ci.yml

name: CI

on:
  push:
    branches: [ main ]
  pull_request:
    branches: [ main ]

jobs:
  coverage:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - name: Install deps (GTest, lcov)
        run: |
          sudo apt-get update
          sudo apt-get install -y lcov libgtest-dev cmake pkg-config libgsl-dev
          # Build GoogleTest (if you vendor it, skip this)
          sudo apt-get install -y cmake
          sudo cmake -S /usr/src/googletest -B /usr/src/googletest/build
          sudo cmake --build /usr/src/googletest/build --target install

      - name: Build tests with coverage
        run: |
          make clean
          make test COVERAGE=1 CXX=g++

      - name: Run tests
        run: ./bin/test_main

      - name: Generate coverage (LCOV)
        run: |
          lcov --capture \
               --directory obj --directory bin \
               --gcov-tool gcov-13 \
               --rc geninfo_unexecuted_blocks=1 \
               --ignore-errors empty,mismatch \
               --output-file coverage.raw.info

          # Then prune noise (tests and system headers)
          lcov --remove coverage.raw.info '/usr/*' '*/tests/*' \
               --output-file coverage.info

      - name: Upload to Codecov
        uses: codecov/codecov-action@v4
        with:
          files: coverage.info
          flags: unittests
          name: ubuntu-gcc
          fail_ci_if_error: true
        env:
          # Public repos don't need a token. Private repos: add a secret CODECOV_TOKEN
          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}