Fix code coverage step

Author: tarunbatra

.github/workflows/main.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v2
         with:
-          python-version: "3.x"
+          python-version: "3.7"
 
       - name: Install global dependencies
         run: python -m pip install -U pip setuptools wheel
@@ -40,10 +40,10 @@ jobs:
         run: pip install .
 
       - name: Run tests
-        run: coverage run --source src -m unittest discover -s tests -v
+        run: coverage run -m unittest discover -s tests -v
 
       - name: Generate coverage report
-        run: coverage report
+        run: coverage report && coverage xml -i
 
       - name: Upload coverage report to Codecov
         uses: codecov/codecov-action@v1