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2026-07-13 12:08:54 +08:00

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Python

"""Spec-compliance tests for :func:`lightrag.sidecar.write_sidecar`.
These assertions are deliberately structural: they encode the contract in
``docs/LightRAGSidecarFormat-zh.md`` so accidental regressions in
``writer.py`` show up before downstream chunker / multimodal consumers see
malformed sidecars.
"""
from __future__ import annotations
import json
from pathlib import Path
import pytest
from lightrag.sidecar import (
AssetSpec,
IRBlock,
IRDoc,
IRDrawing,
IREquation,
IRPosition,
IRTable,
write_sidecar,
)
from lightrag.sidecar import writer as _writer
from lightrag.sidecar.writer import (
_allocate_unique_name,
_materialize_assets,
_safe_asset_filename,
)
def _load_jsonl(path: Path) -> tuple[dict, list[dict]]:
rows: list[dict] = []
meta: dict = {}
with path.open("r", encoding="utf-8") as fh:
for i, line in enumerate(fh):
obj = json.loads(line)
if i == 0:
meta = obj
else:
rows.append(obj)
return meta, rows
@pytest.mark.offline
def test_writer_empty_doc_emits_only_blocks_jsonl(tmp_path: Path) -> None:
"""Document with no blocks: only the meta line, no per-modality JSONs,
no assets dir."""
parsed = tmp_path / "empty.parsed"
ir = IRDoc(
document_name="empty.docx",
document_format="docx",
doc_title="empty",
split_option={},
blocks=[],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-0001", engine="native")
files = {p.name for p in parsed.iterdir()}
assert files == {"empty.blocks.jsonl"}
meta, rows = _load_jsonl(parsed / "empty.blocks.jsonl")
assert meta["type"] == "meta"
assert meta["blocks"] == 0
assert meta["asset_dir"] is False
assert meta["table_file"] is False
assert meta["drawing_file"] is False
assert meta["equation_file"] is False
assert rows == []
@pytest.mark.offline
def test_writer_renders_table_with_inline_body(tmp_path: Path) -> None:
"""Spec §3.3 / fix 1: <table id="..." format="json">rows</table>; NOT
<cite type="table">. Also verifies the table's JSON content appears in
blocks.jsonl content so doc_hash and F/R/V chunkers see it."""
parsed = tmp_path / "t.parsed"
ir = IRDoc(
document_name="t.pdf",
document_format="pdf",
doc_title="t",
split_option={},
blocks=[
IRBlock(
content_template="prefix {{TBL:t1}} suffix",
tables=[
IRTable(
placeholder_key="t1",
rows=[["a", "b"], ["1", "2"]],
num_rows=2,
num_cols=2,
caption="cap",
)
],
)
],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-cafebabe", engine="mineru")
_, rows = _load_jsonl(parsed / "t.blocks.jsonl")
assert len(rows) == 1
body = rows[0]["content"]
assert '<table id="tb-cafebabe-0001" format="json">' in body
assert '[["a", "b"], ["1", "2"]]' in body
assert "</table>" in body
# Negative: no <cite type="table"> placeholder anywhere.
assert "<cite" not in body
@pytest.mark.offline
def test_writer_drawing_path_points_into_assets_dir(tmp_path: Path) -> None:
"""Spec §四 / fix 5: drawing path always points inside *.blocks.assets/.
Asset must be materialized on disk; meta.asset_dir must reflect it.
"""
parsed = tmp_path / "d.parsed"
ir = IRDoc(
document_name="d.pdf",
document_format="pdf",
doc_title="d",
split_option={},
blocks=[
IRBlock(
content_template="see {{IMG:i1}}",
drawings=[
IRDrawing(
placeholder_key="i1",
asset_ref="img1",
fmt="png",
caption="figure 1",
)
],
)
],
assets=[AssetSpec(ref="img1", suggested_name="x.png", source=b"\x89PNG")],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-cafebabe", engine="mineru")
meta, rows = _load_jsonl(parsed / "d.blocks.jsonl")
assert meta["asset_dir"] is True
assert meta["drawing_file"] is True
body = rows[0]["content"]
assert 'path="d.blocks.assets/x.png"' in body
assert (parsed / "d.blocks.assets" / "x.png").read_bytes() == b"\x89PNG"
drawings = json.loads((parsed / "d.drawings.json").read_text())["drawings"]
item = drawings["im-cafebabe-0001"]
assert item["path"] == "d.blocks.assets/x.png"
assert item["caption"] == "figure 1"
assert item["format"] == "png"
@pytest.mark.offline
def test_writer_equation_strips_dollar_wrappers_for_equations_json(
tmp_path: Path,
) -> None:
"""When IREquation.latex carries MinerU's raw ``$$...$$``/``$..$``
wrappers (preserved so blocks.jsonl shows the source verbatim), the
writer must strip them when persisting equations.json content — that
file holds clean latex by contract."""
