chore: add missing import in owlbot.py (#152)

* chore: add missing import in owlbot.py

* 🦉 Updates from OwlBot

See https://github.com/googleapis/repo-automation-bots/blob/main/packages/owl-bot/README.md

Co-authored-by: Owl Bot <gcf-owl-bot[bot]@users.noreply.github.com>

cloudbuild/snippets/noxfile.py

@@ -28,8 +28,9 @@
 # WARNING - WARNING - WARNING - WARNING - WARNING
 # WARNING - WARNING - WARNING - WARNING - WARNING
 
-# Copy `noxfile_config.py` to your directory and modify it instead.
+BLACK_VERSION = "black==19.10b0"
 
+# 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
@@ -38,7 +39,7 @@
 
 TEST_CONFIG = {
  # You can opt out from the test for specific Python versions.
- 'ignored_versions': ["2.7"],
+ 'ignored_versions': [],
 
  # Old samples are opted out of enforcing Python type hints
  # All new samples should feature them
@@ -50,7 +51,10 @@
  # 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': {},
@@ -84,15 +88,15 @@ def get_pytest_env_vars() -> Dict[str, str]:
 
 
 # DO NOT EDIT - automatically generated.
-# All versions used to tested samples.
-ALL_VERSIONS = ["2.7", "3.6", "3.7", "3.8", "3.9"]
+# All versions used to test samples.
+ALL_VERSIONS = ["3.6", "3.7", "3.8", "3.9"]
 
 # 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 = bool(os.environ.get("INSTALL_LIBRARY_FROM_SOURCE", False))
+INSTALL_LIBRARY_FROM_SOURCE = os.environ.get("INSTALL_LIBRARY_FROM_SOURCE", False) in ("True", "true")
 #
 # Style Checks
 #
@@ -156,7 +160,7 @@ def lint(session: nox.sessions.Session) -> None:
 
 @nox.session
 def blacken(session: nox.sessions.Session) -> None:
- session.install("black")
+ session.install(BLACK_VERSION)
  python_files = [path for path in os.listdir(".") if path.endswith(".py")]
 
  session.run("black", *python_files)
@@ -170,12 +174,21 @@ def blacken(session: nox.sessions.Session) -> None:
 
 
 def _session_tests(session: nox.sessions.Session, post_install: Callable = None) -> None:
+ 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."""
  if os.path.exists("requirements.txt"):
- session.install("-r", "requirements.txt")
+ if os.path.exists("constraints.txt"):
+ session.install("-r", "requirements.txt", "-c", "constraints.txt")
+ else:
+ session.install("-r", "requirements.txt")
 
  if os.path.exists("requirements-test.txt"):
- session.install("-r", "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")
 
  if INSTALL_LIBRARY_FROM_SOURCE:
  session.install("-e", _get_repo_root())