fix typecheck errors in test_book_service.py

backend/tests/unit/test_services/test_book_service.py

@@ -1,10 +1,6 @@
 """Tests for BookService"""
 
 import pytest
-
-from pathlib import Path
-
-
 import aiofiles.os as aios
 
 from chitai.schemas import BookCreate
@@ -29,16 +25,17 @@ class TestBookServiceCRUD:
         )
 
         book = await books_service.to_model_on_create(book_data.model_dump())
+        assert isinstance(book, m.Book)
 
         # Add path manually as it won't be generated (not using the create function, but manually inserting into db)
         book.path = f"{test_library.root_path}/J.R.R Tolkien/The Fellowship of the Ring"
-        await aios.makedirs(book.path)
+        await aios.makedirs(book.path) # type: ignore[arg-type]  
 
         books_service.repository.session.add(book)
         await books_service.repository.session.commit()
         await books_service.repository.session.refresh(book)
 
-        await books_service.update(
+        await books_service.update_book(
             book.id,
             {
                 "title": "The Fellowship of the Ring",
@@ -66,9 +63,7 @@ class TestBookServiceCRUD:
         assert updated_book.identifiers[0].value == "9780261102354"
 
         assert updated_book.edition == 3
+        assert updated_book.publisher is not None
         assert updated_book.publisher.name == "Tolkien Estate"
 
         assert len(updated_book.tags) == 2
-
-
-# book = await books_service.create(book_data.model_dump())