Three fallout bugs from keeping the retried action row alive (906ba42),
plus two long-standing cursor bugs the same investigation turned up.
Retry context leak: the row being regenerated is still attached to the
adventure, so it was replayed as established story and the model wrote a
continuation of the attempt it was meant to replace — the story visibly
blended both takes. It leaked into four places, not one: history replay,
story-card trigger matching, in-scene NPC detection, and the memory-bank
similarity query. Adds a shared context.story_actions(exclude_action_id),
threaded through build_context and retrieve_memories.
Memory holdback: a memory could summarize the just-generated turn; retry
rewrites Action.text but memory_cursor has already advanced, so the memory
was never regenerated and went on describing narration no longer in the
story. settled_story_actions() holds the newest action back one turn —
only the last action is retryable, so that makes it unreachable. The
settled list is always a prefix, so cursors stay valid and nothing is
skipped. The run_post_turn clamp deliberately still uses the full count:
clamping to settled rewinds legacy adventures a step and double-covers an
action.
Cursor bookkeeping: memory_cursor is a position into story_actions() while
Memory.source_* are Action.index values, and the two diverge as soon as
anything is deleted. Deleting a middle action slid a never-summarized
action into the covered range, skipping it forever; and pruning a memory
left the actions it covered stranded behind the cursor. Adds
note_action_removed() (called before the delete in delete_action and
undo_turn) and a rewind in prune_dangling_memories. delete_action also
now prunes at all, which it never did.
Not addressed: editing an already-summarized action still leaves its
memory stale, and the cumulative story summary can't have one fact
un-mixed from it.
117 backend tests pass, including new test_memory_settling.py (12) and
two retry-context regression tests.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01UeQVy5bEjLhfgWNc27Efet
356 lines
13 KiB
Python
356 lines
13 KiB
Python
"""End-to-end HTTP tests for retry history: every attempt at an AI turn is kept
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as a variant of the same action, browsable and (for the last message)
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switchable, restoring the world/script state that attempt produced.
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python -m pytest tests/test_retry_variants.py -v
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"""
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import os
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import tempfile
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_tmp = tempfile.NamedTemporaryFile(suffix=".db", delete=False)
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_tmp.close()
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os.environ["AIDND_DB_PATH"] = _tmp.name
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os.environ.pop("AIDND_DATABASE_URL", None)
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os.environ.pop("DATABASE_URL", None)
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import pytest
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from fastapi import Depends
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from fastapi.testclient import TestClient
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from app import auth, limits, models
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from app.database import Base, SessionLocal, engine, get_db
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from app.main import app
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from app.providers import PromptParts, ProviderError
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from app.routers import adventures
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SCHEMA = {"player": {"hp": {"min": 0, "max": 100, "initial": 100}}}
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# Each turn spends 10 gold, so a double-applied or un-rolled-back attempt shows.
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GOLD_SCRIPT = """
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const modifier = (text) => {
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state.gold = (state.gold || 0) + 10;
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return { text };
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};
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modifier(text);
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"""
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class ScriptedProvider:
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"""Streams the next canned reply each call, so successive retries differ."""
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replies: list = []
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calls = 0
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prompts: list = [] # every assembled (system, story) pair, for context assertions
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def __init__(self, *a, **k):
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pass
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async def generate(self, parts: PromptParts, *, temperature, max_tokens):
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index = min(ScriptedProvider.calls, len(ScriptedProvider.replies) - 1)
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ScriptedProvider.calls += 1
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ScriptedProvider.prompts.append((parts.system, parts.story))
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reply = ScriptedProvider.replies[index]
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if isinstance(reply, Exception):
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raise reply
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yield ("text", reply)
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@pytest.fixture()
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def client(monkeypatch):
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Base.metadata.create_all(bind=engine)
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setup = SessionLocal()
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user = models.User(is_guest=False, email="variants@example.com")
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setup.add(user)
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setup.flush()
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setup.add(models.Settings(user_id=user.id, api_key="enc:dummy", model="test-model"))
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scenario = models.Scenario(user_id=user.id, title="S", stat_schema=SCHEMA)
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setup.add(scenario)
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setup.flush()
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adv = models.Adventure(
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user_id=user.id, title="Cave", scenario_id=scenario.id,
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script_state={}, world_state={"player": {"hp": 100}},
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)
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setup.add(adv)
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setup.flush()
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setup.add(models.Action(adventure_id=adv.id, index=0, type="start", text="You enter a cave."))
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setup.add(models.AdventureScript(
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adventure_id=adv.id, position=0, enabled=True, name="Gold", output_js=GOLD_SCRIPT,
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))
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setup.commit()
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adv_id, user_id = adv.id, user.id
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setup.close()
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ScriptedProvider.replies = ["Attempt one."]
