Report test coverage to codecov

Author: alvarolopez

.github/workflows/codecov.yml

@@ -0,0 +1,35 @@
+name: Code Coverage
+
+on:
+  - pull_request
+
+jobs:
+  code-coverage:
+    runs-on: ubuntu-20.04
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Set up Python 3.10
+        uses: actions/setup-python@v3
+        with:
+          python-version: '3.10'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install tox==3.24.5
+          python -m venv .venv
+          source .venv/bin/activate
+          pip install -e .
+
+      - name: Run tox
+        run: tox -e cov
+
+      - name: Upload coverage to Codecov
+        uses: codecov/codecov-action@v3
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          fail_ci_if_error: true
+          override_branch: main
+          verbose: true