ducoterra
7fce6572d0
Single consolidated commit for four completed, validated phases (77, 78, 79, 80). The pipeline run left all work uncommitted because the harness commits only with PHASE_COMMIT=1 while child executors are forbidden from committing; the phases themselves all passed validation and moved to .agents/phases/complete/. Phase 77 — navbar view refresh - router.js dispatches bor:view-refresh on re-show / active re-click / popstate (gated on wasMounted; first show and boot exempt) - History / RAG / Sources / Tuning re-fetch on refresh (admin branch); Chat deliberately excluded (stream survival) - History "Refresh" button (admin-only, in-flight disable + status line) - New story suite tests/e2e/test_navbar_refresh.py (7 tests) Phase 78 — static background - Removed the animated glow layers; static 44px grid over the flat --bg canvas; default and reduced-motion renders byte-identical - Updated background/theme E2E suites; removed bg-glow test pins Phase 79 — API tokens - api_tokens model + migration 0012; hash-only token service - Admin tokens API + Tokens admin view; POST /api/token-auth; live-revoking require_user on chat / suggestions / document content - Frontend token gate with localStorage cache; anonymous E2E suites migrated to token login - New story suite tests/e2e/test_api_tokens.py (9 tests) Phase 80 — history suggestion chips - last_questions() endpoint with SEED fallback; startNewChat() refetch - Seed-semantics docs (config.py, .env.example, README) - Integration state matrix + E2E suite rewritten to the 4 chip states Also included: phase-76 report artifacts and the repo restore-test-db skill (previously untracked), scripts/* ruff fixes from phase 77. Final gate state (phase 80 final pass, covers everything above): - uv run pytest --cov=app → 1637 passed, 0 failed, app/ coverage 99% - uv run ruff check . && uv run pyright → clean, 0 errors - Per-phase story E2E suites green in isolation
1409 lines
59 KiB
Python
1409 lines
59 KiB
Python
"""Integration: POST /api/chat — the RAG turn end-to-end.
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Real Postgres (compose) seeded from ``tests/fixtures/docs/`` through the
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real importer; the LLM client is a deterministic in-process fake
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(token-overlap embeddings, canned streamed answer), so no network is
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needed and the cosine ordering is meaningful: the Kubernetes question
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retrieves the Kubernetes document.
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Requires: podman compose up -d db
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"""
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from __future__ import annotations
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import asyncio
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import hashlib
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import json
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import logging
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import math
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import re
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from collections.abc import Iterator
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from pathlib import Path
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from typing import TYPE_CHECKING, Any, cast
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import pytest
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from fastapi.testclient import TestClient
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from sqlalchemy import delete, func, select, text
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from app.api import chat as chat_api
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from app.config import Settings, get_settings
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from app.main import app as fastapi_app
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from app.models import Chunk, GitSource, QueryLog
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from app.rag import agent
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from app.rag.agent import AGENT_TOOLS
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from app.rag.importer import import_sources
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from app.rag.llm import EmbeddingError, LLMError, StreamPiece, ToolCallPiece
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from tests.conftest import ADMIN_PASSWORD
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if TYPE_CHECKING:
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from app.rag.scaffolding import ScaffoldingFilter
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FIXTURES = Path(__file__).resolve().parents[1] / "fixtures" / "docs"
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QUESTION = "How is my Kubernetes cluster set up?"
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OFF_TOPIC = "How do I bake sourdough bread?"
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DIM = 768
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_TOKEN_RE = re.compile(r"[a-z0-9]+")
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def _token_vec(text: str) -> list[float]:
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"""Bag-of-words unit vector — same algorithm as the E2E mock, so the
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cosine behaviour here matches what the story E2E sees."""
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vec = [0.0] * DIM
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for tok in _TOKEN_RE.findall(text.lower()):
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vec[int(hashlib.md5(tok.encode()).hexdigest(), 16) % DIM] += 1.0
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norm = math.sqrt(sum(v * v for v in vec)) or 1.0
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return [v / norm for v in vec]
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class FakeRagLLM:
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"""Duck-typed :class:`app.rag.llm.LLMClient` stand-in for the chat path."""
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def __init__(
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self,
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answer: str = "Hey — you've got this! Talos, Cilium, three nodes. 🧠",
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thinking: str = "",
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embed_error: Exception | None = None,
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stream_error: Exception | None = None,
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fail_mid_stream: bool = False,
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tool_script: list[list[StreamPiece | ToolCallPiece]] | None = None,
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embed_fail_count: int = 0,
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stream_fail_count: int = 0,
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answer_sequence: list[str] | None = None,
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) -> None:
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self.settings = Settings(_env_file=None) # pyright: ignore[reportCallIssue]
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self.embed_batches = 0
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self.answer = answer
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self.thinking = thinking
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self.embed_error = embed_error
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self.stream_error = stream_error
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self.fail_mid_stream = fail_mid_stream
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#: Phase 71: per-request canned answers (the recovery matrix):
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#: request *i* (0-based, in ``seen_messages`` order) yields
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#: ``answer_sequence[i]``; once exhausted it falls back to
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#: ``answer``. ``None`` keeps the single-``answer`` behavior.
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self.answer_sequence = answer_sequence
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#: Phase 67: the first N ``embed_one`` calls raise an
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#: ``EmbeddingError`` (then succeed) — a dead-then-recovered
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#: embeddings endpoint for the retry loop.
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self.embed_fail_count = embed_fail_count
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#: Phase 67: the first N ``chat_stream`` requests die with an
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#: ``LLMError`` BEFORE any piece (then succeed) — a dead-then-
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#: recovered answer endpoint for the pre-first-piece retry rule.
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self.stream_fail_count = stream_fail_count
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self.question_embeds: list[str] = []
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#: Phase 74: assistant history messages may carry
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#: ``reasoning_content`` — the dict values stay strings, but the
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#: key set is wider than the pre-phase ``{role, content}`` shape.
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self.seen_messages: list[list[dict[str, Any]]] = []
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#: Every request's ``tools`` value (phase 37) — ``None`` is the
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#: pre-phase request shape (the key is absent from the payload).
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self.seen_tools: list[list[dict[str, Any]] | None] = []
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#: Canned per-agent-round piece lists (phase 37): ``tool_script[i]``
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#: is yielded for the *i*-th request that carries a non-None
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#: ``tools`` parameter (a request the agent loop is offering tools
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#: on). A request without tools — the deflected direct path, the
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#: cap-forced answer request, or the kill-switch
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#: (``agent_max_rounds=0``) single-request path — always yields the
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#: thinking + answer stream below, so a deflected turn through this
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#: fake is byte-identical to the plain fake's output.
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self.tool_script: list[list[StreamPiece | ToolCallPiece]] = list(tool_script or [])
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async def embed(self, texts: list[str]) -> list[list[float]]:
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self.embed_batches += 1
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return [_token_vec(t) for t in texts]
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async def chat(
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self, messages: list[dict[str, str]], model: str | None = None
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) -> str:
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"""Deterministic ``lite`` stand-in for the import-time summaries
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(phase 30) — same convention as ``tests.fakes.FakeEmbedder.chat``."""
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user = next((m["content"] for m in messages if m.get("role") == "user"), "")
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first = user.split()
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return "Summary of " + (first[0] if first else "<empty>")
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async def embed_one(self, text: str) -> list[float]:
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if self.embed_error is not None:
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raise self.embed_error
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if self.embed_fail_count > 0:
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self.embed_fail_count -= 1
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self.question_embeds.append(text)
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raise EmbeddingError("simulated embeddings endpoint failure")
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self.question_embeds.append(text)
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return _token_vec(text)
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def _answer_for_request(self) -> str:
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"""The canned answer for the request that was just recorded
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(phase 71 ``answer_sequence``; ``None`` → the single answer)."""
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if self.answer_sequence is None:
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return self.answer
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index = len(self.seen_messages) - 1
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if index < len(self.answer_sequence):
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return self.answer_sequence[index]
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return self.answer
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async def chat_stream(
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self,
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messages: list[dict[str, Any]],
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tools: list[dict[str, Any]] | None = None,
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scaffolding: ScaffoldingFilter | None = None,
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):
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"""Typed stream (phase 17): ``thinking`` slices (same 12-char
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cadence as content) **before** the content pieces. With the
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default ``thinking=""`` this yields content-only pieces — today's
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behavior, new yield type. Phase 37: *tools* is the agent loop's
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``tools=…`` passthrough (recorded in ``seen_tools``); a request
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with tools consumes the next ``tool_script`` entry, if any.
