feat: Add Github action to install & test on different Python env versions

Author: kpatryk

.github/workflows/test.yml

@@ -0,0 +1,69 @@
+name: Test
+
+on:
+  push:
+    branches: [main, feat/action]
+  pull_request:
+    branches: [main]
+
+# Cancel in-progress runs on new pushes to the same branch
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  test:
+    name: Test (Python ${{ matrix.python-version }}, ${{ matrix.os }})
+    runs-on: ${{ matrix.os }}
+    strategy:
+      # Run all matrix jobs in parallel; don't cancel others if one fails
+      fail-fast: false
+      matrix:
+        os: [ubuntu-latest, macos-latest]
+        python-version: ["3.10", "3.11", "3.12", "3.13"]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1 # Fetch only the latest commit for efficiency
+
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Upgrade pip and install build tools
+        run: |
+          python -m pip install --upgrade pip uv pre-commit
+
+      - name: Cache UV
+        uses: actions/cache@v4
+        with:
+          path: |
+            ${{ runner.os == 'macOS' && '~/Library/Caches/uv' || '~/.cache/uv' }}
+          key: uv-${{ runner.os }}-${{ hashFiles('uv.lock', 'pyproject.toml') }}
+          restore-keys: |
+            uv-${{ runner.os }}-
+
+      - name: Install dev dependencies and run Copier template tests
+        run: |
+          make install
+          make test
+
+      - name: Upload pytest artifacts (if generated)
+        if: always() && (success() || failure())
+        uses: actions/upload-artifact@v4
+        with:
+          name: pytest-results-${{ matrix.os }}-${{ matrix.python-version }}
+          path: |
+            .pytest_cache/
+            htmlcov/
+            .coverage
+          retention-days: 7
+        continue-on-error: true
+
+      - name: Print test summary
+        if: always()
+        run: |
+          echo "Test run completed for Python ${{ matrix.python-version }} on ${{ matrix.os }}"