ci.yml

name: ci

on:
  pull_request:
  push:
    branches:
      - master
  schedule:
    - cron: '00 00 * * *'

defaults:
  run:
    shell: bash

env:
  # Coloured output from Cargo.
  CARGO_TERM_COLOR: always
  # Emit backtraces on panics.
  RUST_BACKTRACE: 1

jobs:
  test:
    name: ${{ format('test ({0})', matrix.name || matrix.rust) }}
    runs-on: ${{ format('{0}-latest', matrix.os || 'ubuntu') }}
    env:
      # We use cross to test on 32-bit and big-endian systems.
      CARGO: cargo
      # When CARGO is set to `cross`, TARGET is set to `--target matrix.target`.
      TARGET: ''
    strategy:
      matrix:
        rust:
          - 1.53.0
          - stable
          - beta
          - nightly
        include:
          - rust: nightly
            name: macos
            os: macos
          - rust: nightly-x86_64-msvc
            name: windows-msvc
            os: windows
          - rust: nightly-x86_64-gnu
            name: windows-gnu
            os: windows
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Install Rust
        uses: actions-rs/toolchain@v1
        with:
          toolchain: ${{ matrix.rust }}
          override: true
          profile: minimal

      - name: Use Cross
        if: ${{ matrix.target != '' }}
        run: |
          cargo install cross
          echo "CARGO=cross" >> $GITHUB_ENV
          echo "TARGET=--target ${{ matrix.target }}" >> $GITHUB_ENV

      - name: Show command used for Cargo
        run: |
          echo "cargo command: ${{ env.CARGO }}"
          echo "target flag: ${{ env.TARGET }}"

      - name: Build
        run: ${{ env.CARGO }} build --verbose --workspace ${{ env.TARGET }}

      - name: Build (unstable)
        if: ${{ startsWith(matrix.rust, 'nightly') }}
        run: ${{ env.CARGO }} build --verbose --workspace --features unstable ${{ env.TARGET }}

      - name: Run tests
        run: ${{ env.CARGO }} test --verbose --workspace ${{ env.TARGET }}

      - name: Run tests (unstable)
        if: ${{ startsWith(matrix.rust, 'nightly') }}
        run: ${{ env.CARGO }} test --verbose --workspace --features unstable ${{ env.TARGET }}

  rustfmt:
    name: rustfmt
    runs-on: ubuntu-latest
    steps:
      - name: Checkout repository
        uses: actions/checkout@v2

      - name: Install Rust
        uses: actions-rs/toolchain@v1
        with:
          toolchain: nightly
          override: true
          profile: minimal
          components: rustfmt

      - name: Check formatting
        run: cargo fmt --all -- --check

  # Collect jobs required for CI success.
  success:
    name: ci pass
    if: ${{ success() }}
    runs-on: ubuntu-latest
    needs:
      - test
      - rustfmt
    steps:
      - name: Mark the job as successful
        run: exit 0