name: Rust

on: [push, pull_request]

jobs:
  lint:
    name: Linting and Formatting Checks
    runs-on: ubuntu-latest
    steps:
      - name: Checkout sources
        uses: actions/checkout@v1

      - name: Install stable toolchain
        uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          override: true

      - name: Install rustfmt
        run: rustup component add rustfmt

      - name: Cache cargo registry
        uses: actions/cache@v1
        with:
          path: ~/.cargo/registry
          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}

      - name: Cache cargo index
        uses: actions/cache@v1
        with:
          path: ~/.cargo/git
          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}

      - name: Cache cargo build
        uses: actions/cache@v1
        with:
          path: target
          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}

      - name: Check Formatting
        uses: actions-rs/cargo@v1
        with:
          command: fmt
          args: --all -- --check

      - name: Install clippy
        run: rustup component add clippy

      - name: Clippy Linting
        uses: actions-rs/cargo@v1
        with:
          command: clippy
          args: -- -D warnings

  test:
    name: Run Tests
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        # add windows-latest when it is clear why tests are failing
        os: [ubuntu-latest, macos-latest]

    steps:
      - name: Checkout sources
        uses: actions/checkout@v1

      - name: Install stable toolchain
        uses: actions-rs/toolchain@v1
        with:
          toolchain: stable
          override: true

      - name: Cache cargo registry
        uses: actions/cache@v1
        with:
          path: ~/.cargo/registry
          key: ${{ runner.os }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}

      - name: Cache cargo index
        uses: actions/cache@v1
        with:
          path: ~/.cargo/git
          key: ${{ runner.os }}-cargo-index-${{ hashFiles('**/Cargo.lock') }}

      - name: Cache cargo build
        uses: actions/cache@v1
        with:
          path: target
          key: ${{ runner.os }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}

      - name: Run Tests
        uses: actions-rs/cargo@v1
        with:
          command: test