coverage.yml

name: coverage

on: [push]
jobs:
  test:
    name: coverage
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v7

      - name: Cache cargo
        uses: actions/cache@v6
        with:
          path: ~/.cargo
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: ${{ runner.os }}-cargo

      - name: Cache cargo build
        uses: actions/cache@v6
        with:
          path: target
          key: ${{ runner.os }}-stable-coverage-build-target-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: ${{ runner.os }}-stable-coverage-build-target-

      - name: Install cargo-llvm-cov
        uses: taiki-e/install-action@cargo-llvm-cov

      - name: Generate code coverage
        run: cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info

      - name: Upload to codecov.io
        uses: codecov/codecov-action@v7
        with:
          files: lcov.info
          # This fork has no CODECOV_TOKEN (secrets are not inherited from the
          # upstream repo), so every upload is rejected with "Token required -
          # not valid tokenless upload". Failing CI on that made `coverage` red
          # on all 24 runs since the workflow started reporting, which buries
          # real regressions instead of surfacing them. Upload errors are now
          # non-fatal; the error text is still printed in this step's log.
          # The coverage run itself is the separate "Generate code coverage"
          # step above, which still fails the job if the build or tests break.
          # Set CODECOV_TOKEN on this fork to make uploads work again.
          fail_ci_if_error: false
          token: ${{ secrets.CODECOV_TOKEN }}