parsed = tmp_path / "d.parsed"
ir = IRDoc(
document_name="d.pdf",
document_format="pdf",
doc_title="d",
split_option={},
blocks=[
IRBlock(
content_template="see {{EQ:b1}}",
equations=[
IREquation(
placeholder_key="b1",
latex="$$\nE = mc^2\n$$",
is_block=True,
),
],
)
],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-deadbeef", engine="mineru")
# blocks.jsonl: <equation> body preserves the parser's raw form.
body = _load_jsonl(parsed / "d.blocks.jsonl")[1][0]["content"]
assert (
'<equation id="eq-deadbeef-0001" format="latex">$$\nE = mc^2\n$$</equation>'
in body
)
# equations.json: dollar wrappers removed.
equations = json.loads((parsed / "d.equations.json").read_text())["equations"]
assert equations["eq-deadbeef-0001"]["content"] == "E = mc^2"
@pytest.mark.offline
def test_writer_equation_caption_preserved_block_and_inline(
tmp_path: Path,
) -> None:
"""Fix 3 + design decision: <equation caption="..."> on both block and
inline forms; inline does NOT receive an id and does NOT enter
equations.json (spec §6 / §3.3)."""
parsed = tmp_path / "e.parsed"
ir = IRDoc(
document_name="e.pdf",
document_format="pdf",
doc_title="e",
split_option={},
blocks=[
IRBlock(
content_template="block {{EQ:b1}} inline {{EQI:i1}}",
equations=[
IREquation(
placeholder_key="b1",
latex="x^2",
is_block=True,
caption="Eq 1",
),
IREquation(
placeholder_key="i1",
latex="y_n",
is_block=False,
caption="Inline",
),
],
)
],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-cafebabe", engine="mineru")
body = _load_jsonl(parsed / "e.blocks.jsonl")[1][0]["content"]
assert (
'<equation id="eq-cafebabe-0001" format="latex" caption="Eq 1">x^2</equation>'
in body
)
# Inline: no id; caption preserved.
assert '<equation format="latex" caption="Inline">y_n</equation>' in body
equations = json.loads((parsed / "e.equations.json").read_text())["equations"]
# Inline equation should NOT have produced a sidecar entry.
assert list(equations.keys()) == ["eq-cafebabe-0001"]
assert equations["eq-cafebabe-0001"]["caption"] == "Eq 1"
@pytest.mark.offline
def test_writer_propagates_parent_headings_to_sidecar_items(
tmp_path: Path,
) -> None:
"""Spec §4/§5/§6: tables/drawings/equations items carry the owning
block's ``parent_headings`` (the top-down ancestor chain), mirroring the
block's ``parent_headings`` in blocks.jsonl so multimodal analysis sees
the full section context, not just the nearest ``heading``."""
parsed = tmp_path / "ph.parsed"
parents = ["2 Product Description", "2.4 Environmental Adaptability"]
ir = IRDoc(
document_name="ph.pdf",
document_format="pdf",
doc_title="ph",
split_option={},
blocks=[
IRBlock(
content_template="see {{TBL:t1}} {{IMG:i1}} {{EQ:b1}}",
heading="2.4.4 Combined",
parent_headings=parents,
tables=[
IRTable(
placeholder_key="t1",
rows=[["a", "b"]],
num_rows=1,
num_cols=2,
)
],
drawings=[IRDrawing(placeholder_key="i1", asset_ref="img1", fmt="png")],
equations=[
IREquation(placeholder_key="b1", latex="x^2", is_block=True)
],
)
],
assets=[AssetSpec(ref="img1", suggested_name="x.png", source=b"\x89PNG")],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-cafebabe", engine="mineru")
