Integrate coverage reports

.github/workflows/python-package.yml

@@ -24,7 +24,7 @@ jobs:
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
-        python -m pip install flake8 pytest
+        python -m pip install flake8 pytest pytest-cov
         if [ -f requirements.txt ]; then pip install -r requirements.txt; fi
     - name: Lint with flake8
       run: |
@@ -35,3 +35,13 @@ jobs:
     - name: Test with pytest
       run: |
         python -m pytest
+    - name: Generate coverage report
+      run: |
+        python -m pytest  --cov=./ --cov-report=xml
+    - name: Upload coverage to Codecov
+      uses: codecov/codecov-action@v1
+      with:
+        # token: ${{ secrets.CODECOV_TOKEN }}  # not needed for public repos
+        flags: unittests
+        fail_ci_if_error: true
+        verbose: true