feat: [WIP] The first stage of nox implementation (#468)

.gitignore

@@ -1,8 +1,16 @@
-*.egg-info
 *.py[co]
-build/
 *.sw[op]
-.tox/
+
+# Packages
+*.egg-info
+build
 MANIFEST
-dist/
+dist
 django_tests
+
+# Unit test / coverage reports
+.coverage
+.nox
+
+# JetBrains
+.idea

.kokoro/build.sh

@@ -29,13 +29,20 @@ export GOOGLE_APPLICATION_CREDENTIALS=${KOKORO_GFILE_DIR}/service-account.json
 # Setup project id.
 export PROJECT_ID=$(cat "${KOKORO_GFILE_DIR}/project-id.json")
 
-# Install tox
-python3.6 -m pip install --upgrade --quiet tox flake8 isort
-python3.6 -m tox --version
+# Remove old nox
+python3.6 -m pip uninstall --yes --quiet nox-automation
 
-python3.6 -m tox
-python3.6 -m isort --recursive --check-only --diff
-python3.6 -m flake8
+# Install nox
+python3.6 -m pip install --upgrade --quiet nox
+python3.6 -m nox --version
+
+# If NOX_SESSION is set, it only runs the specified session,
+# otherwise run all the sessions.
+if [[ -n "${NOX_SESSION:-}" ]]; then
+    python3.6 -m nox -s "${NOX_SESSION:-}"
+else
+    python3.6 -m nox
+fi
 
 # Export essential environment variables for Django tests.
 export RUNNING_SPANNER_BACKEND_TESTS=1

noxfile.py

@@ -0,0 +1,33 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright 2020 Google LLC
+#
+# Use of this source code is governed by a BSD-style
+# license that can be found in the LICENSE file or at
+# https://developers.google.com/open-source/licenses/bsd
+
+
+from __future__ import absolute_import
+
+import nox
+import os
+
+
+def default(session):
+    # Install all test dependencies, then install this package in-place.
+    session.install("mock", "pytest", "pytest-cov")
+    session.install("-e", ".")
+
+    # Run py.test against the unit tests.
+    session.run(
+        "py.test",
+        "--quiet",
+        os.path.join("tests", "spanner_dbapi"),
+        *session.posargs,
+    )
+
+
+@nox.session(python=["3.5", "3.6", "3.7", "3.8"])
+def unit(session):
+    """Run the unit test suite."""
+    default(session)