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FabledCurator/tests/test_external_worker.py
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test(external): unique seeded artist per host (fix uq_artist_name in sweep test)
2026-06-14 15:33:49 -04:00

139 lines
4.5 KiB
Python

"""Integration tests for the external-link download worker (tasks/external)."""
import pytest
from sqlalchemy import func, select
import backend.app.tasks.external as ext
from backend.app.models import Artist, ExternalLink, Post, PostAttachment, Source
from backend.app.services.external_fetch import FetchResult
pytestmark = pytest.mark.integration
class _FakeLock:
def acquire(self, blocking=False):
return True
def release(self):
pass
class _FakeRedis:
def lock(self, name, timeout=None, blocking=False):
return _FakeLock()
def _seed(db_sync, *, host="pixeldrain", status="pending"):
# Key per host so a single test can seed several (artist name is UNIQUE).
artist = Artist(name=f"Ext {host}", slug=f"ext-{host}")
db_sync.add(artist)
db_sync.flush()
source = Source(
artist_id=artist.id, platform="patreon",
url=f"https://patreon.com/{host}", enabled=True, config_overrides={},
)
db_sync.add(source)
db_sync.flush()
post = Post(
source_id=source.id, artist_id=artist.id, external_post_id=f"EXT-{host}",
post_url=f"https://patreon.com/posts/{host}",
)
db_sync.add(post)
db_sync.flush()
link = ExternalLink(
post_id=post.id, artist_id=artist.id, host=host,
url=f"https://{host}.test/file", status=status,
)
db_sync.add(link)
db_sync.commit()
return post, link
def test_fetch_external_link_downloads_and_attaches(db_sync, tmp_path, monkeypatch):
post, link = _seed(db_sync)
link_id = link.id
monkeypatch.setattr(ext, "IMAGES_ROOT", tmp_path)
monkeypatch.setattr(ext, "_redis", lambda: _FakeRedis())
def fake_fetch(host, url, dest_dir, *, timeout, should_stop=lambda: False):
dest_dir.mkdir(parents=True, exist_ok=True)
f = dest_dir / "film.bin" # non-art → PostAttachment (no thumb/ML enqueue)
f.write_bytes(b"a film pack")
return FetchResult(files=[f], bytes=f.stat().st_size)
monkeypatch.setattr(ext, "fetch_external", fake_fetch)
out = ext.fetch_external_link(link_id)
assert out.get("files") == 1
db_sync.expire_all()
refreshed = db_sync.get(ExternalLink, link_id)
assert refreshed.status == "downloaded"
assert refreshed.completed_at is not None
# The file was captured as a PostAttachment linked to the SAME post.
atts = db_sync.execute(
select(PostAttachment).where(PostAttachment.post_id == post.id)
).scalars().all()
assert len(atts) == 1
def test_fetch_external_link_records_failure(db_sync, tmp_path, monkeypatch):
_, link = _seed(db_sync)
link_id = link.id
monkeypatch.setattr(ext, "IMAGES_ROOT", tmp_path)
monkeypatch.setattr(ext, "_redis", lambda: _FakeRedis())
monkeypatch.setattr(
ext, "fetch_external",
lambda *a, **k: FetchResult(error="host 503"),
)
ext.fetch_external_link(link_id)
db_sync.expire_all()
refreshed = db_sync.get(ExternalLink, link_id)
assert refreshed.status == "failed"
assert refreshed.attempts == 1
assert "503" in refreshed.last_error
def test_fetch_external_link_dead_letters_at_threshold(db_sync, tmp_path, monkeypatch):
_, link = _seed(db_sync)
link.attempts = ext.DEAD_LETTER_THRESHOLD - 1
db_sync.commit()
link_id = link.id
monkeypatch.setattr(ext, "IMAGES_ROOT", tmp_path)
monkeypatch.setattr(ext, "_redis", lambda: _FakeRedis())
monkeypatch.setattr(ext, "fetch_external", lambda *a, **k: FetchResult(error="nope"))
ext.fetch_external_link(link_id)
db_sync.expire_all()
assert db_sync.get(ExternalLink, link_id).status == "dead"
def test_fetch_external_link_skips_non_claimable(db_sync, tmp_path, monkeypatch):
_, link = _seed(db_sync, status="downloaded")
link_id = link.id
called = []
monkeypatch.setattr(ext, "_redis", lambda: _FakeRedis())
monkeypatch.setattr(
ext, "fetch_external",
lambda *a, **k: called.append(1) or FetchResult(),
)
out = ext.fetch_external_link(link_id)
assert out.get("skipped") == "not claimable"
assert called == [] # never fetched
def test_sweep_enqueues_pending_and_retryable(db_sync, monkeypatch):
_, l1 = _seed(db_sync, host="pixeldrain")
_, l2 = _seed(db_sync, host="mega", status="failed")
# A dead one must NOT be swept.
_, l3 = _seed(db_sync, host="dropbox", status="dead")
enqueued = []
monkeypatch.setattr(ext.fetch_external_link, "delay", lambda lid: enqueued.append(lid))
out = ext.sweep_external_links()
assert out["enqueued"] == 2
assert set(enqueued) == {l1.id, l2.id}