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brain-of-reese/tests/unit/test_retriever.py
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phase: 113_source_chip_quality
All gates green — no defects found; this pass was verification only.

**Phase 113 final verification pass — report**

- Verified (no code changes needed): `select_documents_tiered` cited/related tiering + `select_documents` wrapper, `TurnPlan.related_docs`, `ChatDoneEvent.related` (additive, old payloads parse), `appendRelated` UI row (`.related-doc`, never `.source-chip`), done-frame + restore-path wiring, two settings with validators, `.env.example` entries
- `uv run pytest --cov=app --cov-report=term-missing` → 2422 passed, app/ coverage **99%** (>90% gate)
- `uv run pytest tests/e2e/test_source_chip_quality.py -v --no-cov` (isolated) → 2 passed
- Regression E2E `test_retrieval_quality.py` + `test_honest_deflection.py` + `test_chat_rag.py` + `test_sources_midstream_bug.py` → 17 passed
- `uv run ruff check . && uv run pyright` → clean (0 errors); `bash .agents/validate.sh` → "validation OK"

Completion criteria:
1. Single-doc question → exactly one `.source-chip` (E2E): ✅ passed
2. Weak 2nd doc only in de-emphasized related row, never `.source-chip` (unit + E2E): ✅ passed
3. Deflected turn → zero citation chips, weak hits in related row: ✅ passed
4. Full suite green, coverage >90%, isolated E2E green, lint/types clean: ✅ passed
5. `--no-gpg-sign` commit + phase dir move: left to harness per pass rules (task files already in `complete/`)

No deviations. Next pending phase: `114_embed_question_length`.
2026-09-15 03:11:05 -04:00

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"""Unit: retriever — ordering and dedup, no context cap (A7 revised) (fake rows).
The SQL side of :func:`app.rag.retriever.retrieve` is exercised by the
chat integration tests against real Postgres; the pure mapping logic in
:func:`select_documents` is tested here with in-memory rows.
"""
from __future__ import annotations
import uuid
from types import SimpleNamespace
import pytest
from app.models import Document
from app.rag.retriever import (
TRUNCATION_MARKER,
RetrievedChunk,
select_documents,
select_documents_tiered,
)
def _doc(path: str, content: str, source: str = "Homelab", title: str | None = None) -> Document:
return Document(
id=uuid.uuid4(),
source=source,
path=path,
full_path=f"/tmp/{path}",
title=title or path,
content=content,
content_hash="0" * 64,
)
def _chunk(doc: Document, score: float, position: int = 0) -> RetrievedChunk:
return RetrievedChunk(
chunk_id=uuid.uuid4(),
position=position,
content=doc.content[:40],
score=score,
document=doc,
)
def test_ranks_by_best_chunk_score_not_first_hit() -> None:
"""A doc whose *later* chunk scores highest must still rank first."""
a = _doc("a.md", "A" * 50)
b = _doc("b.md", "B" * 50)
c = _doc("c.md", "C" * 50)
chunks = [
_chunk(a, 0.4, position=0), # a's weak chunk comes first
_chunk(b, 0.8),
_chunk(a, 0.9, position=2), # a's best chunk comes last
_chunk(c, 0.5),
]
docs = select_documents(chunks, n=3)
assert [d.path for d in docs] == ["a.md", "b.md", "c.md"]
def test_dedups_to_one_document_per_hit_set() -> None:
a = _doc("a.md", "A" * 50)
chunks = [_chunk(a, 0.2), _chunk(a, 0.7), _chunk(a, 0.5)]
docs = select_documents(chunks, n=2)
assert len(docs) == 1
assert docs[0] is a
def test_caps_at_n_documents() -> None:
docs_in = [_doc(f"d{i}.md", "X" * 20) for i in range(4)]
chunks = [_chunk(d, 0.5 - 0.1 * i) for i, d in enumerate(docs_in)]
out = select_documents(chunks, n=2)
assert [d.path for d in out] == ["d0.md", "d1.md"]
def test_content_never_truncated_even_past_old_budget() -> None:
"""Whole documents, never truncated (A7 revised, owner permission 2026-08-24).
