fix: fix lint sessions on generated samples (googleapis#1192)

Author: parthea

.github/sync-repo-settings.yaml

@@ -23,6 +23,7 @@ branchProtectionRules:
     - 'showcase-unit (3.9, _alternative_templates)'
     - 'showcase-unit-add-iam-methods'
     - 'integration'
+    - 'goldens-lint'
     - 'style-check'
     - 'snippetgen'
     - 'unit (3.6)'

.github/workflows/tests.yaml

@@ -316,6 +316,24 @@ jobs:
           echo "The old one will disappear after 7 days."
       - name: Integration Tests
         run: bazel test tests/integration:asset tests/integration:credentials tests/integration:logging tests/integration:redis
+  goldens-lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python 3.9
+        uses: actions/setup-python@v2
+        with:
+          python-version: 3.9
+          cache: 'pip'
+      - name: Install nox.
+        run: |
+            python -m pip install nox
+      - name: Run blacken and lint on the generated output.
+        run: |
+          nox -f tests/integration/goldens/asset/noxfile.py -s blacken lint_setup_py lint
+          nox -f tests/integration/goldens/credentials/noxfile.py -s blacken lint_setup_py lint
+          nox -f tests/integration/goldens/logging/noxfile.py -s blacken lint_setup_py lint
+          nox -f tests/integration/goldens/redis/noxfile.py -s blacken lint_setup_py lint
   style-check:
     runs-on: ubuntu-latest
     steps:

gapic/templates/.flake8.j2

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright 2020 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
+#
+#     https://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.
+
+# Generated by synthtool. DO NOT EDIT!
+[flake8]
+ignore = E203, E266, E501, W503
+exclude =
+  # Exclude generated code.
+  **/proto/**
+  **/gapic/**
+  **/services/**
+  **/types/**
+  *_pb2.py
+
+  # Standard linting exemptions.
+  **/.nox/**
+  __pycache__,
+  .git,
+  *.pyc,
+  conf.py

gapic/templates/examples/feature_fragments.j2

@@ -190,6 +190,7 @@ configs the client streaming logic should be modified to allow 2+ request object
 # Here we create a generator that yields a single `request` for 
 # demonstrative purposes.
 requests = [request]
+
 def request_generator():
     for request in requests:
         yield request
@@ -245,8 +246,8 @@ client.{{ sample.rpc|snake_case }}({{ render_request_params_unary(sample.request
 {# it's just easier to set up client side streaming and other things from outside this macro. #}
 {% macro render_calling_form(method_invocation_text, calling_form, calling_form_enum, transport, response_statements ) %}
 # Make the request
-{% if calling_form == calling_form_enum.Request %}
-response = {{ method_invocation_text|trim }}
+{% if calling_form in [calling_form_enum.Request, calling_form_enum.RequestStreamingClient] %}
+{% if response_statements %}response = {% endif %}{{ method_invocation_text|trim }}
 
 {% if response_statements %}
 # Handle the response

gapic/templates/noxfile.py.j2

@@ -16,6 +16,9 @@ CURRENT_DIRECTORY = pathlib.Path(__file__).parent.absolute()
 LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
 PACKAGE_NAME = subprocess.check_output([sys.executable, "setup.py", "--name"], encoding="utf-8")
 
+BLACK_VERSION = "black==19.10b0"
+BLACK_PATHS = ["docs", "google", "tests", "samples", "noxfile.py", "setup.py"]
+DEFAULT_PYTHON_VERSION = "3.9"
 
 nox.sessions = [
     "unit",
@@ -24,6 +27,9 @@ nox.sessions = [
     "check_lower_bounds"
     # exclude update_lower_bounds from default
     "docs",
+    "blacken",
+    "lint",
+    "lint_setup_py",
 ]
 
 @nox.session(python=['3.6', '3.7', '3.8', '3.9', '3.10'])
@@ -44,7 +50,7 @@ def unit(session):
     )
 
 
-@nox.session(python='3.9')
+@nox.session(python=DEFAULT_PYTHON_VERSION)
 def cover(session):
     """Run the final coverage report.
     This outputs the coverage report aggregating coverage from the unit
@@ -103,7 +109,7 @@ def check_lower_bounds(session):
         str(LOWER_BOUND_CONSTRAINTS_FILE),
     )
 
-@nox.session(python='3.9')
+@nox.session(python=DEFAULT_PYTHON_VERSION)
 def docs(session):
     """Build the docs for this library."""
 
