296 lines
10 KiB
Python
296 lines
10 KiB
Python
from __future__ import annotations
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import asyncio
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import random
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import math
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from pathlib import Path
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from fastapi.testclient import TestClient
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from sqlalchemy import select
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from app.api.public.random import _quality_score # noqa: PLC2701
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from app.db.models.base import Base
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from app.db.models.images import Image
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from app.db.random_pick import pick_random_image
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from app.db.session import create_sessionmaker
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from app.main import create_app
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def test_random_quality_strategy_picks_weighted_by_score(tmp_path: Path, monkeypatch) -> None:
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db_path = tmp_path / "random_quality_strategy.db"
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db_url = "sqlite+aiosqlite:///" + db_path.as_posix()
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monkeypatch.setenv("APP_ENV", "dev")
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monkeypatch.setenv("DATABASE_URL", db_url)
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app = create_app()
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async def _seed() -> None:
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async with app.state.engine.begin() as conn:
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await conn.run_sync(Base.metadata.create_all)
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Session = create_sessionmaker(app.state.engine)
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async with Session() as session:
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session.add_all(
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[
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Image(
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illust_id=1,
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page_index=0,
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ext="jpg",
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original_url="https://example.test/1.jpg",
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proxy_path="/i/1.jpg",
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random_key=0.10,
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x_restrict=0,
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ai_type=0,
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width=1200,
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height=800,
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bookmark_count=10,
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view_count=100,
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comment_count=1,
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),
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Image(
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illust_id=2,
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page_index=0,
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ext="jpg",
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original_url="https://example.test/2.jpg",
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proxy_path="/i/2.jpg",
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random_key=0.30,
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x_restrict=0,
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ai_type=0,
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width=800,
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height=800,
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bookmark_count=500,
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view_count=20000,
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comment_count=50,
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),
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Image(
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illust_id=3,
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page_index=0,
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ext="jpg",
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original_url="https://example.test/3.jpg",
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proxy_path="/i/3.jpg",
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random_key=0.60,
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x_restrict=0,
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ai_type=0,
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width=3000,
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height=2000,
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bookmark_count=200,
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view_count=4000,
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comment_count=10,
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),
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Image(
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illust_id=4,
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page_index=0,
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ext="jpg",
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original_url="https://example.test/4.jpg",
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proxy_path="/i/4.jpg",
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random_key=0.85,
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x_restrict=0,
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ai_type=0,
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width=900,
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height=1600,
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bookmark_count=30,
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view_count=300,
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comment_count=2,
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),
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]
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)
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await session.commit()
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await app.state.engine.dispose()
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asyncio.run(_seed())
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seed = "seed_test_001"
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samples = 3
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async def _compute_expected_quality_pick() -> int:
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rng = random.Random(seed)
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Session = create_sessionmaker(app.state.engine)
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async with Session() as session:
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start = float(rng.random())
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ordered = (await session.execute(select(Image).order_by(Image.random_key.asc()))).scalars().all()
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assert ordered
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ordered2 = sorted(ordered, key=lambda x: float(x.random_key))
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start_idx = 0
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for i, img in enumerate(ordered2):
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if float(img.random_key) >= start:
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start_idx = i
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break
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take = min(int(samples), len(ordered2))
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picked_imgs = [ordered2[(start_idx + i) % len(ordered2)] for i in range(take)]
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candidates: list[tuple[int, float]] = [(int(img.id), float(_quality_score(img))) for img in picked_imgs]
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assert candidates
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max_logit = max(s for _id, s in candidates)
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weights = [math.exp(float(s) - float(max_logit)) for _id, s in candidates]
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total = float(sum(weights))
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assert total > 0
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r = float(rng.random()) * total
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for (img_id, _s), w in zip(candidates, weights, strict=True):
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r -= float(w)
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if r <= 0:
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return int(img_id)
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return int(candidates[-1][0])
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expected_quality_id = asyncio.run(_compute_expected_quality_pick())
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with TestClient(app) as client:
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resp = client.get(
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"/random",
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params={
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"format": "json",
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"attempts": 1,
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"seed": seed,
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"strategy": "quality",