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ScriptedProvider.calls = 0
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ScriptedProvider.prompts = []
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monkeypatch.setattr(adventures, "OpenAICompatibleProvider", ScriptedProvider)
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monkeypatch.setattr(auth, "resolve_provider_config", lambda s: auth.ProviderConfig(
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"http://fake", "k", "test-model", False))
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monkeypatch.setattr(limits, "rate_limit", lambda *a, **k: None)
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monkeypatch.setattr(limits, "check_row_cap", lambda *a, **k: None)
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def _current_user(db=Depends(get_db)):
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return db.get(models.User, user_id)
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app.dependency_overrides[auth.get_current_user] = _current_user
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c = TestClient(app)
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c.adv_id = adv_id
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try:
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yield c
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finally:
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app.dependency_overrides.clear()
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adventures._active_turns.clear()
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Base.metadata.drop_all(bind=engine)
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def _adv(adv_id):
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db = SessionLocal()
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try:
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adv = db.get(models.Adventure, adv_id)
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return adv.script_state, adv.world_state
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finally:
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db.close()
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def _actions(client):
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return client.get(f"/api/adventures/{client.adv_id}").json()["actions"]
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def _play(client, text="look around"):
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r = client.post(f"/api/adventures/{client.adv_id}/actions",
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json={"type": "do", "text": text})
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assert r.status_code == 200, r.text
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def _retry(client):
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r = client.post(f"/api/adventures/{client.adv_id}/retry")
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assert r.status_code == 200, r.text
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return r
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# ---------------------------------------------------------------- keeping them
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def test_retry_keeps_the_discarded_attempt(client):
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ScriptedProvider.replies = ["Attempt one.", "Attempt two."]
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_play(client)
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assert _actions(client)[-1]["text"] == "Attempt one."
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_retry(client)
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actions = _actions(client)
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# One AI action still, not two — the retry replaced the live text in place.
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assert [a["type"] for a in actions] == ["start", "do", "ai"]
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last = actions[-1]
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assert last["text"] == "Attempt two."
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assert last["variant_count"] == 2
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assert last["variant_index"] == 1
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r = client.get(f"/api/adventures/{client.adv_id}/actions/{last['id']}/variants")
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assert r.status_code == 200, r.text
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assert [v["text"] for v in r.json()] == ["Attempt one.", "Attempt two."]
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assert [v["active"] for v in r.json()] == [False, True]
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def test_retry_context_excludes_the_attempt_being_replaced(client):
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"""The whole point of a retry is a fresh take on the *same* turn. The row
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now survives the retry (it holds the variant history), so it is still in
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`adventure.actions` while the replacement context is assembled — it must be
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filtered out, or the model is asked to continue *past* the attempt it is
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supposed to be replacing and writes a sequel that blends both."""
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ScriptedProvider.replies = ["Attempt one.", "Attempt two."]
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_play(client)
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_retry(client)
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retry_story = ScriptedProvider.prompts[-1][1]
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assert "Attempt one." not in retry_story
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# The turn's own player action must still be there — it's what to respond to.
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assert "look around" in retry_story
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assert "You enter a cave." in retry_story
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def test_retry_context_keeps_earlier_ai_turns(client):
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"""Only the action being retried is dropped, not AI history in general."""
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ScriptedProvider.replies = ["First turn.", "Second turn.", "Second, again."]
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_play(client, "go north")
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_play(client, "go south")
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_retry(client)
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retry_story = ScriptedProvider.prompts[-1][1]
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assert "First turn." in retry_story
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assert "Second turn." not in retry_story
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def test_never_retried_action_has_no_variants(client):
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_play(client)
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last = _actions(client)[-1]
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assert last["variant_count"] == 0
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assert client.get(
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f"/api/adventures/{client.adv_id}/actions/{last['id']}/variants").json() == []
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def test_three_attempts_all_kept_in_order(client):
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ScriptedProvider.replies = ["One.", "Two.", "Three."]
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_play(client)
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_retry(client)
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_retry(client)
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last = _actions(client)[-1]
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assert last["variant_count"] == 3
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assert last["variant_index"] == 2
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variants = client.get(
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f"/api/adventures/{client.adv_id}/actions/{last['id']}/variants").json()
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assert [v["text"] for v in variants] == ["One.", "Two.", "Three."]
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# ---------------------------------------------------------------- switching
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def test_switching_back_restores_that_attempt_state(client):
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ScriptedProvider.replies = [
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"You take a scratch.\n```state\n{\"player.hp\": -5}\n```",
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"You take a beating.\n```state\n{\"player.hp\": -40}\n```",
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]
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_play(client)
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assert _adv(client.adv_id)[1]["player"]["hp"] == 95
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_retry(client)
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script_state, world_state = _adv(client.adv_id)
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assert world_state["player"]["hp"] == 60
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assert script_state == {"gold": 10} # rolled back, not stacked to 20
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last = _actions(client)[-1]
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r = client.post(
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f"/api/adventures/{client.adv_id}/actions/{last['id']}/variant", json={"index": 0})
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assert r.status_code == 200, r.text
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assert r.json()["text"].startswith("You take a scratch")
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assert r.json()["variant_index"] == 0
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# The stats follow the narration back.
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script_state, world_state = _adv(client.adv_id)
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assert world_state["player"]["hp"] == 95
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assert script_state == {"gold": 10}
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# And forward again.
