name: Tests

on:
  push:
    branches:
      - main
  pull_request:
    types: [opened, reopened, synchronize]

jobs:
  test:
    strategy:
      matrix:
        rust:
          # MSRV; most not be higher than the clippy rust version in checks.yml
          - "1.47"
          - "stable"
        os:
          - ubuntu-latest
          - macOS-latest
          - windows-latest

    name: "Test - Rust ${{ matrix.rust }} on ${{ matrix.os }}"
    runs-on: ${{ matrix.os }}

    steps:
      - uses: actions/checkout@v1

      - name: Cache cargo registry
        uses: actions/cache@v2
        with:
          path: ~/.cargo/registry
          key: ${{ runner.os }}-${{ matrix.rust }}-cargo-registry-${{ hashFiles('**/Cargo.lock') }}

      - name: Cache cargo build
        uses: actions/cache@v2
        with:
          path: target
          key: ${{ runner.os }}-${{ matrix.rust }}-cargo-build-target-${{ hashFiles('**/Cargo.lock') }}

      - uses: actions-rs/toolchain@v1
        with:
          toolchain: "${{ matrix.rust }}"
          override: true

      - name: test
        run: cargo test