Switch to nox for automated testing (pypa#212)

Author: chrysle

.github/workflows/test.yml

@@ -20,6 +20,8 @@ jobs:
       with:
         python-version: ${{ matrix.python }}
     - name: Install test dependencies
-      run: python -m pip install -U tox
+      run: python -m pip install --upgrade nox
     - name: Test
-      run: python -m tox -e py
+      run: python -m nox -s tests-${{ matrix.python }}
+    - name: Lint
+      run: python -m nox -s lint

.gitignore

@@ -7,7 +7,8 @@ dist/
 __pycache__/
 *.so
 *~
+venv/
 
-# due to using tox and pytest
-.tox
+# due to using nox and pytest
+.nox
 .cache

noxfile.py

@@ -0,0 +1,52 @@
+# this file is *not* meant to cover or endorse the use of nox or pytest or
+# testing in general,
+#
+#  It's meant to show the use of:
+#
+#  - check-manifest
+#     confirm items checked into vcs are in your sdist
+#  - readme_renderer (when using a reStructuredText README)
+#     confirms your long_description will render correctly on PyPI.
+#
+#  and also to help confirm pull requests to this project.
+
+import nox
+import os
+
+nox.options.sessions = ["lint"]
+
+# Define the minimal nox version required to run
+nox.options.needs_version = ">= 2024.3.2"
+
+
+@nox.session
+def lint(session):
+    session.install("flake8")
+    session.run(
+        "flake8", "--exclude", ".nox,*.egg,build,data",
+        "--select", "E,W,F", "."
+    )
+
+
+@nox.session
+def build_and_check_dists(session):
+    session.install("build", "check-manifest >= 0.42", "twine")
+    # If your project uses README.rst, uncomment the following:
+    # session.install("readme_renderer")
+
+    session.run("check-manifest", "--ignore", "noxfile.py,tests/**")
+    session.run("python", "-m", "build")
+    session.run("python", "-m", "twine", "check", "dist/*")
+
+
+@nox.session(python=["3.8", "3.9", "3.10", "3.11", "3.12"])
+def tests(session):
+    session.install("pytest")
+    build_and_check_dists(session)
+
+    generated_files = os.listdir("dist/")
+    generated_sdist = os.path.join("dist/", generated_files[1])
+
+    session.install(generated_sdist)
+
+    session.run("py.test", "tests/", *session.posargs)