added tox testing

.github/workflows/tox.yml

@@ -0,0 +1,28 @@
+name: Run Tox tests
+
+on:
+  - push
+  - pull_request
+
+jobs:
+  build:
+    runs-on: ${{ matrix.platform }}
+    strategy:
+      matrix:
+        platform: [ubuntu-latest]
+        python-version: ['3.10', '3.11']
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Set up Python ${{ matrix.python-version }}
+      uses: actions/setup-python@v4
+      with:
+        python-version: ${{ matrix.python-version }}
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        python -m pip install tox tox-gh-actions
+    - name: Test with tox
+      run: tox
+      env:
+        PLATFORM: ${{ matrix.platform }}

requirements-dev.txt

@@ -1,4 +1,6 @@
 black==23.7.0
 flake8==6.1.0
 flake8-annotations==3.0.1
-mypy==1.4.1
+flake8-warnings==0.4.0
+mypy==1.4.1
+pytest==7.4.0

tox.ini

@@ -0,0 +1,15 @@
+[tox]
+isolated_build = true
+envlist = py310, py311
+
+[gh-actions]
+python =
+    3.10: py310
+    3.11: py311
+
+[testenv]
+deps = -rrequirements-dev.txt
+commands =
+    pytest tests
+    black --check .
+    mypy .