@@ -123,4 +129,38 @@ def docs(session):
         os.path.join("docs", ""),
         os.path.join("docs", "_build", "html", ""),
     )
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def lint(session):
+    """Run linters.
+
+    Returns a failure if the linters find linting errors or sufficiently
+    serious code quality issues.
+    """
+    session.install("flake8", BLACK_VERSION)
+    session.run(
+        "black",
+        "--check",
+        *BLACK_PATHS,
+    )
+    session.run("flake8", "google", "tests", "samples")
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def blacken(session):
+    """Run black. Format code to uniform standard."""
+    session.install(BLACK_VERSION)
+    session.run(
+        "black",
+        *BLACK_PATHS,
+    )
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def lint_setup_py(session):
+    """Verify that setup.py is valid (including RST check)."""
+    session.install("docutils", "pygments")
+    session.run("python", "setup.py", "check", "--restructuredtext", "--strict")
+
 {% endblock %}

gapic/templates/setup.py.j2

@@ -16,6 +16,9 @@ with io.open(readme_filename, encoding='utf-8') as readme_file:
 
 setuptools.setup(
     name='{{ api.naming.warehouse_package_name }}',
+    author="Google LLC",
+    author_email="[email protected]",
+    url="https://github.com/googleapis/python-{{ api.naming.warehouse_package_name }}",
     version=version,
     long_description=readme,
     {% if api.naming.namespace %}

tests/integration/goldens/asset/.flake8

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright 2020 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
+#
+#     https://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.
+
+# Generated by synthtool. DO NOT EDIT!
+[flake8]
+ignore = E203, E266, E501, W503
+exclude =
+  # Exclude generated code.
+  **/proto/**
+  **/gapic/**
+  **/services/**
+  **/types/**
+  *_pb2.py
+
+  # Standard linting exemptions.
+  **/.nox/**
+  __pycache__,
+  .git,
+  *.pyc,
+  conf.py

tests/integration/goldens/asset/google/cloud/asset_v1/services/asset_service/async_client.py

@@ -943,7 +943,7 @@ def sample_delete_feed():
                 )
 
                 # Make the request
-                response = client.delete_feed(request=request)
+                client.delete_feed(request=request)
 
         Args:
             request (Union[google.cloud.asset_v1.types.DeleteFeedRequest, dict]):

tests/integration/goldens/asset/google/cloud/asset_v1/services/asset_service/client.py

@@ -1128,7 +1128,7 @@ def sample_delete_feed():
                 )
 
                 # Make the request
-                response = client.delete_feed(request=request)
+                client.delete_feed(request=request)
 
         Args:
             request (Union[google.cloud.asset_v1.types.DeleteFeedRequest, dict]):

tests/integration/goldens/asset/noxfile.py

@@ -27,6 +27,9 @@
 LOWER_BOUND_CONSTRAINTS_FILE = CURRENT_DIRECTORY / "constraints.txt"
 PACKAGE_NAME = subprocess.check_output([sys.executable, "setup.py", "--name"], encoding="utf-8")
 
+BLACK_VERSION = "black==19.10b0"
+BLACK_PATHS = ["docs", "google", "tests", "samples", "noxfile.py", "setup.py"]
+DEFAULT_PYTHON_VERSION = "3.9"
 
 nox.sessions = [
     "unit",
@@ -35,6 +38,9 @@
     "check_lower_bounds"
     # exclude update_lower_bounds from default
     "docs",
+    "blacken",
+    "lint",
+    "lint_setup_py",
 ]
 
 @nox.session(python=['3.6', '3.7', '3.8', '3.9', '3.10'])
@@ -55,7 +61,7 @@ def unit(session):
     )
 
 
-@nox.session(python='3.9')
+@nox.session(python=DEFAULT_PYTHON_VERSION)
 def cover(session):
     """Run the final coverage report.
     This outputs the coverage report aggregating coverage from the unit
@@ -110,7 +116,7 @@ def check_lower_bounds(session):
         str(LOWER_BOUND_CONSTRAINTS_FILE),
     )
 
-@nox.session(python='3.9')
+@nox.session(python=DEFAULT_PYTHON_VERSION)
 def docs(session):
     """Build the docs for this library."""
 
@@ -130,3 +136,36 @@ def docs(session):
         os.path.join("docs", ""),
         os.path.join("docs", "_build", "html", ""),
     )
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def lint(session):
+    """Run linters.
+
+    Returns a failure if the linters find linting errors or sufficiently
+    serious code quality issues.
+    """
+    session.install("flake8", BLACK_VERSION)
+    session.run(
+        "black",
+        "--check",
+        *BLACK_PATHS,
+    )
+    session.run("flake8", "google", "tests", "samples")
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def blacken(session):
+    """Run black. Format code to uniform standard."""
+    session.install(BLACK_VERSION)
+    session.run(
+        "black",
+        *BLACK_PATHS,
+    )
+
+
+@nox.session(python=DEFAULT_PYTHON_VERSION)
+def lint_setup_py(session):
+    """Verify that setup.py is valid (including RST check)."""
+    session.install("docutils", "pygments")
+    session.run("python", "setup.py", "check", "--restructuredtext", "--strict")