Added coverage to project

.github/workflows/ci-test.yml

@@ -36,6 +36,7 @@ jobs:
           check-path: "${{ matrix.path }}"
   unit-tests:
     name: "Build ${{ matrix.build_type }} with ${{ matrix.cxx }}"
+    needs: [ "codespell-check" , "format-check" ]
     runs-on: ubuntu-22.04
     strategy:
       matrix:
@@ -87,6 +88,7 @@ jobs:
         run: |
           cmake -DCMAKE_BUILD_TYPE=${{ matrix.build_type }} \
                 -DENABLE_COVERAGE=${{ matrix.build_type == 'Debug' && 'ON' || 'OFF' }} \
+                -DBUILD_PYTHON_BINDINGS=OFF \
                 -G Ninja \
                 -B ../build \
                 -S ${GITHUB_WORKSPACE}
@@ -123,16 +125,16 @@ jobs:
           retention-days: 1
           if-no-files-found: error
 
-#  upload-to-codecov:
-#    name: "Codecov report upload"
-#    needs: [ "unit-tests" , "codespell-check" , "format-check" ]
-#    runs-on: ubuntu-22.04
-#    steps:
-#      - uses: actions/checkout@v4
-#      - name: "Download artifacts"
-#        uses: actions/download-artifact@v4
-#      - name: "Upload coverage to Codecov"
-#        uses: codecov/codecov-action@v4
-#        with:
-#          fail_ci_if_error: true
-#          token: ${{ secrets.CODECOV_TOKEN }}
+  upload-to-codecov:
+    name: "Codecov report upload"
+    needs: [ "unit-tests" ]
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+      - name: "Download artifacts"
+        uses: actions/download-artifact@v4
+      - name: "Upload coverage to Codecov"
+        uses: codecov/codecov-action@v4
+        with:
+          fail_ci_if_error: true
+          token: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/python-bindings.yml

@@ -14,7 +14,7 @@ jobs:
     name: "Test Python bindings"
     strategy:
       matrix:
-        on: [ 'ubuntu-24.04', 'macos-15-intel', 'macos-26' ]
+        on: [ 'ubuntu-22.04', 'ubuntu-24.04', 'macos-15-intel', 'macos-26' ]
         python: [ '3.10', '3.11', '3.12', '3.13' ]
 
     runs-on: ${{ matrix.on }}
@@ -48,11 +48,48 @@ jobs:
         run: |
           python -m pip install --upgrade pip
           python -m pip install -r build-requirements.txt
-          python -m build
+
+          python -m build                               \
+              -Ccmake.define.ENABLE_COVERAGE=ON         \
+              -Ccmake.build-type=Debug                  \
+              -Ccmake.define.CAPIO_CL_BUILD_TESTS=OFF
+
           pip install dist/*.whl
 
       # Run unit tests
       - name: "Run Python tests"
         run: |
           python -m pip install -r test-requirements.txt
           pytest -v tests/python/test_*
+
+      - name: "Generate coverage report"
+        if: ${{ startsWith(matrix.on, 'ubuntu-') }}
+        run: |
+          pip install --upgrade gcovr
+          gcovr \
+            --exclude-throw-branches \
+            --xml coverage.xml \
+            .
+
+      - name: "Upload coverage report"
+        if: ${{ startsWith(matrix.on, 'ubuntu-') }}
+        uses: actions/upload-artifact@v4
+        with:
+          name: ${{ format('{0}-{1}-tests', matrix.on, matrix.python) }}
+          path: ./coverage.xml
+          retention-days: 1
+          if-no-files-found: error
+
+  upload-to-codecov:
+    name: "Codecov report upload"
+    needs: [ "python-tests" ]
+    runs-on: ubuntu-22.04
+    steps:
+      - uses: actions/checkout@v4
+      - name: "Download artifacts"
+        uses: actions/download-artifact@v4
+      - name: "Upload coverage to Codecov"
+        uses: codecov/codecov-action@v4
+        with:
+          fail_ci_if_error: true
+          token: ${{ secrets.CODECOV_TOKEN }}

CMakeLists.txt

@@ -34,6 +34,16 @@ if (NOT PROJECT_IS_TOP_LEVEL)
     message(STATUS "CAPIO-CL included as subproject → tests disabled")
 endif ()
 
+if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+    add_compile_options(-O0 -g)
+endif()
+
+if(ENABLE_COVERAGE)
+    message(STATUS "Building with code coverage instrumentation")
+    add_compile_options(--coverage -O0 -g)
+    add_link_options(--coverage)
+endif()
+
 #####################################
 # External projects
 #####################################

README.md

@@ -4,6 +4,7 @@
 
 [![CI](https://github.com/High-Performance-IO/CAPIO-CL/actions/workflows/ci-test.yml/badge.svg)](https://github.com/High-Performance-IO/CAPIO-CL/actions/workflows/ci-test.yml)
 [![Python Bindings](https://github.com/High-Performance-IO/CAPIO-CL/actions/workflows/python-bindings.yml/badge.svg)](https://github.com/High-Performance-IO/CAPIO-CL/actions/workflows/python-bindings.yml)
+[![codecov](https://codecov.io/gh/High-Performance-IO/CAPIO-CL/graph/badge.svg)](https://codecov.io/gh/High-Performance-IO/CAPIO-CL)
 
 ![CMake](https://img.shields.io/badge/CMake-%E2%89%A53.15-blue?logo=cmake&logoColor=white) 
 ![C++](https://img.shields.io/badge/C%2B%2B-%E2%89%A517-blueviolet?logo=c%2B%2B&logoColor=white)

pyproject.toml

@@ -24,7 +24,6 @@ Documentation = "https://capio.hpc4ai.it/docs/coord-language/"
 Repository = "https://github.com/High-Performance-IO/CAPIO-CL"
 Issues = "https://github.com/High-Performance-IO/CAPIO-CL/issues"
 
-
 [tool.scikit-build.metadata.version]
 provider = "scikit_build_core.metadata.regex"
 input = "CMakeLists.txt"