Two documents of 20 000 + 15 000 chars — 35 000 combined, well past
the old 24 000 context budget — come back with content
**byte-identical** to the originals, and the truncation marker is
absent from both.
"""
big = _doc("big.md", "B" * 20_000)
small = _doc("small.md", "S" * 15_000)
chunks = [_chunk(big, 0.9), _chunk(small, 0.6)]
out = select_documents(chunks, n=2)
assert [d.path for d in out] == ["big.md", "small.md"]
assert out[0].content == "B" * 20_000
assert out[1].content == "S" * 15_000
assert TRUNCATION_MARKER not in out[0].content
assert TRUNCATION_MARKER not in out[1].content
def test_empty_hits_yield_no_documents() -> None:
assert select_documents([], n=2) == []
# ---------------------------------------------------------------------------
# Phase 113 — the usefulness bar: cited vs related tiers
# ---------------------------------------------------------------------------
def _cos_chunk(doc: Document, score: float, cosine: float, position: int = 0) -> RetrievedChunk:
"""A candidate with *score* (fused rank key) and *cosine* (gate input) decoupled."""
return RetrievedChunk(
chunk_id=uuid.uuid4(),
position=position,
content=doc.content[:40],
score=score,
document=doc,
cosine=cosine,
)
def test_tiered_both_clear_floor_both_cited() -> None:
"""Both docs clear the bar → both cited, nothing related."""
a = _doc("a.md", "A" * 50)
b = _doc("b.md", "B" * 50)
chunks = [_cos_chunk(a, 0.9, 0.50), _cos_chunk(b, 0.8, 0.40)]
cited, related = select_documents_tiered(chunks, n=2, floor=0.35, related_cap=2)
assert [d.path for d in cited] == ["a.md", "b.md"]
assert related == []
def test_tiered_strong_plus_weak_one_cited_one_related() -> None:
"""The recurring incident shape: a strong 1st doc and a weak 2nd — the
weak doc loses its citation slot and lands in the related tier."""
a = _doc("a.md", "A" * 50)
b = _doc("b.md", "B" * 50)
chunks = [_cos_chunk(a, 0.9, 0.50), _cos_chunk(b, 0.8, 0.10)]
cited, related = select_documents_tiered(chunks, n=2, floor=0.35, related_cap=2)
assert [d.path for d in cited] == ["a.md"]
assert [d.path for d in related] == ["b.md"]
def test_tiered_both_weak_zero_cited_all_related() -> None:
"""Neither doc clears the bar → no citation slot at all (the bar
filters, it never backfills), the weak hits become the related tier."""
a = _doc("a.md", "A" * 50)
b = _doc("b.md", "B" * 50)
chunks = [_cos_chunk(a, 0.9, 0.20), _cos_chunk(b, 0.8, 0.15)]
cited, related = select_documents_tiered(chunks, n=2, floor=0.35, related_cap=2)
assert cited == []
assert [d.path for d in related] == ["a.md", "b.md"] # rank order kept
def test_tiered_related_cap_respected() -> None:
"""The related tier is capped (related_max_docs) in rank order."""
docs_in = [_doc(f"d{i}.md", "X" * 20) for i in range(3)]
chunks = [_cos_chunk(d, 0.9 - 0.1 * i, 0.10 - 0.02 * i) for i, d in enumerate(docs_in)]
cited, related = select_documents_tiered(chunks, n=2, floor=0.35, related_cap=2)
assert cited == []
assert [d.path for d in related] == ["d0.md", "d1.md"]
def test_tiered_n_is_ceiling_not_quota() -> None:
"""A single strong doc yields ONE cited doc — the bar never pads the
cited tier up to ``n`` (LOCKED A2). And docs that clear the bar but
exceed the ceiling fall through to the related tier (the next docs in
rank order, never overlapping cited)."""
