Update Github workflow to run test matrix using tox

.github/workflows/ci.yml

@@ -1,4 +1,4 @@
-name: Unit Tests, Test Coverage, and Pre-Commit Hooks
+name: CI
 
 on:
   pull_request:
@@ -10,27 +10,49 @@ on:
       - closed
 
 jobs:
-  build:
+  setup:
     runs-on: ubuntu-latest
+    outputs:
+      main-python-version: "3.12"
     steps:
       - uses: actions/checkout@v4
 
       - name: Setup Python
         uses: actions/setup-python@v4
         with:
-          python-version: "3.12"
+          python-version: ${{ outputs.main-python-version }}
+
+      - name: Cache dependencies
+        uses: actions/cache@v3
+        with:
+          path: ~/.cache/pip
+          key: ${{ runner.os }}-pip-${{ hashFiles('**/requirements.txt') }}
+          restore-keys: |
+            ${{ runner.os }}-pip-
 
       - name: Install Dependencies
         run: |
           pip install -e .
           pip install -r requirements.txt
-          pre-commit install
 
-      - name: Run Unit Tests
+  test-main-python:
+    needs: setup
+    runs-on: ubuntu-latest
+    steps:
+      - name: Unit Tests
         run: coverage run -m pytest -s tests
 
       - name: Test Coverage
         run: coverage report --fail-under=96
 
-      - name: Run Pre-Commit Hooks
-        run: pre-commit run --all-files
+      - name: Pre-Commit Hooks
+        run: |
+          pre-commit install
+          pre-commit run --all-files
+
+  test-matrix:
+    needs: setup
+    runs-on: ubuntu-latest
+    steps:
+      - name: Run Test Matrix
+        run: tox run --skip-env ${{ outputs.main-python-version }}

tox.ini

@@ -8,4 +8,6 @@ envlist =
 
 [testenv]
 deps = -r requirements.txt
-commands = pytest -s tests
+commands =
+    pytest -s tests
+    pre-commit run mypy --all-files