ci.yml

name: ci

env:
  CARGO_TERM_COLOR: always
  CLICOLOR: 1

on:
  push:
    branches:
      - main
      - 'run-ci/**'
      - '**/run-ci/**'
    tags-ignore:
      - '*'
    paths:
      - '.github/**'
      - 'ci/**'
      - 'etc/**'
      - 'src/**'
      - 'tests/**'
      - 'cargo-*/**'
      - 'gix*/**'
      - '*.toml'
      - Makefile
  pull_request:
    branches:
      - main
    paths:
      - '.github/**'
      - 'ci/**'
      - 'etc/**'
      - 'src/**'
      - 'tests/**'
      - 'cargo-*/**'
      - 'gix*/**'
      - '*.toml'
      - Makefile
  workflow_dispatch:

jobs:
  pure-rust-build:
    runs-on: ubuntu-latest
    container: debian:buster
    steps:
      - uses: actions/checkout@v4
      - name: Prerequisites
        run: apt-get update && apt-get install --no-install-recommends -y ca-certificates curl gcc libc-dev # gcc is required as OS abstraction
      - name: install Rust via Rustup
        run: curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal;
      - uses: Swatinem/rust-cache@v2
      - run: /github/home/.cargo/bin/cargo install --debug --locked --no-default-features --features max-pure --path .

  test:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
      - name: Setup dependencies
        run:
          sudo apt-get install tree
      - uses: extractions/setup-just@v2
      - uses: taiki-e/install-action@v2
        with:
          tool: nextest
      - name: test
        env:
          CI: true
          GIX_TEST_IGNORE_ARCHIVES: 1
        run: just ci-test

  test-fast:
    strategy:
      matrix:
        os:
          - windows-latest
          - macos-latest
          - ubuntu-latest
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
      - name: Setup dependencies (macos)
        if: startsWith(matrix.os, 'macos')
        run:
          brew install tree openssl gnu-sed
      - name: "cargo check default features"
        if: startsWith(matrix.os, 'windows')
        run: cargo check --all --bins --examples
      - uses: taiki-e/install-action@v2
        with:
          tool: nextest
      - name: "Test (nextest)"
        run: cargo nextest run --all --no-fail-fast
      - name: Doctest
        run: cargo test --doc

  test-32bit:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        target: [ armv7-linux-androideabi ]
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@stable
      - uses: Swatinem/rust-cache@v2
      - name: Install Rust
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: stable
          targets: ${{ matrix.target }}
      - uses: taiki-e/install-action@v2
        with:
          tool: cross
      - name: "check"
        run: cross check -p gix --target ${{ matrix.target }}
      - name: "Test (unit)"
        # run high-level unit tests that exercise a lot of code while being pure Rust to ease building test binaries.
        # TODO: figure out why `git` doesn't pick up environment configuration so build scripts fail when using `-p gix`.
        run: cross test -p gix-hashtable --target ${{ matrix.target }}

  lint:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - uses: dtolnay/rust-toolchain@master
        with:
          toolchain: stable
          components: clippy,rustfmt
      - uses: extractions/setup-just@v2
      - name: Run cargo clippy
        run: just clippy -D warnings -A unknown-lints --no-deps
      - name: Run cargo doc
        run: just doc
      - name: Run cargo fmt
        run: cargo fmt --all -- --check
      - name: Run cargo diet
        run: |
          curl -LSfs https://raw.githubusercontent.com/the-lean-crate/cargo-diet/master/ci/install.sh | \
           sh -s -- --git the-lean-crate/cargo-diet --target x86_64-unknown-linux-musl --tag v1.2.4

          # Let's not fail CI for this, it will fail locally often enough, and a crate a little bigger
          # than allows is no problem either if it comes to that.
          just check-size || true

  cargo-deny:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        checks:
          - advisories
          - bans licenses sources

    # Prevent sudden announcement of a new advisory from failing ci:
    continue-on-error: ${{ matrix.checks == 'advisories' }}

    steps:
      - uses: actions/checkout@v4
      - uses: EmbarkStudios/cargo-deny-action@v2
        with:
          command: check ${{ matrix.checks }}

  wasm:
    name: WebAssembly
    runs-on: ubuntu-latest
    continue-on-error: true
    strategy:
      matrix:
        target: [ wasm32-unknown-unknown, wasm32-wasi ]
    steps:
      - uses: actions/checkout@master
      - name: Install Rust
        run: rustup update stable && rustup default stable && rustup target add ${{ matrix.target }}
      - uses: Swatinem/rust-cache@v2
      - run: set +x; for name in gix-actor gix-attributes gix-bitmap gix-chunk gix-command gix-commitgraph gix-config-value gix-date gix-glob gix-hash gix-hashtable gix-mailmap gix-object gix-packetline gix-path gix-pathspec gix-prompt gix-quote gix-refspec gix-revision gix-traverse gix-url gix-validate; do (cd $name && cargo build --target ${{ matrix.target }}); done
        name: crates without feature toggles
      - run: set +x; for feature in progress fs-walkdir-parallel parallel io-pipe crc32 zlib zlib-rust-backend fast-sha1 rustsha1 cache-efficiency-debug; do (cd gix-features && cargo build --features $feature --target ${{ matrix.target }}); done
        name: features of gix-features
      - run: set +x; for name in gix-pack; do (cd $name && cargo build --features wasm --target ${{ matrix.target }}); done
        name: crates with 'wasm' feature
      - run: cd gix-pack && cargo build --all-features --target ${{ matrix.target }}
        name: gix-pack with all features (including wasm)

  check-packetline:
    strategy:
      fail-fast: false
      matrix:
        os:
          - ubuntu-latest
          # We consider this script read-only and its effect is the same everywhere.
          # However, when changes are made to `etc/copy-packetline.sh`, re-enable the other platforms for testing.
    #       - macos-latest
    #       - windows-latest
    runs-on: ${{ matrix.os }}
    defaults:
      run:
        shell: bash
    steps:
      - uses: actions/checkout@v4
      - name: Check that working tree is initially clean
        run: |
          set -x
          git status
          git diff --exit-code
      - name: Regenerate gix-packetline-blocking/src
        run: etc/copy-packetline.sh
      - name: Check that gix-packetline-blocking/src was already up to date
        run: |
          set -x
          git status
          git diff --exit-code

  # Dummy job to have a stable name for the "all tests pass" requirement
  tests-pass:
    name: Tests pass
    needs:
      - pure-rust-build
      - test
      - test-fast
      - test-32bit
      - lint
      - cargo-deny
      - wasm
      - check-packetline
    if: always() # always run even if dependencies fail
    runs-on: ubuntu-latest
    steps:
      # fail if ANY dependency has failed or cancelled
      - if: "contains(needs.*.result, 'failure') || contains(needs.*.result, 'cancelled')"
        run: exit 1
      - run: exit 0