only = _doc("only.md", "O" * 50)
cited, related = select_documents_tiered(
[_cos_chunk(only, 0.9, 0.80)], n=2, floor=0.35, related_cap=2
)
assert [d.path for d in cited] == ["only.md"]
assert related == []
docs_in = [_doc(f"d{i}.md", "X" * 20) for i in range(4)]
chunks = [_cos_chunk(d, 0.9 - 0.1 * i, 0.8 - 0.05 * i) for i, d in enumerate(docs_in)]
cited, related = select_documents_tiered(chunks, n=2, floor=0.35, related_cap=2)
assert [d.path for d in cited] == ["d0.md", "d1.md"] # the ceiling
assert [d.path for d in related] == ["d2.md", "d3.md"] # the next in rank order
def test_tiered_bar_skips_weak_rank_one() -> None:
"""A weak rank-1 doc does not consume a citation slot: the next-ranked
bar-clearing docs take it (the bar filters, it does not backfill)."""
w = _doc("w.md", "W" * 50)
s1 = _doc("s1.md", "1" * 50)
s2 = _doc("s2.md", "2" * 50)
chunks = [
_cos_chunk(w, 0.9, 0.20), # rank 1 — below the bar
_cos_chunk(s1, 0.8, 0.90),
_cos_chunk(s2, 0.7, 0.80),
]
cited, related = select_documents_tiered(chunks, n=2, floor=0.5, related_cap=2)
assert [d.path for d in cited] == ["s1.md", "s2.md"]
assert [d.path for d in related] == ["w.md"]
def test_tiered_tracks_best_chunk_cosine_across_a_docs_chunks() -> None:
"""The bar is on the doc's BEST hit-chunk cosine — a weak first chunk
(rank 1) does not sink a doc whose later chunk is vector-strong."""
a = _doc("a.md", "A" * 50)
b = _doc("b.md", "B" * 50)
chunks = [
_cos_chunk(a, 0.9, 0.10, position=0), # a's weak chunk ranks first
_cos_chunk(a, 0.5, 0.90, position=2), # a's strong chunk
_cos_chunk(b, 0.4, 0.0), # lexical-only b
]
cited, related = select_documents_tiered(chunks, n=2, floor=0.35, related_cap=2)
assert [d.path for d in cited] == ["a.md"]
assert [d.path for d in related] == ["b.md"]
def test_tiered_lexical_only_hit_goes_to_related_above_zero_floor() -> None:
"""A lexical-only doc (cosine 0.0 by construction) is vector-unsupported
by definition: above a zero floor it never earns a cited slot (LOCKED A2)."""
a = _doc("a.md", "A" * 50)
b = _doc("b.md", "B" * 50)
lexical_only = RetrievedChunk(
chunk_id=uuid.uuid4(),
position=0,
content="X" * 10,
score=0.9, # top fused rank (the FTS hit)
document=a,
cosine=0.0, # no vector rank — lexical-only
fts_hit=True,
)
chunks = [lexical_only, _cos_chunk(b, 0.8, 0.5)]
cited, related = select_documents_tiered(chunks, n=2, floor=0.35, related_cap=2)
assert [d.path for d in cited] == ["b.md"]
assert [d.path for d in related] == ["a.md"]
def test_tiered_floor_zero_is_no_bar() -> None:
"""A zero floor admits every scored document — lexical-only (cosine
0.0) and weak alike — so the bar can be disabled per deployment."""
a = _doc("a.md", "A" * 50)
b = _doc("b.md", "B" * 50)
chunks = [_cos_chunk(a, 0.9, 0.0), _cos_chunk(b, 0.8, 0.1)]
cited, related = select_documents_tiered(chunks, n=2, floor=0.0, related_cap=2)
assert [d.path for d in cited] == ["a.md", "b.md"]
assert related == []
def test_tiered_empty_chunks_yield_empty_tiers() -> None:
assert select_documents_tiered([], n=2, floor=0.35, related_cap=2) == ([], [])
def test_select_documents_wrapper_is_legacy_tiering() -> None:
"""The wrapper (floor 0.0, cap 0) is the legacy "any score, top-N"
selection — byte-identical for the shapes the existing callers see:
rank order, dedupe, multi-chunk docs, ties, lexical-only hits."""
