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# Copyright (c) 2017 Mark D. Hill and David A. Wood
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met: redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer;
# redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution;
# neither the name of the copyright holders nor the names of its
# contributors may be used to endorse or promote products derived from
# this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
# Authors: Sean Wilson
import multiprocessing.dummy
import threading
import traceback
import helper
import state
import log
import sandbox
from state import Status, Result
from fixture import SkipException
def compute_aggregate_result(iterable):
'''
Status of the test suite by default is:
* Passed if all contained tests passed
* Errored if any contained tests errored
* Failed if no tests errored, but one or more failed.
* Skipped if all contained tests were skipped
'''
failed = []
skipped = []
for testitem in iterable:
result = testitem.result
if result.value == Result.Errored:
return Result(result.value, result.reason)
elif result.value == Result.Failed:
failed.append(result.reason)
elif result.value == result.Skipped:
skipped.append(result.reason)
if failed:
return Result(Result.Failed, failed)
elif skipped:
return Result(Result.Skipped, skipped)
else:
return Result(Result.Passed)
class TestParameters(object):
def __init__(self, test, suite):
self.test = test
self.suite = suite
self.log = log.TestLogWrapper(log.test_log, test, suite)
@helper.cacheresult
def _fixtures(self):
fixtures = {fixture.name:fixture for fixture in self.suite.fixtures}
for fixture in self.test.fixtures:
fixtures[fixture.name] = fixture
return fixtures
@property
def fixtures(self):
return self._fixtures()
class RunnerPattern:
def __init__(self, loaded_testable):
self.testable = loaded_testable
self.builder = FixtureBuilder(self.testable.fixtures)
def handle_error(self, trace):
self.testable.result = Result(Result.Errored, trace)
self.avoid_children(trace)
def handle_skip(self, trace):
self.testable.result = Result(Result.Skipped, trace)
self.avoid_children(trace)
def avoid_children(self, reason):
for testable in self.testable:
testable.result = Result(self.testable.result.value, reason)
testable.status = Status.Avoided
def test(self):
pass
def run(self):
avoided = False
try:
self.testable.status = Status.Building
self.builder.setup(self.testable)
except SkipException:
self.handle_skip(traceback.format_exc())
avoided = True
except BrokenFixtureException:
self.handle_error(traceback.format_exc())
avoided = True
else:
self.testable.status = Status.Running
self.test()
finally:
self.testable.status = Status.TearingDown
self.builder.teardown(self.testable)
if avoided:
self.testable.status = Status.Avoided
else:
self.testable.status = Status.Complete
class TestRunner(RunnerPattern):
def test(self):
self.sandbox_test()
def sandbox_test(self):
try:
sandbox.Sandbox(TestParameters(
self.testable,
self.testable.parent_suite))
except sandbox.SubprocessException:
self.testable.result = Result(Result.Failed,
traceback.format_exc())
else:
self.testable.result = Result(Result.Passed)
class SuiteRunner(RunnerPattern):
def test(self):
for test in self.testable:
test.runner(test).run()
self.testable.result = compute_aggregate_result(
iter(self.testable))
class LibraryRunner(SuiteRunner):
pass
class LibraryParallelRunner(RunnerPattern):
def set_threads(self, threads):
self.threads = threads
def _entrypoint(self, suite):
suite.runner(suite).run()
def test(self):
pool = multiprocessing.dummy.Pool(self.threads)
pool.map(lambda suite : suite.runner(suite).run(), self.testable)
self.testable.result = compute_aggregate_result(
iter(self.testable))
class BrokenFixtureException(Exception):
def __init__(self, fixture, testitem, trace):
self.fixture = fixture
self.testitem = testitem
self.trace = trace
self.msg = ('%s\n'
'Exception raised building "%s" raised SkipException'
' for "%s".' %
(trace, fixture.name, testitem.name)
)
super(BrokenFixtureException, self).__init__(self.msg)
class FixtureBuilder(object):
def __init__(self, fixtures):
self.fixtures = fixtures
self.built_fixtures = []
def setup(self, testitem):
for fixture in self.fixtures:
# Mark as built before, so if the build fails
# we still try to tear it down.
self.built_fixtures.append(fixture)
try:
fixture.setup(testitem)
except SkipException:
raise
except Exception as e:
exc = traceback.format_exc()
msg = 'Exception raised while setting up fixture for %s' %\
testitem.uid
log.test_log.warn('%s\n%s' % (exc, msg))
raise BrokenFixtureException(fixture, testitem,
traceback.format_exc())
def teardown(self, testitem):
for fixture in self.built_fixtures:
try:
fixture.teardown(testitem)
except Exception:
# Log exception but keep cleaning up.
exc = traceback.format_exc()
msg = 'Exception raised while tearing down fixture for %s' %\
testitem.uid
log.test_log.warn('%s\n%s' % (exc, msg))
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