name: Coverage

on: [push, pull_request]
jobs:
  coverage:
    runs-on: ubuntu-20.04
    steps:
      - uses: actions/checkout@v2
      - name: dependencies
        shell: bash
        run: |
          sudo apt-get update
          sudo apt-get install -y -qq make cmake gcc g++ lcov bc
      - name: build
        shell: bash
        run: |
          export LD_LIBRARY_PATH=.:$(cat /etc/ld.so.conf.d/* | grep -vF "#" | tr "\\n" ":" | sed -e "s/:$//g")
          cmake . -DCMAKE_BUILD_TYPE=Debug -DENABLE_COVERAGE=On
          make all -j$(nproc)
      - name: coverage
        shell: bash
        run: |
          make coverage
          lines=$(lcov --summary coverage.info | grep -F lines | awk '{print $2}' | sed -e "s/%//g")
          if (( $(echo "${lines} < ${COVERAGE_THRESHOLD}" | bc -l) )); then
              echo "Line coverage dropped below ${COVERAGE_THRESHOLD}% to ${lines}%"
              exit 1
          fi
        env:
          COVERAGE_THRESHOLD: 85.0