name: CI
on:
  pull_request:
  push:
    branches:
      - master
env:
  RUST_BACKTRACE: 1

jobs:
  style:
    name: Check Style
    runs-on: ubuntu-latest
    steps:
      - name: Checkout
        uses: actions/checkout@v1

      - name: Install Rust
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: stable
          override: true
          components: rustfmt

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

  test:
    name: Test
    needs: [style]
    runs-on: ubuntu-latest
    env:
      RUSTFLAGS: -Dwarnings
    strategy:
      matrix:
        rust:
          - nightly
          - beta
          - stable
    steps:
      - name: Checkout
        uses: actions/checkout@v1

      - name: Install Rust (${{ matrix.rust }})
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: ${{ matrix.rust }}
          override: true

      - name: Install libssl-dev
        run: sudo apt-get update && sudo apt-get install libssl-dev
      - name: Build without unstable flag
        uses: actions-rs/cargo@v1
        with:
          command: build

      - name: Check with unstable flag
        uses: actions-rs/cargo@v1
        with:
          command: check
          args: --features unstable

      - name: Run lib tests and doc tests
        uses: actions-rs/cargo@v1
        with:
          command: test

      - name: Run integration tests
        uses: actions-rs/cargo@v1
        with:
          command: test
          args: -p h2-tests

      - name: Run h2spec
        run: ./ci/h2spec.sh
        if: matrix.rust == 'stable'

      - name: Check minimal versions
        run: cargo clean; cargo update -Zminimal-versions; cargo check
        if: matrix.rust == 'nightly'

  msrv:
    name: Check MSRV (${{ matrix.rust }})
    needs: [style]
    strategy:
      matrix:
        rust:
          - 1.56 # never go past Hyper's own MSRV

        os:
          - ubuntu-latest

    runs-on: ${{ matrix.os }}

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

      - name: Install Rust (${{ matrix.rust }})
        uses: actions-rs/toolchain@v1
        with:
          profile: minimal
          toolchain: ${{ matrix.rust }}
          override: true

      - name: Check
        uses: actions-rs/cargo@v1
        with:
          command: check