nox file

.flake8

@@ -0,0 +1,10 @@
+[flake8]
+ignore = E501
+exclude =
+    .git,
+    .nox,
+    .pytest_cache,
+    __pycache__,
+    build,
+    dist,
+    *_pb2.py

noxfile.py

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+import os
+import sys
+
+import nox
+from nox import Session
+
+IN_CI = 'GITLAB_CI' in os.environ
+PARALLEL = os.environ.get('TEST_PARALLEL', 'false') == 'true'
+# Only reuse virtualenvs in local testing
+nox.options.reuse_existing_virtualenvs = not IN_CI
+environment = {**os.environ}
+
+
+@nox.session()
+def lint(session):
+    session.install('flake8')
+    session.run('flake8', 'src')
+    session.run('flake8', 'tests')
+
+
+@nox.session
+def safety(session):
+    session.install('wheel==0.38.*')
+    session.install('safety')
+    session.run('safety', 'check', '--full-report')
+
+
+@nox.session()
+def tests(session: Session):
+    sys.path.insert(0, os.path.dirname(os.path.realpath(__file__)) + os.sep + 'src')
+
+    session.run(sys.executable, "-m", "pip", "install", "-U", "pip")
+    session.run(sys.executable, 'setup.py', 'install', env={**environment, 'PYTHONPATH': os.pathsep.join(sys.path)})
+
+    if PARALLEL:
+        session.install('pytest-xdist')
+        num_proc = os.environ.get('TEST_NUM_PROCESSES', '8')
+        num_proc = int(num_proc) if num_proc != 'auto' else 'auto'
+        session.run('pytest', '--cov-config=.coveragerc', '--dist=loadfile', f'--numprocesses={num_proc}',
+                    '--tx', 'popen//python=python', '--cov=src', '--junitxml=tests/report.xml', 'tests',
+                    env={**environment, 'PYTHONPATH': os.pathsep.join(sys.path)})
+    else:
+        session.run('pytest', 'tests', env={**environment, 'PYTHONPATH': os.pathsep.join(sys.path)})
+

tests/test_dummy.py

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+def test_dummy():
+    assert not False