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# Copyright 2016 Google Inc. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import fnmatch
import itertools
import os
import subprocess
import tempfile
import nox
REPO_TOOLS_REQ =\
'git+https://github.com/GoogleCloudPlatform/python-repo-tools.git'
COMMON_PYTEST_ARGS = [
'-x', '--no-success-flaky-report', '--cov', '--cov-config',
'.coveragerc', '--cov-append', '--cov-report=']
# Bigtable and Speech are disabled because they use gRPC, which does not yet
# support Python 3. See: https://github.com/grpc/grpc/issues/282
TESTS_BLACKLIST = set((
'./appengine/standard',
'./bigtable',
'./speech',
'./testing'))
APPENGINE_BLACKLIST = set()
def list_files(folder, pattern):
for root, folders, files in os.walk(folder):
for filename in files:
if fnmatch.fnmatch(filename, pattern):
yield os.path.join(root, filename)
def collect_sample_dirs(start_dir, blacklist=set()):
"""Recursively collects a list of dirs that contain tests."""
# Collect all the directories that have tests in them.
for parent, subdirs, files in os.walk(start_dir):
if any(f for f in files if f[-8:] == '_test.py'):
# Don't recurse further, since py.test will do that.
del subdirs[:]
# This dir has tests in it. yield it.
yield parent
else:
# Filter out dirs we don't want to recurse into
subdirs[:] = [s for s in subdirs
if s[0].isalpha() and
os.path.join(parent, s) not in blacklist]
def get_changed_files():
pr = os.environ.get('TRAVIS_PULL_REQUEST')
if pr == 'false':
# This is not a pull request.
changed = subprocess.check_output(
['git', 'show', '--pretty=format:', '--name-only',
os.environ.get('TRAVIS_COMMIT')])
elif pr is not None:
changed = subprocess.check_output(
['git', 'diff', '--name-only',
os.environ.get('TRAVIS_COMMIT'),
os.environ.get('TRAVIS_BRANCH')])
else:
changed = ''
print('Uh... where are we?')
return set([x for x in changed.split('\n') if x])
def filter_samples(sample_dirs, changed_files):
result = []
for sample_dir in sample_dirs:
if sample_dir.startswith('./'):
sample_dir = sample_dir[2:]
for changed_file in changed_files:
if changed_file.startswith(sample_dir):
result.append(sample_dir)
return list(set(result))
def setup_appengine(session):
# Install the app engine sdk and setup import paths.
gae_root = os.environ.get('GAE_ROOT', tempfile.gettempdir())
session.env['PYTHONPATH'] = os.path.join(gae_root, 'google_appengine')
session.run('gcprepotools', 'download-appengine-sdk', gae_root)
# Create a lib directory to prevent the GAE vendor library from
# complaining.
if not os.path.exists('lib'):
os.makedirs('lib')
def run_tests_in_sesssion(
session, interpreter, use_appengine=False, skip_flaky=False,
changed_only=False, sample_directories=None):
session.interpreter = interpreter
session.install(REPO_TOOLS_REQ)
session.install('-r', 'requirements-{}-dev.txt'.format(interpreter))
if use_appengine:
setup_appengine(session)
pytest_args = COMMON_PYTEST_ARGS[:]
if skip_flaky:
pytest_args.append('-m not slow and not flaky')
# session.posargs is any leftover arguments from the command line,
# which allows users to run a particular test instead of all of them.
if session.posargs:
sample_directories = session.posargs
elif sample_directories is None:
sample_directories = collect_sample_dirs('.', TESTS_BLACKLIST)
if changed_only:
changed_files = get_changed_files()
sample_directories = filter_samples(
sample_directories, changed_files)
print('Running tests on a subset of samples: ')
print('\n'.join(sample_directories))
for sample in sample_directories:
# Install additional dependencies if they exist
dirname = sample if os.path.isdir(sample) else os.path.dirname(sample)
for reqfile in list_files(dirname, 'requirements*.txt'):
session.install('-r', reqfile)
# Ignore lib and env directories
ignore_args = [
'--ignore', os.path.join(sample, 'lib'),
'--ignore', os.path.join(sample, 'env')]
session.run(
'py.test', sample,
*(pytest_args + ignore_args),
success_codes=[0, 5]) # Treat no test collected as success.
@nox.parametrize('interpreter', ['python2.7', 'python3.4'])
def session_tests(session, interpreter):
run_tests_in_sesssion(session, interpreter)
def session_gae(session):
run_tests_in_sesssion(
session, 'python2.7', use_appengine=True,
sample_directories=collect_sample_dirs(
'appengine/standard',
APPENGINE_BLACKLIST))
def session_grpc(session):
run_tests_in_sesssion(
session,
'python2.7',
sample_directories=itertools.chain(
collect_sample_dirs('speech'),
collect_sample_dirs('bigtable')))
@nox.parametrize('subsession', ['gae', 'tests'])
def session_travis(session, subsession):
"""On travis, just run with python3.4 and don't run slow or flaky tests."""
if subsession == 'tests':
run_tests_in_sesssion(
session, 'python3.4', skip_flaky=True, changed_only=True)
else:
run_tests_in_sesssion(
session, 'python2.7', use_appengine=True, skip_flaky=True,
changed_only=True,
sample_directories=collect_sample_dirs(
'appengine/standard',
APPENGINE_BLACKLIST))
def session_lint(session):
session.install('flake8', 'flake8-import-order')
session.run(
'flake8', '--builtin=gettext', '--max-complexity=10',
'--import-order-style=google',
'--exclude',
'container_engine/django_tutorial/polls/migrations/*,.nox,.cache,env',
*(session.posargs or ['.']))
def session_reqcheck(session):
session.install(REPO_TOOLS_REQ)
if 'update' in session.posargs:
command = 'update-requirements'
else:
command = 'check-requirements'
for reqfile in list_files('.', 'requirements*.txt'):
session.run('gcprepotools', command, reqfile)