docs_in = [_doc(f"d{i}.md", "X" * 20) for i in range(5)]
chunks = [
_chunk(docs_in[0], 0.5), # cosine 0.0 (lexical-only)
_cos_chunk(docs_in[0], 0.9, 0.4, position=1),
_chunk(docs_in[1], 0.8),
_cos_chunk(docs_in[1], 0.8, 0.2, position=1), # fused tie across docs
_cos_chunk(docs_in[2], 0.7, 0.0),
_cos_chunk(docs_in[3], 0.6, 0.1),
_chunk(docs_in[4], 0.1),
]
for n in (1, 2, 3, 10):
assert select_documents(chunks, n=n) == select_documents_tiered(
chunks, n, 0.0, 0
)[0]
# ---------------------------------------------------------------------------
# Hybrid retrieval (A7): RRF fusion + lexical tsquery
# ---------------------------------------------------------------------------
from app.rag.retriever import fuse, lexical_tsquery # noqa: E402
def _rc(
doc_path: str, cosine: float = 0.0, fts_hit: bool = False, position: int = 0,
is_summary: bool = False,
) -> RetrievedChunk:
return RetrievedChunk(
chunk_id=uuid.uuid4(),
position=position,
content="x" * 20,
score=0.0,
document=_doc(doc_path, "x" * 20),
cosine=cosine,
fts_hit=fts_hit,
is_summary=is_summary,
)
def test_lexical_tsquery_tokens_lowercased_deduped_in_order() -> None:
assert lexical_tsquery("How did I Install GITLAB gitlab?") == "how | did | i | install | gitlab"
def test_lexical_tsquery_punctuation_and_umlauts_ignored() -> None:
assert lexical_tsquery("c3-r00t? -- what's up!") == "c3 | r00t | what | s | up"
def test_lexical_tsquery_pure_symbols_return_none() -> None:
assert lexical_tsquery("??? ???") is None
assert lexical_tsquery("") is None
def test_lexical_tsquery_stopwords_left_to_postgres() -> None:
# lexical_tsquery passes raw tokens through; Postgres's to_tsquery
# lexing drops the stopwords (verified against real PG in
# test_retrieve_empty_kb / integration tests).
assert lexical_tsquery("how do i") == "how | do | i"
def test_lexical_tsquery_dotted_tokens_kept_whole() -> None:
"""The 2026-09-05 incident: the default parser lexes dotted words
as ONE lexeme ("llama.cpp" → 'llama.cpp', "Qwen 3.8" → '3.8'), so
the query carries them whole — split tokens (llama | cpp) can never
match the document side."""
assert lexical_tsquery(
"What are the correct llama.cpp arguments for Qwen 3.8?"
) == "what | are | the | correct | llama.cpp | arguments | for | qwen | 3.8"
# The dash still splits (only dots group): ai | internal.network.
assert lexical_tsquery("how did I set up ai-internal.network?") == (
"how | did | i | set | up | ai | internal.network"
)
def test_fuse_combines_both_lists_for_double_hits() -> None:
v1 = _rc("a.md", cosine=0.9)
v2 = _rc("b.md", cosine=0.5)
l1 = _rc("a.md", cosine=0.1) # same chunk id -> matched in place
a_id = v1.chunk_id
l1.chunk_id = a_id
out = fuse([v1, v2], [l1], k=60)
by_id = {rc.chunk_id: rc for rc in out}
# a: 1/61 (vector rank 1) + 1/61 (lexical rank 1); b: 1/62 only.
assert by_id[a_id].score == pytest.approx(2 / 61)
assert by_id[a_id].fts_hit is True
assert by_id[v2.chunk_id].score == pytest.approx(1 / 62)
assert by_id[v2.chunk_id].fts_hit is False
assert [rc.chunk_id for rc in out] == [a_id, v2.chunk_id]
def test_fuse_lexical_only_chunks_enter_with_zero_cosine() -> None:
vector = [_rc("a.md", cosine=0.8)]
lexical = [_rc("b.md", cosine=0.0, fts_hit=True)]
out = fuse(vector, lexical, k=60)
assert len(out) == 2
b = next(rc for rc in out if rc.document.path == "b.md")