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"quality_samples": samples,
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},
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)
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assert resp.status_code == 200
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body = resp.json()
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assert body["ok"] is True
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assert int(body["data"]["image"]["id"]) == expected_quality_id
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assert body["data"]["debug"]["picked_by"] == "quality_weighted"
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assert body["data"]["debug"]["quality_samples"] == samples
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assert isinstance(body["data"]["debug"]["quality_score"], float)
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def test_random_strategy_random_key_matches_pick_random_image(tmp_path: Path, monkeypatch) -> None:
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db_path = tmp_path / "random_strategy_random_key.db"
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db_url = "sqlite+aiosqlite:///" + db_path.as_posix()
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monkeypatch.setenv("APP_ENV", "dev")
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monkeypatch.setenv("DATABASE_URL", db_url)
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app = create_app()
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async def _seed() -> None:
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async with app.state.engine.begin() as conn:
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await conn.run_sync(Base.metadata.create_all)
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Session = create_sessionmaker(app.state.engine)
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async with Session() as session:
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session.add_all(
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[
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Image(
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illust_id=10,
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page_index=0,
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ext="jpg",
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original_url="https://example.test/a.jpg",
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proxy_path="/i/10.jpg",
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random_key=0.20,
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x_restrict=0,
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ai_type=0,
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),
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Image(
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illust_id=11,
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page_index=0,
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ext="jpg",
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original_url="https://example.test/b.jpg",
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proxy_path="/i/11.jpg",
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random_key=0.80,
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x_restrict=0,
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ai_type=0,
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),
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]
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)
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await session.commit()
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await app.state.engine.dispose()
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asyncio.run(_seed())
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seed = "seed_test_002"
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rng = random.Random(seed)
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async def _compute_expected() -> int:
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Session = create_sessionmaker(app.state.engine)
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async with Session() as session:
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img = await pick_random_image(session, r=rng.random())
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assert img is not None
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return int(img.id)
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expected_id = asyncio.run(_compute_expected())
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with TestClient(app) as client:
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resp = client.get("/random", params={"format": "simple_json", "attempts": 1, "seed": seed, "strategy": "random"})
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assert resp.status_code == 200
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body = resp.json()
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assert body["ok"] is True
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assert int(body["data"]["image"]["id"]) == expected_id
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assert body["data"]["debug"]["picked_by"] == "random_key"
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def test_random_quality_samples_allows_1000(tmp_path: Path, monkeypatch) -> None:
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db_path = tmp_path / "random_quality_samples_1000.db"
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db_url = "sqlite+aiosqlite:///" + db_path.as_posix()
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monkeypatch.setenv("APP_ENV", "dev")
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monkeypatch.setenv("DATABASE_URL", db_url)
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app = create_app()
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async def _seed() -> None:
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async with app.state.engine.begin() as conn:
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await conn.run_sync(Base.metadata.create_all)
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Session = create_sessionmaker(app.state.engine)
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async with Session() as session:
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session.add_all(
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[
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Image(
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illust_id=100,
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page_index=0,
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ext="jpg",
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original_url="https://example.test/100.jpg",
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proxy_path="/i/100.jpg",
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random_key=0.20,
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x_restrict=0,
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ai_type=0,
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width=1200,
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height=800,
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bookmark_count=10,
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view_count=100,
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comment_count=1,
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),
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Image(
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illust_id=101,
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page_index=0,
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ext="jpg",
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original_url="https://example.test/101.jpg",
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proxy_path="/i/101.jpg",
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random_key=0.80,
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x_restrict=0,
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ai_type=0,
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width=800,
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height=800,
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bookmark_count=500,
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view_count=20000,
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comment_count=50,
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),
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]
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)
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await session.commit()
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await app.state.engine.dispose()
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asyncio.run(_seed())
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with TestClient(app) as client:
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resp = client.get(
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"/random",
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params={
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"format": "json",
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"attempts": 1,
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"seed": "seed_quality_1000",
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"strategy": "quality",
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"quality_samples": 1000,
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},
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)
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assert resp.status_code == 200
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body = resp.json()
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assert body["ok"] is True
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assert body["data"]["debug"]["quality_samples"] == 1000
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