nextest-shards.yml

name: archived nextest shards

on:
  workflow_call:
    inputs:
      suite:
        description: Closed shard-suite selector (core|oracle|tui).
        required: true
        type: string

permissions:
  contents: read

jobs:
  shards:
    name: ${{ inputs.suite }} tests shard ${{ matrix.partition }}/20 (linux x86_64)
    runs-on: ubuntu-24.04
    timeout-minutes: ${{ inputs.suite == 'oracle' && 120 || 60 }}
    env:
      CARGO_TERM_COLOR: always
      RUST_BACKTRACE: 1
      NEOVM_ORACLE_MODE: snapshot
      NEOVM_BINARY_PATH: ${{ github.workspace }}/target/release/neomacs
      NEOMACS_TUI_NEOMACS_BIN: ${{ github.workspace }}/target/release/neomacs
      NEOMACS_RUNTIME_ROOT: ${{ github.workspace }}
      TMPDIR: ${{ github.workspace }}/tmp
    strategy:
      fail-fast: false
      matrix:
        partition: [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20]
    steps:
      - name: Checkout
        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1

      - name: Prepare workspace temp directory
        run: mkdir -p "$TMPDIR/nextest"

      - name: Decode closed shard suite
        env:
          SHARD_SUITE: ${{ inputs.suite }}
        run: |
          case "$SHARD_SUITE" in
            core)
              echo "LINUX_PROFILE=build" >> "$GITHUB_ENV"
              echo "NEXTEST_FILTER=package(neovm-core)" >> "$GITHUB_ENV"
              ;;
            oracle)
              echo "LINUX_PROFILE=oracle" >> "$GITHUB_ENV"
              echo "NEXTEST_FILTER=package(neovm-oracle-tests)" >> "$GITHUB_ENV"
              ;;
            tui)
              echo "LINUX_PROFILE=oracle" >> "$GITHUB_ENV"
              echo "NEXTEST_FILTER=package(neomacs-tui-tests)" >> "$GITHUB_ENV"
              ;;
            *) echo "unknown shard suite: $SHARD_SUITE" >&2; exit 2 ;;
          esac

      - name: Install suite dependencies
        run: scripts/ci/setup-linux.sh "$LINUX_PROFILE"

      # Only the tui suite spawns GNU Emacs (pair comparisons); core and
      # oracle shards run in snapshot mode with no live oracle process.
      - name: Set up GNU Emacs oracle
        if: inputs.suite == 'tui'
        uses: ./.github/actions/setup-gnu-emacs

      - name: Set up Rust tooling
        uses: ./.github/actions/setup-rust
        with:
          # A shard compiles NOTHING: it runs prebuilt binaries out of the
          # downloaded nextest archive.  Caching ~/.cargo and target/ here
          # bought nothing and cost ~246 MiB per shard. Across all partitions,
          # those redundant caches consumed most of the repo's 10 GiB store
          # for jobs that never invoke rustc. Over the limit GitHub
          # evicts least-recently-used entries, and the release caches are
          # written once per tag while these were rewritten every CI run, so
          # the shards were evicting the release builds and making every
          # release compile from cold.
          cache: "false"
          cache-key: ci-${{ inputs.suite }}-shards
          cache-save-if: ${{ github.ref == 'refs/heads/main' }}
          install-nextest: true

      - name: Configure libfaketime for oracle tests
        if: inputs.suite == 'oracle'
        run: |
          libfaketime_so="$(dpkg -L libfaketime | grep -E '/libfaketime\.so\.1$' | head -n 1)"
          test -n "$libfaketime_so"
          echo "NEOVM_LIBFAKETIME_SO=$libfaketime_so" >> "$GITHUB_ENV"

      - name: Download shared test runtime
        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
        with:
          name: neomacs-test-runtime-linux-x86_64
          path: .

      - name: Unpack shared test runtime
        run: |
          tar xzf neomacs-test-runtime-linux-x86_64.tar.gz
          chmod +x target/release/neomacs
          test -f lisp/international/charscript.el
          test -f lisp/international/charprop.el

      - name: Download workspace test archive
        uses: actions/download-artifact@3e5f45b2cfb9172054b4087a40e8e0b5a5461e7c # v8.0.1
        with:
          name: neomacs-workspace-tests-nextest-archive-linux-x86_64
          path: .

      - name: Run nextest shard
        env:
          NEOMACS_TUI_RECORD: ${{ inputs.suite == 'tui' && 'on' || 'off' }}
        run: |
          cargo nextest run \
            --archive-file neomacs-workspace-tests.tar.zst \
            --extract-to "$TMPDIR/nextest" \
            -E "$NEXTEST_FILTER" \
            --workspace-remap "$GITHUB_WORKSPACE" \
            --partition slice:${{ matrix.partition }}/20 \
            --no-fail-fast

      - name: Upload TUI recordings
        if: inputs.suite == 'tui' && always()
        uses: ./.github/actions/upload-tui-recordings
        with:
          artifact-name: neomacs-tui-recordings-${{ github.run_id }}-${{ matrix.partition }}