open-standards/.github/workflows/wai-neural-gates.yml

name: WAI neural sink gates

# The neural sink refuses some envelopes before it touches a model: a pin that
# the parameter sets it holds do not satisfy, with SPEC §3.1's reason
# (ModelRegistry::resolve_verified, decode_envelope, decode_multi), and a `replicate` that
# SPEC §7 does not back (decode_envelope_strict): over a capability whose registry
# class cannot back it, or with a prior that is float or absent, or that declares a
# form not established to reconstruct the same tensors at every reader. Those
# refusals live behind the
# `neural` feature, which wai-conformance does not build, and the tests that
# exercise them need no model, so wai-neural-e2e's reference filter never selects
# them. This job runs exactly those tests and fails if any of them is not run:
# a filter that matches nothing reports "0 passed" and exits 0.
#
# It also runs the `neural` dispatch tests that need no model download, over the
# committed int_mlicpp vector and the int_synth corpus: the form-less and set-form
# pins through the strict gate, the int_synth pin over the spec it reads, the
# several-file capabilities refusing a form-less pin, a pinned decode reading only
# the bytes it verified, an unpinned decode at a sink with a key log checked over
# every identity of what it read once and reading only that (or, holding the
# capability's sets to §7.9, the part §7.9 authorised), an encrypted envelope inert at the
# sink (SPEC §6.4 step 2), a WAI2 envelope whose pins pick the held model, the strict
# rule read for the capability decoded through (a sound fallback behind an unsound
# primary), SPEC §4 step 6's order of reasons after a set_incomplete decode, and the
# replicate_* reason the strict WAI2 policy reports for an entry it leaves out,
# and a candidate held at the sink leaving the strict path's reason unchanged.
# With `key_discovery` as well, it runs SPEC §3.1's check 5 at the neural sink: a
# registry given a key log refuses the committed int_mlicpp set once the log revokes
# its digest, and when the sink holds no fresh status, and decodes it while a grant
# holds it.

# One run per branch at a time. A push supersedes the run before it.
#
# There is one `macos` runner and it is the dev Mac, so every macOS job in this
# repo queues on it. With no concurrency group, a session pushing four versions
# of a branch queued four complete sets of runs and every one of them had to
# drain: on 2026-10-05 a PR's 21 contexts settled none in 70 minutes behind a
# backlog of 25 runs, and the queue grew faster than it cleared. Only the newest
# commit's verdict is wanted, so the older runs are cancelled.
#
# Verified on this forge (Forgejo 16.0.5) in `ci-test` before being added here:
# the key parses, and a newer push moves an older run to `cancelled` even while
# it is still queued, which is the case that matters.
#
# `cancel-in-progress: true` also applies to `main`. That is deliberate and
# safe here: main advances by merge commits whose tree contains the commits
# before them, so the newer run covers the older one's changes.
concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

on:
  pull_request:
    paths:
      - 'wai/wai-rs/src/neural/**'
      - 'wai/wai-rs/src/container.rs'
      - 'wai/wai-rs/src/codecs/mod.rs'
      - 'wai/wai-rs/src/codecs/prior_form.rs'
      - 'wai/wai-rs/src/pin.rs'
      - 'wai/wai-rs/src/key_log.rs'
      - 'wai/wai-rs/src/key_log/**'
      - 'wai/wai-rs/src/signer_id.rs'
      - 'wai/wai-rs/src/claim_receipt.rs'
      - 'wai/wai-rs/src/claim_text.rs'
      - 'wai/wai-rs/src/ffi.rs'
      - 'wai/wai-rs/src/ffi_neural.rs'
      - 'wai/wai-rs/tests/ffi_neural_pin.rs'
      - 'wai/wai-rs/tests/neural_cost_limit.rs'
      - 'wai/wai-rs/src/int_synth.rs'
      # The integer operator set the integer decoders load their sets through.
      - 'wai/wai-rs/src/int_ops.rs'
      - 'wai/wai-ops/**'
      - 'wai/wai-rs/src/ort_session.rs'
      - 'wai/neural-conformance/vectors/**'
      - 'wai/pin-conformance/**'
      - 'wai/wai-rs/tests/neural_native_decode.rs'
      - 'wai/wai-rs/src/int_mlicpp.rs'
      - 'wai/wai-rs/tests/vectors/int_mlicpp/**'
      # The integer capabilities the neural sink delegates to int_payload::decode_int,
      # and the vectors its tests decode through it.
      - 'wai/wai-rs/src/int_payload/**'
      - 'wai/wai-rs/src/int_video.rs'
      - 'wai/wai-rs/src/int_hyper_synth.rs'
      - 'wai/wai-rs/src/int_audio.rs'
      - 'wai/wai-rs/src/int_splat.rs'
      - 'wai/wai-rs/tests/vectors/int_hyper/**'
      - 'wai/wai-rs/tests/vectors/int_video/**'
      - 'wai/wai-rs/tests/vectors/int_audio/**'
      - 'wai/wai-rs/tests/vectors/int_splat/**'
      - 'wai/wai-rs/Cargo.lock'
      - '.github/workflows/wai-neural-gates.yml'
  schedule:
    - cron: '25 5 * * *'

