ci.yml

name: CI

on:
  push:
    branches:
      - main
  pull_request:

permissions:
  contents: read

env:
  CARGO_TERM_COLOR: always

jobs:
  lint:
    name: Rust Code Linting
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          submodules: true
      - name: Update Rust toolchain
        run: rustup update
      - name: Rust Cache
        uses: Swatinem/rust-cache@v2
      - name: Clippy
        run: cargo clippy --all-targets --locked -- --deny warnings
      - name: rustfmt
        run: cargo fmt -- --check

  unit-test:
    name: Unit Tests
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          submodules: true
      - name: Update Rust toolchain
        run: rustup update
      - name: Rust Cache
        uses: Swatinem/rust-cache@v2
      - name: Run unit tests
        run: cargo test --locked

  integration-test:
    name: Integration Tests (${{ matrix.buildpack-directory }})
    runs-on: pub-hk-ubuntu-22.04-large
    needs: gather-repo-metadata
    strategy:
      fail-fast: false
      matrix:
        buildpack-directory: ${{ fromJson(needs.gather-repo-metadata.outputs.buildpack_dirs) }}
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          submodules: true
      - 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
      - name: Install Pack CLI
        uses: buildpacks/github-actions/setup-pack@v5.4.0
      - name: Run integration tests
        working-directory: ${{ matrix.buildpack-directory }}
        # Runs only tests annotated with the `ignore` attribute (which in this repo, are the integration tests).
        run: cargo test --locked -- --ignored --test-threads 16

  gather-repo-metadata:
    name: "Gather Repository Metadata"
    runs-on: ubuntu-22.04
    outputs:
      buildpack_dirs: ${{ steps.find-buildpack-dirs.outputs.buildpack_dirs }}
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          submodules: true
      - id: find-buildpack-dirs
        name: Find buildpack directories
        run: echo "buildpack_dirs=$(find . -type f -name 'buildpack.toml' -exec dirname {} \; | grep -v './meta-buildpacks' | sort | uniq | jq -nRc '[inputs]')" >> $GITHUB_OUTPUT