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Phase 71: *scaffolding* mirrors ``LLMClient.chat_stream`` — the
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canned content pieces are fed through the caller's filter (an
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empty clean result yields nothing) and the held tail is flushed
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on normal completion, so a scaffolding-only canned answer streams
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zero content pieces and leaves ``stripped_chars`` behind for the
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recovery policy to key on. ``None`` (e.g. pre-phase callers) keeps
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the byte-identical raw path."""
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self.seen_messages.append(messages)
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self.seen_tools.append(tools)
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if self.stream_error is not None:
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raise self.stream_error
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if self.stream_fail_count > 0:
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self.stream_fail_count -= 1
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raise LLMError("simulated pre-piece endpoint failure")
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mid_stream_drop = False
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raw: list[StreamPiece | ToolCallPiece]
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if tools is not None and self.tool_script:
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raw = self.tool_script.pop(0)
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elif self.fail_mid_stream:
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raw = [StreamPiece("content", "partial ")]
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mid_stream_drop = True
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else:
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answer = self._answer_for_request()
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raw = cast(
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"list[StreamPiece | ToolCallPiece]",
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[
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StreamPiece("thinking", self.thinking[i : i + 12])
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for i in range(0, len(self.thinking), 12)
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]
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+ [
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StreamPiece("content", answer[i : i + 12])
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for i in range(0, len(answer), 12)
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],
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)
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if scaffolding is None:
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for piece in raw:
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yield piece
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if mid_stream_drop:
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raise LLMError("mid-stream dropout")
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return
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for piece in raw:
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if isinstance(piece, StreamPiece) and piece.kind == "content":
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cleaned = scaffolding.feed(piece.text)
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if cleaned:
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yield StreamPiece("content", cleaned)
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else:
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yield piece
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if mid_stream_drop:
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# The tail is NOT flushed on a failed stream — the real
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# client only flushes a cleanly completed one.
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raise LLMError("mid-stream dropout")
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tail = scaffolding.flush()
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if tail:
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yield StreamPiece("content", tail)
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@pytest.fixture()
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def seeded_kb(db) -> Iterator[FakeRagLLM]:
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"""Fresh Postgres with the fixture docs imported (real pipeline)."""
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db.execute(text("TRUNCATE chunks, documents, query_log"))
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db.commit()
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llm = FakeRagLLM()
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summary = asyncio.run(import_sources([FIXTURES], llm, session=db))
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assert summary.added == 13 # A9 formats (phase 47 added quadlet+j2); .hidden/ skipped
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yield llm
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db.execute(text("TRUNCATE chunks, documents, query_log"))
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db.commit()
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@pytest.fixture(autouse=True)
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def _admin_signed_in(client: TestClient) -> None:
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"""Phase 79 (task 03): ``POST /api/chat`` is user-gated — every turn
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in this module runs as the signed-in ADMIN, so the shared ``client``
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logs in once per test (the TestClient cookie jar carries the session
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for every request of the test). The anonymous 401 contract itself is
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pinned in ``test_auth_api.py``."""
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r = client.post("/api/login", json={"password": ADMIN_PASSWORD})
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assert r.status_code == 204, f"admin login failed: {r.status_code} {r.text}"
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def _stream_chat(client: TestClient, message: str) -> tuple[int, str, list[dict[str, Any]]]:
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with client.stream("POST", "/api/chat", json={"message": message}) as r:
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assert r.status_code == 200
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assert r.headers["content-type"].startswith("text/event-stream")
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buf = ""
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frames: list[dict[str, Any]] = []
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for part in r.iter_text():
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buf += part
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while "\n\n" in buf:
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frame, buf = buf.split("\n\n", 1)
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frame = frame.strip()
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if frame.startswith("data:"):
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frames.append(json.loads(frame.removeprefix("data:").strip()))
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assert buf.strip() == "", "stream must end on a frame boundary"
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return r.status_code, r.headers["content-type"], frames
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def test_chat_streams_deltas_then_done_with_sources(client, db, seeded_kb: FakeRagLLM) -> None:
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fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: seeded_kb
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try:
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_, _, frames = _stream_chat(client, QUESTION)
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finally:
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fastapi_app.dependency_overrides.clear()
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deltas = [f for f in frames if f.get("type") == "delta"]
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assert len(deltas) >= 2 # genuinely streamed
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assert "".join(d["text"] for d in deltas) == seeded_kb.answer
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assert not any(f.get("type") == "error" for f in frames)
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done = [f for f in frames if f.get("type") == "done"]
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assert len(done) == 1
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assert frames[-1]["type"] == "done" # done is the final event
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assert done[0]["deflected"] is False
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assert done[0]["suggestions"] == []
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sources = done[0]["sources"]
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assert sources, "done must carry the cited sources"
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assert sources[0]["path"] == "homelab/kubernetes.md"
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assert sources[0]["source"] == "docs"
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assert sources[0]["title"] == "Kubernetes Homelab Cluster"
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# The LLM received the locked HIGH prompt with the FULL document text.
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(system, user) = seeded_kb.seen_messages[0][0], seeded_kb.seen_messages[0][1]
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assert user["content"] == QUESTION
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assert "<relevance>HIGH</relevance>" in system["content"]
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assert "DEFLECT_MODE" not in system["content"]
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assert "<documents>" in system["content"]
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assert "Talos Linux" in system["content"] # full doc, not just the chunk
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assert "HONESTY GATE" in system["content"]
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def test_chat_streams_thinking_before_deltas(client, db, seeded_kb: FakeRagLLM) -> None:
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"""Phase 17: ``thinking`` frames precede every ``delta`` frame and
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reassemble to the model's reasoning; the ``done`` contract is
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unchanged."""
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thinker = FakeRagLLM(
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thinking=(
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"Step 1: parse the question. Step 2: check the kubernetes doc. "
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"Step 3: name Talos, Cilium, three nodes. Step 4: answer."
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)
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)
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fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: thinker
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try:
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_, _, frames = _stream_chat(client, QUESTION)
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finally:
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fastapi_app.dependency_overrides.clear()
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thinking = [f for f in frames if f.get("type") == "thinking"]
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deltas = [f for f in frames if f.get("type") == "delta"]
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assert len(thinking) >= 1 # genuinely streamed
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assert len(deltas) >= 2
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# Every thinking frame precedes every delta frame.
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ordered = [f["type"] for f in frames if f["type"] in ("thinking", "delta")]
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assert ordered == ["thinking"] * len(thinking) + ["delta"] * len(deltas)
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assert all(set(f.keys()) == {"type", "text"} for f in thinking)
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assert "".join(f["text"] for f in thinking) == thinker.thinking
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assert "".join(d["text"] for d in deltas) == thinker.answer
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# Done still last; sources unchanged by the thinking extension.
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done = frames[-1]
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assert done["type"] == "done"
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assert done["deflected"] is False
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assert done["suggestions"] == []
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assert done["sources"][0]["path"] == "homelab/kubernetes.md"
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assert done["sources"][0]["source"] == "docs"
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assert not any(f.get("type") == "error" for f in frames)
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def test_chat_thinking_suppressed_when_disabled(
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client, db, monkeypatch: pytest.MonkeyPatch
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) -> None:
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"""Phase 17 kill-switch: ``BOR_STREAM_THINKING=0`` drops every
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``thinking`` frame; the delta stream is byte-identical to the
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thinking-free case."""
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thinker = FakeRagLLM(thinking="hidden reasoning that must never reach the wire")
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fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: thinker
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# Same honesty gate the conftest/module already use (mock-calibrated
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# 0.30 from the environment) — only the kill-switch changes.
