CI.yml

name: CI

on:
  push:
    branches:
      - main
    tags:
      - 'v*.*.*'
  pull_request:
    types: [ opened, synchronize, reopened ]
    branches:
      - main
env:
  CARGO_TERM_COLOR: always

jobs:
  test:
    name: test ${{ matrix.rust }} ${{ matrix.flags }}
    runs-on: ubuntu-latest
    timeout-minutes: 30
    strategy:
      fail-fast: false
      matrix:
        rust: [ "stable", "beta", "nightly", "1.65" ] # MSRV
        flags: [ "--no-default-features", "", "--all-features" ]
        exclude:
          # Skip because some features have highest MSRV.
          - rust: "1.65" # MSRV
            flags: "--all-features"
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.rust }}
      - uses: Swatinem/rust-cache@v2
        with:
          cache-on-failure: true
      # Only run tests on the latest stable and above
      - name: check
        if: ${{ matrix.rust == '1.65' }} # MSRV
        run: cargo check --workspace ${{ matrix.flags }}
      - name: test
        if: ${{ matrix.rust != '1.65' }} # MSRV
        run: cargo test --workspace ${{ matrix.flags }}

  coverage:
    name: Code Coverage
    runs-on: ubuntu-latest
    env:
      LLVMCOV_VERSION: 0.5.14
    steps:
      - name: Checkout repository
        uses: actions/checkout@v3

      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          toolchain: stable
          override: true
          profile: minimal
          components: clippy, rustfmt

      - name: Cache rust dependencies
        uses: Swatinem/rust-cache@v2
        with:
          shared-key: rust-cache-hyper-server-coverage-${{ runner.os }}-${{ hashFiles('**/Cargo.lock') }}-${{ env.LLVMCOV_VERSION }}

      - name: Install cargo-llvm-cov
        run: cargo install cargo-llvm-cov --version=${{ env.LLVMCOV_VERSION }} --locked

      - name: Generate code coverage
        run: cargo llvm-cov --all-features --workspace --lcov --output-path lcov.info

      - name: Upload coverage to Codecov
        uses: codecov/codecov-action@v3
        with:
          token: ${{ secrets.CODECOV_TOKEN }} # not required for public repos
          files: lcov.info
          fail_ci_if_error: false

# TODO(Miri presently has errors/detects undefined behavior in the codebase)
# We should fix this and then enable.
#  miri:
#    name: miri ${{ matrix.flags }}
#    runs-on: ubuntu-latest
#    timeout-minutes: 30
#    strategy:
#      fail-fast: false
#      matrix:
#        flags: [ "--no-default-features", "", "--all-features" ]
#    env:
#      MIRIFLAGS: -Zmiri-strict-provenance
#    steps:
#      - uses: actions/checkout@v3
#      - uses: dtolnay/rust-toolchain@miri
#      - uses: Swatinem/rust-cache@v2
#        with:
#          cache-on-failure: true
#      - run: cargo miri setup ${{ matrix.flags }}
#      - run: cargo miri test ${{ matrix.flags }}

  feature-checks:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@stable
      - uses: taiki-e/install-action@cargo-hack
      - uses: Swatinem/rust-cache@v2
        with:
          cache-on-failure: true
      - name: cargo hack
        run: cargo hack check --feature-powerset --depth 2

  clippy:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@clippy
      - uses: Swatinem/rust-cache@v2
        with:
          cache-on-failure: true
      - run: cargo clippy --workspace --all-targets --all-features
        env:
          RUSTFLAGS: -Dwarnings

  docs:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@nightly
      - uses: Swatinem/rust-cache@v2
        with:
          cache-on-failure: true
      - run: cargo doc --workspace --all-features --no-deps --document-private-items
        env:
          RUSTDOCFLAGS: "--cfg docsrs -D warnings"

  fmt:
    runs-on: ubuntu-latest
    timeout-minutes: 30
    steps:
      - uses: actions/checkout@v3
      - uses: dtolnay/rust-toolchain@nightly
        with:
          components: rustfmt
      - run: cargo fmt --all --check