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test(protocols): cover external image wire roundtrips - #3589

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test(protocols): cover external image wire roundtrips#3589
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codex/external-image-wire-contract

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@lidge-jun

@lidge-jun lidge-jun commented Sep 5, 2026

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Summary

  • Stack layer 2, depends on fix(chat): preserve external screenshot tool results and image detail #3586. Review only this layer's diff: codex/external-image-partscodex/external-image-wire-contract.
  • Add 20 actual adapter-body cases for Chat/Claude user/tool images across API-key Responses, ChatGPT forward and Chat; cover image-only results, multiple URL forms and canonical orphan repair.
  • Add two real HTTP route regressions for image/detail preservation and paired screenshot results. Correct the mock Responses SSE event names so the new terminal assertion checks a valid stream.
  • Extend the transport ownership notes; the translated Chat tool-image contract now ships in parent fix(chat): preserve external screenshot tool results and image detail #3586. Native passthrough continues to follow its upstream contract; no model OCR/entitlement claim.
  • A further all-format audit was explicitly requested. Merge remains on hold until every audited representation has a recorded disposition; all layers merge bottom-up only.

Verification

Checklist

  • Scope stays focused and avoids unrelated cleanup.
  • Docs or release notes were updated when needed.
  • Security-sensitive changes were reviewed for secrets, auth, and unsafe defaults: this layer changes tests and documentation only.

Summary by CodeRabbit

  • New Features

    • Improved compatibility for image content exchanged between supported Chat Completions, Responses, and Claude integrations.
    • Preserved image URLs, data URLs, detail settings, and screenshot-based tool results during translation between API formats.
    • Added support for maintaining image content across tool-call and tool-result workflows.
  • Bug Fixes

    • Improved handling of image-only tool outputs when forwarding requests between supported providers.
    • Enhanced reliability for streamed responses and asynchronous result publication.

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Review Change Stack

📝 Walkthrough

Walkthrough

The change expands external-image round-trip regression coverage across ingress converters, target adapters, Responses and Chat HTTP wires, tool screenshots, and async spill shutdown handling. Planning and transport documentation record the associated delivery and mapping details.

Changes

External image round-trip

Layer / File(s) Summary
Image wire translation matrix
tests/responses/openai-responses-passthrough.test.ts, structure/04_transports-and-sidecars.md
Adds Chat and Claude image fixtures and verifies image, tool-call, and orphan tool-output translation across Responses, ChatGPT, and Chat adapters. Documents image URL, detail, and screenshot preservation.
Dual-wire HTTP regression
tests/responses/chat-completions-endpoint.test.ts, devlog/_plan/260905_external_image_roundtrip/020_wire_contract.md
Adds named Responses SSE events and parameterized HTTP coverage for user images and tool screenshots on Responses and Chat routes.
Spill test determinism and delivery records
tests/responses/responses-state.test.ts, devlog/_plan/260905_external_image_roundtrip/000_plan.md, devlog/_plan/260905_external_image_roundtrip/060_delivery.md
Controls Date.now() during late spill shutdown, restores the spy before releasing the blocked operation, and waits for publication completion. Records delivery criteria and prior round-trip results.

Estimated code review effort: 3 (Moderate) | ~25 minutes

Merge Risk: 🟡 Moderate · up to 5060a

Delayed spill publication can make the shutdown regression test exceed its cleanup budget and disrupt CI. Resolve the clock handling before merge.

Sequence Diagram(s)

sequenceDiagram
  participant IngressConverter
  participant parseRequest
  participant TargetAdapter
  IngressConverter->>parseRequest: translated image and tool body
  parseRequest->>TargetAdapter: parsed request
  TargetAdapter-->>TargetAdapter: build target-specific wire payload
Loading
sequenceDiagram
  participant ChatClient
  participant ChatCompletionsEndpoint
  participant mockDualWireUpstream
  ChatClient->>ChatCompletionsEndpoint: image and screenshot request
  ChatCompletionsEndpoint->>mockDualWireUpstream: translated request
  mockDualWireUpstream-->>ChatCompletionsEndpoint: named SSE events
  ChatCompletionsEndpoint-->>ChatClient: completed response
Loading

Suggested reviewers: invalid-email-address

🚥 Pre-merge checks | ✅ 5
✅ Passed checks (5 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title clearly and concisely describes the main change: adding protocol tests for external image wire roundtrips. It is specific, relevant, and suitable for a pull request history.
Docstring Coverage ✅ Passed Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 1 functions across 3 files. (4 skipped: 4 …
Linked Issues check ✅ Passed Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check ✅ Passed Check skipped because no linked issues were found for this pull request.
✨ Finishing Touches
📝 Generate docstrings
  • Create stacked PR
  • Commit on current branch
🧪 Generate unit tests (beta)
  • Create PR with unit tests
  • Commit unit tests in branch codex/external-image-wire-contract

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Deterministic PR hygiene checks passed.

@github-actions github-actions Bot added the chore Maintenance, CI, tests, refactors, or build changes (not a user-facing bug or feature). label Sep 5, 2026
@lidge-jun

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리뷰 · 우선순위 55 / 80

이 PR은 외부 이미지 왕복 스택의 2층입니다. 밑층은 이미 리뷰된 #3586(fix(chat): preserve external screenshot tool results and image detail)이고, 이 PR base는 dev가 아니라 codex/external-image-parts입니다. 지금 dev HEAD 3c920af5f7b18ecd98f87a589d21d299f5cbe172만 보면 Chat inbound는 아직 tool 이미지·detail을 충분히 지키지 못하고, #3586이 그 변환기를 고친 뒤에야 이 테스트·문서가 의미가 있습니다. 그래서 이 변경만 따로 dev에 얹으면 기대값이 현재 HEAD 동작과 어긋날 수 있습니다.