jobs:
  # Does this pull request's own diff touch the paths below? This forge matches a
  # workflow's `paths:` against the push, so a merge of main into a branch fires the
  # workflow whatever the pull request changes; every job here waits on this answer.
  # A push to main, a schedule, or anything the script cannot determine answers
  # `true` (scripts/pr-touches-paths.py).
  relevant:
    name: does this change touch it
    runs-on: linux-arm64
    outputs:
      run: ${{ steps.gate.outputs.run }}
    steps:
      - uses: actions/checkout@v5
        with:
          fetch-depth: 0
      - id: gate
        run: |
          set -euo pipefail
          r=$(python3 scripts/pr-touches-paths.py .github/workflows/wai-neural-gates.yml \
                "${{ github.event.pull_request.base.sha }}" \
                "${{ github.event.pull_request.head.sha }}")
          echo "this change touches wai-neural-gates: $r"
          echo "run=$r" >> "$GITHUB_OUTPUT"

  neural-gates:
    needs: relevant
    if: needs.relevant.outputs.run == 'true'
    name: model-free refusals of the neural sink
    runs-on: linux
    # The ONNX Runtime binary the `ort` crate downloads needs glibc 2.38 and a
    # GCC 13 libstdc++ at link time (`__isoc23_strtol`, `_M_replace_cold`). The
    # `linux` label's default image is Ubuntu 22.04 (glibc 2.35, GCC 11), where
    # the `neural` test binary fails to link, so this job runs in the 24.04 image.
    container:
      image: catthehacker/ubuntu:act-24.04
    steps:
      - uses: actions/checkout@v5
      # Bootstrap rustup: the docker runner image ships no Rust.
      - name: Install Rust 1.98.0
        run: |
          export PATH="$HOME/.cargo/bin:$PATH"
          command -v rustup >/dev/null 2>&1 || \
            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y --profile minimal --default-toolchain 1.98.0
          rustup toolchain install 1.98.0 --profile minimal
          rustup default 1.98.0
          echo "$HOME/.cargo/bin" >> "$GITHUB_PATH"
      - name: Prior-hash refusal, the strict replicate gate, and the int_mlicpp dispatch
        working-directory: wai/wai-rs
        shell: bash
        # --no-default-features: `neural` needs only `ort`, not the C codec chain.
        # --exact: each name selects one test. The count check turns a renamed or
        # removed test into a failure instead of a silent "0 passed".
        run: |
          set -euo pipefail
          cargo test --no-default-features --features neural --test neural_native_decode -- \
            --exact resolve_checked_verifies_prior_hash strict_decode_gates_unsound_replicate \
            int_mlicpp_decodes_through_the_strict_dispatch int_mlicpp_set_pin_through_the_strict_dispatch \
            int_synth_pin_covers_the_spec_it_reads several_file_capabilities_need_the_set_form \
            pinned_decode_reads_only_verified_bytes wai2_decode_multi_picks_the_verified_rendition \
            strict_gate_reads_the_capability_it_decodes_through set_incomplete_at_step_3_outranks_the_fallback_refusal \
            decode_multi_strict_reports_replicate_reasons strict_gate_ignores_a_held_capability_it_cannot_dispatch \
            int_hyper_decodes_through_the_neural_dispatch int_synth_check_5_covers_the_spec_a_model_directory_holds \
            an_integer_capability_without_a_decoder_moves_on_to_the_fallback \
            a_listing_that_does_not_match_the_files_read_authorises_nothing \
            a_pinned_set_revoked_under_its_file_digest_is_refused_through_a_listing_pin \
            a_granted_listing_authorises_only_the_files_it_names \
            an_encrypted_envelope_is_inert_at_the_reference_sink \
            a_revoke_only_key_log_checks_and_reads_the_set_once \
            2>&1 | tee "$RUNNER_TEMP/neural-gates.log"
          grep -q "test result: ok. 20 passed; 0 failed" "$RUNNER_TEMP/neural-gates.log"
      # The integer video, audio and splat capabilities through the neural dispatch, which