assert b.cosine == 0.0
assert b.fts_hit is True
# Still ranked by its (only) RRF term.
assert b.score == pytest.approx(1 / 61)
def test_fuse_orders_by_score_then_cosine_then_path() -> None:
# Two chunks share an RRF score (both rank 1 in different lists):
# the higher-cosine one must sort first.
hi = _rc("z.md", cosine=0.9)
lo = _rc("a.md", cosine=0.2)
out = fuse([hi], [lo], k=60)
assert [rc.document.path for rc in out] == ["z.md", "a.md"]
# Equal score AND cosine -> path order.
p1 = _rc("b.md", cosine=0.5)
p2 = _rc("a.md", cosine=0.5)
out = fuse([p1], [p2], k=60)
assert [rc.document.path for rc in out] == ["a.md", "b.md"]
# Equal score, cosine, path -> position order.
s1 = _rc("a.md", cosine=0.5, position=1)
s2 = _rc("a.md", cosine=0.5, position=0)
out = fuse([s1], [s2], k=60)
assert [rc.position for rc in out] == [0, 1]
def test_fuse_rejects_nonpositive_k() -> None:
with pytest.raises(ValueError):
fuse([], [], k=0)
with pytest.raises(ValueError):
fuse([], [], k=-1)
def test_fuse_empty_lists() -> None:
assert fuse([], [], k=60) == []
# ---------------------------------------------------------------------------
# Phase 30: is_summary survives both candidate lists and the fusion
# ---------------------------------------------------------------------------
from app.models import Chunk # noqa: E402
from app.rag.retriever import ( # noqa: E402
NAME_HIT_LIMIT,
_lexical_candidates,
_name_hit_chunks,
_normalize_name,
_vector_candidates,
name_hit_tokens,
)
class _FakeResult:
"""Stands in for SQLAlchemy's RowMapping result (``.all()`` only)."""
def __init__(self, rows: list) -> None:
self._rows = rows
def all(self) -> list:
return self._rows
class _FakeSession:
"""Returns canned rows from ``execute`` without touching Postgres.
One list of rows (legacy form) is returned for EVERY call; several
lists (one per successive ``execute``) model a query sequence — the
name-hit lexical path (2026-09-05) issues the document-projection
query and, when hits exist, the LATERAL chunk query, BEFORE the FTS
query.
"""
def __init__(self, *rowsets: list) -> None:
if len(rowsets) == 1 and not (
rowsets[0] and isinstance(rowsets[0][0], list)
):
rowsets = (rowsets[0],) # the single-rowset legacy form
self._rowsets = rowsets
self._call = 0
self.statements: list = []
def execute(self, stmt, params: dict | None = None) -> _FakeResult:
self.statements.append((stmt, params))
rows = self._rowsets[min(self._call, len(self._rowsets) - 1)]
self._call += 1
return _FakeResult(rows)
def _chunk_row(is_summary: bool) -> Chunk:
doc = _doc("summary-src.yaml", "RAW_YAML_CONTENT")
return Chunk(
id=uuid.uuid4(),
document_id=doc.id,
position=-1, # the summary chunk's position (phase 30)
content="Summary text",
is_summary=is_summary,
)
def test_vector_candidates_carry_is_summary_flag() -> None:
"""The vector list copies ``Chunk.is_summary`` onto each candidate."""
doc = _doc("summary-src.yaml", "RAW_YAML_CONTENT")
summary = _chunk_row(is_summary=True)
ordinary = _chunk_row(is_summary=False)
ordinary.position = 0
ordinary.content = "ordinary content"
rows = [
(summary, 0.123456, doc),
(ordinary, 0.2, doc),
]
out = _vector_candidates(_FakeSession(rows), [0.0] * 768, limit=5) # pyright: ignore[reportArgumentType]
assert len(out) == 2
by_pos = {rc.position: rc for rc in out}
assert by_pos[-1].is_summary is True # the summary chunk (position −1)
assert by_pos[0].is_summary is False # ordinary content chunk
assert by_pos[-1].cosine == pytest.approx(0.876544) # 1 − distance, still rounded
def test_vector_candidates_default_is_summary_false_for_legacy_chunks() -> None:
"""Pre-phase-30 rows have ``is_summary=false`` — candidates stay False."""
