pptx/malformed-content-types-missing

Metadata

XPath assertions

No XPath assertions declared.

Render assertions

No render assertions declared.

Generator source

scripts/gen_malformed_content_types_missing_pptx.py

#!/usr/bin/env python3
"""Generate ``fixtures/pptx/malformed-content-types-missing.pptx``.

Known-good one-slide presentation with ``[Content_Types].xml``
removed. python-pptx must raise a typed opc-level exception; a bare
``KeyError`` from the underlying zip reader is a library bug.
"""

from __future__ import annotations

import datetime as _dt
import sys
import tempfile
from pathlib import Path

from pptx import Presentation

sys.path.insert(0, str(Path(__file__).resolve().parent))
from _malformed_common import rewrite_zip

_REPO_ROOT = Path(__file__).resolve().parent.parent
_OUT = _REPO_ROOT / "fixtures" / "pptx" / "malformed-content-types-missing.pptx"


def _drop(name: str, data: bytes) -> bytes | None:
    if name == "[Content_Types].xml":
        return None
    return data


def main() -> int:
    _OUT.parent.mkdir(parents=True, exist_ok=True)
    with tempfile.NamedTemporaryFile(suffix=".pptx", delete=False) as tmp:
        good = Path(tmp.name)
    try:
        prs = Presentation()
        slide = prs.slides.add_slide(prs.slide_layouts[5])
        slide.shapes.title.text = "content-types-missing slide"
        prs.save(good, zip_date_time=_dt.datetime(1980, 1, 1, 0, 0, 0))
        rewrite_zip(good, _OUT, edit=_drop)
    finally:
        good.unlink(missing_ok=True)
    print(_OUT)
    return 0


if __name__ == "__main__":
    raise SystemExit(main())

Manifest (expanded)

{
  "id": "pptx/malformed-content-types-missing",
  "title": "Malformed input: [Content_Types].xml missing",
  "format": "pptx",
  "category": "malformed-recovery",
  "summary": "A pptx archive whose [Content_Types].xml part has been removed. The library must raise a typed opc-level exception; a bare KeyError leaking from the zip layer is a library bug.",
  "roles": [
    "authoring"
  ],
  "spec": {
    "source": "ecma-376-5-part-2",
    "clause": "10.1.2.2",
    "element": "Types",
    "notes": "Same mandate as docx/malformed-content-types-missing — part 2 clause 10.1.2.2."
  },
  "fixtures": {
    "machine": "pptx/malformed-content-types-missing"
  },
  "generator": {
    "python": "scripts/gen_malformed_content_types_missing_pptx.py"
  },
  "behavior_assertions": [
    {
      "id": "raises-typed-exception",
      "kind": "library_raises",
      "library": "python-pptx",
      "method": "pptx.Presentation",
      "args": [
        "{fixture_path}"
      ],
      "expected_exception": [
        "PackageNotFoundError",
        "OpcError",
        "KeyError"
      ],
      "forbidden_exception": "KeyError",
      "description": "Must raise a typed opc-level exception. A bare KeyError is explicitly forbidden (that's what python-pptx leaks today — a latent bug)."
    }
  ]
}