init gcov

.github/workflows/gcov.yml

@@ -0,0 +1,50 @@
+name: Minimal Installation
+
+on:  # yamllint disable-line rule:truthy
+  push:
+    branches:
+      - master
+  pull_request:
+
+jobs:
+
+  import:
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      matrix:
+        os: [ubuntu-latest]
+        python-version: [3.9]
+        torch-version: [1.11.0]
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python ${{ matrix.python-version }}
+        uses: actions/setup-python@v2
+        with:
+          python-version: ${{ matrix.python-version }}
+
+      - name: Install PyTorch ${{ matrix.torch-version }}+cpu
+        run: |
+          pip install torch==${{ matrix.torch-version}}+cpu -f https://download.pytorch.org/whl/torch_stable.html
+      - name: Configure
+        run: |
+          Torch_DIR=`python -c 'import torch;print(torch.utils.cmake_prefix_path)'` cmake -S . -B build -DWITH_COV=ON -DCMAKE_BUILD_TYPE=Debug
+      - name: Build
+        run: |
+          cmake --build build --config Debug
+      - name: Test
+        run: |
+          cd build
+          ctest -C Debug --output-on-failure --verbose
+          cd ..
+      - name: Gcov
+        run: |
+          pip install gcovr
+          gcovr -r pyg_lib/csrc --xml cov.xml
+
+      - name: Upload coverage
+        uses: codecov/codecov-action@v2
+        with:
+          fail_ci_if_error: false
+          files: cov.xml

CMakeLists.txt

@@ -6,13 +6,18 @@ set(PYG_VERSION 0.0.0)
 option(WITH_CUDA "Enable CUDA support" OFF)
 option(USE_PYTHON "Link to Python when building" ON)
 option(BUILD_TEST "Enable testing" ON)
+option(WITH_COV "Enable coverage" OFF)
 
 if(WITH_CUDA)
   enable_language(CUDA)
   add_definitions(-DWITH_CUDA)
   set(CMAKE_CUDA_FLAGS "${CMAKE_CUDA_FLAGS} --expt-relaxed-constexpr")
 endif()
 
+if(WITH_COV)
+  set(CMAKE_CXX_FLAGS --coverage)
+endif()
+
 if (USE_PYTHON)
   add_definitions(-DUSE_PYTHON)
   find_package(Python3 REQUIRED COMPONENTS Development)