# blocks.jsonl already carries parent_headings; sidecar items must match.
_, rows = _load_jsonl(parsed / "ph.blocks.jsonl")
assert rows[0]["parent_headings"] == parents
tables = json.loads((parsed / "ph.tables.json").read_text())["tables"]
drawings = json.loads((parsed / "ph.drawings.json").read_text())["drawings"]
equations = json.loads((parsed / "ph.equations.json").read_text())["equations"]
assert tables["tb-cafebabe-0001"]["parent_headings"] == parents
assert drawings["im-cafebabe-0001"]["parent_headings"] == parents
assert equations["eq-cafebabe-0001"]["parent_headings"] == parents
@pytest.mark.offline
def test_writer_positions_round_trip_bbox(tmp_path: Path) -> None:
"""Fix 4: positions go through unchanged. bbox type is the mineru path."""
parsed = tmp_path / "p.parsed"
ir = IRDoc(
document_name="p.pdf",
document_format="pdf",
doc_title="p",
split_option={},
blocks=[
IRBlock(
content_template="text",
positions=[
IRPosition(type="bbox", anchor=2, range=[10.0, 20.0, 100.0, 200.0])
],
)
],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-aaaa", engine="mineru")
rows = _load_jsonl(parsed / "p.blocks.jsonl")[1]
assert rows[0]["positions"] == [
{"type": "bbox", "anchor": 2, "range": [10.0, 20.0, 100.0, 200.0]}
]
@pytest.mark.offline
def test_position_origin_to_jsonable_omits_when_none() -> None:
"""Spec §八 per-position origin: ``None`` ⇒ field absent (inherit from
meta ``bbox_attributes.origin``)."""
pos = IRPosition(type="bbox", anchor=1, range=[1.0, 2.0, 3.0, 4.0])
assert "origin" not in pos.to_jsonable()
@pytest.mark.offline
def test_position_origin_to_jsonable_emits_when_set() -> None:
"""Spec §八 per-position origin: explicit value ⇒ override field in JSON."""
pos = IRPosition(
type="bbox", anchor=1, range=[1.0, 2.0, 3.0, 4.0], origin="LEFTTOP"
)
out = pos.to_jsonable()
assert out["origin"] == "LEFTTOP"
@pytest.mark.offline
def test_writer_position_origin_mixed_per_block(tmp_path: Path) -> None:
"""Docling mixed coord_origin scenario: doc-level origin in meta,
per-position override on the minority. Coordinates land verbatim."""
parsed = tmp_path / "mixed.parsed"
ir = IRDoc(
document_name="mixed.pdf",
document_format="pdf",
doc_title="mixed",
split_option={},
blocks=[
IRBlock(
content_template="text",
positions=[
IRPosition(type="bbox", anchor=1, range=[10.0, 20.0, 30.0, 40.0]),
IRPosition(
type="bbox",
anchor=1,
range=[50.0, 60.0, 70.0, 80.0],
origin="LEFTTOP",
),
],
)
],
bbox_attributes={"origin": "LEFTBOTTOM"},
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-bbb1", engine="docling")
meta, rows = _load_jsonl(parsed / "mixed.blocks.jsonl")
assert meta["bbox_attributes"] == {"origin": "LEFTBOTTOM"}
positions = rows[0]["positions"]
assert positions[0] == {
"type": "bbox",
"anchor": 1,
"range": [10.0, 20.0, 30.0, 40.0],
}
assert positions[1] == {
"type": "bbox",
"anchor": 1,
"range": [50.0, 60.0, 70.0, 80.0],
"origin": "LEFTTOP",
}
@pytest.mark.offline
def test_writer_drawing_self_ref_emitted_only_when_nonempty(tmp_path: Path) -> None:
"""Spec §四 ``self_ref``: empty string ⇒ field absent; non-empty ⇒
written verbatim. Keeps MinerU/native sidecars byte-compatible."""