doc = _doc("legacy.md", "LEGACY")
legacy = Chunk(
id=uuid.uuid4(),
document_id=doc.id,
position=0,
content="legacy content",
is_summary=False,
)
out = _vector_candidates(_FakeSession([(legacy, 0.5, doc)]), [0.0] * 768, limit=5) # pyright: ignore[reportArgumentType]
assert out[0].is_summary is False
def _lexical_row(is_summary: bool, doc_path: str) -> object:
"""One row of ``_LEXICAL_SQL`` (attribute access, as SQLAlchemy returns)."""
doc = _doc(doc_path, "DOC_BODY")
return SimpleNamespace(
chunk_id=uuid.uuid4(),
position=-1 if is_summary else 0,
content="summary chunk text" if is_summary else "content chunk text",
doc_id=doc.id,
source=doc.source,
path=doc.path,
full_path=doc.full_path,
title=doc.title,
doc_content=doc.content,
content_hash=doc.content_hash,
indexed_at=None,
created_at=None,
is_summary=is_summary,
rank=0.33,
)
def test_lexical_candidates_carry_is_summary_flag() -> None:
"""The lexical list reads ``c.is_summary`` from the raw row.
The question carries no digit-bearing name token (no bare, no
numeric-join), so the name-hit path issues NO queries at all — the
single FTS rowset answers the only (FTS) call, and the list is the
plain FTS rows: the pre-name-hit behavior, unchanged.
"""
rows = [_lexical_row(True, "summary-src.yaml"), _lexical_row(False, "other.md")]
out = _lexical_candidates(
_FakeSession(rows), "how do i configure the thing", limit=10 # pyright: ignore[reportArgumentType]
)
assert len(out) == 2
by_path = {rc.document.path: rc for rc in out}
assert by_path["summary-src.yaml"].is_summary is True
assert by_path["summary-src.yaml"].position == -1
assert by_path["other.md"].is_summary is False
assert all(rc.fts_hit is True for rc in out)
def test_fuse_keeps_is_summary_on_double_hit() -> None:
"""A summary chunk in both lists keeps the flag after fusion."""
v1 = _rc("s.yaml", cosine=0.9, is_summary=True)
l1 = _rc("s.yaml", cosine=0.9, is_summary=True) # lexical copy of the same chunk
l1.chunk_id = v1.chunk_id
out = fuse([v1], [l1], k=60)
assert len(out) == 1
assert out[0].is_summary is True
assert out[0].fts_hit is True
assert out[0].score == pytest.approx(2 / 61)
def test_fuse_keeps_is_summary_on_lexical_only_hit() -> None:
"""A summary-only lexical hit (no vector rank) keeps the flag."""
out = fuse([], [_rc("s.yaml", is_summary=True)], k=60)
assert len(out) == 1
assert out[0].is_summary is True
assert out[0].fts_hit is True
assert out[0].cosine == 0.0
def test_fuse_default_is_summary_stays_false_for_legacy_chunks() -> None:
"""Neither list flagged ⇒ fusion never invents a summary flag."""
out = fuse([_rc("a.md", cosine=0.8)], [_rc("b.md")], k=60)
assert len(out) == 2
assert all(rc.is_summary is False for rc in out)
# ---------------------------------------------------------------------------
# Name-hit lexical signal (the 2026-09-05 incident — the versioned-name
# case the default parser lexes incompatibly: "Qwen 3.8" → qwen/3/8 can
# never match a document's qwen3/8/27b tokens)
# ---------------------------------------------------------------------------
INCIDENT_QUESTION = "What are the correct llama.cpp arguments for Qwen 3.8?"
