ci.yml

name: CI

on:
  push:
    # Avoid duplicate builds on PRs.
    branches:
      - main
  pull_request:

permissions:
  contents: read

env:
  CARGO_TERM_COLOR: always

jobs:
  lint:
    runs-on: ubuntu-24.04
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Update Rust toolchain
        run: rustup update
      - name: Rust Cache
        uses: Swatinem/rust-cache@v2.7.7
      - name: Clippy
        run: cargo clippy --all-targets --locked -- --deny warnings
      - name: rustfmt
        run: cargo fmt -- --check

  unit-test:
    runs-on: ubuntu-24.04
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Update Rust toolchain
        run: rustup update
      - name: Rust Cache
        uses: Swatinem/rust-cache@v2.7.7
      - name: Run unit tests
        run: cargo test --locked

  integration-test:
    runs-on: ubuntu-24.04
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Install musl-tools
        run: sudo apt-get install musl-tools --no-install-recommends
      - name: Update Rust toolchain
        run: rustup update
      - name: Install Rust linux-musl target
        run: rustup target add x86_64-unknown-linux-musl
      - name: Rust Cache
        uses: Swatinem/rust-cache@v2.7.7
      - name: Install Pack CLI
        uses: buildpacks/github-actions/setup-pack@v5.8.8
      - name: Run integration tests
        # Runs only tests annotated with the `ignore` attribute (which in this repo, are the integration tests).
        run: cargo test --locked -- --ignored

  print-pack-getting-started-output:
    runs-on: ${{ matrix.target == 'aarch64-unknown-linux-musl' && 'pub-hk-ubuntu-24.04-arm-medium' || 'ubuntu-24.04' }}
    strategy:
      matrix:
        target: ["aarch64-unknown-linux-musl", "x86_64-unknown-linux-musl"]
      fail-fast: false
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Install musl-tools
        run: sudo apt-get install -y --no-install-recommends musl-tools
      - name: Update Rust toolchain
        run: rustup update
      - name: Install Rust linux-musl target
        run: rustup target add ${{ matrix.target }}
      - name: Rust Cache
        uses: Swatinem/rust-cache@v2.7.7
      - name: Install Pack CLI
        uses: buildpacks/github-actions/setup-pack@v5.8.8
      - name: Pull builder and run images
        run: |
          docker pull "heroku/builder:24"
          docker pull "heroku/heroku:24"
      - name: Clone ruby getting started guide
        uses: actions/checkout@v4
        with:
          repository: heroku/ruby-getting-started
          path: tmp/ruby-getting-started
      - name: Install libcnb-cargo for `cargo libcnb package` command
        run: cargo install libcnb-cargo
      - name: Compile ruby buildpack
        run: cargo libcnb package --target ${{ matrix.target }}
      - name: "PRINT: Getting started guide output"
        run: pack build my-image --force-color --builder heroku/builder:24 --trust-extra-buildpacks --buildpack heroku/nodejs-engine --buildpack packaged/${{ matrix.target }}/debug/heroku_ruby --path tmp/ruby-getting-started --pull-policy never
      - name: "PRINT: Cached getting started guide output"
        run: pack build my-image --force-color --builder heroku/builder:24 --trust-extra-buildpacks --buildpack heroku/nodejs-engine --buildpack packaged/${{ matrix.target }}/debug/heroku_ruby --path tmp/ruby-getting-started --pull-policy never