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client.post(f"/api/adventures/{client.adv_id}/actions/{last['id']}/variant",
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json={"index": 1})
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assert _adv(client.adv_id)[1]["player"]["hp"] == 60
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def test_switching_updates_the_world_change_chips(client):
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ScriptedProvider.replies = [
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"A scratch.\n```state\n{\"player.hp\": -5}\n```",
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"A beating.\n```state\n{\"player.hp\": -40}\n```",
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]
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_play(client)
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_retry(client)
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last = _actions(client)[-1]
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assert last["world_changes"][0]["delta"] == -40
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client.post(f"/api/adventures/{client.adv_id}/actions/{last['id']}/variant",
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json={"index": 0})
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assert _actions(client)[-1]["world_changes"][0]["delta"] == -5
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def test_cannot_switch_a_turn_the_story_moved_past(client):
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ScriptedProvider.replies = ["One.", "Two.", "Three."]
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_play(client)
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_retry(client)
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retried = _actions(client)[-1]
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_play(client) # story continues from "Two."
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r = client.post(
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f"/api/adventures/{client.adv_id}/actions/{retried['id']}/variant", json={"index": 0})
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assert r.status_code == 400
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assert "latest message" in r.json()["detail"]
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# Still readable, though — that's the whole point of keeping them.
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variants = client.get(
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f"/api/adventures/{client.adv_id}/actions/{retried['id']}/variants").json()
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assert [v["text"] for v in variants] == ["One.", "Two."]
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def test_switching_to_a_missing_index_is_rejected(client):
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ScriptedProvider.replies = ["One.", "Two."]
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_play(client)
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_retry(client)
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last = _actions(client)[-1]
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r = client.post(
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f"/api/adventures/{client.adv_id}/actions/{last['id']}/variant", json={"index": 7})
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assert r.status_code == 400
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# ---------------------------------------------------------------- edge cases
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def test_failed_retry_leaves_the_previous_attempt_in_charge(client):
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"""A provider error mid-retry must undo the rollback, or the stats on
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screen would silently disagree with the text still shown."""
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ScriptedProvider.replies = ["Attempt one.", ProviderError("upstream is down")]
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_play(client)
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assert _adv(client.adv_id)[0] == {"gold": 10}
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client.post(f"/api/adventures/{client.adv_id}/retry")
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actions = _actions(client)
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assert actions[-1]["text"] == "Attempt one." # text never lost
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assert _adv(client.adv_id)[0] == {"gold": 10} # and the state still matches it
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def test_undo_removes_the_action_and_its_history(client):
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ScriptedProvider.replies = ["One.", "Two."]
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_play(client)
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_retry(client)
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r = client.post(f"/api/adventures/{client.adv_id}/undo")
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assert r.status_code == 200, r.text
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assert [a["type"] for a in r.json()] == ["start"]
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assert _adv(client.adv_id)[0] == {}
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def test_editing_the_text_updates_the_live_variant(client):
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ScriptedProvider.replies = ["One.", "Two."]
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_play(client)
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_retry(client)
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last = _actions(client)[-1]
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client.patch(f"/api/adventures/{client.adv_id}/actions/{last['id']}",
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json={"text": "Two, but better."})
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# Page away and back: the edit must survive, not be reverted by the switch.
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client.post(f"/api/adventures/{client.adv_id}/actions/{last['id']}/variant",
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json={"index": 0})
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client.post(f"/api/adventures/{client.adv_id}/actions/{last['id']}/variant",
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json={"index": 1})
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assert _actions(client)[-1]["text"] == "Two, but better."
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def test_retry_keeps_the_turn_index(client):
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"""A retry re-runs the same turn, so the world-state clock (which drives
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cooldowns) must not advance."""
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ScriptedProvider.replies = ["One.", "Two."]
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_play(client)
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before = _actions(client)[-1]["index"]
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_retry(client)
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assert _actions(client)[-1]["index"] == before
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def test_export_and_import_round_trips_variants(client):
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ScriptedProvider.replies = ["One.", "Two."]
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_play(client)
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_retry(client)
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bundle = client.get(f"/api/adventures/{client.adv_id}/export").json()
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ai = [a for a in bundle["actions"] if a["type"] == "ai"][0]
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assert [v["text"] for v in ai["variants"]] == ["One.", "Two."]
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assert ai["variantIndex"] == 1
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r = client.post("/api/adventures/import", json=bundle)
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assert r.status_code == 201, r.text
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imported = r.json()["id"]
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actions = client.get(f"/api/adventures/{imported}").json()["actions"]
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assert actions[-1]["variant_count"] == 2
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assert actions[-1]["variant_index"] == 1
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def test_import_clamps_an_out_of_range_variant_index(client):
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bundle = {
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"format": "ai-dnd-adventure-v1", "title": "Hand-edited",
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"actions": [{
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"index": 0, "type": "ai", "text": "Only.",
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"variants": [{"text": "Only."}], "variantIndex": 9,
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}],
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}
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r = client.post("/api/adventures/import", json=bundle)
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assert r.status_code == 201, r.text
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actions = client.get(f"/api/adventures/{r.json()['id']}").json()["actions"]
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assert actions[0]["variant_index"] == 0
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