parsed = tmp_path / "sref.parsed"
ir = IRDoc(
document_name="sref.pdf",
document_format="pdf",
doc_title="sref",
split_option={},
blocks=[
IRBlock(
content_template="{{IMG:a}} {{IMG:b}}",
drawings=[
IRDrawing(placeholder_key="a", asset_ref="img_a", fmt="png"),
IRDrawing(
placeholder_key="b",
asset_ref="img_b",
fmt="png",
self_ref="#/pictures/3",
),
],
)
],
assets=[
AssetSpec(ref="img_a", suggested_name="a.png", source=b"\x89PNG"),
AssetSpec(ref="img_b", suggested_name="b.png", source=b"\x89PNG"),
],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-ccc1", engine="docling")
drawings = json.loads((parsed / "sref.drawings.json").read_text("utf-8"))[
"drawings"
]
items = list(drawings.values())
assert "self_ref" not in items[0]
assert items[1]["self_ref"] == "#/pictures/3"
@pytest.mark.offline
def test_writer_table_self_ref_emitted_only_when_nonempty(tmp_path: Path) -> None:
"""Spec §五 ``self_ref``: same omit-when-empty semantics as drawings."""
parsed = tmp_path / "tsref.parsed"
ir = IRDoc(
document_name="tsref.pdf",
document_format="pdf",
doc_title="tsref",
split_option={},
blocks=[
IRBlock(
content_template="{{TBL:a}} {{TBL:b}}",
tables=[
IRTable(placeholder_key="a", rows=[["x"]], num_rows=1, num_cols=1),
IRTable(
placeholder_key="b",
rows=[["y"]],
num_rows=1,
num_cols=1,
self_ref="#/tables/0",
),
],
)
],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-ddd1", engine="docling")
tables = json.loads((parsed / "tsref.tables.json").read_text("utf-8"))["tables"]
items = list(tables.values())
assert "self_ref" not in items[0]
assert items[1]["self_ref"] == "#/tables/0"
@pytest.mark.offline
def test_writer_table_header_serialized_by_format(tmp_path: Path) -> None:
"""``table_header`` is stored in the table's own format: a JSON 2-D array
for JSON tables, a raw ``<thead>`` (verbatim) for HTML tables — and a grid
supplied for an HTML table is rendered to a span-less ``<thead>``."""
parsed = tmp_path / "th.parsed"
html_thead = '<thead><tr><th colspan="2">Group</th></tr></thead>'
ir = IRDoc(
document_name="th.pdf",
document_format="pdf",
doc_title="th",
split_option={},
blocks=[
IRBlock(
content_template="{{TBL:j}} {{TBL:h}} {{TBL:g}}",
tables=[
# JSON table: grid header → JSON 2-D array string.
IRTable(
placeholder_key="j",
rows=[["a", "b"]],
num_rows=1,
num_cols=2,
table_header=[["H1", "H2"]],
),
# HTML table: raw <thead> string → stored verbatim.
IRTable(
placeholder_key="h",
html="<table><tbody><tr><td>a</td><td>b</td></tr></tbody></table>",
num_rows=1,
num_cols=2,
table_header=html_thead,
),
# HTML table: grid header → rendered to a span-less <thead>.
IRTable(
placeholder_key="g",
html="<table><tbody><tr><td>x</td><td>y</td></tr></tbody></table>",
num_rows=1,
num_cols=2,
table_header=[["P", "Q"]],
),
],
)
],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-thh1", engine="mineru")
tables = json.loads((parsed / "th.tables.json").read_text("utf-8"))["tables"]
items = list(tables.values())
json_item = items[0]
assert json_item["format"] == "json"
assert json.loads(json_item["table_header"]) == [["H1", "H2"]]
html_item = items[1]
assert html_item["format"] == "html"
assert html_item["table_header"] == html_thead # verbatim, spans preserved
grid_html_item = items[2]
assert grid_html_item["format"] == "html"
assert (
grid_html_item["table_header"] == "<thead><tr><th>P</th><th>Q</th></tr></thead>"
)
@pytest.mark.offline
def test_writer_equation_self_ref_emitted_only_when_nonempty(tmp_path: Path) -> None:
"""Spec §六 ``self_ref``: block equations carry it; inline equations
never reach equations.json so the field is moot there."""
