check.yml

name: CI
on:
  push:
    branches: ["main"]
    paths-ignore: ["*.md", "*.png", "*.svg", "LICENSE-*"]
  pull_request:
    branches: ["main"]
    paths-ignore: ["*.md", "*.png", "*.svg", "LICENSE-*"]
  merge_group:
env:
  CARGO_TERM_COLOR: always
  RUST_BACKTRACE: 1

concurrency:
  group: ${{ github.workflow }}-${{ github.ref_name }}
  cancel-in-progress: true

permissions:
  contents: read

jobs:
  check:
    name: Build & test
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macos-14, windows-latest]
        # Don't increase beyond what Firefox is currently using:
        # https://searchfox.org/mozilla-central/search?q=MINIMUM_RUST_VERSION&path=python/mozboot/mozboot/util.py
        # Keep in sync with Cargo.toml
        rust-toolchain: [1.76.0, stable, nightly]
        type: [debug]
        include:
          - os: ubuntu-latest
            rust-toolchain: stable
            type: release
    env:
      BUILD_TYPE: ${{ matrix.type == 'release' && '--release' || '' }}
    runs-on: ${{ matrix.os }}
    defaults:
      run:
        shell: bash

    steps:
      - name: Checkout
        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7

      - name: Install Rust
        uses: ./.github/actions/rust
        with:
          version: ${{ matrix.rust-toolchain }}
          components: rustfmt, clippy, llvm-tools-preview
          tools: cargo-llvm-cov, cargo-nextest, cargo-hack, cargo-fuzz, cargo-machete

      - name: Get minimum NSS version
        id: nss-version
        run: echo "minimum=$(cat neqo-crypto/min_version.txt)" >> "$GITHUB_OUTPUT"

      - name: Install NSS
        uses: ./.github/actions/nss
        with:
          minimum-version: ${{ steps.nss-version.outputs.minimum }}

      - name: Build
        run: |
          # shellcheck disable=SC2086
          cargo +${{ matrix.rust-toolchain }} build $BUILD_TYPE --all-targets --features ci

      - name: Run tests and determine coverage
        run: |
          # shellcheck disable=SC2086
          RUST_LOG=trace cargo +${{ matrix.rust-toolchain }} llvm-cov nextest $BUILD_TYPE --features ci --no-fail-fast --lcov --output-path lcov.info
          cargo +${{ matrix.rust-toolchain }} bench --features bench --no-run

      - name: Run client/server transfer
        run: |
          # shellcheck disable=SC2086
          cargo +${{ matrix.rust-toolchain }} build $BUILD_TYPE --bin neqo-client --bin neqo-server
          "target/$BUILD_DIR/neqo-server" "$HOST:4433" &
          PID=$!
          # Give the server time to start.
          sleep 1
          "target/$BUILD_DIR/neqo-client" --output-dir . "https://$HOST:4433/$SIZE"
          kill $PID
          [ "$(wc -c <"$SIZE")" -eq "$SIZE" ] || exit 1
        env:
          HOST: localhost
          SIZE: 54321
          RUST_LOG: warn
          BUILD_DIR: ${{ matrix.type == 'release' && 'release' || 'debug' }}

      - name: Check formatting
        run: |
          if [ "${{ matrix.rust-toolchain }}" != "nightly" ]; then
            CONFIG_PATH="--config-path=$(mktemp)"
          fi
          # shellcheck disable=SC2086
          cargo +${{ matrix.rust-toolchain }} fmt --all -- --check $CONFIG_PATH
        if: success() || failure()

      - name: Check for unused dependencies
        run: |
          #  --with-metadata has false positives, see https://github.com/bnjbvr/cargo-machete/issues/127
          cargo +${{ matrix.rust-toolchain }} machete

      - name: Clippy
        run: |
          # Use cargo-hack to run clippy on each crate individually with its
          # respective default features only. Can reveal warnings otherwise
          # hidden given that a plain cargo clippy combines all features of the
          # workspace. See e.g. https://github.com/mozilla/neqo/pull/1695.
          cargo +${{ matrix.rust-toolchain }} hack clippy --all-targets --feature-powerset --exclude-features gecko -- -D warnings || ${{ matrix.rust-toolchain == 'nightly' }}
          # Check that the fuzz targets also build
          if [ ${{ matrix.rust-toolchain }} == 'nightly' ]; then
            cargo +${{ matrix.rust-toolchain }} fuzz check
          fi
        if: success() || failure()

      - name: Check rustdoc links
        run: cargo +${{ matrix.rust-toolchain }} doc --workspace --no-deps --document-private-items
        env:
          RUSTDOCFLAGS: "--deny rustdoc::broken_intra_doc_links --deny warnings"
        if: success() || failure()

      - name: Upload coverage reports to Codecov
        uses: codecov/codecov-action@e28ff129e5465c2c0dcc6f003fc735cb6ae0c673 # v4.5.0
        with:
          file: lcov.info
          fail_ci_if_error: false
          token: ${{ secrets.CODECOV_TOKEN }}
          verbose: true
        env:
          CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
        if: matrix.type == 'debug' && matrix.rust-toolchain == 'stable'

  bench:
    name: "Benchmark"
    needs: [check]
    uses: ./.github/workflows/bench.yml