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live = get_settings()
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monkeypatch.setattr(
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chat_api,
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"get_settings",
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lambda: Settings(
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_env_file=None, # pyright: ignore[reportCallIssue]
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relevance_threshold=live.relevance_threshold,
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stream_thinking=False,
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),
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)
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try:
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_, _, frames = _stream_chat(client, QUESTION)
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finally:
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fastapi_app.dependency_overrides.clear()
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assert not any(f.get("type") == "thinking" for f in frames)
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deltas = [f for f in frames if f.get("type") == "delta"]
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assert "".join(d["text"] for d in deltas) == thinker.answer
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assert frames[-1]["type"] == "done"
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assert not any(f.get("type") == "error" for f in frames)
|
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|
||
|
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def test_chat_writes_query_log_row(client, db, seeded_kb: FakeRagLLM) -> None:
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fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: seeded_kb
|
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try:
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_stream_chat(client, QUESTION)
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finally:
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fastapi_app.dependency_overrides.clear()
|
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rows = db.scalars(select(QueryLog)).all()
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assert len(rows) == 1
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row = rows[0]
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assert row.question == QUESTION
|
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assert row.deflected is False
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total_chunks = db.scalar(select(func.count()).select_from(Chunk))
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||
# chunk_hits is the fused candidate set (cosine top-N ∪ FTS top-N).
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assert 1 <= row.chunk_hits <= total_chunks
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assert row.top_score > 0.0 # genuine token-overlap cosine, best hit
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||
assert row.top_score <= 1.0
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||
assert "docs/homelab/kubernetes.md" in row.sources
|
||
assert row.latency_ms >= 0
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# Why the gate answered (A8 revised): cosine over the threshold OR a
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||
# lexical hit. The mock-calibrated threshold (0.30, see tests/conftest.py)
|
||
# makes the cosine branch true here; the FTS branch is covered too —
|
||
# "kubernetes" / "cluster" match the doc's tsvector.
|
||
thr = get_settings().relevance_threshold
|
||
assert row.top_score >= thr or (row.fts_hits or 0) > 0
|
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assert (row.fts_hits or 0) >= 1 # the lexical branch really fired
|
||
|
||
|
||
def test_off_topic_question_deflects_honestly(client, db, seeded_kb: FakeRagLLM) -> None:
|
||
"""Phase 04 contract: weak retrieval ⇒ honest deflection, no fake answer."""
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: seeded_kb
|
||
try:
|
||
_, _, frames = _stream_chat(client, OFF_TOPIC)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert not any(f.get("type") == "error" for f in frames)
|
||
deltas = [f for f in frames if f.get("type") == "delta"]
|
||
assert len(deltas) >= 2 # the LLM is still called (voice stays chippy)
|
||
done = frames[-1]
|
||
assert done["type"] == "done"
|
||
assert done["deflected"] is True
|
||
# 2-3 alternative chips, all non-empty, derived from real titles/topics.
|
||
assert 2 <= len(done["suggestions"]) <= 3
|
||
assert all(s.strip() for s in done["suggestions"])
|
||
assert any(
|
||
"Deploying a New Service" in s for s in done["suggestions"]
|
||
), "the best weak-hit title must be offered as a chip"
|
||
assert done["sources"], "weak hits are still reported as the closest sources"
|
||
|
||
# The LLM saw the LOW prompt: DEFLECT_MODE + titles, never doc content.
|
||
(system, user) = seeded_kb.seen_messages[0][0], seeded_kb.seen_messages[0][1]
|
||
assert user["content"] == OFF_TOPIC
|
||
assert "<relevance>LOW</relevance>" in system["content"]
|
||
assert "DEFLECT_MODE" in system["content"]
|
||
assert "HONESTY GATE" in system["content"]
|
||
assert "Talos Linux" not in system["content"] # full doc content never sent
|
||
assert "<documents>" not in system["content"]
|
||
|
||
# Durable record: deflected=true + the weak top_score. Deflection is
|
||
# only reached when the cosine is under the threshold AND no chunk
|
||
# FTS-matches the question — so fts_hits must be zero here.
|
||
row = db.scalars(select(QueryLog)).one()
|
||
assert row.question == OFF_TOPIC
|
||
assert row.deflected is True
|
||
assert 0.0 < row.top_score < get_settings().relevance_threshold
|
||
assert row.fts_hits == 0
|
||
assert row.chunk_hits >= 1
|
||
|
||
|
||
def test_keyword_question_grounded_by_lexical_hit_despite_weak_cosine(
|
||
client, db, seeded_kb: FakeRagLLM
|
||
) -> None:
|
||
"""Phase 09: a name-your-tool question the vector model barely ranks
|
||
("kafkabridge" only appears in static-dns.json) must still be grounded
|
||
via the FTS branch — LOW only fires at weak cosine AND zero hits."""
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: seeded_kb
|
||
try:
|
||
_, _, frames = _stream_chat(client, "How does kafkabridge work?")
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
done = frames[-1]
|
||
assert done["type"] == "done"
|
||
assert done["deflected"] is False # weak cosine, but a lexical hit
|
||
assert done["suggestions"] == []
|
||
sources = done["sources"]
|
||
assert sources and sources[0]["path"] == "homelab/networking/static-dns.json"
|
||
|
||
(system, _user) = seeded_kb.seen_messages[0][0], seeded_kb.seen_messages[0][1]
|
||
assert "<relevance>HIGH</relevance>" in system["content"] # grounded prompt
|
||
|
||
row = db.scalars(select(QueryLog)).one()
|
||
assert row.deflected is False
|
||
assert row.top_score < get_settings().relevance_threshold # weak vector score
|
||
assert (row.fts_hits or 0) >= 1 # …and it is the FTS hit that grounds it
|
||
assert "docs/homelab/networking/static-dns.json" in row.sources
|
||
|
||
|
||
def test_chat_empty_kb_streams_empty_sources(client, db) -> None:
|
||
db.execute(text("TRUNCATE chunks, documents, query_log"))
|
||
db.commit()
|
||
llm = FakeRagLLM()
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: llm
|
||
try:
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
# Nothing retrieved ⇒ nothing to pretend to know: honest deflection.
|
||
done = frames[-1]
|
||
assert done["type"] == "done"
|
||
assert done["deflected"] is True
|
||
assert done["sources"] == []
|
||
assert 2 <= len(done["suggestions"]) <= 3 # onboarding fallback chips
|
||
(system, _user) = llm.seen_messages[0][0], llm.seen_messages[0][1]
|
||
assert "DEFLECT_MODE" in system["content"]
|
||
assert "nothing close at all" in system["content"]
|
||
row = db.scalars(select(QueryLog)).one()
|
||
assert row.deflected is True
|
||
assert row.top_score == 0.0
|
||
assert row.chunk_hits == 0
|
||
assert row.sources == ""
|
||
|
||
|
||
def test_chat_embed_failure_yields_error_event(
|
||
client, db, seeded_kb: FakeRagLLM, monkeypatch: pytest.MonkeyPatch
|
||
) -> None:
|
||
"""Phase 67: a dead embeddings endpoint retries on the configured
|
||
budget — one ``retry`` frame per restart (the attempt about to be
|
||
tried, 1-based) — and settles on the existing terminal error frame;
|
||
no query_log row. Zero delay keeps the exhaustion path fast."""
|
||
broken = FakeRagLLM(embed_error=EmbeddingError("embeddings endpoint down"))
|
||
live = get_settings()
|
||
monkeypatch.setattr(
|
||
chat_api, "get_settings", lambda: _retry_settings(live)
|
||
)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: broken
|
||
try:
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
retries = live.llm_retries
|
||
assert [f["type"] for f in frames] == ["retry"] * retries + ["error"]
|
||
assert [f["attempt"] for f in frames if f["type"] == "retry"] == list(
|
||
range(2, retries + 2)
|
||
)
|
||
assert all(
|
||
f["max_attempts"] == retries + 1 for f in frames if f["type"] == "retry"
|
||
)
|
||
assert "embedding" in frames[-1]["detail"]
|
||
assert db.scalars(select(QueryLog)).all() == []
|
||
|
||
|
||
def test_chat_mid_stream_failure_yields_error_after_partial_deltas(client, db) -> None:
|
||
broken = FakeRagLLM(fail_mid_stream=True)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: broken
|
||
try:
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert [f["type"] for f in frames] == ["delta", "error"]
|
||
assert "dropped the connection" in frames[1]["detail"]
|
||
# No done event, no log row for a turn that never completed.
|
||
assert db.scalars(select(QueryLog)).all() == []
|
||
|
||
|
||
def test_error_event_matches_contract_shape(
|
||
client, db, seeded_kb, monkeypatch: pytest.MonkeyPatch
|
||
) -> None:
|
||
"""The SSE error event (PLAN §4) is exactly ``{type, detail}`` — the
|
||
client's loading-feedback state machine (phase 06) keys off this shape
|
||
to flip to the error state and re-enable the send button.
