Refactor user endpoint tests to include pagination and response structure validation

- Updated tests for listing users to validate pagination and response format.
- Changed mock return values to include total count and pagination details.
- Refactored user creation mocks for clarity and consistency.
- Enhanced assertions to check for presence of pagination fields in responses.
- Adjusted test cases for user retrieval and updates to ensure proper handling of user data.
- Improved readability by restructuring mock definitions and assertions across various test files.

app/api/v1/auth.py

@@ -464,7 +464,8 @@ async def update_profile(
     """Update the current user's profile."""
     try:
         updated_user = await auth_service.update_user_profile(
-            current_user, request.model_dump(exclude_unset=True),
+            current_user,
+            request.model_dump(exclude_unset=True),
         )
         return await auth_service.user_to_response(updated_user)
     except Exception as e:
@@ -486,7 +487,9 @@ async def change_password(
     user_email = current_user.email
     try:
         await auth_service.change_user_password(
-            current_user, request.current_password, request.new_password,
+            current_user,
+            request.current_password,
+            request.new_password,
         )
     except ValueError as e:
         raise HTTPException(
@@ -513,11 +516,13 @@ async def get_user_providers(
 
     # Add password provider if user has password
     if current_user.password_hash:
-        providers.append({
-            "provider": "password",
-            "display_name": "Password",
-            "connected_at": current_user.created_at.isoformat(),
-        })
+        providers.append(
+            {
+                "provider": "password",
+                "display_name": "Password",
+                "connected_at": current_user.created_at.isoformat(),
+            },
+        )
 
     # Get OAuth providers from the database
     oauth_providers = await auth_service.get_user_oauth_providers(current_user)
@@ -528,10 +533,12 @@ async def get_user_providers(
         elif oauth.provider == "google":
             display_name = "Google"
 
-        providers.append({
-            "provider": oauth.provider,
-            "display_name": display_name,
-            "connected_at": oauth.created_at.isoformat(),
-        })
+        providers.append(
+            {
+                "provider": oauth.provider,
+                "display_name": display_name,
+                "connected_at": oauth.created_at.isoformat(),
+            },
+        )
 
     return providers