parsed = tmp_path / "esref.parsed"
ir = IRDoc(
document_name="esref.pdf",
document_format="pdf",
doc_title="esref",
split_option={},
blocks=[
IRBlock(
content_template="{{EQ:a}} {{EQ:b}}",
equations=[
IREquation(placeholder_key="a", latex="a+b", is_block=True),
IREquation(
placeholder_key="b",
latex="c+d",
is_block=True,
self_ref="#/texts/15",
),
],
)
],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-eee1", engine="docling")
equations = json.loads((parsed / "esref.equations.json").read_text("utf-8"))[
"equations"
]
items = list(equations.values())
assert "self_ref" not in items[0]
assert items[1]["self_ref"] == "#/texts/15"
@pytest.mark.offline
def test_writer_id_sequence_is_global_per_kind(tmp_path: Path) -> None:
"""IDs increment across blocks within their own kind: tables ↑,
drawings ↑, equations ↑ — three independent sequences."""
parsed = tmp_path / "s.parsed"
blocks = [
IRBlock(
content_template="a {{TBL:t}} b {{IMG:i}} c",
tables=[IRTable(placeholder_key="t", rows=[["x"]], num_rows=1, num_cols=1)],
drawings=[IRDrawing(placeholder_key="i", asset_ref="a1", fmt="png")],
),
IRBlock(
content_template="d {{EQ:e}} {{TBL:t}}",
tables=[IRTable(placeholder_key="t", rows=[["y"]], num_rows=1, num_cols=1)],
equations=[IREquation(placeholder_key="e", latex="z", is_block=True)],
),
]
ir = IRDoc(
document_name="s.pdf",
document_format="pdf",
doc_title="s",
split_option={},
blocks=blocks,
assets=[AssetSpec(ref="a1", suggested_name="img.png", source=b"x")],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-bbbb", engine="mineru")
tables = json.loads((parsed / "s.tables.json").read_text())["tables"]
assert sorted(tables.keys()) == ["tb-bbbb-0001", "tb-bbbb-0002"]
drawings = json.loads((parsed / "s.drawings.json").read_text())["drawings"]
assert list(drawings.keys()) == ["im-bbbb-0001"]
equations = json.loads((parsed / "s.equations.json").read_text())["equations"]
assert list(equations.keys()) == ["eq-bbbb-0001"]
@pytest.mark.offline
def test_writer_empty_block_dropped(tmp_path: Path) -> None:
"""An IRBlock that strips to empty after placeholder expansion produces
no blocks.jsonl row AND no sidecar items (its in-flight placeholders
are stillborn)."""
parsed = tmp_path / "empty_block.parsed"
ir = IRDoc(
document_name="x.pdf",
document_format="pdf",
doc_title="x",
split_option={},
blocks=[
IRBlock(
content_template=" \n ",
tables=[
IRTable(
placeholder_key="orphan",
rows=[["a"]],
num_rows=1,
num_cols=1,
)
],
),
IRBlock(content_template="real content"),
],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-eee", engine="mineru")
meta, rows = _load_jsonl(parsed / "x.blocks.jsonl")
assert meta["blocks"] == 1
assert len(rows) == 1
assert rows[0]["content"] == "real content"
# No tables.json because the orphan placeholder is dropped.
assert not (parsed / "x.tables.json").exists()
@pytest.mark.offline
def test_writer_asset_name_collision_suffixed(tmp_path: Path) -> None:
"""Two assets with identical suggested_name → second gets ``-2`` stem
suffix; drawings.json paths reflect the actual on-disk names."""