|
||
``llm_retries=0`` keeps this a single-attempt turn: the contract under
|
||
test is the error frame itself, not the phase-67 retry loop."""
|
||
broken = FakeRagLLM(embed_error=EmbeddingError("embeddings endpoint down"))
|
||
live = get_settings()
|
||
monkeypatch.setattr(
|
||
chat_api, "get_settings", lambda: _retry_settings(live, llm_retries=0)
|
||
)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: broken
|
||
try:
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert len(frames) == 1
|
||
event = frames[0]
|
||
assert set(event.keys()) == {"type", "detail"}
|
||
assert event["type"] == "error"
|
||
assert isinstance(event["detail"], str) and event["detail"]
|
||
|
||
|
||
def test_chat_db_down_returns_503_json(client, monkeypatch) -> None:
|
||
monkeypatch.setattr(chat_api, "db_available", lambda: False)
|
||
r = client.post("/api/chat", json={"message": "hello"})
|
||
assert r.status_code == 503
|
||
assert "offline" in r.json()["detail"]
|
||
|
||
|
||
def test_chat_retrieval_failure_yields_error_event(client, db, seeded_kb, monkeypatch) -> None:
|
||
def boom(*_a: Any, **_k: Any) -> Any:
|
||
raise RuntimeError("db exploded")
|
||
|
||
monkeypatch.setattr(chat_api, "retrieve", boom)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: seeded_kb
|
||
try:
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert [f["type"] for f in frames] == ["error"]
|
||
assert "offline mid-question" in frames[0]["detail"]
|
||
assert db.scalars(select(QueryLog)).all() == []
|
||
|
||
|
||
class _BrokenCommitSession:
|
||
"""Pass-through session whose ``commit()`` raises (query_log failure)."""
|
||
|
||
def __init__(self, real: Any) -> None:
|
||
self._real = real
|
||
|
||
def commit(self) -> None:
|
||
raise RuntimeError("query_log commit failed")
|
||
|
||
def __getattr__(self, name: str) -> Any:
|
||
return getattr(self._real, name)
|
||
|
||
|
||
def test_chat_query_log_failure_still_sends_done(client, db, seeded_kb: FakeRagLLM) -> None:
|
||
from app.db import SessionLocal
|
||
|
||
def broken_db():
|
||
real = SessionLocal()
|
||
try:
|
||
yield _BrokenCommitSession(real)
|
||
finally:
|
||
real.close()
|
||
|
||
fastapi_app.dependency_overrides[chat_api.get_db] = broken_db
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: seeded_kb
|
||
try:
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
# The answer (and the done event) went out despite the log-row failure.
|
||
assert [f["type"] for f in frames if f["type"] == "delta"]
|
||
assert frames[-1]["type"] == "done"
|
||
assert frames[-1]["deflected"] is False
|
||
|
||
|
||
# ---------- phase 37: agent document tools on grounded turns ----------
|
||
|
||
|
||
def test_grounded_turn_streams_tool_frames_and_cites_read_doc(
|
||
client, db, seeded_kb: FakeRagLLM, caplog: pytest.LogCaptureFixture
|
||
) -> None:
|
||
"""(a) Grounded turn with tool calls: the event sequence is
|
||
``thinking?/tool/tool/delta…/done``; ``done.sources`` and the
|
||
``query_log`` row include the read document (deduped, order
|
||
preserved); the per-turn log line carries ``tool_calls=2``.
|
||
Phase 45: the agent loop keeps offering the tools for the whole
|
||
turn — the round cap (not per-tool budgets) is the bound."""
|
||
scripted = FakeRagLLM(
|
||
tool_script=[
|
||
[
|
||
StreamPiece("thinking", "Let me list what is indexed…"),
|
||
ToolCallPiece(id="call_1", name="ls", arguments={}),
|
||
],
|
||
[
|
||
ToolCallPiece(
|
||
id="call_2",
|
||
name="read",
|
||
arguments={"path": "docs/homelab/backups.md"},
|
||
)
|
||
],
|
||
# the answer request still carries the tools (2 rounds < the
|
||
# default cap of 10); the fake's tool_script is exhausted, so
|
||
# it falls back to the thinking + answer stream
|
||
]
|
||
)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: scripted
|
||
try:
|
||
caplog.set_level(logging.INFO, logger="app.chat")
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
types = [f["type"] for f in frames]
|
||
assert types[0] == "thinking"
|
||
assert types[1] == "tool" and types[2] == "tool" # the two executed calls
|
||
assert "error" not in types
|
||
assert types[3:-1] == ["delta"] * (len(types) - 4) # deltas, then done last
|
||
assert frames[-1]["type"] == "done"
|
||
|
||
list_frame, read_frame = frames[1], frames[2]
|
||
assert set(list_frame) == {"type", "name", "argument"}
|
||
assert list_frame["name"] == "ls"
|
||
assert list_frame["argument"] is None # no ``path`` argument was passed
|
||
assert set(read_frame) == {"type", "name", "argument"}
|
||
assert read_frame["name"] == "read"
|
||
# Phase 70: the frame's argument is the single string the model
|
||
# passed — the combined ``source/path``.
|
||
assert read_frame["argument"] == "docs/homelab/backups.md"
|
||
|
||
deltas = [f for f in frames if f["type"] == "delta"]
|
||
assert len(deltas) >= 2 # genuinely streamed
|
||
assert "".join(d["text"] for d in deltas) == scripted.answer
|
||
|
||
done = frames[-1]
|
||
assert done["deflected"] is False
|
||
# done.sources = the retrieval docs + the read doc, deduped, order kept.
|
||
sources = [(s["source"], s["path"]) for s in done["sources"]]
|
||
assert sources[-1] == ("docs", "homelab/backups.md") # the read doc is cited
|
||
assert ("docs", "homelab/kubernetes.md") in sources # …after the retrieval docs
|
||
assert len(sources) == len(set(sources)) # deduped by (source, path)
|
||
assert done["sources"][-1]["title"] == "Backup Strategy"
|
||
|
||
# Phase 45: the tools stay offered on every request — the round cap
|
||
# (not spent budgets) bounds the loop, and the model answered while
|
||
# still being offered the tools (2 rounds < default cap 10).
|
||
assert len(scripted.seen_messages) == 3
|
||
assert scripted.seen_tools[0] == AGENT_TOOLS
|
||
assert scripted.seen_tools[1] == AGENT_TOOLS
|
||
assert scripted.seen_tools[2] == AGENT_TOOLS
|
||
|
||
# The query_log row carries the same combined source list.
|
||
(row,) = db.scalars(select(QueryLog)).all()
|
||
assert row.deflected is False
|
||
assert "docs/homelab/kubernetes.md" in row.sources
|
||
assert row.sources.endswith(", docs/homelab/backups.md") # the read doc, last
|
||
|
||
# The required per-turn log line (PLAN §9 extension) counts both calls
|
||
# and lists the combined sources (retrieval + read).
|
||
lines = [r.getMessage() for r in caplog.records if "question=" in r.getMessage()]
|
||
assert lines and "tool_calls=2" in lines[-1]
|
||
assert "'docs/homelab/kubernetes.md'" in lines[-1]
|
||
assert "'docs/homelab/backups.md'" in lines[-1]
|
||
assert "scaffold_stripped=0" in lines[-1] # phase 71: uniform clean-turn field
|
||
|
||
|
||
def test_grounded_turn_streams_grep_tool_frames(
|
||
client, db, seeded_kb: FakeRagLLM
|
||
) -> None:
|
||
"""Phase 68 (renamed ``grep`` in phase 70): a scripted ``grep`` call
|
||
streams as ``{type: "tool", name: "grep", argument: <pattern>}`` —
|
||
the raw pattern is the frame's ``argument`` (the UI renders the
|
||
"searching for" line from it). A non-string pattern — a model error
|
||
the backend refuses — yields ``argument: null``. A grep adds no
|
||
source: ``done.sources`` stays the retrieval docs (locked A5)."""
