added the tests for python and C++ and combined test report into unified reports

Author: nagajaideep

.github/workflows/ci.yml

@@ -200,3 +200,54 @@ jobs:
       - name: Build Documentation
         run: |
           sphinx-build -b html docs/source/ docs/build/html
+  
+  test-python-cpp-unified-report:
+    runs-on: ubuntu-latest
+    timeout-minutes: 20
+    steps:
+      - name: Checkout Repository
+        uses: actions/checkout@v4
+        
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+        
+      - name: Install Python Dependencies
+        run: |
+          python -m pip install --upgrade pip
+          python -m pip install pytest pytest-cov cobertura-merge
+        
+      - name: Run Python Tests
+        run: |
+          pytest tests/ --cov=src --cov-report xml:coverage-python.xml --cov-report html:coverage-html
+        
+      - name: Install C++ Dependencies
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y g++ gcov lcov
+        
+      - name: Compile and Run C++ Tests
+        run: |
+          g++ -o tests/test_cpp tests/test.cpp
+          ./tests/test_cpp
+          lcov --capture --directory . --output-file coverage-cpp.info
+
+      - name: Convert C++ Coverage to XML
+        run: |
+          python -m pip install gcovr
+          gcovr -r . --xml-pretty --output coverage-cpp.xml
+        
+      - name: Combine Coverage Reports
+        run: |
+          python -m cobertura_merge coverage-python.xml coverage-cpp.xml -o unified-reports/combined-coverage.xml
+        
+      - name: Generate HTML Report
+        run: |
+          python -m pip install coverage html-report
+          coverage html -i --data unified-reports/combined-coverage.xml --directory unified-reports/html
+        
+      - name: Upload Combined Coverage to Codecov
+        run: bash <(curl -s https://codecov.io/bash) -f unified-reports/combined-coverage.xml
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}