Tooling(GH Actions): Define action to run tox tests/linters

.editorconfig

@@ -0,0 +1,4 @@
+root = true
+
+[*.{yml,yaml}]
+indent_size = 2

.github/workflows/tests.yml

@@ -0,0 +1,42 @@
+name: Tests (tox)
+
+on:
+  push:
+    branches: [master]
+  pull_request:
+    branches: [master]
+
+permissions:
+  contents: read
+
+jobs:
+  test:
+    name: test with ${{ matrix.py }} on ${{ matrix.os }}
+    runs-on: ${{ matrix.os }}
+    strategy:
+      fail-fast: false
+      matrix:
+        py:
+          - "3.12"
+          - "3.11"
+          - "3.10"
+          - "3.9"
+          - "3.8"
+        os:
+          - ubuntu-latest
+          - macos-latest
+          - windows-latest
+    steps:
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+      - name: Setup python for test ${{ matrix.py }}
+        uses: actions/setup-python@v4
+        with:
+          python-version: ${{ matrix.py }}
+      - name: Install tox
+        run: python -m pip install tox-gh>=1.2
+      - name: Setup test suite
+        run: tox -vv --notest
+      - name: Run test suite
+        run: tox --skip-pkg-install

tox.ini

@@ -18,3 +18,11 @@ description = run linters
 skip_install = true
 deps = flake8
 commands = flake8
+
+[gh]
+python =
+    3.12 = py312, lint
+    3.11 = py311
+    3.10 = py310
+    3.9 = py39
+    3.8 = py38