name: Rust

on:
  push: {}
  pull_request: {}

env:
  RUST_BACKTRACE: 1

jobs:
  test:
    name: Test Rust ${{ matrix.rust }} on ${{ matrix.os }}
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        # it's a little tempting to use `matrix` to do a cartesian product with
        # our `--feature` config here, but doing so will be very slow, as the
        # free tier only supports up to 20 job runners at a time.
        include:
        # versions (all on linux-x86_64)
        - { rust: 1.34.0, os: ubuntu-latest }
        - { rust: stable, os: ubuntu-latest }
        - { rust: beta, os: ubuntu-latest }
        - { rust: nightly, os: ubuntu-latest }
        # non-linux platforms (ones which don't require `cross`)
        - { rust: stable, os: macos-latest }
        - { rust: stable, os: windows-latest }
        - { rust: stable-x86_64-gnu, os: windows-latest }
        - { rust: stable-i686-msvc, os: windows-latest }
        - { rust: stable-i686-gnu, os: windows-latest }
    steps:
    - uses: hecrj/setup-rust-action@v1
      with:
        rust-version: ${{ matrix.rust }}
    - uses: actions/checkout@v3
    - run: cargo test --verbose
    - run: cargo test --verbose --no-default-features
    - run: cargo test --verbose
    - run: cargo test --verbose --all-features
      if: matrix.rust == 'nightly'
    - run: cargo test --verbose --manifest-path=derive/Cargo.toml --all-features
      if: matrix.rust == 'nightly'

  cross-test:
    name: Test on ${{ matrix.target }} with cross
    runs-on: ubuntu-latest
    strategy:
      matrix:
        # we once had mips runners for Big-endian coverage but those got demoted to tier 3.
        target: [i686-unknown-linux-gnu]
    steps:
    - uses: hecrj/setup-rust-action@v1
      with:
        rust-version: nightly
    - uses: actions/checkout@v3
    - run: cargo install cross
    - run: cross test --verbose --target=${{ matrix.target }} --no-default-features
    - run: cross test --verbose --target=${{ matrix.target }}
    - run: cross test --verbose --target=${{ matrix.target }} --all-features
      if: matrix.rust == 'nightly'
    - run: cross test --verbose --target=${{ matrix.target }} --manifest-path=derive/Cargo.toml --all-features
      if: matrix.rust == 'nightly'

  miri-test:
    name: Test with miri
    runs-on: ubuntu-latest
    steps:
    - uses: hecrj/setup-rust-action@v1
      with:
        rust-version: nightly
        components: miri
    - uses: actions/checkout@v3
    # Note(Lokathor): We got some cached json errors, and so we cargo clean for this run.
    - run: rm -fr target
    - run: cargo miri test --verbose --no-default-features
    - run: cargo miri test --verbose --all-features
    - run: cd derive && rm -fr target && cargo miri test --verbose --all-features

  sanitizer-test:
    name: Test with -Zsanitizer=${{ matrix.sanitizer }}
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        sanitizer: [address, memory, leak]
    steps:
    - uses: actions/checkout@v3
    - uses: hecrj/setup-rust-action@v1
      with:
        rust-version: nightly
        components: rust-src
    - name: Test with sanitizer
      env:
        RUSTFLAGS: -Zsanitizer=${{ matrix.sanitizer }}
        RUSTDOCFLAGS: -Zsanitizer=${{ matrix.sanitizer }}
        ASAN_OPTIONS: detect_stack_use_after_return=1
        # Asan's leak detection occasionally complains about some small leaks if
        # backtraces are captured.
        RUST_BACKTRACE: 0
      # We don't run `derive`'s unit tests here the way we do elsewhere (for
      # example, in `miri-test` above), as at the moment we can't easily build
      # the `proc_macro` runtime with sanitizers on. IIUC doing this would
      # require a custom rustc build, and... lol nope.
      #
      # This would mean only part of the code running under the sanitizer would
      # actually include the sanitizer's checks, which is a recipe for false
      # positives, so we just skip it, the generated code is what we care
      # about anyway.
      run: |
        cargo test -Zbuild-std --verbose --target=x86_64-unknown-linux-gnu --no-default-features
        cargo test -Zbuild-std --verbose --target=x86_64-unknown-linux-gnu --all-features