|
||
scripted = FakeRagLLM(
|
||
tool_script=[
|
||
[
|
||
ToolCallPiece(id="call_1", name="grep", arguments={"pattern": "Cilium"}),
|
||
],
|
||
[
|
||
ToolCallPiece(
|
||
id="call_2",
|
||
name="grep",
|
||
arguments={"pattern": 42}, # model error: non-string
|
||
),
|
||
],
|
||
# the answer request still carries the tools (2 rounds < the
|
||
# default cap of 10); the fake's tool_script is exhausted, so
|
||
# it falls back to the thinking + answer stream
|
||
]
|
||
)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: scripted
|
||
try:
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
types = [f["type"] for f in frames]
|
||
assert "error" not in types
|
||
assert len(scripted.seen_tools) == 3 # both greps executed (rounds)
|
||
|
||
tool_frames = [f for f in frames if f["type"] == "tool"]
|
||
assert len(tool_frames) == 2
|
||
first, second = tool_frames
|
||
assert set(first) == {"type", "name", "argument"}
|
||
assert first["name"] == "grep"
|
||
assert first["argument"] == "Cilium" # the raw pattern
|
||
assert set(second) == {"type", "name", "argument"}
|
||
assert second["name"] == "grep"
|
||
assert second["argument"] is None # the non-string pattern → null
|
||
|
||
# The greps still answered: deltas, then a grounded done.
|
||
assert [f for f in frames if f["type"] == "delta"]
|
||
done = frames[-1]
|
||
assert done["type"] == "done" and done["deflected"] is False
|
||
paths = [s["path"] for s in done["sources"]]
|
||
assert "homelab/kubernetes.md" in paths # retrieval docs, unchanged
|
||
assert "homelab/backups.md" not in paths # a grep adds no source
|
||
|
||
|
||
def test_tool_frames_carry_the_model_arguments_regardless_of_execution(
|
||
client, db, seeded_kb: FakeRagLLM, caplog: pytest.LogCaptureFixture
|
||
) -> None:
|
||
"""Phase 70 pins: the frame's ``argument`` is the single string
|
||
argument the model passed — an ``ls`` frame carries the scope when
|
||
the model gave one (null only when it is omitted, pinned above) —
|
||
and frame emission is execution-independent: a rejected call (an
|
||
unknown ``read`` path) still streams its frame with the model's
|
||
argument as-is. The rejected read adds no source (``done.sources``
|
||
stays the retrieval docs), and rejected calls count nothing
|
||
(``tool_calls=1`` — only the executed scoped ``ls``)."""
|
||
# The scoped ``ls`` source-name check reads the registry — insert a
|
||
# row resolving to ``docs`` (the fixture's source name) and delete
|
||
# it again afterwards.
|
||
src = GitSource(url="https://github.com/reese/docs.git", kind="git")
|
||
db.add(src)
|
||
db.commit()
|
||
try:
|
||
scripted = FakeRagLLM(
|
||
tool_script=[
|
||
[ToolCallPiece(id="call_1", name="ls", arguments={"path": "docs"})],
|
||
[
|
||
ToolCallPiece(
|
||
id="call_2", name="read", arguments={"path": "docs/homelab/nope.md"}
|
||
)
|
||
],
|
||
]
|
||
)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: scripted
|
||
try:
|
||
caplog.set_level(logging.INFO, logger="app.chat")
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
finally:
|
||
db.execute(delete(GitSource).where(GitSource.id == src.id))
|
||
db.commit()
|
||
|
||
types = [f["type"] for f in frames]
|
||
assert "error" not in types
|
||
# Both calls stream a frame — the rejected read included.
|
||
tool_frames = [f for f in frames if f["type"] == "tool"]
|
||
assert len(tool_frames) == 2
|
||
ls_frame, read_frame = tool_frames
|
||
assert set(ls_frame) == {"type", "name", "argument"}
|
||
assert ls_frame["name"] == "ls"
|
||
assert ls_frame["argument"] == "docs" # the model's scope, as passed
|
||
assert set(read_frame) == {"type", "name", "argument"}
|
||
assert read_frame["name"] == "read"
|
||
# The rejected call's frame still carries the model's argument as
|
||
# passed — frame emission is execution-independent.
|
||
assert read_frame["argument"] == "docs/homelab/nope.md"
|
||
|
||
# The rejected read adds no source — done.sources stays retrieval.
|
||
done = frames[-1]
|
||
assert done["type"] == "done" and done["deflected"] is False
|
||
paths = [s["path"] for s in done["sources"]]
|
||
assert "homelab/kubernetes.md" in paths # retrieval docs, unchanged
|
||
assert "homelab/nope.md" not in paths # the refused read cites nothing
|
||
|
||
# The rejected call counts nothing — only the executed scoped ls.
|
||
lines = [r.getMessage() for r in caplog.records if "question=" in r.getMessage()]
|
||
assert lines and "tool_calls=1" in lines[-1]
|
||
|
||
|
||
def test_deflected_turn_stays_byte_identical_without_tools(
|
||
client, db, seeded_kb: FakeRagLLM
|
||
) -> None:
|
||
"""(b) Deflected turn: the agent loop never runs — no ``tool``
|
||
frames, and the frame sequence is byte-identical to the plain fake's
|
||
direct-``chat_stream`` output even for a fake scripted to call tools
|
||
(its script is never consumed). The LLM was called once, without a
|
||
``tools`` key."""
|
||
scripted = FakeRagLLM(
|
||
tool_script=[
|
||
[ToolCallPiece(id="call_1", name="ls", arguments={})],
|
||
[
|
||
ToolCallPiece(
|
||
id="call_2",
|
||
name="read",
|
||
arguments={"path": "docs/homelab/backups.md"},
|
||
)
|
||
],
|
||
[StreamPiece("content", "never used — the agent never runs")],
|
||
]
|
||
)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: seeded_kb
|
||
try:
|
||
_, _, baseline = _stream_chat(client, OFF_TOPIC)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: scripted
|
||
try:
|
||
_, _, frames = _stream_chat(client, OFF_TOPIC)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert frames == baseline # byte-identical to the direct path
|
||
assert not any(f["type"] == "tool" for f in frames)
|
||
assert frames[-1]["type"] == "done" and frames[-1]["deflected"] is True
|
||
assert len(scripted.tool_script) == 3 # the script was never consumed
|
||
assert len(scripted.seen_messages) == 1
|
||
assert scripted.seen_tools == [None] # one request, no tools key
|
||
|
||
# The read document never sneaks into the deflected turn's record.
|
||
(row,) = [
|
||
r
|
||
for r in db.scalars(select(QueryLog)).all()
|
||
if r.question == OFF_TOPIC
|
||
][-1:]
|
||
assert row.deflected is True
|
||
assert "backups.md" not in row.sources
|
||
|
||
|
||
def test_zero_max_rounds_reproduce_pre_phase_single_request(
|
||
client,
|
||
db,
|
||
seeded_kb: FakeRagLLM,
|
||
monkeypatch: pytest.MonkeyPatch,
|
||
caplog: pytest.LogCaptureFixture,
|
||
) -> None:
|
||
"""(c) ``BOR_AGENT_MAX_ROUNDS=0``: no ``tool`` frames, exactly one
|
||
request **without** a ``tools`` key (the pre-phase request shape),
|
||
``done.sources`` unchanged, and ``tool_calls=0`` in the log line —
|
||
the kill switch survives the phase-45 budget removal."""
