on:
  push:
    branches:
      - master
  pull_request:
    branches:
      - master

name: tests

jobs:
  ci:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        rust:
          - stable
          - beta
          - nightly
          - 1.46.0  # MSRV

    steps:
      - uses: actions/checkout@v2

      - uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: ${{ matrix.rust }}
          override: true
          components: rustfmt, clippy

      - uses: Swatinem/rust-cache@v1

      - uses: actions-rs/cargo@v1
        with:
          command: build
          args: --features stable

      - uses: actions-rs/cargo@v1
        with:
          command: test
          args: --features stable

      - uses: actions-rs/cargo@v1
        if: ${{ matrix.rust == 'stable' }}
        with:
          command: fmt
          args: --all -- --check

      - uses: actions-rs/cargo@v1
        if: ${{ matrix.rust != '1.40.0' }} # 1.40 has horrible lints.
        with:
          command: clippy
          args: -- -D warnings