CI: GitHub Action for testing

runs pytest on multiple platforms, python versions, through Nox
only runs on PRs, push to main, and manual triggers

.github/workflows/test.yml

@@ -0,0 +1,39 @@
+name: Test
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  test:
+    name: ${{ matrix.os}} / py${{ matrix.python_version }}
+    runs-on: ${{ matrix.os }}-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [Ubuntu, macOS]
+        python_version: ['3.8', '3.9', '3.10', '3.11', '3.12']
+    steps:
+      - uses: actions/checkout@v3
+
+      - uses: actions/setup-python@v4
+        name: Install Python ${{ matrix.python_version }}
+        with:
+          python-version: ${{ matrix.python_version }}
+          architecture: x64
+
+      - name: Install (testing) requirements
+        run: |
+          python -m pip install --upgrade pip setuptools
+          pip install -r requirements.txt
+      - name: Install multyscale to be tested
+        run: |
+          pip install .
+      - name: Run tests for ${{ matrix.python_version }} through nox
+        run: |
+          pipx run nox --non-interactive --error-on-missing-interpreter --session "tests-${{ matrix.python_version }}"

noxfile.py

@@ -1,6 +1,13 @@
 import nox
 
 
+@nox.session(python=["3.8", "3.9", "3.10", "3.11", "3.12"])
+def tests(session):
+    session.install("-r", "requirements.txt")
+    session.install(".")
+    session.run("pytest")
+
+
 @nox.session(python="3.12")
 def lint(session):
     # Run the linters (via pre-commit)

requirements.txt

@@ -0,0 +1 @@
+.[dev,docs]