|
||
scripted = FakeRagLLM(
|
||
tool_script=[
|
||
[ToolCallPiece(id="call_1", name="ls", arguments={})],
|
||
[
|
||
ToolCallPiece(
|
||
id="call_2",
|
||
name="read",
|
||
arguments={"path": "docs/homelab/backups.md"},
|
||
)
|
||
],
|
||
]
|
||
)
|
||
live = get_settings()
|
||
monkeypatch.setattr(
|
||
chat_api,
|
||
"get_settings",
|
||
lambda: Settings(
|
||
_env_file=None, # pyright: ignore[reportCallIssue]
|
||
relevance_threshold=live.relevance_threshold,
|
||
agent_max_rounds=0,
|
||
),
|
||
)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: scripted
|
||
try:
|
||
caplog.set_level(logging.INFO, logger="app.chat")
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert not any(f["type"] == "tool" for f in frames)
|
||
assert "error" not in [f["type"] for f in frames]
|
||
done = frames[-1]
|
||
assert done["type"] == "done"
|
||
assert done["deflected"] is False
|
||
paths = [s["path"] for s in done["sources"]]
|
||
assert "homelab/kubernetes.md" in paths # retrieval docs, unchanged
|
||
assert "homelab/backups.md" not in paths # nothing was read
|
||
|
||
# Exactly one request, and it carried no ``tools`` key at all — the
|
||
# scripted tool calls were never even offered a chance.
|
||
assert len(scripted.seen_messages) == 1
|
||
assert scripted.seen_tools == [None]
|
||
assert len(scripted.tool_script) == 2 # never consumed
|
||
|
||
(row,) = db.scalars(select(QueryLog)).all()
|
||
assert "docs/homelab/kubernetes.md" in row.sources
|
||
assert "backups.md" not in row.sources
|
||
lines = [r.getMessage() for r in caplog.records if "question=" in r.getMessage()]
|
||
assert lines and "tool_calls=0" in lines[-1]
|
||
assert "scaffold_stripped=0" in lines[-1] # phase 71: uniform clean-turn field
|
||
|
||
|
||
def test_tool_execution_db_failure_yields_error_event(
|
||
client, db, seeded_kb: FakeRagLLM, monkeypatch: pytest.MonkeyPatch
|
||
) -> None:
|
||
"""A tool call that hits a dead DB mid-stream gets the same structured
|
||
``error`` event as the pre-stream retrieval path — never a severed
|
||
stream (the "never stale" contract, PLAN §7.4)."""
|
||
scripted = FakeRagLLM(
|
||
tool_script=[[ToolCallPiece(id="call_1", name="ls", arguments={})]]
|
||
)
|
||
|
||
def boom(*_a: Any, **_k: Any) -> Any:
|
||
raise RuntimeError("db exploded mid tool call")
|
||
|
||
monkeypatch.setattr(agent, "list_catalog", boom)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: scripted
|
||
try:
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
# The ``tool`` frame went out first (the model requested the call);
|
||
# the failed execution ends the turn with the structured error event.
|
||
assert [f["type"] for f in frames] == ["tool", "error"]
|
||
assert frames[0]["name"] == "ls"
|
||
assert "offline mid-question" in frames[1]["detail"]
|
||
assert db.scalars(select(QueryLog)).all() == [] # no row for a failed turn
|
||
|
||
|
||
# ---------- phase 67: LLM retries before the first token ----------
|
||
|
||
|
||
def _retry_settings(live: Settings, **overrides: Any) -> Settings:
|
||
"""Settings for the retry tests: the live (mock-calibrated) threshold
|
||
plus the phase-67 knobs, with a ZERO delay so the suite never sleeps.
|
||
(The 5 s default is unit-pinned in ``tests/unit/test_config.py``.)"""
|
||
kwargs: dict[str, Any] = {
|
||
"relevance_threshold": live.relevance_threshold,
|
||
"llm_retry_delay": 0.0,
|
||
}
|
||
kwargs.update(overrides)
|
||
return Settings(_env_file=None, **kwargs) # pyright: ignore[reportCallIssue]
|
||
|
||
|
||
def test_embed_failure_retries_then_turn_completes(
|
||
client,
|
||
db,
|
||
seeded_kb: FakeRagLLM,
|
||
monkeypatch: pytest.MonkeyPatch,
|
||
caplog: pytest.LogCaptureFixture,
|
||
) -> None:
|
||
"""A dead-then-recovered embeddings endpoint: one SSE ``retry`` frame
|
||
(the attempt about to be tried, 1-based) ahead of the normal answer
|
||
frames; the turn completes and the per-turn log line counts the
|
||
retry (``retries=1``)."""
|
||
flaky = FakeRagLLM(embed_fail_count=1)
|
||
live = get_settings()
|
||
monkeypatch.setattr(
|
||
chat_api, "get_settings", lambda: _retry_settings(live, llm_retries=1)
|
||
)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: flaky
|
||
try:
|
||
caplog.set_level(logging.INFO, logger="app.chat")
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert frames[0] == {"type": "retry", "attempt": 2, "max_attempts": 2}
|
||
assert not any(f["type"] == "error" for f in frames)
|
||
deltas = [f for f in frames if f["type"] == "delta"]
|
||
assert len(deltas) >= 2
|
||
assert "".join(d["text"] for d in deltas) == flaky.answer
|
||
assert frames[-1]["type"] == "done"
|
||
lines = [r.getMessage() for r in caplog.records if "question=" in r.getMessage()]
|
||
assert lines and "retries=1" in lines[-1]
|
||
assert "scaffold_stripped=0" in lines[-1] # phase 71: uniform clean-turn field
|
||
|
||
|
||
def test_embed_failure_exhausts_retries_then_terminal_error(
|
||
client, db, seeded_kb: FakeRagLLM, monkeypatch: pytest.MonkeyPatch
|
||
) -> None:
|
||
"""A dead embeddings endpoint (``llm_retries=2`` → 3 attempts): one
|
||
``retry`` frame per restart (attempts 2 and 3 of 3), then the
|
||
EXISTING terminal error frame — the copy is unchanged, no query_log
|
||
row."""
|
||
dead = FakeRagLLM(embed_fail_count=99) # every attempt fails
|
||
live = get_settings()
|
||
monkeypatch.setattr(
|
||
chat_api, "get_settings", lambda: _retry_settings(live, llm_retries=2)
|
||
)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: dead
|
||
try:
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert [f["type"] for f in frames] == ["retry", "retry", "error"]
|
||
assert [f["attempt"] for f in frames if f["type"] == "retry"] == [2, 3]
|
||
assert all(f["max_attempts"] == 3 for f in frames if f["type"] == "retry")
|
||
assert "embedding" in frames[-1]["detail"]
|
||
assert db.scalars(select(QueryLog)).all() == []
|
||
|
||
|
||
def test_deflected_stream_retries_before_the_first_piece(
|
||
client,
|
||
db,
|
||
seeded_kb: FakeRagLLM,
|
||
monkeypatch: pytest.MonkeyPatch,
|
||
caplog: pytest.LogCaptureFixture,
|
||
) -> None:
|
||
"""Deflected answer stream: the first attempt dies before any piece,
|
||
the restart streams — a ``retry`` frame ahead of the deltas, the
|
||
request restarted with the same messages (no tools key), and the
|
||
per-turn log line counts the retry."""
|
||
flaky = FakeRagLLM(stream_fail_count=1)
|
||
live = get_settings()
|
||
monkeypatch.setattr(
|
||
chat_api, "get_settings", lambda: _retry_settings(live, llm_retries=2)
|
||
)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: flaky
|
||
try:
|
||
caplog.set_level(logging.INFO, logger="app.chat")
|
||
_, _, frames = _stream_chat(client, OFF_TOPIC)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert frames[0] == {"type": "retry", "attempt": 2, "max_attempts": 3}
|
||
rest = frames[1:]
|
||
assert all(f["type"] in ("delta", "done") for f in rest)
|
||
assert "".join(f["text"] for f in rest if f["type"] == "delta") == flaky.answer
|
||
assert rest[-1]["type"] == "done" and rest[-1]["deflected"] is True
|
||
assert len(flaky.seen_messages) == 2 # the request was restarted
|
||
assert flaky.seen_tools == [None, None] # …byte-identical (no tools key)
|
||
lines = [r.getMessage() for r in caplog.records if "question=" in r.getMessage()]
|
||
assert lines and "retries=1" in lines[-1]
|
||
assert "scaffold_stripped=0" in lines[-1] # phase 71: uniform clean-turn field
|
||
|
||
|
||
def test_deflected_stream_failure_after_first_frame_is_terminal(
|
||
client, db, seeded_kb: FakeRagLLM, monkeypatch: pytest.MonkeyPatch
|
||
) -> None:
|
||
"""Locked A2: a stream failure AFTER the first output frame is
|
||
terminal — no ``retry`` frame, the existing error copy, no row (a
|
||
partial answer is never redone)."""
