name: Rust

on:
  push:
    branches: [ staging, trying ]
  pull_request:
    branches: [ main ]

env:
  CARGO_TERM_COLOR: always

jobs:
  tests:
    name: Tests on ${{ matrix.os }} with ${{ matrix.rust }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-18.04, macos-latest, windows-latest]
        rust:
          - stable
          - beta
          - nightly
    steps:
    - uses: actions/checkout@v2
    - name: Cache dependencies
      uses: actions/cache@v2
      with:
        path: |
          ~/.cargo
          ./Cargo.lock
          ./target
        key: ${{ matrix.os }}-${{ matrix.rust }}-${{ hashFiles('Cargo.toml') }}
    - uses: actions-rs/toolchain@v1
      with:
        profile: minimal
        toolchain: ${{ matrix.rust }}
        override: true
    - name: Run cargo check
      uses: actions-rs/cargo@v1
      with:
        command: check
        args: --all
    - name: Run cargo test
      uses: actions-rs/cargo@v1
      with:
        command: test
        args: --release

  fmt:
    name: Run Rustfmt
    runs-on: ubuntu-18.04
    steps:
      - uses: actions/checkout@v2
      - name: Cache dependencies
        uses: actions/cache@v2
        with:
          path: |
            ~/.cargo
            ./Cargo.lock
            ./target
          key: ${{ matrix.os }}-${{ matrix.rust}}-${{ hashFiles('Cargo.toml') }}
      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: nightly
          override: true
          components: rustfmt
      - name: Run cargo fmt
        # Since we never ran the `build.rs` script in the benchmark directory we are missing one auto-generated import file.
        # Since we want to trigger (and fail) this action as fast as possible, instead of building the benchmark crate
        # we are going to create an empty file where rustfmt expects it.
        run: |
          echo -ne "\n" > benchmarks/benches/datasets_paths.rs
          cargo fmt --all -- --check