# Copyright 2019 Google LLC

#

# 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.

from __future__ import print_function

import glob

import os

from pathlib import Path

import sys

from typing import Callable, Dict, List, Optional

import nox

# WARNING - WARNING - WARNING - WARNING - WARNING

# WARNING - WARNING - WARNING - WARNING - WARNING

# DO NOT EDIT THIS FILE EVER!

# WARNING - WARNING - WARNING - WARNING - WARNING

# WARNING - WARNING - WARNING - WARNING - WARNING

BLACK_VERSION = "black==22.3.0"

# Copy `noxfile_config.py` to your directory and modify it instead.

# `TEST_CONFIG` dict is a configuration hook that allows users to

# modify the test configurations. The values here should be in sync

# with `noxfile_config.py`. Users will copy `noxfile_config.py` into

# their directory and modify it.

TEST_CONFIG = {

# You can opt out from the test for specific Python versions.

"ignored_versions": [],

# Old samples are opted out of enforcing Python type hints

# All new samples should feature them

"enforce_type_hints": False,

# An envvar key for determining the project id to use. Change it

# to 'BUILD_SPECIFIC_GCLOUD_PROJECT' if you want to opt in using a

# build specific Cloud project. You can also use your own string

# to use your own Cloud project.

"gcloud_project_env": "GOOGLE_CLOUD_PROJECT",

# 'gcloud_project_env': 'BUILD_SPECIFIC_GCLOUD_PROJECT',

# If you need to use a specific version of pip,

# change pip_version_override to the string representation

# of the version number, for example, "20.2.4"

"pip_version_override": None,

# A dictionary you want to inject into your test. Don't put any

# secrets here. These values will override predefined values.

"envs": {},

}

try:

# Ensure we can import noxfile_config in the project's directory.

sys.path.append(".")

from noxfile_config import TEST_CONFIG_OVERRIDE

except ImportError as e:

print("No user noxfile_config found: detail: {}".format(e))

TEST_CONFIG_OVERRIDE = {}

# Update the TEST_CONFIG with the user supplied values.

TEST_CONFIG.update(TEST_CONFIG_OVERRIDE)

def get_pytest_env_vars() -> Dict[str, str]:

"""Returns a dict for pytest invocation."""

ret = {}

# Override the GCLOUD_PROJECT and the alias.

env_key = TEST_CONFIG["gcloud_project_env"]

# This should error out if not set.

ret["GOOGLE_CLOUD_PROJECT"] = os.environ[env_key]

# Apply user supplied envs.

ret.update(TEST_CONFIG["envs"])

return ret

# DO NOT EDIT - automatically generated.

# All versions used to test samples.

ALL_VERSIONS = ["3.6", "3.7", "3.8", "3.9", "3.10"]

# Any default versions that should be ignored.

IGNORED_VERSIONS = TEST_CONFIG["ignored_versions"]

TESTED_VERSIONS = sorted([v for v in ALL_VERSIONS if v not in IGNORED_VERSIONS])

INSTALL_LIBRARY_FROM_SOURCE = os.environ.get("INSTALL_LIBRARY_FROM_SOURCE", False) in (

"True",

"true",

)

# Error if a python version is missing

nox.options.error_on_missing_interpreters = True

#

# Style Checks

#

def _determine_local_import_names(start_dir: str) -> List[str]:

"""Determines all import names that should be considered "local".

This is used when running the linter to insure that import order is

properly checked.

"""

file_ext_pairs = [os.path.splitext(path) for path in os.listdir(start_dir)]

return [

basename

for basename, extension in file_ext_pairs

if extension == ".py"

or os.path.isdir(os.path.join(start_dir, basename))

and basename not in ("__pycache__")

]

# Linting with flake8.

#

# We ignore the following rules:

# E203: whitespace before ‘:’

# E266: too many leading ‘#’ for block comment

# E501: line too long

# I202: Additional newline in a section of imports

#

# We also need to specify the rules which are ignored by default:

# ['E226', 'W504', 'E126', 'E123', 'W503', 'E24', 'E704', 'E121']

FLAKE8_COMMON_ARGS = [

"--show-source",

"--builtin=gettext",

"--max-complexity=20",

"--import-order-style=google",

"--exclude=.nox,.cache,env,lib,generated_pb2,*_pb2.py,*_pb2_grpc.py",

"--ignore=E121,E123,E126,E203,E226,E24,E266,E501,E704,W503,W504,I202",

"--max-line-length=88",

]