parsed = tmp_path / "c.parsed"
ir = IRDoc(
document_name="c.pdf",
document_format="pdf",
doc_title="c",
split_option={},
blocks=[
IRBlock(
content_template="{{IMG:a}} and {{IMG:b}}",
drawings=[
IRDrawing(placeholder_key="a", asset_ref="r1", fmt="png"),
IRDrawing(placeholder_key="b", asset_ref="r2", fmt="png"),
],
)
],
assets=[
AssetSpec(ref="r1", suggested_name="img.png", source=b"a"),
AssetSpec(ref="r2", suggested_name="img.png", source=b"b"),
],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-1111", engine="mineru")
assets = sorted(p.name for p in (parsed / "c.blocks.assets").iterdir())
assert assets == ["img-2.png", "img.png"]
body = _load_jsonl(parsed / "c.blocks.jsonl")[1][0]["content"]
assert 'path="c.blocks.assets/img.png"' in body
assert 'path="c.blocks.assets/img-2.png"' in body
# --- Path-traversal boundary for sidecar asset materialization (PR #3316) ---
@pytest.mark.offline
@pytest.mark.parametrize(
"suggested, expected",
[
("evil.png", "evil.png"),
("../evil.png", "evil.png"),
("../../etc/passwd", "passwd"),
("..\\evil.png", "evil.png"),
("dir\\sub\\evil.png", "evil.png"),
("a/b/c/evil.png", "evil.png"),
("/abs/evil.png", "evil.png"),
("C:\\Windows\\evil.png", "evil.png"),
(" spaced.png ", "spaced.png"),
],
)
def test_safe_asset_filename_collapses_to_basename(
suggested: str, expected: str
) -> None:
"""Parser-suggested names are reduced to a bare basename regardless of the
path separators they carry, so they can never steer the output path out of
the assets dir. ``\\`` is normalised first so Windows-style payloads on a
POSIX host still collapse rather than surviving as a single filename."""
assert _safe_asset_filename(suggested) == expected
@pytest.mark.offline
@pytest.mark.parametrize("suggested", ["", " ", "..", "...", "/", "\\", "\x00\x1f"])
def test_safe_asset_filename_falls_back_when_empty(suggested: str) -> None:
"""Names that strip down to nothing (pure dots/separators/control chars)
yield the ``asset`` fallback rather than an empty or dot-only filename."""
assert _safe_asset_filename(suggested) == "asset"
@pytest.mark.offline
def test_safe_asset_filename_drops_control_chars() -> None:
"""C0 control chars and DEL are stripped out of the basename so they can't
smuggle separators or break the on-disk name."""
assert _safe_asset_filename("ev\x00i\x7fl\x1f.png") == "evil.png"
@pytest.mark.offline
def test_allocate_unique_name_sanitises_before_suffixing() -> None:
"""``_allocate_unique_name`` sanitises first, then applies collision
suffixes — a traversal payload and a plain basename that collapse to the
same name still get distinct, contained filenames."""
used: set[str] = set()
first = _allocate_unique_name("../evil.png", used)
used.add(first)
second = _allocate_unique_name("dir/evil.png", used)
assert first == "evil.png"
assert second == "evil-2.png"
@pytest.mark.offline
def test_materialize_assets_keeps_traversal_payload_inside_assets_dir(
tmp_path: Path,
) -> None:
"""End-to-end: a parser-controlled ``../`` asset name must not write bytes
outside the assets dir. The byte payload lands at the collapsed basename
inside ``assets_dir`` and the sibling traversal target stays absent."""
assets_dir = tmp_path / "doc.blocks.assets"
out = _materialize_assets(
[AssetSpec(ref="r1", suggested_name="../evil.png", source=b"\x89PNG")],
assets_dir,
)
assert out == {"r1": "evil.png"}
assert (assets_dir / "evil.png").read_bytes() == b"\x89PNG"
# The traversal target one level up must never be created.
assert not (tmp_path / "evil.png").exists()
@pytest.mark.offline
def test_writer_traversal_asset_name_stays_in_assets_dir(tmp_path: Path) -> None:
"""Through the public ``write_sidecar`` path: a drawing whose asset uses a
traversal ``suggested_name`` is materialised inside ``*.blocks.assets/`` and
the rendered/drawing path is the contained basename, with nothing written
to the parent ``parsed`` dir."""