|
||
broken = FakeRagLLM(fail_mid_stream=True)
|
||
live = get_settings()
|
||
monkeypatch.setattr(
|
||
chat_api, "get_settings", lambda: _retry_settings(live, llm_retries=3)
|
||
)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: broken
|
||
try:
|
||
_, _, frames = _stream_chat(client, OFF_TOPIC)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert [f["type"] for f in frames] == ["delta", "error"]
|
||
assert not any(f["type"] == "retry" for f in frames)
|
||
assert "dropped the connection" in frames[1]["detail"]
|
||
assert db.scalars(select(QueryLog)).all() == []
|
||
|
||
|
||
def test_zero_retries_keep_the_pre_phase_wire_shape(
|
||
client, db, seeded_kb: FakeRagLLM, monkeypatch: pytest.MonkeyPatch
|
||
) -> None:
|
||
"""The ``BOR_LLM_RETRIES=0`` kill switch: one attempt, the existing
|
||
terminal error frame, no ``retry`` frames — the pre-phase-67
|
||
byte-identical wire shape."""
|
||
broken = FakeRagLLM(embed_error=EmbeddingError("embeddings endpoint down"))
|
||
live = get_settings()
|
||
monkeypatch.setattr(
|
||
chat_api, "get_settings", lambda: _retry_settings(live, llm_retries=0)
|
||
)
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: broken
|
||
try:
|
||
_, _, frames = _stream_chat(client, QUESTION)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert len(frames) == 1
|
||
assert frames[0]["type"] == "error"
|
||
assert "embedding" in frames[0]["detail"]
|
||
assert not any(f["type"] == "retry" for f in frames)
|
||
|
||
|
||
# ---------- phase 71: the deterministic scaffolding guardrail (deflected path) ----------
|
||
|
||
|
||
def _scaffold_span() -> str:
|
||
"""The raw span from the 2026-09-03 incident (the E2E mock's trigger,
|
||
task 05) — a complete span the filter strips in full."""
|
||
return "<|tool_call_start|>[read(path='/homelab/backup-notes.md')]<|tool_call_end|>"
|
||
|
||
|
||
def test_deflected_scaffolding_only_reply_recovers_once(
|
||
client,
|
||
db,
|
||
seeded_kb: FakeRagLLM,
|
||
monkeypatch: pytest.MonkeyPatch,
|
||
caplog: pytest.LogCaptureFixture,
|
||
) -> None:
|
||
"""(a) A deflected reply that is pure scaffolding streams ZERO delta
|
||
frames (no raw tokens on the wire); the one bounded recovery —
|
||
``tools=None``, the correction folded into the single system prompt,
|
||
a fresh filter, the same retry budget — streams the clean answer, the
|
||
turn settles with ``done`` + a query_log row, and the log line counts
|
||
the stripped chars (the recovery does not bump ``retries=N``)."""
|
||
span = _scaffold_span()
|
||
clean = "I don't have that on hand — try one of the chips below?"
|
||
flaky = FakeRagLLM(answer_sequence=[span, clean])
|
||
live = get_settings()
|
||
monkeypatch.setattr(chat_api, "get_settings", lambda: _retry_settings(live))
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: flaky
|
||
try:
|
||
caplog.set_level(logging.INFO, logger="app.chat")
|
||
_, _, frames = _stream_chat(client, OFF_TOPIC)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
# The raw tokens never reach the wire; the deltas reassemble to the
|
||
# clean recovery answer.
|
||
assert span not in json.dumps(frames)
|
||
deltas = [f for f in frames if f["type"] == "delta"]
|
||
assert "".join(d["text"] for d in deltas) == clean
|
||
assert not any(f["type"] == "error" for f in frames)
|
||
done = frames[-1]
|
||
assert done["type"] == "done" and done["deflected"] is True
|
||
|
||
# Exactly two requests: the stripped round + the one recovery, both
|
||
# without a tools key…
|
||
assert len(flaky.seen_messages) == 2
|
||
assert flaky.seen_tools == [None, None]
|
||
# …and the recovery's system prompt is the ORIGINAL deflected prompt
|
||
# with the correction folded in (a single system message — the user
|
||
# message stays last).
|
||
recovered = flaky.seen_messages[1]
|
||
assert len(recovered) == 2
|
||
assert recovered[1] == {"role": "user", "content": OFF_TOPIC}
|
||
first_system = flaky.seen_messages[0][0]["content"]
|
||
assert "DEFLECT_MODE" in first_system
|
||
assert recovered[0] == {
|
||
"role": "system",
|
||
"content": first_system + "\n" + agent.CORRECTION_INSTRUCTION,
|
||
}
|
||
|
||
# The turn settled normally: one query_log row…
|
||
(row,) = db.scalars(select(QueryLog)).all()
|
||
assert row.deflected is True
|
||
# …and the log line carries the summed stripped count (the clean
|
||
# recovery stripped nothing) with retries untouched.
|
||
lines = [r.getMessage() for r in caplog.records if "question=" in r.getMessage()]
|
||
assert lines and f"scaffold_stripped={len(span)}" in lines[-1]
|
||
assert "retries=0" in lines[-1] # the recovery is not an endpoint-retry
|
||
|
||
|
||
def test_deflected_scaffolding_twice_settles_malformed(
|
||
client, db, seeded_kb: FakeRagLLM, monkeypatch: pytest.MonkeyPatch
|
||
) -> None:
|
||
"""(b) The recovery answer is scaffolding again — a second empty
|
||
reply is terminal: the DEDICATED error frame (the exact copy), no
|
||
``done``, no query_log row — byte-for-byte today's ``LLMError``
|
||
terminal shape — and no third request (at most one recovery per
|
||
turn)."""
|
||
span = _scaffold_span()
|
||
dead = FakeRagLLM(answer_sequence=[span, span])
|
||
live = get_settings()
|
||
monkeypatch.setattr(chat_api, "get_settings", lambda: _retry_settings(live))
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: dead
|
||
try:
|
||
_, _, frames = _stream_chat(client, OFF_TOPIC)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert [f["type"] for f in frames] == ["error"]
|
||
assert frames[0]["detail"] == (
|
||
"The model returned a malformed reply — please try again."
|
||
)
|
||
assert set(frames[0].keys()) == {"type", "detail"} # the contract shape
|
||
assert span not in json.dumps(frames)
|
||
assert not any(f["type"] == "done" for f in frames)
|
||
assert db.scalars(select(QueryLog)).all() == []
|
||
assert len(dead.seen_messages) == 2 # round + one recovery — no more
|
||
assert dead.seen_tools == [None, None]
|
||
|
||
|
||
def test_deflected_mixed_scaffolding_and_content_needs_no_recovery(
|
||
client,
|
||
db,
|
||
seeded_kb: FakeRagLLM,
|
||
monkeypatch: pytest.MonkeyPatch,
|
||
caplog: pytest.LogCaptureFixture,
|
||
) -> None:
|
||
"""(c) Real visible content plus scaffolding: the clean remainder
|
||
streams (no raw tokens on the wire), NO recovery runs, and the log
|
||
line counts the stripped span (``scaffold_stripped>0``)."""
|
||
span = _scaffold_span()
|
||
mixed = f"I don't have that. {span} Try the chips below?"
|
||
flaky = FakeRagLLM(answer=mixed)
|
||
live = get_settings()
|
||
monkeypatch.setattr(chat_api, "get_settings", lambda: _retry_settings(live))
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: flaky
|
||
try:
|
||
caplog.set_level(logging.INFO, logger="app.chat")
|
||
_, _, frames = _stream_chat(client, OFF_TOPIC)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert span not in json.dumps(frames)
|
||
deltas = [f for f in frames if f["type"] == "delta"]
|
||
assert "".join(d["text"] for d in deltas) == "I don't have that. Try the chips below?"
