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FabledScribe/tests/test_create_tools_disambiguate.py
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bvandeusenandClaude Opus 5 441a1ac31d
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fix(#4016): records that cite each other are created together, and a guessed id is refused
Sessions predicted the ids their next creates would get and wrote them into
plan bodies and reference notes before the records existed. The database
never collides; the sequence is shared by every session and user, so any
concurrent create took the guessed numbers and the references pointed at
someone else's records.

- create_records (new MCP tool) and start_planning(body=, steps=) create
  their records in ONE transaction: insert, flush for the real ids, rewrite
  {{ref:N}} / {{ref:milestone}} placeholders as #id "title", commit. No
  prediction, no waiting, no stub records left behind when a batch fails.
  Ids need not be consecutive and nothing depends on it.
- Every MCP create/update of a note, task or milestone refuses a #N sitting
  just above the highest assigned id (within 50): that can only be a guess.
  Refusal, not warning. Numbers far above the max (PRs, forge issues) pass.
- notes.build_note splits validation out of create_note so the batch
  validates records exactly as a single create does.
- writing-plans and using-scribe say to pass steps up front and never write
  an unassigned id; plugin version minted.

Integration test runs six concurrent batches and checks each resolves its
placeholders to its own records, and that a failing batch writes nothing.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-09-14 08:33:56 -04:00

83 lines
3.5 KiB
Python

"""Every create_* tool says what it is NOT for (#3123).
WHY THIS EXISTS
Scribe's record kinds are reached for interchangeably — a note written where
a task was owed, a rule written where a snippet belonged — and the moment of
choice is the only moment a correction is cheap. The tool docstring IS the
agent-facing contract (rule 119 puts product guidance there and nowhere
else), so a docstring that only documents parameters answers "how do I call
this" while leaving "should I be calling this at all" unasked.
The gap was lopsided before this: `create_rule` and `start_planning` both
carried a real disambiguator, and `create_note` — far and away the
highest-volume surface — carried none. Guidance sat in the rarest tool and
was missing from the most common one.
WHAT THIS PINS, AND WHAT IT DOES NOT
It asserts STRUCTURE, never wording: each create surface must name at least
two sibling surfaces, so a caller who reached for the wrong one is told
where the right one is. Prose stays free to be rewritten — pinning phrasing
would make every improvement a test failure, and a test that punishes
editing is a test that gets deleted.
It cannot tell whether the guidance is any GOOD. It only catches the
regression that actually happens: a docstring rewritten down to its
parameters, with the "is this even the right tool" paragraph quietly gone.
"""
import re
import pytest
from tests.helpers import tool_doc as _doc
# The create surfaces and where they live. `start_planning` is here because
# it is a create in everything but name — it is how a plan comes into being.
_SURFACES = [
("scribe.mcp.tools.notes", "create_note"),
("scribe.mcp.tools.tasks", "create_task"),
("scribe.mcp.tools.tasks", "create_records"),
("scribe.mcp.tools.tasks", "start_planning"),
("scribe.mcp.tools.snippets", "create_snippet"),
("scribe.mcp.tools.processes", "create_process"),
("scribe.mcp.tools.rulebooks", "create_rule"),
("scribe.mcp.tools.rulebooks", "create_project_rule"),
]
# What a caller could have wanted instead. A surface naming two of these has
# pointed somewhere; naming none has left them where they were.
_ALTERNATIVES = [
"create_note", "create_task", "create_rule", "create_project_rule",
"create_snippet", "create_process", "start_planning", "design system",
]
@pytest.mark.parametrize(("module", "name"), _SURFACES)
def test_a_create_surface_names_at_least_two_alternatives(module, name):
"""Reaching for the wrong tool must still put the right one in view."""
doc = _doc(module, name)
named = {
alt for alt in _ALTERNATIVES
if alt != name and re.search(re.escape(alt), doc, re.IGNORECASE)
}
assert len(named) >= 2, (
f"{name}'s docstring names {sorted(named) or 'no'} alternative "
f"surface(s). A caller who reached for it by mistake gets no "
f"correction. Say what belongs elsewhere and why — see create_rule "
f"or create_note for the shape."
)
@pytest.mark.parametrize(("module", "name"), _SURFACES)
def test_a_create_surface_still_documents_its_arguments(module, name):
"""The guard above must not be satisfiable by deleting the parameter docs.
Both halves matter and they pull in opposite directions: a docstring can
be made to pass the disambiguator check by becoming an essay about the
other tools, which would be a worse contract than the one being fixed.
"""
assert "Args:" in _doc(module, name), (
f"{name}'s docstring lost its Args: block — the parameter contract is "
f"what a caller reads to make the call at all."
)