coverage.yml

on:
  push:
    branches: [main, auto, canary]
  pull_request:
    branches:
      - main

name: Test coverage

permissions:
  contents: read

concurrency:
  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
  cancel-in-progress: true

jobs:
  coverage:
    name: Collect test coverage
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os:
          - ubuntu-latest
          - windows-latest
    # nightly rust might break from time to time
    continue-on-error: true
    env:
      RUSTFLAGS: -D warnings
      CARGO_TERM_COLOR: always
    steps:
      - name: Set temp directory on Windows
        if: ${{ runner.os == 'Windows' }}
        run: |
          mkdir -p "D:\a\_temp"
          echo "TEMP=D:\a\_temp" >> $GITHUB_ENV
          echo "TMP=D:\a\_temp" >> $GITHUB_ENV
        shell: bash
      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          persist-credentials: false
        # Nightly Rust is used for cargo llvm-cov --doc below.
      - uses: dtolnay/rust-toolchain@nightly
        with:
          components: llvm-tools-preview
      - uses: Swatinem/rust-cache@c19371144df3bb44fab255c43d04cbc2ab54d1c4 # v2.9.1

      - name: Install latest nextest release
        uses: taiki-e/install-action@c12d62a803cbdfe2e7263af15f5a9548065cb4f2 # v2.69.3
        with:
          tool: nextest
      - name: Install cargo-llvm-cov
        uses: taiki-e/install-action@c12d62a803cbdfe2e7263af15f5a9548065cb4f2 # v2.69.3
        with:
          tool: cargo-llvm-cov

      - name: Collect coverage data
        # Generate separate reports for nextest and doctests, and combine them.
        run: |
          cargo llvm-cov --no-report nextest
          cargo llvm-cov --no-report --doc
          cargo llvm-cov report --doctests --lcov --output-path lcov.info
      - name: Upload coverage data to codecov
        uses: codecov/codecov-action@1af58845a975a7985b0beb0cbe6fbbb71a41dbad # v5.5.3
        env:
          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }} # zizmor: ignore[secrets-outside-env]
        with:
          files: lcov.info