내용물은 거의 테스트와 문서입니다. tests/responses/openai-responses-passthrough.test.ts에 Chat/Claude × user/tool/image-only tool × API-key Responses/ChatGPT forward/Chat 매트릭스와 orphan image-only 수리 케이스를 넣고, tests/responses/chat-completions-endpoint.test.ts에는 실제 HTTP로 grok(Responses)·gemini(Chat) 경로에 user 이미지+짝 스크린샷 tool 결과가 살아남는지 단언합니다. 같이 고친 mockDualWireUpstreamevent: response.output_text.delta / event: response.completed는, data-only 프레임이 터미널 observer를 통과하지 못하던 구멍을 메꿉니다. docs-site의 proxy-formats와 structure/04_transports-and-sidecars.md는 Chat tool 이미지 배열을 호환 확장으로 적고, adapter가 wire 배치를 소유한다고 못 박습니다. OCR·계정 entitlement 주장은 없습니다.

tests/responses/openai-responses-passthrough.test.ts - 기대 body를 translator 출력에서 베끼지 않고 손으로 적음. Chat tool 경로는 text를 합치고 이미지를 다음 user 메시지로 올리는 현재 정책을 그대로 고정함. Claude 쪽 expected input_image에는 detail이 없음(소스에 detail 필드가 없음). orphan 케이스는 previous_response_id를 지우고 canonical forward repair 형태를 봄.
tests/responses/chat-completions-endpoint.test.ts - store: true로 Chat sibling을 Responses 번역으로 강제. Responses 경로는 input_image+detail 순서 보존, Chat 경로는 tool 텍스트 연결 + 후속 user에 [ocx] image output... 이미지를 기대. mock SSE에 event 이름을 붙인 수정이 이 단언을 성립시킴.
docs-site/.../proxy-formats.md · structure/04_transports-and-sidecars.md - L1에서 미룬 공개 문장을 여기서 채움. native passthrough·모델/프로바이더 의존은 남김.
devlog/_plan/260905_external_image_roundtrip/* - wp1 결과와 wp2 wire-contract 위임 경계를 기록. “모든 표현을 audit하기 전에는 merge 보류, 기준은 wp3로 미룸”이 명시됨.
의존성 - #3586이 아직 OPEN·MERGEABLE. 이 PR만 squash하면 변환기 없는 테스트/문서가 dev에 들어가거나, base 재지정이 필요해짐.

메인테이너의 판단이 필요한 지점

  • 요청한 all-format audit가 끝날 때까지 merge를 정말 붙잡을지, #3586+이 PR만 bottom-up으로 먼저 넣을지. 본문·devlog는 보류가 기본.
  • audit에 넣을 표현 목록(예: Claude URL-only, video, 잘못된 detail, native passthrough)을 누가 확정할지.
  • 로컬 스위트 금지·--no-verify 푸시 전제에서, exact-head CI만으로 충분한지.
  • Chat tool 이미지 호환 확장을 문서에 지금 공개할지. #3586 L1 리뷰에서 L2로 미룬 바로 그 문장임.

너의 추천
#3586을 먼저 dev에 넣고, 이 PR은 base를 갱신한 뒤 CI 초록을 확인하세요. all-format audit 기록이 아직이면 본문 약속대로 merge는 보류하고, audit 결과를 wp3(또는 이 PR 설명에 disposition 표)로 남긴 다음 합치는 편이 안전합니다. 테스트·mock SSE·문서 방향 자체는 스택 목적에 맞으니, 닫을 이유는 없고 “밑층 대기 + audit 완료”만 조건을 걸면 됩니다.

이 댓글은 grok-bot이 작성했습니다

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Codex Review Summary

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📝 Code Review Completed 2026-09-05T05:49:39.774037Z d314ab6 Draft marked ready
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Base automatically changed from codex/external-image-parts to dev September 5, 2026 06:01
@lidge-jun
lidge-jun force-pushed the codex/external-image-wire-contract branch from d314ab6 to e5e43ee Compare September 5, 2026 06:10

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Actionable comments posted: 1

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Inline comments:
In `@tests/responses/responses-state.test.ts`:
- Line 1520: Replace the Date.now spy in the shutdown flush test with an
injectable response-state clock that advances according to elapsed time. Update
the flush setup and fallback deadline path used by flushResponseState() and
fallbackPendingResponseSpills() to consume that clock, while preserving the
test’s frozen initial timestamp behavior without globally mocking Date.now.

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📒 Files selected for processing (7)
  • devlog/_plan/260905_external_image_roundtrip/000_plan.md
  • devlog/_plan/260905_external_image_roundtrip/020_wire_contract.md
  • devlog/_plan/260905_external_image_roundtrip/060_delivery.md
  • structure/04_transports-and-sidecars.md
  • tests/responses/chat-completions-endpoint.test.ts
  • tests/responses/openai-responses-passthrough.test.ts
  • tests/responses/responses-state.test.ts

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Comment thread tests/responses/responses-state.test.ts
@lidge-jun
lidge-jun force-pushed the codex/external-image-wire-contract branch from e5e43ee to 5060ac8 Compare September 5, 2026 06:29
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