Update ci.yml

Author: bitdove

.github/workflows/ci.yml

@@ -36,8 +36,14 @@ jobs:
         ./build.sh
         ./bin/test_${{ matrix.project }}
         ./clean.sh
+    # Step 4: 
+    - name: Generate coverage report
+      run: |
+        lcov --directory . --capture --output-file coverage.info
+        lcov --remove coverage.info '/usr/*' --output-file coverage.info
+        lcov --list coverage.info
 
-    # Step 4: Upload coverage to Codecov
+    # Step 5: Upload coverage to Codecov
     - name: Upload coverage to Codecov
       run: bash <(curl -s https://codecov.io/bash)
       env: