la-stack 0.4.2

Fast, stack-allocated linear algebra for fixed dimensions
Documentation 
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name: Codecov
concurrency:
  # Ensure only one Codecov analysis runs per branch/ref
  group: codecov-${{ github.ref_name }}
  cancel-in-progress: true

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

# Least-privilege permissions
permissions:
  contents: read
  checks: write
  pull-requests: write

jobs:
  coverage:
    name: Code Coverage
    runs-on: ubuntu-latest
    env:
      CARGO_LLVM_COV_VERSION: "0.8.7"
      JUST_VERSION: "1.51.0"
    steps:
      - name: Checkout repository
        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd # v6.0.2
        with:
          fetch-depth: 0 # Needed for Codecov diff analysis
          persist-credentials: false

      - name: Install Rust toolchain
        uses: actions-rust-lang/setup-rust-toolchain@46268bd060767258de96ed93c1251119784f2ab6 # v1.16.1
        with:
          cache: true # toolchain/components are specified in rust-toolchain.toml

      - name: Install LLVM coverage tools
        run: rustup component add llvm-tools-preview

      - name: Install cargo-llvm-cov
        uses: taiki-e/cache-cargo-install-action@417450f3c33ee20393705369577571770643d4c7 # v3.0.7
        with:
          tool: cargo-llvm-cov@${{ env.CARGO_LLVM_COV_VERSION }}

      - name: Install just
        uses: taiki-e/cache-cargo-install-action@417450f3c33ee20393705369577571770643d4c7 # v3.0.7
        with:
          tool: just@${{ env.JUST_VERSION }}

      - name: Run coverage
        run: |
          mkdir -p coverage
          chmod 755 coverage

          echo "::group::Running coverage"
          # Single source of truth: coverage configuration lives in justfile
          just coverage-ci
          echo "::endgroup::"

          echo "::group::Coverage verification"
          ls -la coverage/ || true

          if [ ! -f coverage/cobertura.xml ]; then
            echo "::error::coverage/cobertura.xml not found. cargo-llvm-cov failed to generate XML output."
            exit 2
          fi
          echo "::notice::Coverage report generated successfully: $(wc -l < coverage/cobertura.xml) lines"
          echo "::endgroup::"
        env:
          RUST_BACKTRACE: 1

      - name: Upload coverage to Codecov
        if: ${{ success() && hashFiles('coverage/cobertura.xml') != '' }}
        uses: codecov/codecov-action@e79a6962e0d4c0c17b229090214935d2e33f8354 # v6.0.1
        with:
          files: coverage/cobertura.xml
          flags: unittests
          name: codecov-umbrella
          fail_ci_if_error: false
        env:
          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}

      - name: Archive coverage results
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        if: always()
        with:
          name: coverage-report
          path: coverage/