      # delegates them to int_payload::decode_int: each decodes to Decoded::Int with its
      # committed SHA-256, and wai.video.int_motion is advertised with ModelRegistry::builtin.
      - name: The neural sink decodes the integer video, audio and splat payloads
        working-directory: wai/wai-rs
        shell: bash
        run: |
          set -euo pipefail
          cargo test --no-default-features --features neural,video_int,audio_int,splat_int --test neural_native_decode -- \
            --exact integer_media_decode_through_the_neural_dispatch \
            2>&1 | tee "$RUNNER_TEMP/neural-int.log"
          grep -q "test result: ok. 1 passed; 0 failed" "$RUNNER_TEMP/neural-int.log"
      # The registry's cost limit refuses an integer payload over it before any symbol is
      # decoded (cost_over_limit) and moves on to the next entry; the C ABI refuses an
      # integer video it has no output kind for before decoding it; and the declared
      # cost over a registry's set, and through the C ABI given the set's path, is the
      # library's. Its own binary: a live-bytes allocator measures each refusal.
      - name: The neural sink applies the declared cost before decoding
        working-directory: wai/wai-rs
        shell: bash
        run: |
          set -euo pipefail
          cargo test --no-default-features --features neural,ffi,video_int,audio_int,splat_int --test neural_cost_limit \
            2>&1 | tee "$RUNNER_TEMP/neural-cost.log"
          grep -q "test result: ok. 3 passed; 0 failed" "$RUNNER_TEMP/neural-cost.log"
      - name: A key log refuses a revoked pinned set at the neural sink (SPEC §3.1 check 5)
        working-directory: wai/wai-rs
        shell: bash
        run: |
          set -euo pipefail
          cargo test --no-default-features --features neural,key_discovery --test neural_native_decode -- \
            --exact int_mlicpp_revoked_set_is_refused_through_the_key_log \
            2>&1 | tee "$RUNNER_TEMP/neural-key-log.log"
          grep -q "test result: ok. 1 passed; 0 failed" "$RUNNER_TEMP/neural-key-log.log"
      # Library unit tests that exist only under `neural` and need no model: the
      # bmshj2018 CDF table cache stays bounded and evicts least recently used;
      # the ONNX reader finds a tensor kept in another file, wherever it sits; and a
      # pinned decode refuses such a model with set_incomplete before the runtime
      # sees it, while the same graph with its tensor inside loads.
      - name: Model-free neural unit tests
        working-directory: wai/wai-rs
        shell: bash
        run: |
          set -euo pipefail
          cargo test --no-default-features --features neural --lib -- --exact neural::image::tests::cdf_cache_is_bounded \
            neural::onnx_external::tests::a_tensor_kept_inside_the_model_is_not_external \
            neural::onnx_external::tests::an_external_initializer_is_found_with_its_location \
            neural::onnx_external::tests::an_external_tensor_in_a_subgraph_is_found \
            neural::onnx_external::tests::external_data_without_a_location_still_marks_the_tensor \
            neural::onnx_external::tests::bytes_that_are_not_a_protobuf_message_are_an_error \
            neural::params::tests::a_pinned_model_with_external_tensors_is_set_incomplete \
            2>&1 | tee "$RUNNER_TEMP/neural-lib.log"
          grep -q "test result: ok. 7 passed; 0 failed" "$RUNNER_TEMP/neural-lib.log"
      - name: The neural C ABI reports pin and replicate refusals and decodes WAI2
        working-directory: wai/wai-rs
        shell: bash
        run: |
          set -euo pipefail
          cargo test --no-default-features --features neural,ffi --test ffi_neural_pin -- \
            --exact tampered_model_is_wai_err_prior strict_replicate_is_wai_err_unsound_replicate \
            wai2_decode_ex_picks_the_held_pin failed_decode_ex_clears_out \
            2>&1 | tee "$RUNNER_TEMP/neural-ffi.log"
          grep -q "test result: ok. 4 passed; 0 failed" "$RUNNER_TEMP/neural-ffi.log"