def test_normalize_name() -> None:
assert _normalize_name("Qwen 3.8") == "qwen38"
assert _normalize_name("qwen3.8-27b-juggernaut-vulkan") == "qwen3827bjuggernautvulkan"
assert _normalize_name("Mixed CASE-99") == "mixedcase99"
assert _normalize_name("!!!") == ""
def test_name_hit_tokens_incident_question() -> None:
"""The incident question yields EXACTLY the versioned join
``qwen38`` — the token the document names actually carry. Plain
prose words (``what``, ``llamacpp``, ``arguments``, ``server`` —
no digit) never name-match (the precision guard); the single
digits ("3", "8") and the bare "38" are < 4 chars; the
digit-leading ``38show`` boundary artifact is dropped."""
tokens = name_hit_tokens(INCIDENT_QUESTION)
assert tokens == ["qwen38"]
for absent in ("what", "qwen", "llamacpp", "arguments", "3", "8", "38", "38show", "server"):
assert absent not in tokens
def test_name_hit_tokens_no_digit_question_returns_empty() -> None:
"""A question with no digit-bearing token (bare or joined) yields
no name candidates — prose joins like ``correctllama`` never count."""
assert name_hit_tokens("what is the correct caddy config") == []
assert name_hit_tokens("a e i o u 3 8") == []
def test_name_hit_tokens_bare_digit_bearing_token() -> None:
"""A single written token that carries a digit (``1panel``) is a
name candidate on its own — no join needed."""
tokens = name_hit_tokens("what is my 1panel dashboard setup")
assert tokens == ["1panel"]
def _name_row(doc: Document) -> tuple:
"""One row of the name-hit document projection (catalog order)."""
return (doc.id, doc.source, doc.path, doc.title)
def _name_hit_lateral_row(doc: Document, is_summary: bool = False) -> SimpleNamespace:
"""One row of the name-hit LATERAL chunk query."""
return SimpleNamespace(
doc_id=doc.id,
source=doc.source,
path=doc.path,
full_path=doc.full_path,
title=doc.title,
doc_content=doc.content,
content_hash=doc.content_hash,
indexed_at=None,
created_at=None,
chunk_id=uuid.uuid4(),
position=-1 if is_summary else 0,
content="summary chunk" if is_summary else "content chunk",
is_summary=is_summary,
)
def test_name_hit_chunks_no_tokens_skips_all_queries() -> None:
"""A question with no name tokens issues no queries at all."""
session = _FakeSession([]) # any call would surface a statement
assert _name_hit_chunks(session, "a e i o u 3 8") == [] # pyright: ignore[reportArgumentType]
assert session.statements == []
def test_name_hit_chunks_no_matching_doc_returns_empty() -> None:
"""Name tokens exist but no document name carries one: the
projection runs, the LATERAL fetch does not."""
doc = _doc("quadlets/other.container", "body")
name_rows = [_name_row(doc)]
session = _FakeSession(name_rows, [])
assert _name_hit_chunks(session, INCIDENT_QUESTION) == [] # pyright: ignore[reportArgumentType]
assert len(session.statements) == 1 # projection only — no LATERAL fetch
def test_name_hit_chunks_ranked_by_count_length_catalog() -> None:
"""A two-candidate question (``qwen38`` + ``1panel``): the document
whose name carries BOTH (2 matches, 12 total chars) leads; the two
single-match documents tie on (1, 6) and fall to catalog order
(``dashboards/1panel-notes.md`` before ``quadlets/qwen3.8…``).
Hits carry ``fts_hit=True`` (the A8 gate answers), ``cosine=0.0``,
and the summary flag of their representative chunk."""
both = _doc("dashboards/1panel-qwen3.8.md", "body", title="1Panel Qwen 3.8")
panel = _doc("dashboards/1panel-notes.md", "body")
q38 = _doc("quadlets/qwen3.8-27b-juggernaut-vulkan.container", "body")
name_rows = [_name_row(d) for d in (panel, both, q38)] # catalog order
question = "what are the correct llama.cpp arguments for qwen 3.8 and the 1panel dashboard?"
