Refactor test files for improved readability and consistency

- Removed unnecessary blank lines and adjusted formatting in test files.
- Ensured consistent use of commas in function calls and assertions across various test cases.
- Updated import statements for better organization and clarity.
- Enhanced mock setups in tests for better isolation and reliability.
- Improved assertions to follow a consistent style for better readability.

tests/api/v1/test_extraction_endpoints.py

@@ -1,20 +1,16 @@
 """Tests for extraction API endpoints."""
 
-from unittest.mock import AsyncMock, Mock
 
 import pytest
-import pytest_asyncio
 from httpx import AsyncClient
 
-from app.models.user import User
-
 
 class TestExtractionEndpoints:
     """Test extraction API endpoints."""
 
     @pytest.mark.asyncio
     async def test_create_extraction_success(
-        self, test_client: AsyncClient, auth_cookies: dict[str, str]
+        self, test_client: AsyncClient, auth_cookies: dict[str, str],
     ):
         """Test successful extraction creation."""
         # Set cookies on client instance to avoid deprecation warning
@@ -50,7 +46,7 @@ class TestExtractionEndpoints:
 
     @pytest.mark.asyncio
     async def test_get_processor_status_admin(
-        self, test_client: AsyncClient, admin_cookies: dict[str, str]
+        self, test_client: AsyncClient, admin_cookies: dict[str, str],
     ):
         """Test getting processor status as admin."""
         # Set cookies on client instance to avoid deprecation warning
@@ -66,7 +62,7 @@ class TestExtractionEndpoints:
 
     @pytest.mark.asyncio
     async def test_get_processor_status_non_admin(
-        self, test_client: AsyncClient, auth_cookies: dict[str, str]
+        self, test_client: AsyncClient, auth_cookies: dict[str, str],
     ):
         """Test getting processor status as non-admin user."""
         # Set cookies on client instance to avoid deprecation warning
@@ -80,7 +76,7 @@ class TestExtractionEndpoints:
 
     @pytest.mark.asyncio
     async def test_get_user_extractions(
-        self, test_client: AsyncClient, auth_cookies: dict[str, str]
+        self, test_client: AsyncClient, auth_cookies: dict[str, str],
     ):
         """Test getting user extractions."""
         # Set cookies on client instance to avoid deprecation warning