补充测试覆盖：认证、云图、管理后台、资料、收藏、云类型模块共 78 个测试用例

tests/conftest.py

@@ -1,4 +1,5 @@
 import asyncio
+import io
 import os
 import shutil
 import tempfile
@@ -8,12 +9,23 @@ from pathlib import Path
 
 import pytest
 from fastapi.testclient import TestClient
+from PIL import Image
 
 
 TEST_ID = uuid.uuid4().hex
 TEST_DB = Path(tempfile.gettempdir()) / f"opencloud-{TEST_ID}.sqlite3"
 TEST_UPLOADS = Path(tempfile.gettempdir()) / f"opencloud-{TEST_ID}-uploads"
 
+
+def bearer(token: str) -> dict[str, str]:
+    return {"Authorization": f"Bearer {token}"}
+
+
+def png_bytes() -> bytes:
+    output = io.BytesIO()
+    Image.new("RGB", (200, 200), color=(125, 196, 240)).save(output, format="PNG")
+    return output.getvalue()
+
 os.environ["ENVIRONMENT"] = "test"
 os.environ["DATABASE_URL"] = f"sqlite+aiosqlite:///{TEST_DB}"
 os.environ["SECRET_KEY"] = "test-secret-key-that-is-long-enough-for-opencloud"