Refactor tests for improved consistency and readability

- Updated test cases in `test_auth_endpoints.py` to ensure consistent formatting and style.
- Enhanced `test_socket_endpoints.py` with consistent parameter formatting and improved readability.
- Cleaned up `conftest.py` by ensuring consistent parameter formatting in fixtures.
- Added comprehensive tests for API token dependencies in `test_api_token_dependencies.py`.
- Refactored `test_auth_service.py` to maintain consistent parameter formatting.
- Cleaned up `test_oauth_service.py` by removing unnecessary imports.
- Improved `test_socket_service.py` with consistent formatting and readability.
- Enhanced `test_cookies.py` by ensuring consistent formatting and readability.
- Introduced new tests for token utilities in `test_token_utils.py` to validate token generation and expiration logic.

tests/services/test_oauth_service.py

@@ -1,16 +1,14 @@
 """Tests for OAuth service."""
 
 from typing import Any
-from unittest.mock import AsyncMock, Mock, patch
+from unittest.mock import Mock, patch
 
 import pytest
-from httpx import AsyncClient
 
 from app.services.oauth import (
     GitHubOAuthProvider,
     GoogleOAuthProvider,
     OAuthService,
-    OAuthUserInfo,
 )