name: CI
on:
  pull_request:
  merge_group:

jobs:
  test:
    name: Test
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        build: [stable, beta, nightly, macos, windows, msrv]
        include:
          - build: stable
            os: ubuntu-latest
            rust: stable
          - build: beta
            os: ubuntu-latest
            rust: beta
          - build: nightly
            os: ubuntu-latest
            rust: nightly
          - build: macos
            os: macos-latest
            rust: stable
          - build: windows
            os: windows-latest
            rust: stable
          - build: msrv
            os: ubuntu-20.04
            # sync MSRV with docs: guide/src/guide/installation.md and Cargo.toml
            rust: 1.66.0
    steps:
    - uses: actions/checkout@v3
    - name: Install Rust
      run: bash ci/install-rust.sh ${{ matrix.rust }}
    - name: Build and run tests
      run: cargo test --locked
    - name: Test no default
      run: cargo test --no-default-features

  rustfmt:
    name: Rustfmt
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v3
    - name: Install Rust
      run: rustup update stable && rustup default stable && rustup component add rustfmt
    - run: cargo fmt --check

  # The success job is here to consolidate the total success/failure state of
  # all other jobs. This job is then included in the GitHub branch protection
  # rule which prevents merges unless all other jobs are passing. This makes
  # it easier to manage the list of jobs via this yml file and to prevent
  # accidentally adding new jobs without also updating the branch protections.
  success:
    name: Success gate
    if: always()
    needs:
      - test
      - rustfmt
    runs-on: ubuntu-latest
    steps:
      - run: jq --exit-status 'all(.result == "success")' <<< '${{ toJson(needs) }}'
      - name: Done
        run: exit 0
