rust.yml

name: Rust

on: [push, pull_request]

jobs:
  lint:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - name: Check fmt
      run: cargo fmt -- --check

  msrv:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - uses: dtolnay/rust-toolchain@1.56.0
    - run: cargo check

  minimal-versions:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - name: Install tools
      run: cargo install cargo-hack cargo-minimal-versions
    - name: Install nightly rust
      uses: dtolnay/rust-toolchain@nightly
    - name: Check with minimal versions
      run: cargo minimal-versions check
    - name: Check with minimal versions (serialize)
      run: cargo minimal-versions check --features serialize
    - name: Check with minimal versions (encoding)
      run: cargo minimal-versions check --features encoding
    - name: Check with minimal versions (async-tokio)
      run: cargo minimal-versions check --features async-tokio

  test:
    strategy:
      matrix:
        platform: [ubuntu-latest, windows-latest]

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

    # Set variable to enable coverage
    env:
      RUSTFLAGS: -C instrument-coverage

    steps:
    - uses: actions/checkout@v4
    - name: Install coverage reporter (llvm-tools-preview)
      if: runner.os == 'Linux'
      run: rustup component add llvm-tools-preview
    - name: Install coverage reporter (grcov)
      if: runner.os == 'Linux'
      run: cargo install grcov

    - name: Build
      run: cargo build
    - name: Build benchmarks
      run: cargo bench --no-run
    - name: Build benchmarks (compare)
      working-directory: compare
      run: cargo bench --no-run
    - name: Run tests + benchmarks
      run: cargo test --all-features --benches --tests

    - name: Run tests (no features)
      env:
        LLVM_PROFILE_FILE: coverage/no-features-%p-%m.profraw
      run: cargo test --no-default-features
    - name: Run tests (serialize)
      env:
        LLVM_PROFILE_FILE: coverage/serialize-%p-%m.profraw
      run: cargo test --features serialize
    - name: Run tests (serialize+encoding)
      env:
        LLVM_PROFILE_FILE: coverage/serialize-encoding-%p-%m.profraw
      run: cargo test --features serialize,encoding
    - name: Run tests (serialize+escape-html)
      env:
        LLVM_PROFILE_FILE: coverage/serialize-escape-html-%p-%m.profraw
      run: cargo test --features serialize,escape-html
    - name: Run tests (all features)
      env:
        LLVM_PROFILE_FILE: coverage/all-features-%p-%m.profraw
      run: cargo test --all-features
    - name: Prepare coverage information for upload
      if: runner.os == 'Linux'
      run: |
        grcov ./coverage \
              -s . \
              --binary-path ./target/debug/ \
              --branch \
              --ignore-not-existing \
              --ignore 'tests/*' \
              -o ./coverage.lcov
    - name: Upload coverage to codecov.io
      if: runner.os == 'Linux'
      uses: codecov/codecov-action@v4
      with:
        files: ./coverage.lcov
        flags: unittests
        verbose: true
      continue-on-error: true

  # Check that tests that are sensitive to target are passed
  x86:
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v4
    - name: Install 32-bit target
      run: rustup target add i686-unknown-linux-gnu
    - name: Install 32-bit libs (for criterion)
      # Criterion wants to compile something.
      # Cargo builds criterion even when it is not required for those tests.
      # Without those libs compilation failed with:
      # error: linking with `cc` failed: exit status: 1
      #   |
      #   = note: LC_ALL="C" PATH="..." ...
      #   = note: /usr/bin/ld: cannot find Scrt1.o: No such file or directory
      #           /usr/bin/ld: cannot find crti.o: No such file or directory
      #           /usr/bin/ld: skipping incompatible /usr/lib/gcc/x86_64-linux-gnu/11/libgcc.a when searching for -lgcc
      #           /usr/bin/ld: cannot find -lgcc: No such file or directory
      #           collect2: error: ld returned 1 exit status
      # Fixed as suggested in this answer:
      # https://stackoverflow.com/a/16016792/7518605
      run: sudo apt install gcc-multilib
    - name: Run some tests on 32-bit target
      run: cargo test --target i686-unknown-linux-gnu --test issues
    - name: Run some tests on 32-bit target (async-tokio)
      run: cargo test --target i686-unknown-linux-gnu --features async-tokio --test async-tokio