.github/workflows/ci.yml

on:
  pull_request:
    branches: [ '*' ]
  merge_group:
    types: [ checks_requested ]
  workflow_dispatch: { }

name: Continuous integration

jobs:
  tests:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        crate: [petgraph, petgraph-core, petgraph-serialization-tests]
        rust: [stable, beta, nightly]
        include:
          - rust: nightly
            bench: true
            
    name: Tests ${{ matrix.crate }} (Rust ${{ matrix.rust }})

    steps:
      - name: Checkout code
        uses: actions/checkout@v5
      # Remove repo toolchain pin so we can specify toolchain manually
      - name: Remove toolchain pin
        run: rm -f rust-toolchain.toml rustup-toolchain.toml
      - name: Install Rust ${{ matrix.rust }}
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.rust }}
      - name: Install cargo-nextest
        uses: taiki-e/install-action@v2
        with:
          tool: cargo-nextest

      - name: Build caching
        uses: Swatinem/rust-cache@v2

      - name: Build and test
        run: |
          # Run tests with default and all features. Powerset of features is only tested on merge
          # or with the S-run-thorough-ci-tests label to save CI resources.
          cargo nextest run --package ${{ matrix.crate }} --verbose
          cargo nextest run --package ${{ matrix.crate }} --all-features --verbose

      - name: Build benchmarks
        if: ${{ matrix.bench }}
        run: |
          cargo bench --verbose --no-run
          cargo bench --verbose --no-run --all-features

  lints:
    name: Lints
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v5
      - name: Setup just
        uses: extractions/setup-just@v3
      - name: Install nightly toolchain
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: nightly
          components: rustfmt, clippy

      - name: Build caching
        uses: Swatinem/rust-cache@v2

      - name: Check formatting
        run: just fmt

      - name: Run clippy
        # The benchmarks target require nightly,
        # so we cannot use --all-targets here.
        run: just clippy

      - name: Build docs
        run: cargo doc --no-deps --all-features
        env:
          RUSTDOCFLAGS: "-Dwarnings"

  check-no-std:
    name: Check no_std
    runs-on: ubuntu-latest
    steps:
      - name: Checkout code
        uses: actions/checkout@v5
      # Remove repo toolchain pin so we can specify toolchain manually
      - name: Remove toolchain pin
        run: rm -f rust-toolchain.toml rustup-toolchain.toml
      - name: Setup just
        uses: extractions/setup-just@v3
      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt, clippy
          targets: wasm32v1-none
      - name: Install cargo-nextest
        uses: taiki-e/install-action@v2
        with:
          tool: cargo-nextest

      - name: Build caching
        uses: Swatinem/rust-cache@v2

      - name: Check
        run: just check-no-std