@nox.session

def lint(session: nox.sessions.Session) -> None:

if not TEST_CONFIG["enforce_type_hints"]:

session.install("flake8", "flake8-import-order")

else:

session.install("flake8", "flake8-import-order", "flake8-annotations")

local_names = _determine_local_import_names(".")

args = FLAKE8_COMMON_ARGS + [

"--application-import-names",

",".join(local_names),

".",

]

session.run("flake8", *args)

#

# Black

#

@nox.session

def blacken(session: nox.sessions.Session) -> None:

session.install(BLACK_VERSION)

python_files = [path for path in os.listdir(".") if path.endswith(".py")]

session.run("black", *python_files)

#

# Sample Tests

#

PYTEST_COMMON_ARGS = ["--junitxml=sponge_log.xml"]

def _session_tests(

session: nox.sessions.Session, post_install: Callable = None

) -> None:

# check for presence of tests

test_list = glob.glob("*_test.py") + glob.glob("test_*.py")

test_list.extend(glob.glob("tests"))

if len(test_list) == 0:

print("No tests found, skipping directory.")

return

if TEST_CONFIG["pip_version_override"]:

pip_version = TEST_CONFIG["pip_version_override"]

session.install(f"pip=={pip_version}")

"""Runs py.test for a particular project."""

concurrent_args = []

if os.path.exists("requirements.txt"):

if os.path.exists("constraints.txt"):

session.install("-r", "requirements.txt", "-c", "constraints.txt")

else:

session.install("-r", "requirements.txt")

with open("requirements.txt") as rfile:

packages = rfile.read()

if os.path.exists("requirements-test.txt"):

if os.path.exists("constraints-test.txt"):

session.install(

"-r", "requirements-test.txt", "-c", "constraints-test.txt"

)

else:

session.install("-r", "requirements-test.txt")

with open("requirements-test.txt") as rtfile:

packages += rtfile.read()

if INSTALL_LIBRARY_FROM_SOURCE:

session.install("-e", _get_repo_root())

if post_install:

post_install(session)

if "pytest-parallel" in packages:

concurrent_args.extend(['--workers', 'auto', '--tests-per-worker', 'auto'])

elif "pytest-xdist" in packages:

concurrent_args.extend(['-n', 'auto'])

session.run(

"pytest",

*(PYTEST_COMMON_ARGS + session.posargs + concurrent_args),

# Pytest will return 5 when no tests are collected. This can happen

# on travis where slow and flaky tests are excluded.

# See http://doc.pytest.org/en/latest/_modules/_pytest/main.html

success_codes=[0, 5],

env=get_pytest_env_vars(),

)

@nox.session(python=ALL_VERSIONS)

def py(session: nox.sessions.Session) -> None:

"""Runs py.test for a sample using the specified version of Python."""

if session.python in TESTED_VERSIONS:

_session_tests(session)

else:

session.skip(

"SKIPPED: {} tests are disabled for this sample.".format(session.python)

)

#

# Readmegen

#

def _get_repo_root() -> Optional[str]:

""" Returns the root folder of the project. """

# Get root of this repository. Assume we don't have directories nested deeper than 10 items.

p = Path(os.getcwd())

for i in range(10):

if p is None:

break

if Path(p / ".git").exists():

return str(p)

# .git is not available in repos cloned via Cloud Build

# setup.py is always in the library's root, so use that instead

# https://github.com/googleapis/synthtool/issues/792

if Path(p / "setup.py").exists():

return str(p)

p = p.parent

raise Exception("Unable to detect repository root.")

GENERATED_READMES = sorted([x for x in Path(".").rglob("*.rst.in")])

@nox.session

@nox.parametrize("path", GENERATED_READMES)

def readmegen(session: nox.sessions.Session, path: str) -> None:

"""(Re-)generates the readme for a sample."""

session.install("jinja2", "pyyaml")

dir_ = os.path.dirname(path)

if os.path.exists(os.path.join(dir_, "requirements.txt")):

session.install("-r", os.path.join(dir_, "requirements.txt"))

in_file = os.path.join(dir_, "README.rst.in")

session.run(

"python", _get_repo_root() + "/scripts/readme-gen/readme_gen.py", in_file

)