|
||
assert not any(f["type"] == "error" for f in frames)
|
||
assert frames[-1]["type"] == "done"
|
||
assert len(flaky.seen_messages) == 1 # the clean content stands — no recovery
|
||
lines = [r.getMessage() for r in caplog.records if "question=" in r.getMessage()]
|
||
assert lines and f"scaffold_stripped={len(span)}" in lines[-1]
|
||
|
||
|
||
# ---------- phase 74: client-provided history (with prior thinking) ----------
|
||
|
||
#: The client's prior turns (oldest first — the ``bor.chat.v1`` record
|
||
#: minus the current question): two user turns, two brain turns, the
|
||
#: FIRST brain turn carrying a prior thinking block (A4) and the second
|
||
#: not (the ``reasoning_content`` gate has both shapes on one request).
|
||
HISTORY: list[dict[str, Any]] = [
|
||
{"who": "user", "text": "What port does Tailscale run on?"},
|
||
{
|
||
"who": "brain",
|
||
"text": "Tailscale runs on 41641/udp.",
|
||
"thinking": "The Tailscale wire protocol uses 41641/udp.",
|
||
},
|
||
{"who": "user", "text": "And the subnet router?"},
|
||
{"who": "brain", "text": "The subnet router shares the same port."},
|
||
]
|
||
|
||
#: What :func:`app.rag.prompts.history_to_messages` must produce for
|
||
#: :data:`HISTORY` — chronological, ``reasoning_content`` ONLY on the
|
||
#: turn that had thinking.
|
||
HISTORY_MESSAGES: list[dict[str, Any]] = [
|
||
{"role": "user", "content": "What port does Tailscale run on?"},
|
||
{
|
||
"role": "assistant",
|
||
"content": "Tailscale runs on 41641/udp.",
|
||
"reasoning_content": "The Tailscale wire protocol uses 41641/udp.",
|
||
},
|
||
{"role": "user", "content": "And the subnet router?"},
|
||
{"role": "assistant", "content": "The subnet router shares the same port."},
|
||
]
|
||
|
||
|
||
def _stream_chat_with_history(
|
||
client: TestClient, message: str, history: list[dict[str, Any]]
|
||
) -> list[dict[str, Any]]:
|
||
"""Phase 74 variant of :func:`_stream_chat`: sends ``history`` (the
|
||
client's prior turns, oldest first) in the request body."""
|
||
with client.stream(
|
||
"POST", "/api/chat", json={"message": message, "history": history}
|
||
) as r:
|
||
assert r.status_code == 200
|
||
assert r.headers["content-type"].startswith("text/event-stream")
|
||
buf = ""
|
||
frames: list[dict[str, Any]] = []
|
||
for part in r.iter_text():
|
||
buf += part
|
||
while "\n\n" in buf:
|
||
frame, buf = buf.split("\n\n", 1)
|
||
frame = frame.strip()
|
||
if frame.startswith("data:"):
|
||
frames.append(json.loads(frame.removeprefix("data:").strip()))
|
||
assert buf.strip() == "", "stream must end on a frame boundary"
|
||
return frames
|
||
|
||
|
||
def test_deflected_turn_forwards_history_with_prior_thinking(
|
||
client,
|
||
db,
|
||
seeded_kb: FakeRagLLM,
|
||
caplog: pytest.LogCaptureFixture,
|
||
) -> None:
|
||
"""A DEFLECTED turn sends the prior turns — chronological, with the
|
||
prior brain turn's thinking as ``reasoning_content`` — between the
|
||
LOW system prompt and the current question (A2/A3/A4); the per-turn
|
||
log line carries ``history_msgs=4``."""
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: seeded_kb
|
||
try:
|
||
caplog.set_level(logging.INFO, logger="app.chat")
|
||
frames = _stream_chat_with_history(client, OFF_TOPIC, HISTORY)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert frames[-1]["type"] == "done"
|
||
assert frames[-1]["deflected"] is True
|
||
assert len(seeded_kb.seen_messages) == 1
|
||
(messages,) = seeded_kb.seen_messages
|
||
assert messages[0]["role"] == "system"
|
||
assert "DEFLECT_MODE" in messages[0]["content"] # the LOW prompt
|
||
assert messages[1:-1] == HISTORY_MESSAGES # the prior turns, chronological
|
||
assert messages[-1] == {"role": "user", "content": OFF_TOPIC}
|
||
lines = [r.getMessage() for r in caplog.records if "question=" in r.getMessage()]
|
||
assert lines and "history_msgs=4" in lines[-1]
|
||
|
||
|
||
def test_grounded_turn_forwards_history_through_the_agent(
|
||
client,
|
||
db,
|
||
seeded_kb: FakeRagLLM,
|
||
caplog: pytest.LogCaptureFixture,
|
||
) -> None:
|
||
"""The GROUNDED agent branch receives the same block: its first
|
||
request is ``[HIGH system, *history, current question]`` (the tool
|
||
rounds then append to that same list); ``history_msgs=4``."""
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: seeded_kb
|
||
try:
|
||
caplog.set_level(logging.INFO, logger="app.chat")
|
||
frames = _stream_chat_with_history(client, QUESTION, HISTORY)
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert frames[-1]["type"] == "done"
|
||
assert frames[-1]["deflected"] is False
|
||
assert len(seeded_kb.seen_messages) == 1 # the canned answer ends the loop
|
||
(messages,) = seeded_kb.seen_messages
|
||
assert messages[0]["role"] == "system"
|
||
assert "<tools>" in messages[0]["content"] # the HIGH prompt
|
||
assert messages[1:-1] == HISTORY_MESSAGES
|
||
assert messages[-1] == {"role": "user", "content": QUESTION}
|
||
lines = [r.getMessage() for r in caplog.records if "question=" in r.getMessage()]
|
||
assert lines and "history_msgs=4" in lines[-1]
|
||
|
||
|
||
def test_request_without_history_sends_exactly_system_and_user(
|
||
client,
|
||
db,
|
||
seeded_kb: FakeRagLLM,
|
||
caplog: pytest.LogCaptureFixture,
|
||
) -> None:
|
||
"""Byte-identical pin (A2): a request WITHOUT ``history`` sends
|
||
exactly the two-message ``[system, user]`` request on BOTH branches
|
||
(deflected + grounded), and the per-turn log line carries
|
||
``history_msgs=0``."""
|
||
fastapi_app.dependency_overrides[chat_api.get_llm] = lambda: seeded_kb
|
||
try:
|
||
caplog.set_level(logging.INFO, logger="app.chat")
|
||
_stream_chat(client, OFF_TOPIC) # deflected branch
|
||
_stream_chat(client, QUESTION) # grounded branch
|
||
finally:
|
||
fastapi_app.dependency_overrides.clear()
|
||
|
||
assert len(seeded_kb.seen_messages) == 2
|
||
for messages in seeded_kb.seen_messages:
|
||
assert [m["role"] for m in messages] == ["system", "user"]
|
||
assert seeded_kb.seen_messages[0][1] == {"role": "user", "content": OFF_TOPIC}
|
||
assert seeded_kb.seen_messages[1][1] == {"role": "user", "content": QUESTION}
|
||
lines = [r.getMessage() for r in caplog.records if "question=" in r.getMessage()]
|
||
assert len(lines) == 2
|
||
assert all("history_msgs=0" in line for line in lines)
|
||
|
||
|
||
def test_history_rejects_unknown_who(client, db) -> None:
|
||
"""Schema pin: ``who`` is a ``Literal["user", "brain"]`` — anything
|
||
else is a 422 at the boundary (the same trust model as the saved-
|
||
chat ``ChatMessage``)."""
|
||
r = client.post(
|
||
"/api/chat",
|
||
json={"message": "hi", "history": [{"who": "alien", "text": "x"}]},
|
||
)
|
||
assert r.status_code == 422
|
||
|
||
|
||
def test_history_rejects_more_than_100_entries(client, db) -> None:
|
||
"""Schema pin: the DoS sanity ceiling is 100 turns — 101 is a 422
|
||
(the config budgets do the real trimming; this only keeps a
|
||
pathological body from wasting the mapper's work)."""
|
||
r = client.post(
|
||
"/api/chat",
|
||
json={
|
||
"message": "hi",
|
||
"history": [{"who": "user", "text": f"q{i}"} for i in range(101)],
|
||
},
|
||
)
|
||
assert r.status_code == 422
|