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# Copyright 2012 the V8 project authors. 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 Google Inc. 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.
import fnmatch
import imp
import itertools
import os
from contextlib import contextmanager
from . import command
from . import statusfile
from . import utils
from ..objects.testcase import TestCase
from .variants import ALL_VARIANTS, ALL_VARIANT_FLAGS
STANDARD_VARIANT = set(["default"])
class VariantsGenerator(object):
def __init__(self, variants):
self._all_variants = [v for v in variants if v in ALL_VARIANTS]
self._standard_variant = [v for v in variants if v in STANDARD_VARIANT]
def gen(self, test):
"""Generator producing (variant, flags, procid suffix) tuples."""
flags_set = self._get_flags_set(test)
for n, variant in enumerate(self._get_variants(test)):
yield (variant, flags_set[variant][0], n)
def _get_flags_set(self, test):
return ALL_VARIANT_FLAGS
def _get_variants(self, test):
if test.only_standard_variant:
return self._standard_variant
return self._all_variants
class TestCombiner(object):
def get_group_key(self, test):
"""To indicate what tests can be combined with each other we define a group
key for each test. Tests with the same group key can be combined. Test
without a group key (None) is not combinable with any other test.
"""
raise NotImplementedError()
def combine(self, name, tests):
"""Returns test combined from `tests`. Since we identify tests by their
suite and name, `name` parameter should be unique within one suite.
"""
return self._combined_test_class()(name, tests)
def _combined_test_class(self):
raise NotImplementedError()
class TestLoader(object):
"""Base class for loading TestSuite tests after applying test suite
transformations."""
def __init__(self, suite, test_class, test_config, test_root):
self.suite = suite
self.test_class = test_class
self.test_config = test_config
self.test_root = test_root
self.test_count_estimation = len(list(self._list_test_filenames()))
def _list_test_filenames(self):
"""Implemented by the subclassed TestLoaders to list filenames.
Filenames are expected to be sorted and are deterministic."""
raise NotImplementedError
def _should_filter_by_name(self, name):
return False
def _should_filter_by_test(self, test):
return False
def _filename_to_testname(self, filename):
"""Hook for subclasses to write their own filename transformation
logic before the test creation."""
return filename
# TODO: not needed for every TestLoader, extract it into a subclass.
def _path_to_name(self, path):
if utils.IsWindows():
return path.replace(os.path.sep, "/")
return path
def _create_test(self, path, suite, **kwargs):
"""Converts paths into test objects using the given options"""
return self.test_class(
suite, path, self._path_to_name(path), self.test_config, **kwargs)
def list_tests(self):
"""Loads and returns the test objects for a TestSuite"""
# TODO: detect duplicate tests.
for filename in self._list_test_filenames():
if self._should_filter_by_name(filename):
continue
testname = self._filename_to_testname(filename)
case = self._create_test(testname, self.suite)
if self._should_filter_by_test(case):
continue
yield case
class GenericTestLoader(TestLoader):
"""Generic TestLoader implementing the logic for listing filenames"""
@property
def excluded_files(self):
return set()
@property
def excluded_dirs(self):
return set()
@property
def excluded_suffixes(self):
return set()
@property
def test_dirs(self):
return [self.test_root]
@property
def extension(self):
return ""
def _should_filter_by_name(self, filename):
if not filename.endswith(self.extension):
return True
for suffix in self.excluded_suffixes:
if filename.endswith(suffix):
return True
if os.path.basename(filename) in self.excluded_files:
return True
return False
def _filename_to_testname(self, filename):
if not self.extension:
return filename
return filename[:-len(self.extension)]
def _to_relpath(self, abspath, test_root):
return os.path.relpath(abspath, test_root)
def _list_test_filenames(self):
for test_dir in sorted(self.test_dirs):
test_root = os.path.join(self.test_root, test_dir)
for dirname, dirs, files in os.walk(test_root, followlinks=True):
dirs.sort()
for dir in dirs:
if dir in self.excluded_dirs or dir.startswith('.'):
dirs.remove(dir)
files.sort()
for filename in files:
abspath = os.path.join(dirname, filename)
yield self._to_relpath(abspath, test_root)
class JSTestLoader(GenericTestLoader):
@property
def extension(self):
return ".js"
class TestGenerator(object):
def __init__(self, test_count_estimate, slow_tests, fast_tests):
self.test_count_estimate = test_count_estimate
self.slow_tests = slow_tests
self.fast_tests = fast_tests
self._rebuild_iterator()
def _rebuild_iterator(self):
self._iterator = itertools.chain(self.slow_tests, self.fast_tests)
def __iter__(self):
return self
def __next__(self):
return self.next()
def next(self):
return next(self._iterator)
def merge(self, test_generator):
self.test_count_estimate += test_generator.test_count_estimate
self.slow_tests = itertools.chain(
self.slow_tests, test_generator.slow_tests)
self.fast_tests = itertools.chain(
self.fast_tests, test_generator.fast_tests)
self._rebuild_iterator()
@contextmanager
def _load_testsuite_module(name, root):
f = None
try:
(f, pathname, description) = imp.find_module("testcfg", [root])
yield imp.load_module(name + "_testcfg", f, pathname, description)
finally:
if f:
f.close()
class TestSuite(object):
@staticmethod
def Load(root, test_config):
name = root.split(os.path.sep)[-1]
with _load_testsuite_module(name, root) as module:
return module.GetSuite(name, root, test_config)
def __init__(self, name, root, test_config):
self.name = name # string
self.root = root # string containing path
self.test_config = test_config
self.tests = None # list of TestCase objects
self.statusfile = None
self._test_loader = self._test_loader_class()(
self, self._test_class(), self.test_config, self.root)
def status_file(self):
return "%s/%s.status" % (self.root, self.name)
@property
def _test_loader_class(self):
raise NotImplementedError
def ListTests(self):
return self._test_loader.list_tests()
def __initialize_test_count_estimation(self):
# Retrieves a single test to initialize the test generator.
next(iter(self.ListTests()), None)
def __calculate_test_count(self):
self.__initialize_test_count_estimation()
return self._test_loader.test_count_estimation
def load_tests_from_disk(self, statusfile_variables):
self.statusfile = statusfile.StatusFile(
self.status_file(), statusfile_variables)
test_count = self.__calculate_test_count()
slow_tests = (test for test in self.ListTests() if test.is_slow)
fast_tests = (test for test in self.ListTests() if not test.is_slow)
return TestGenerator(test_count, slow_tests, fast_tests)
def get_variants_gen(self, variants):
return self._variants_gen_class()(variants)
def _variants_gen_class(self):
return VariantsGenerator
def test_combiner_available(self):
return bool(self._test_combiner_class())
def get_test_combiner(self):
cls = self._test_combiner_class()
if cls:
return cls()
return None
def _test_combiner_class(self):
"""Returns Combiner subclass. None if suite doesn't support combining
tests.
"""
return None
def _test_class(self):
raise NotImplementedError
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