[CI] Add tests coverage in libmamba

.github/workflows/unix.yml

@@ -38,10 +38,13 @@ jobs:
           restore-keys: |
             libmamba-${{ matrix.os }}
       - name: Build libmamba
+        env:
+          enable_cov: ${{ ((matrix.os == 'ubuntu-latest') && (matrix.build_type == 'Debug')) || false }}
         shell: bash -l {0}
         run: |
           cmake -B build/ \
             -D CMAKE_BUILD_TYPE=${{ matrix.build_type }} \
+            -D ENABLE_COVERAGE=${{ env.enable_cov }} \
             -D BUILD_LIBMAMBA=ON \
             -D BUILD_SHARED=ON \
             -D BUILD_LIBMAMBA_TESTS=ON \
@@ -54,6 +57,21 @@ jobs:
         run: |
           unset CONDARC  # Interferes with tests
           cd build && ninja test
+      - name: Coverage
+        if: ${{ ((matrix.os == 'ubuntu-latest') && (matrix.build_type == 'Debug')) || false }}
+        shell: bash -l {0}
+        run: |
+          cd build && ninja coverage
+      - name: Upload coverage to Coveralls
+        if: ${{ ((matrix.os == 'ubuntu-latest') && (matrix.build_type == 'Debug')) || false }}
+        uses: coverallsapp/github-action@v2
+        env:
+          NODE_COVERALLS_DEBUG: 1
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          file: ${{github.workspace}}/build/coverage.info
+          format: lcov
+          git-branch: gcov
       - name: Show build cache statistics
         run: sccache --show-stats
 

libmamba/CMakeLists.txt

@@ -65,24 +65,31 @@ endif ()
 
 option(ENABLE_ASAN "Enable Address-Sanitizer (currently only supported on GCC and Clang)" OFF)
 
-if(ENABLE_ASAN)
+if (ENABLE_ASAN)
     message(WARNING "Address-Sanitizer instrumentation will be injected into binaries - do not release these binaries")
     add_compile_options(-fno-omit-frame-pointer  -fsanitize=address)
     add_link_options(-fno-omit-frame-pointer  -fsanitize=address)
 endif()
 
-if(ENABLE_TSAN)
+if (ENABLE_TSAN)
     message(WARNING "Thread-Sanitizer instrumentation will be injected into binaries - do not release these binaries")
     add_compile_options(-fno-omit-frame-pointer  -fsanitize=thread)
     add_link_options(-fno-omit-frame-pointer  -fsanitize=thread)
 endif()
 
-if(ENABLE_USAN)
+if (ENABLE_USAN)
     message(WARNING "Undefined-Sanitizer instrumentation will be injected into binaries - do not release these binaries")
     add_compile_options(-fno-omit-frame-pointer  -fsanitize=undefined)
     add_link_options(-fno-omit-frame-pointer  -fsanitize=undefined)
 endif()
 
+# Code coverage
+option(ENABLE_COVERAGE "Enable code testing coverage" OFF)
+
+if (ENABLE_COVERAGE)
+  add_compile_options(--coverage)
+  add_link_options(--coverage)
+endif()
 
 # Source files
 # ============

libmamba/environment-dev.yml

@@ -18,4 +18,5 @@ dependencies:
   - cli11 >=2.2
   - spdlog
   - fmt
+  - lcov
   - sel(win): winreg

libmamba/tests/CMakeLists.txt

@@ -116,3 +116,16 @@ target_compile_definitions(
 target_compile_features(test_libmamba PUBLIC cxx_std_17)
 
 add_custom_target(test COMMAND test_libmamba DEPENDS test_libmamba)
+
+# Generate tests coverage report
+if (ENABLE_COVERAGE)
+  find_program(LCOV lcov REQUIRED)
+  find_program(GENHTML genhtml REQUIRED)
+
+  add_custom_target(coverage
+    # Gather data
+    COMMAND ${LCOV} --directory . --capture --output-file coverage.info
+    # Generate report
+    COMMAND ${GENHTML} --demangle-cpp -o coverage coverage.info
+    WORKING_DIRECTORY ${CMAKE_BINARY_DIR})
+endif()