lateral_rows = [
_name_hit_lateral_row(q38, is_summary=True), # LATERAL may return any order
_name_hit_lateral_row(both),
_name_hit_lateral_row(panel),
]
session = _FakeSession(name_rows, lateral_rows)
out = _name_hit_chunks(session, question) # pyright: ignore[reportArgumentType]
assert [rc.document.path for rc in out] == [
"dashboards/1panel-qwen3.8.md", # 2 matched tokens — leads
"dashboards/1panel-notes.md", # (1, 6) — catalog order
"quadlets/qwen3.8-27b-juggernaut-vulkan.container", # (1, 6) — after
]
assert all(rc.fts_hit is True for rc in out) # the lexical signal
assert all(rc.cosine == 0.0 for rc in out) # no vector rank
assert all(rc.score == 0.0 for rc in out) # fuse fills the score
by_path = {rc.document.path: rc for rc in out}
assert by_path["quadlets/qwen3.8-27b-juggernaut-vulkan.container"].is_summary is True
assert by_path["quadlets/qwen3.8-27b-juggernaut-vulkan.container"].position == -1
assert by_path["dashboards/1panel-notes.md"].is_summary is False
def test_name_hit_chunks_capped_at_limit() -> None:
"""Twelve tied name hits (one matched token each) yield exactly
``NAME_HIT_LIMIT`` of them — catalog order (the deterministic
tie-break)."""
docs = [_doc(f"quadlets/m{i:02d}.container", "body") for i in range(12)]
for d in docs: # give every document a name that carries the token
d.title = "qwen38 model i"
name_rows = [_name_row(d) for d in docs]
# Only the ten winners (catalog order — the deterministic tie-break
# of the twelve identical scores) reach the LATERAL fetch; the fake
# answers with exactly those rows.
lateral_rows = [_name_hit_lateral_row(d) for d in docs[:NAME_HIT_LIMIT]]
session = _FakeSession(name_rows, lateral_rows)
out = _name_hit_chunks(
session, "tell me about the qwen 3.8 models" # pyright: ignore[reportArgumentType]
)
assert len(out) == NAME_HIT_LIMIT
assert [rc.document.path for rc in out] == [f"quadlets/m{i:02d}.container" for i in range(10)]
def test_lexical_candidates_name_hits_lead_and_dedupe_with_fts() -> None:
"""The full lexical list: name hits LEAD (their representative
chunks), the FTS rows follow, and an FTS row sharing the name hit's
chunk id appears exactly once (deduped)."""
q38 = _doc("quadlets/qwen3.8-27b-juggernaut-vulkan.container", "body")
other = _doc("quadlets/qwen38-other.container", "body") # 1 matched token
name_rows = [_name_row(q38), _name_row(other)]
q38_chunk = uuid.uuid4()
def _lateral(doc: Document) -> SimpleNamespace:
row = _name_hit_lateral_row(doc)
if doc is q38:
row.chunk_id = q38_chunk
return row
lateral_rows = [_lateral(q38), _lateral(other)]
fts_rows = [
# an FTS hit on the SAME chunk as the q38 name hit (deduped away)
SimpleNamespace(
chunk_id=q38_chunk, position=1, content="c", doc_id=q38.id,
source=q38.source, path=q38.path, full_path=q38.full_path,
title=q38.title, doc_content=q38.content, content_hash=q38.content_hash,
indexed_at=None, created_at=None, is_summary=False, rank=0.1,
),
# an FTS hit on a different chunk of the OTHER doc (kept)
_lexical_row(False, "quadlets/qwen38-other.container"),
]
session = _FakeSession(name_rows, lateral_rows, fts_rows)
out = _lexical_candidates(session, INCIDENT_QUESTION, limit=10) # pyright: ignore[reportArgumentType]
assert len(out) == 3 # q38 (once), other (name hit), other (FTS chunk)
# Both name hits tie on (1, 6) — catalog order: "qwen3." (ASCII 46)
# sorts before "qwen38" (ASCII 56).
assert out[0].document.path == "quadlets/qwen3.8-27b-juggernaut-vulkan.container"
assert out[1].document.path == "quadlets/qwen38-other.container"
assert out[0].chunk_id == q38_chunk # the name-hit representative row
assert {
rc.chunk_id for rc in out
} == {q38_chunk, fts_rows[1].chunk_id, lateral_rows[1].chunk_id}
assert all(rc.fts_hit is True for rc in out)