added codecov

Author: pattertj

.github/workflows/pre-commit.yml

@@ -45,3 +45,14 @@ jobs:
 
       - name: Run pre-commit
         run: pre-commit run --all-files
+
+      - name: Install dependencies
+        run: pip install pytest pytest-cov
+
+      - name: Run tests
+        run: pytest --cov --cov-branch --cov-report=xml
+
+      - name: Upload results to Codecov
+        uses: codecov/codecov-action@v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}