ci: setup unit tests with coverage

Author: perzeuss

.github/workflows/unit-test.yaml

@@ -19,13 +19,24 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.10'
+          python-version: '3.12'
 
       - name: Install dependencies
         run: |
           python -m pip install --upgrade pip
           pip install -r requirements.txt
 
-      - name: Run Unit Tests
+      - name: Install dependencies
         run: |
-          python -m unittest discover -s tests
+          python -m pip install --upgrade pip
+          pip install pytest pytest-cov
+          if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
+
+      - name: Test with pytest
+        run: |
+          pytest --cov-branch --cov-report=xml tests/
+
+      - name: Upload coverage reports to Codecov
+          uses: codecov/codecov-action@v5
+          with:
+            token: ${{ secrets.CODECOV_TOKEN }}