Merge branch '18-build-add-code-coverage-report' into staging

Author: steven-varga

.github/workflows/ci.yml

@@ -308,4 +308,64 @@ jobs:
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           publish_dir: ./${{ steps.badge_dir.outputs.dir }}
-          destination_dir: ${{ steps.badge_dir.outputs.dir }}
+          destination_dir: ${{ steps.badge_dir.outputs.dir }}
+
+  coverage:
+    name: coverage / ubuntu-24.04 / gcc-14
+    runs-on: ubuntu-24.04
+    needs: build
+    
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v5
+        with:
+          fetch-depth: 0
+
+      - name: Install dependencies
+        shell: bash
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y \
+            cmake \
+            ninja-build \
+            gcc-14 \
+            g++-14 \
+            lcov
+
+      - name: Configure
+        shell: bash
+        env:
+          CC: gcc-14
+          CXX: g++-14
+        run: |
+          cmake -B build -G Ninja \
+            -DCMAKE_BUILD_TYPE=Debug \
+            -DCMAKE_C_STANDARD=17 \
+            -DCMAKE_CXX_STANDARD=23 \
+            -DCMAKE_C_COMPILER="$CC" \
+            -DCMAKE_CXX_COMPILER="$CXX" \
+            -DCMAKE_C_FLAGS="--coverage" \
+            -DCMAKE_CXX_FLAGS="--coverage" \
+            -DCMAKE_EXE_LINKER_FLAGS="--coverage" \
+            -DCMAKE_SHARED_LINKER_FLAGS="--coverage"
+
+      - name: Build
+        run: cmake --build build --parallel
+
+      - name: Test
+        run: ctest --test-dir build --output-on-failure
+
+      - name: Capture coverage
+        shell: bash
+        run: |
+          lcov --directory build --capture --output-file coverage.info
+          lcov --remove coverage.info '/usr/*' '*/test/*' '*/_deps/*' --output-file coverage.info
+          lcov --list coverage.info
+
+      - name: Upload coverage reports to Codecov
+        uses: codecov/codecov-action@v5
+        with:
+          files: coverage.info
+          fail_ci_if_error: true
+        env:
+          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

README.md

@@ -1,6 +1,6 @@
 
 [![CI](https://github.com/vargalabs/libdecimal/actions/workflows/ci.yml/badge.svg)](https://github.com/vargalabs/libdecimal/actions/workflows/ci.yml)
-[![codecov](https://codecov.io/gh/vargalabs/libdecimal/branch/main/graph/badge.svg)](https://codecov.io/gh/vargalabs/libdecimal)
+[![codecov](https://codecov.io/gh/vargalabs/libdecimal/graph/badge.svg?token=F6YCNG3HEY)](https://codecov.io/gh/vargalabs/libdecimal)
 [![MIT License](https://img.shields.io/badge/license-MIT-green.svg)](LICENSE)
 [![DOI](https://zenodo.org/badge/DOI/10.5281/zenodo.19323619.svg)](https://doi.org/10.5281/zenodo.19323619)
 [![GitHub release](https://img.shields.io/github/v/release/vargalabs/libdecimal.svg)](https://github.com/vargalabs/libdecimal/releases)