parsed = tmp_path / "trav.parsed"
ir = IRDoc(
document_name="trav.pdf",
document_format="pdf",
doc_title="trav",
split_option={},
blocks=[
IRBlock(
content_template="see {{IMG:i1}}",
drawings=[IRDrawing(placeholder_key="i1", asset_ref="img1", fmt="png")],
)
],
assets=[
AssetSpec(ref="img1", suggested_name="../../evil.png", source=b"\x89PNG")
],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-trav", engine="mineru")
assert (parsed / "trav.blocks.assets" / "evil.png").read_bytes() == b"\x89PNG"
assert not (tmp_path / "evil.png").exists()
assert not (parsed.parent / "evil.png").exists()
body = _load_jsonl(parsed / "trav.blocks.jsonl")[1][0]["content"]
assert 'path="trav.blocks.assets/evil.png"' in body
drawings = json.loads((parsed / "trav.drawings.json").read_text())["drawings"]
assert drawings["im-trav-0001"]["path"] == "trav.blocks.assets/evil.png"
@pytest.mark.offline
def test_materialize_assets_containment_check_skips_escaping_target(
tmp_path: Path, monkeypatch: pytest.MonkeyPatch, caplog: pytest.LogCaptureFixture
) -> None:
"""Defense-in-depth: even if name sanitisation were bypassed and a target
resolved outside the assets dir, the ``relative_to`` containment guard skips
the write (no bytes escape) and the ref is dropped from the output map."""
assets_dir = tmp_path / "doc.blocks.assets"
# Force the allocator to hand back an escaping relative name, simulating a
# sanitisation gap so the second-layer containment check is exercised.
monkeypatch.setattr(_writer, "_allocate_unique_name", lambda *_: "../escape.png")
import logging
monkeypatch.setattr(_writer.logger, "propagate", True)
with caplog.at_level(logging.WARNING, logger=_writer.logger.name):
out = _materialize_assets(
[AssetSpec(ref="r1", suggested_name="ok.png", source=b"\x89PNG")],
assets_dir,
)
assert out == {}
assert not (tmp_path / "escape.png").exists()
assert "unsafe asset target" in caplog.text
@pytest.mark.offline
def test_writer_meta_has_required_spec_fields(tmp_path: Path) -> None:
"""Spec §3.1: meta line contains every required field at fixed names."""
parsed = tmp_path / "m.parsed"
ir = IRDoc(
document_name="m.pdf",
document_format="pdf",
doc_title="title",
split_option={"engine_version": "magic-pdf 1.5.4"},
blocks=[IRBlock(content_template="hello")],
bbox_attributes={"origin": "LEFTTOP", "max": 1000},
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-deadbeef", engine="mineru")
meta, _ = _load_jsonl(parsed / "m.blocks.jsonl")
for k in (
"type",
"format",
"version",
"document_name",
"document_format",
"document_hash",
"table_file",
"equation_file",
"drawing_file",
"asset_dir",
"split_option",
"blocks",
"doc_id",
"parse_engine",
"parse_time",
"doc_title",
):
assert k in meta, f"meta missing field: {k}"
assert meta["document_hash"].startswith("sha256:")
assert meta["parse_engine"] == "mineru"
assert meta["bbox_attributes"] == {"origin": "LEFTTOP", "max": 1000}
assert meta["split_option"] == {"engine_version": "magic-pdf 1.5.4"}
@pytest.mark.offline
def test_writer_sidecar_files_only_when_nonempty(tmp_path: Path) -> None:
"""tables.json / drawings.json / equations.json are NOT written when
the corresponding maps are empty (spec §一 table)."""
parsed = tmp_path / "n.parsed"
ir = IRDoc(
document_name="n.docx",
document_format="docx",
doc_title="n",
split_option={},
blocks=[
IRBlock(
content_template="{{IMG:i}}",
drawings=[IRDrawing(placeholder_key="i", asset_ref="r", fmt="png")],
)
],
assets=[AssetSpec(ref="r", suggested_name="i.png", source=b"x")],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-aaaa", engine="native")
files = {p.name for p in parsed.iterdir() if p.is_file()}
assert "n.drawings.json" in files
assert "n.tables.json" not in files
assert "n.equations.json" not in files
@pytest.mark.offline
def test_writer_blockid_formula_stable(tmp_path: Path) -> None:
"""blockid = md5(doc_id:block_index:heading:content). Same content +
metadata → same blockid."""
