped = []
tests_passed = []
def pytest_itemcollected(item):
"""pytest hook: Called once for each test found during collection.
This enables our custom result analysis code to see the list of all tests
that should eventually be run.
Args:
item: The item that was collected.
Returns:
Nothing.
"""
tests_not_run.append(item.name)
def cleanup():
"""Clean up all global state.
Executed (via atexit) once the entire test process is complete. This
includes logging the status of all tests, and the identity of any failed
or skipped tests.
Args:
None.
Returns:
Nothing.
"""
if console:
console.close()
if log:
with log.section('Status Report', 'status_report'):
log.status_pass('%d passed' % len(tests_passed))
if tests_skipped:
log.status_skipped('%d skipped' % len(tests_skipped))
for test in tests_skipped:
anchor = anchors.get(test, None)
log.status_skipped('... ' + test, anchor)
if tests_xpassed:
log.status_xpass('%d xpass' % len(tests_xpassed))
for test in tests_xpassed:
anchor = anchors.get(test, None)
log.status_xpass('... ' + test, anchor)
if tests_xfailed:
log.status_xfail('%d xfail' % len(tests_xfailed))
for test in tests_xfailed:
anchor = anchors.get(test, None)
log.status_xfail('... ' + test, anchor)
if tests_failed:
log.status_fail('%d failed' % len(tests_failed))
for test in tests_failed:
anchor = anchors.get(test, None)
log.status_fail('... ' + test, anchor)
if tests_not_run:
log.status_fail('%d not run' % len(tests_not_run))
for test in tests_not_run:
anchor = anchors.get(test, None)
log.status_fail('... ' + test, anchor)
log.close()
atexit.register(cleanup)
def setup_boardspec(item):
"""Process any 'boardspec' marker for a test.
Such a marker lists the set of board types that a test does/doesn't
support. If tests are being executed on an unsupported board, the test is
marked to be skipped.
Args:
item: The pytest test item.
Returns:
Nothing.
"""
mark = item.get_marker('boardspec')
if not mark:
return
required_boards = []
for board in mark.args:
if board.startswith('!'):
if ubconfig.board_type == board[1:]:
pytest.skip('board "%s" not supported' % ubconfig.board_type)
return
else:
required_boards.append(board)
if required_boards and ubconfig.board_type not in required_boards:
pytest.skip('board "%s" not supported' % ubconfig.board_type)
def setup_buildconfigspec(item):
"""Process any 'buildconfigspec' marker for a test.
Such a marker lists some U-Boot configuration feature that the test
requires. If tests are being executed on an U-Boot build that doesn't
have the required feature, the test is marked to be skipped.
Args:
item: The pytest test item.
Returns:
Nothing.
"""
mark = item.get_marker('buildconfigspec')
if not mark:
return
for option in mark.args:
if not ubconfig.buildconfig.get('config_' + option.lower(), None):
pytest.skip('.config feature "%s" not enabled' % option.lower())
def tool_is_in_path(tool):
for path in os.environ["PATH"].split(os.pathsep):
fn = os.path.join(path, tool)
if os.path.isfile(fn) and os.access(fn, os.X_OK):
return True
return False
def setup_requiredtool(item):
"""Process any 'requiredtool' marker for a test.
Such a marker lists some external tool (binary, executable, application)
that the test requires. If tests are being executed on a system that
doesn't have the required tool, the test is marked to be skipped.
Args:
item: The pytest test item.
Returns:
Nothing.
"""
mark = item.get_marker('requiredtool')
if not mark:
return
for tool in mark.args:
if not tool_is_in_path(tool):
pytest.skip('tool "%s" not in $PATH' % tool)
def start_test_section(item):
anchors[item.name] = log.start_section(item.name)
def pytest_runtest_setup(item):
"""pytest hook: Configure (set up) a test item.
Called once for each test to perform any custom configuration. This hook
is used to skip the test if certain conditions apply.
Args:
item: The pytest test item.
Returns:
Nothing.
"""
start_test_section(item)
setup_boardspec(item)
setup_buildconfigspec(item)
setup_requiredtool(item)
def pytest_runtest_protocol(item, nextitem):
"""pytest hook: Called to execute a test.
This hook wraps the standard pytest runtestprotocol() function in order
to acquire visibility into, and record, each test function's result.
Args:
item: The pytest test item to execute.
nextitem: The pytest test item that will be executed after this one.
Returns:
A list of pytest reports (test result data).
"""
reports = runtestprotocol(item, nextitem=nextitem)
# In pytest 3, runtestprotocol() may not call pytest_runtest_setup() if
# the test is skipped. That call is required to create the test's section
# in the log file. The call to log.end_section() requires that the log
# contain a section for this test. Create a section for the test if it
# doesn't already exist.
if not item.name in anchors:
start_test_section(item)
failure_cleanup = False
test_list = tests_passed
msg = 'OK'
msg_log = log.status_pass
for report in reports:
if report.outcome == 'failed':
if hasattr(report, 'wasxfail'):
test_list = tests_xpassed
msg = 'XPASSED'
msg_log = log.status_xpass
else:
failure_cleanup = True
test_list = tests_failed
msg = 'FAILED:\n' + str(report.longrepr)
msg_log = log.status_fail
break
if report.outcome == 'skipped':
if hasattr(report, 'wasxfail'):
failure_cleanup = True
test_list = tests_xfailed
msg = 'XFAILED:\n' + str(report.longrepr)
msg_log = log.status_xfail
break
test_list = tests_skipped
msg = 'SKIPPED:\n' + str(report.longrepr)
msg_log = log.status_skipped
if failure_cleanup:
console.drain_console()
test_list.append(item.name)
tests_not_run.remove(item.name)
try:
msg_log(msg)
except:
# If something went wrong with logging, it's better to let the test
# process continue, which may report other exceptions that triggered
# the logging issue (e.g. console.log wasn't created). Hence, just
# squash the exception. If the test setup failed due to e.g. syntax
# error somewhere else, this won't be seen. However, once that issue
# is fixed, if this exception still exists, it will then be logged as
# part of the test's stdout.
import traceback
print 'Exception occurred while logging runtest status:'
traceback.print_exc()
# FIXME: Can we force a test failure here?
log.end_section(item.name)
if failure_cleanup:
console.cleanup_spawn()
return reports
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