rust.yml

name: CI

on:
  pull_request:

env:
  # https://doc.rust-lang.org/cargo/reference/profiles.html#release
  RUSTFLAGS: -Coverflow-checks=y -Cdebug-assertions=y
  # https://doc.rust-lang.org/cargo/reference/profiles.html#incremental
  CARGO_INCREMENTAL: 1
  # https://nexte.st/book/pre-built-binaries.html#using-nextest-in-github-actions
  CARGO_TERM_COLOR: always
  RUST_MIN_STACK: 31457280
  # 30 MB of stack for Keccak tests

jobs:
  run_mdbook:
    name: Building MDBook
    runs-on: ubuntu-latest
    strategy:
      matrix:
        rust_toolchain_version: ["1.72"]
    steps:
      - name: Checkout PR
        uses: actions/checkout@v4.1.1

      - name: Setup Rust toolchain ${{ matrix.rust_toolchain_version }}
        run:
          |
            curl --proto '=https' --tlsv1.2 -sSf -o rustup-init \
            https://static.rust-lang.org/rustup/dist/x86_64-unknown-linux-gnu/rustup-init
            chmod +x ./rustup-init
            ./rustup-init -y --default-toolchain "${{ matrix.rust_toolchain_version }}" --profile default
            rm ./rustup-init
            echo "$HOME/.cargo/bin" >> $GITHUB_PATH
            # overwriting default rust-toolchain
            echo ${{ matrix.rust_toolchain_version }} > rust-toolchain

      - name: Build the mdbook
        run: |
          cd book
          make deps
          make build

  run_formatting:
    name: Formatting
    runs-on: ubuntu-latest
    strategy:
      matrix:
        rust_toolchain_version: ["nightly"]
    steps:
      - name: Checkout PR
        uses: actions/checkout@v4.1.1

      - name: Setup Rust toolchain ${{ matrix.rust_toolchain_version }}
        run:
          |
            curl --proto '=https' --tlsv1.2 -sSf -o rustup-init \
            https://static.rust-lang.org/rustup/dist/x86_64-unknown-linux-gnu/rustup-init
            chmod +x ./rustup-init
            ./rustup-init -y --default-toolchain "${{ matrix.rust_toolchain_version }}" --profile default
            rm ./rustup-init
            echo "$HOME/.cargo/bin" >> $GITHUB_PATH
            # overwriting default rust-toolchain
            echo ${{ matrix.rust_toolchain_version }} > rust-toolchain

      - name: Run cargo fmt
        run: |
          cargo fmt -- --check

  # We run only one of the matrix options on the toffee hetzner-1,
  # and also only in this configuration we enable heavy tests.
  run-checks-setup:
    runs-on: ubuntu-latest
    outputs:
      runners: '{"1.71":"ubuntu-latest", "1.72": "ubuntu-latest", "1.73": "ubuntu-latest", "1.74": "hetzner-1"}'
    steps:
      - run: echo no-op


  run_checks:
    needs: [run-checks-setup]

    strategy:
      matrix:
        # FIXME: use the latest version of cargo nextest when we get rid of 1.71
        # and 1.72
        rust_toolchain_version: ["1.71", "1.72", "1.73", "1.74"]
        # FIXME: currently not available for 5.0.0.
        # It might be related to boxroot dependency, and we would need to bump
        # up the ocaml-rs dependency
        ocaml_version: ["4.14"]

    # See run-checks-setup
    runs-on: ${{ fromJSON(needs.run-checks-setup.outputs.runners)[matrix.rust_toolchain_version] }}

    name: Run some basic checks and tests
    steps:
      - name: Checkout PR
        uses: actions/checkout@v4.1.1

      # as action-rs does not seem to be maintained anymore, building from
      # scratch the environment using rustup
      - name: Setup Rust toolchain ${{ matrix.rust_toolchain_version }}
        run:
          |
            curl --proto '=https' --tlsv1.2 -sSf -o rustup-init \
            https://static.rust-lang.org/rustup/dist/x86_64-unknown-linux-gnu/rustup-init
            chmod +x ./rustup-init
            ./rustup-init -y --default-toolchain "${{ matrix.rust_toolchain_version }}" --profile default
            rm ./rustup-init
            echo "$HOME/.cargo/bin" >> $GITHUB_PATH
            # overwriting default rust-toolchain
            echo ${{ matrix.rust_toolchain_version }} > rust-toolchain

      - name: Setup OCaml ${{ matrix.ocaml_version }}
        uses: ocaml/setup-ocaml@v2
        with:
          ocaml-compiler: ${{ matrix.ocaml_version }}
          # https://github.com/ocaml/setup-ocaml/issues/211#issuecomment-1058882386
          # disable-cache: true

      - name: Install markdownlint
        run: |
          # FIXME: 0.39.0 makes the CI fail
          npm install -g markdownlint-cli@0.38.0

      #
      # Doc & Spec
      #

      - name: Install cargo-spec for specifications
        run: |
          eval $(opam env)
          cargo install --locked cargo-spec

      - name: Build the kimchi specification
        run: |
          cd book/specifications/kimchi
          make build

      - name: Build the polynomial commitment specification
        run: |
          cd book/specifications/poly-commitment
          make build

      - name: Check that up-to-date specification is checked in
        run: |
          git diff --exit-code ":(exclude)rust-toolchain"

      - name: Build cargo docs
        run: |
          eval $(opam env)
          RUSTDOCFLAGS="-D warnings" cargo doc --all-features --no-deps

      #
      # Coding guidelines
      #


      - name: Lint (clippy)
        run: |
          eval $(opam env)
          cargo clippy --all-features --all-targets --tests -- -W clippy::all -D warnings

      #
      # Build
      #

      - name: Ensure that everything builds
        run: |
          eval $(opam env)
          cargo build --release --all-targets --all-features

      #
      # Tests
      #

      # https://nexte.st/book/pre-built-binaries.html#using-nextest-in-github-actions
      - name: Install nextest 0.9.67
        run: |
          eval $(opam env)
          # FIXME: update to 0.9.68 when we get rid of 1.71 and 1.72.
          cargo install cargo-nextest@=0.9.67 --locked

      - name: Run non-heavy tests
        run: |
          eval $(opam env)
          cargo nextest run --all-features --release --profile ci -E "not test(heavy)"

      - name: Run heavy tests
        if: ${{ matrix.rust_toolchain_version == '1.74' }}
        run: |
          eval $(opam env)
          cargo nextest run --all-features --release --profile ci -E "test(heavy)"


      - name: Doc tests
        run: |
          eval $(opam env)
          cargo test --all-features --release --doc