parsed_a = tmp_path / "a.parsed"
parsed_b = tmp_path / "b.parsed"
ir = IRDoc(
document_name="x.pdf",
document_format="pdf",
doc_title="x",
split_option={},
blocks=[IRBlock(content_template="abc", heading="H", level=1)],
)
write_sidecar(ir, parsed_dir=parsed_a, doc_id="doc-fixed", engine="mineru")
write_sidecar(ir, parsed_dir=parsed_b, doc_id="doc-fixed", engine="mineru")
rows_a = _load_jsonl(parsed_a / "x.blocks.jsonl")[1]
rows_b = _load_jsonl(parsed_b / "x.blocks.jsonl")[1]
assert rows_a[0]["blockid"] == rows_b[0]["blockid"]
@pytest.mark.offline
def test_writer_strips_control_separators_from_block_content(
tmp_path: Path,
) -> None:
"""C0 control/separator chars (\\x1c-\\x1f FS/GS/RS/US, plus NUL/DEL) in a
block must not survive into blocks.jsonl content (the chunk source) or the
document_hash/merged_text. \\t/\\n inside the block are preserved."""
parsed = tmp_path / "ctrl.parsed"
ir = IRDoc(
document_name="ctrl.pdf",
document_format="pdf",
doc_title="ctrl",
split_option={},
blocks=[
IRBlock(
content_template="a\x1cb\x1dc\x1ed\x1fe\x00\x7f\tkeep\nline",
heading="H",
level=1,
)
],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-ctrl", engine="mineru")
meta, rows = _load_jsonl(parsed / "ctrl.blocks.jsonl")
body = rows[0]["content"]
assert not any(c in body for c in "\x1c\x1d\x1e\x1f\x00\x7f")
# separators removed (no spurious split), whitespace controls kept.
assert body == "abcde\tkeep\nline"
# document_hash is derived from the cleaned merged_text.
assert meta["document_hash"].startswith("sha256:")
@pytest.mark.offline
def test_writer_blockid_unchanged_when_no_control_chars(tmp_path: Path) -> None:
"""The control-char strip is a no-op for clean input: blockid/document_hash
for a control-char-free block stay identical to the pre-change baseline
(guards golden/byte-equivalence snapshots)."""
parsed_clean = tmp_path / "clean.parsed"
parsed_dirty = tmp_path / "dirty.parsed"
clean = IRDoc(
document_name="d.pdf",
document_format="pdf",
doc_title="d",
split_option={},
blocks=[IRBlock(content_template="hello world", heading="H", level=1)],
)
# Same logical content but with separators interspersed; after cleaning the
# rendered text collapses to the clean form, so blockid must match.
dirty = IRDoc(
document_name="d.pdf",
document_format="pdf",
doc_title="d",
split_option={},
blocks=[IRBlock(content_template="hello\x1f world\x1c", heading="H", level=1)],
)
write_sidecar(clean, parsed_dir=parsed_clean, doc_id="doc-x", engine="mineru")
write_sidecar(dirty, parsed_dir=parsed_dirty, doc_id="doc-x", engine="mineru")
meta_c, rows_c = _load_jsonl(parsed_clean / "d.blocks.jsonl")
meta_d, rows_d = _load_jsonl(parsed_dirty / "d.blocks.jsonl")
assert rows_c[0]["content"] == rows_d[0]["content"] == "hello world"
assert rows_c[0]["blockid"] == rows_d[0]["blockid"]
assert meta_c["document_hash"] == meta_d["document_hash"]
@pytest.mark.offline
def test_writer_drops_block_that_is_only_control_chars(tmp_path: Path) -> None:
"""A block whose entire body is control chars + whitespace collapses to
empty after cleaning and is dropped (not emitted as a blank row)."""
parsed = tmp_path / "empty.parsed"
ir = IRDoc(
document_name="e.pdf",
document_format="pdf",
doc_title="e",
split_option={},
blocks=[
IRBlock(content_template="\x1c\x1d \x1f\x1e", heading="H", level=1),
IRBlock(content_template="real body", heading="H2", level=1),
],
)
write_sidecar(ir, parsed_dir=parsed, doc_id="doc-drop", engine="mineru")
_, rows = _load_jsonl(parsed / "e.blocks.jsonl")
assert len(rows) == 1
assert rows[0]["content"] == "real body"