add ci tests

Author: rettinghaus

.github/workflows/ci.yml

@@ -40,4 +40,19 @@ jobs:
           python-version: ${{ matrix.python-version }}
       - run: pip install build setuptools wheel
       - run: python -m build
-      - run: python -m pip install .
+      - run: python -m pip install .
+
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: ${{ matrix.python-version }}
+      - run: pip install pytest pytest-cov
+      - run: pip install .
+      - run: pytest --cov=src --cov-report=xml --cov-report=term