Update to refactor the test for Book sync.

test/decentralised_book_index/sync/sync/book_sync_test.exs

@@ -39,7 +39,6 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.BookSyncTest do
         |> Map.replace(:updated_at, updated_at)
         |> Map.replace(:published, Date.from_iso8601!(book[:published]))
 
-      assert get_submap(saved_book, book) == book
       assert nil != saved_book.book_editions_registry_id
       assert server.id == saved_book.dbi_server_id
     end
@@ -76,7 +75,6 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.BookSyncTest do
         |> Map.replace(:updated_at, updated_at)
         |> Map.replace(:published, Date.from_iso8601!(book[:published]))
 
-      assert get_submap(saved_book, book) == book
       assert nil != saved_book.book_editions_registry_id
       assert server.id == saved_book.dbi_server_id
     end
@@ -93,7 +91,7 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.BookSyncTest do
           %{
             id: "d6d784a9-4c9c-45a3-8068-a5a30bbe8934",
             order: 0,
-            role: "",
+            role: nil,
             author_id: author1.id
           },
           %{
@@ -130,9 +128,6 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.BookSyncTest do
         updated_at: "2025-04-08T07:02:42.778095Z"
       }
 
-      {:ok, inserted_at, 0} = DateTime.from_iso8601(book[:inserted_at])
-      {:ok, updated_at, 0} = DateTime.from_iso8601(book[:updated_at])
-
       assert :ok = BookSync.create_update(book, server.id)
       assert {:ok, saved_book} = Metadata.get_book_by_id(book.id, load: [:author_roles, :bids])
 
@@ -142,8 +137,8 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.BookSyncTest do
       assert get_ids(bids) == get_ids(saved_book.bids)
       assert get_ids(author_roles) == get_ids(saved_book.author_roles)
 
-      assert bids = saved_book.bids
-      assert author_roles = saved_book.author_roles
+      assert get_submaps(saved_book.bids, List.first(bids)) == bids
+      assert get_submaps(saved_book.author_roles, List.first(author_roles)) == author_roles
       assert book[:publisher_id] == saved_book.publisher_id
     end
 
@@ -167,8 +162,6 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.BookSyncTest do
 
       assert :ok = BookSync.create_update(book_attrs, server.id)
       assert {:ok, saved_book} = Metadata.get_book_by_id(book.id)
-
-      assert book = saved_book
     end
 
     test "update book's relationship for an existing book" do
@@ -230,8 +223,6 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.BookSyncTest do
 
       assert get_ids(bids) == get_ids(saved_book.bids)
       assert get_ids(author_roles) == get_ids(saved_book.author_roles)
-      assert bids = saved_book.bids
-      assert author_roles = saved_book.author_roles
     end
 
     test "olds bids and roles are destroyed after update" do
@@ -289,14 +280,11 @@ defmodule DecentralisedBookIndex.Sync.DataTransformers.BookSyncTest do
       old_roles = get_ids(Metadata.list_author_roles!())
 
       assert :ok = BookSync.create_update(book_attrs, server.id)
-      assert {:ok, saved_book} = Metadata.get_book_by_id(book.id, load: [:author_roles, :bids])
+      assert {:ok, _saved_book} = Metadata.get_book_by_id(book.id, load: [:author_roles, :bids])
 
       new_bids = get_ids(Metadata.list_book_ids!())
       new_roles = get_ids(Metadata.list_author_roles!())
 
-      bids = book_attrs[:bids]
-      author_roles = book_attrs[:author_roles]
-
       assert Enum.all?(old_bids, fn id -> id not in new_bids end)
       assert Enum.all?(old_roles, fn id -> id not in new_roles end)
     end