name: Rust

on:
  workflow_dispatch:
  pull_request:
  push:
    # trying and staging branches are for Bors config
    branches:
      - trying
      - staging

env:
  CARGO_TERM_COLOR: always
  RUST_BACKTRACE: 1
  RUSTFLAGS: "-D warnings"

jobs:
  tests:
    name: Tests on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-18.04, macos-latest, windows-latest]
    steps:
    - uses: actions/checkout@v2
    - name: Cache dependencies
      uses: Swatinem/rust-cache@v1.3.0
    - name: Run cargo check without any default features
      uses: actions-rs/cargo@v1
      with:
        command: build
        args: --locked --release --no-default-features
    - name: Run cargo test
      uses: actions-rs/cargo@v1
      with:
        command: test
        args: --locked --release

  # We run tests in debug also, to make sure that the debug_assertions are hit
  test-debug:
    name: Run tests in debug
    runs-on: ubuntu-18.04
    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          override: true
      - name: Cache dependencies
        uses: Swatinem/rust-cache@v1.3.0
      - name: Run tests in debug
        uses: actions-rs/cargo@v1
        with:
          command: test
          args: --locked

  clippy:
    name: Run Clippy
    runs-on: ubuntu-18.04
    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          override: true
          components: clippy
      - name: Cache dependencies
        uses: Swatinem/rust-cache@v1.3.0
      - name: Run cargo clippy
        uses: actions-rs/cargo@v1
        with:
          command: clippy
          args: --all-targets -- --deny warnings

  fmt:
    name: Run Rustfmt
    runs-on: ubuntu-18.04
    steps:
      - uses: actions/checkout@v2
      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: nightly
          override: true
          components: rustfmt
      - name: Cache dependencies
        uses: Swatinem/rust-cache@v1.3.0
      - name: Run cargo fmt
        run: cargo fmt --all -- --check