Update the tests for Metadata.get_author_book action.

test/decentralised_book_index/metadata/book_test.exs

@@ -202,7 +202,7 @@ defmodule DecentralisedBookIndex.Metadata.BookTest do
         %{order: 1, author_id: author.id, role: ""}
       ]
 
-      {:ok, _book} =
+      {:ok, book} =
         Metadata.create_book(
           "Book",
           "An description",
@@ -218,7 +218,10 @@ defmodule DecentralisedBookIndex.Metadata.BookTest do
           actor: user
         )
 
-      assert {:ok, _books} = Metadata.get_author_books(author)
+      assert {:ok, books} = Metadata.get_author_books(author)
+
+      book_ids = Enum.map(books.results, & &1.id)
+      assert book.id in book_ids
     end
 
     test "get the list contains aliases' books", %{user: user} do
@@ -248,7 +251,7 @@ defmodule DecentralisedBookIndex.Metadata.BookTest do
 
       assert {:ok, books} = Metadata.get_author_books(author)
 
-      book_ids = Enum.map(books, & &1.id)
+      book_ids = Enum.map(books.results, & &1.id)
 
       assert book.id in book_ids
       assert book2.id in book_ids