feat(fc3a): SourceService — CRUD + validation + is_subscription auto-flip

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

tests/test_source_service.py

@@ -0,0 +1,131 @@
+import pytest
+from sqlalchemy import select
+
+from backend.app.models import Artist
+from backend.app.services.source_service import (
+    ArtistNotFoundError,
+    DuplicateSourceError,
+    EmptyUrlError,
+    InvalidConfigError,
+    KNOWN_PLATFORMS,
+    SourceService,
+    UnknownPlatformError,
+)
+
+pytestmark = pytest.mark.integration
+
+
+async def _artist(db, name="Alice"):
+    a = Artist(name=name, slug=name.lower())
+    db.add(a)
+    await db.flush()
+    return a
+
+
+@pytest.mark.asyncio
+async def test_known_platforms_contains_starter_set(db):
+    assert {"patreon", "fanbox", "subscribestar", "pixiv", "deviantart"} <= KNOWN_PLATFORMS
+
+
+@pytest.mark.asyncio
+async def test_create_flips_is_subscription_on_first_source(db):
+    artist = await _artist(db)
+    svc = SourceService(db)
+    rec = await svc.create(
+        artist_id=artist.id, platform="patreon", url="https://patreon.com/alice",
+    )
+    assert rec.id is not None
+    is_sub = (await db.execute(
+        select(Artist.is_subscription).where(Artist.id == artist.id)
+    )).scalar_one()
+    assert is_sub is True
+
+
+@pytest.mark.asyncio
+async def test_delete_last_source_flips_is_subscription_off(db):
+    artist = await _artist(db)
+    svc = SourceService(db)
+    rec = await svc.create(
+        artist_id=artist.id, platform="patreon", url="https://patreon.com/alice",
+    )
+    await svc.delete(rec.id)
+    is_sub = (await db.execute(
+        select(Artist.is_subscription).where(Artist.id == artist.id)
+    )).scalar_one()
+    assert is_sub is False
+
+
+@pytest.mark.asyncio
+async def test_create_rejects_unknown_platform(db):
+    artist = await _artist(db)
+    svc = SourceService(db)
+    with pytest.raises(UnknownPlatformError):
+        await svc.create(
+            artist_id=artist.id, platform="myspace", url="https://m/x",
+        )
+
+
+@pytest.mark.asyncio
+async def test_create_rejects_non_dict_config(db):
+    artist = await _artist(db)
+    svc = SourceService(db)
+    with pytest.raises(InvalidConfigError):
+        await svc.create(
+            artist_id=artist.id, platform="patreon",
+            url="https://patreon.com/alice", config_overrides=[1, 2, 3],
+        )
+
+
+@pytest.mark.asyncio
+async def test_create_rejects_empty_url(db):
+    artist = await _artist(db)
+    svc = SourceService(db)
+    with pytest.raises(EmptyUrlError):
+        await svc.create(artist_id=artist.id, platform="patreon", url="   ")
+
+
+@pytest.mark.asyncio
+async def test_create_rejects_unknown_artist(db):
+    svc = SourceService(db)
+    with pytest.raises(ArtistNotFoundError):
+        await svc.create(artist_id=99999, platform="patreon", url="https://x/y")
+
+
+@pytest.mark.asyncio
+async def test_create_duplicate_raises_with_existing_id(db):
+    artist = await _artist(db)
+    svc = SourceService(db)
+    first = await svc.create(
+        artist_id=artist.id, platform="patreon", url="https://patreon.com/alice",
+    )
+    with pytest.raises(DuplicateSourceError) as exc:
+        await svc.create(
+            artist_id=artist.id, platform="patreon",
+            url="https://patreon.com/alice",
+        )
+    assert exc.value.existing_id == first.id
+
+
+@pytest.mark.asyncio
+async def test_list_filters_by_artist(db):
+    a = await _artist(db, "Alice")
+    b = await _artist(db, "Bob")
+    svc = SourceService(db)
+    await svc.create(artist_id=a.id, platform="patreon", url="https://patreon.com/a")
+    await svc.create(artist_id=b.id, platform="patreon", url="https://patreon.com/b")
+    only_a = await svc.list(artist_id=a.id)
+    assert [s.artist_id for s in only_a] == [a.id]
+    all_rows = await svc.list()
+    assert len(all_rows) == 2
+
+
+@pytest.mark.asyncio
+async def test_update_changes_fields(db):
+    artist = await _artist(db)
+    svc = SourceService(db)
+    rec = await svc.create(
+        artist_id=artist.id, platform="patreon", url="https://patreon.com/a",
+    )
+    updated = await svc.update(rec.id, enabled=False, config_overrides={"videos": False})
+    assert updated.enabled is False
+    assert updated.config_overrides == {"videos": False}